Forms

  • sylius_add_to_cart
    • cartItem
    • _token

sylius_add_to_cart

Form type:
"Sylius\Bundle\CoreBundle\Form\Type\Order\AddToCartType"

Errors

This form has no errors.

Default Data

Property Value
Model Format same as normalized format
Normalized Format
Sylius\Bundle\OrderBundle\Controller\AddToCartCommand {#114066
  -cart: App\Entity\Order\Order {#13364 …}
  -cartItem: App\Entity\Order\OrderItem {#114054
    #id: null
    #order: null
    #quantity: 1
    #unitPrice: 0
    #originalUnitPrice: 0
    #total: 0
    #immutable: false
    #units: Doctrine\Common\Collections\ArrayCollection {#114078 …}
    #unitsTotal: 0
    #adjustments: Doctrine\Common\Collections\ArrayCollection {#114079 …}
    #adjustmentsTotal: 0
    #version: 1
    #variant: App\Entity\Product\ProductVariant {#8103
      #id: 4485
      #code: "IEEE00004187PDF"
      #product: App\Entity\Product\Product {#7310
        #id: 10332
        #code: "IEEE00004187"
        #attributes: Doctrine\ORM\PersistentCollection {#7700 …}
        #variants: Doctrine\ORM\PersistentCollection {#7743 …}
        #options: Doctrine\ORM\PersistentCollection {#7915
          #collection: Doctrine\Common\Collections\ArrayCollection {#7917 …}
          #initialized: true
          -snapshot: [ …4]
          -owner: App\Entity\Product\Product {#7310}
          -association: [ …21]
          -em: ContainerHAOxQ06\EntityManagerGhostEbeb667 {#775 …}
          -backRefFieldName: null
          -typeClass: Symfony\Component\VarDumper\Caster\CutStub {#224923 …}
          -isDirty: false
        }
        #associations: Doctrine\ORM\PersistentCollection {#7899 …}
        #createdAt: DateTime @1751038995 {#7274
          date: 2025-06-27 17:43:15.0 Europe/Paris (+02:00)
        }
        #updatedAt: DateTime @1754607611 {#7322
          date: 2025-08-08 01:00:11.0 Europe/Paris (+02:00)
        }
        #enabled: true
        #translations: Doctrine\ORM\PersistentCollection {#7921 …}
        #translationsCache: [
          "en_US" => App\Entity\Product\ProductTranslation {#7920
            #locale: "en_US"
            #translatable: App\Entity\Product\Product {#7310}
            #id: 36337
            #name: "IEEE C63.19:2007"
            #slug: "ieee-c63-19-2007-ieee00004187-241984"
            #description: """
              New IEEE Standard - Superseded.<br />\n
              Uniform methods of measurement for compatibility between hearing aids and wireless communications devices are set forth.<br />\n
              \t\t\t\t<br />\n
              This standard applies to both wireless communications devices (WDs) and hearing aids. It sets forth uniform methods of measurement and parametric requirements for the electromagnetic and operational compatibility and accessibility of hearing aids used with WDs, including cordless, cellular, personal communications service (PCS) phones, and voice over internet protocol (VoIP) devices, operating in the range of 800 MHz to 3 GHz. However, this version is focused on existing services, which are in common use. Accordingly, in this version tests are provided for services in the 800 MHz to 950 MHz and 1.6 GHz to 2.5 GHz frequency bands. Future versions may add tests for other frequency bands, as they come into more common use.<br />\n
              This standard is intended to apply to all types of hearing aids with acoustic output, including, as examples, behind-the-ear (BTE), in-the-ear (ITE), in-the-canal (ITC), and completely-in-the-canal (CIC) types. Test methods are provided for hearing aids operating in acoustic (microphone input) mode or in tele-coil (T-Coil) input mode.<br />\n
              The field levels called for in various places shall be maintained within the limits for radio frequency (RF) safety, set forth in IEEE Std C95.1.1<br />\n
              The purpose of this standard is to establish categories for hearing aids and for WDs that can indicate to healthcare practitioners and hearing aid users which hearing aids are compatible with which WDs and to provide tests that can be used to assess the electromagnetic characteristics of hearing aids and WDs and assign them to these categories. The various parameters required, in order to demonstrate compatibility and accessibility are measured. The design of the standard is such that when a hearing aid and WD achieve one of the categories specified, as measured by the methodology of this standard, the indicated performance is realized.<br />\n
              In order to provide for the usability of a hearing aid with a WD, several factors must be coordinated as follows:<br />\n
              ? RF measurements of the near-field electric (E) and magnetic (H) fields emitted by a WD to<br />\n
              categorize these emissions for correlation with the RF immunity of a hearing aid<br />\n
              ? H-field measurements of a WD emitted via the audio transducer associated with the T-Coil<br />\n
              mode of the hearing aid, for assessment of hearing aid performance<br />\n
              ? Measurements with the hearing aid and a simulation of the categorized WD T-Coil emissions to<br />\n
              assess the hearing aid RF immunity in the T-Coil mode<br />\n
              The WD’s RF and audio band emissions are measured. Hence, the following are measurements made for<br />\n
              the WDs:<br />\n
              1) RF E-field emissions<br />\n
              2) RF H-field emissions<br />\n
              3) T-Coil mode, magnetic signal strength in the audio band<br />\n
              4) T-Coil mode, magnetic signal and noise articulation index<br />\n
              5) T-Coil mode, magnetic signal frequency response through the audio band<br />\n
              Corresponding to these quantities, the hearing aid is measured for the following:<br />\n
              a) RF immunity in microphone mode<br />\n
              b) RF immunity in T-Coil mode<br />\n
              The hearing aid T-Coil reception characteristics are also important when assuring the usability of the T-Coil mode. When these characteristics are coordinated, the goals of compatibility and accessibility are accomplished.<br />\n
              Two principal conditions expose hearing aid equipped users to undesired RF electromagnetic disturbances. The far-field condition corresponds to the type of field a hearing aid equipped bystander would experience when adjacent to a WD user. The near-field condition corresponds to the more intense fields that a hearing aid equipped user of a WD would experience. This standard assesses the near-field or user condition.<br />\n
              This standard describes preferred test methods and test facilities and, in some cases, alternative test methods and facilities. If alternative test methods or facilities are employed, every effort shall be made to establish correlation with the preferred ones. Any deviation from the preferred test methods, as set forth in this standard, shall be fully described in the test report.<br />\n
              Wherever the word shall is used in this standard, it indicates something mandatory. The word should indicates something that is advisory. The word may indicates an option, which is at the discretion of the test engineer.
              """
            #metaKeywords: null
            #metaDescription: null
            #shortDescription: "American National Standard Methods of Measurement for Hearing Aid Compatibility with Wireless Communications"
            -notes: "Superseded"
          }
        ]
        #currentLocale: "en_US"
        #currentTranslation: null
        #fallbackLocale: "en_US"
        #variantSelectionMethod: "match"
        #productTaxons: Doctrine\ORM\PersistentCollection {#7533 …}
        #channels: Doctrine\ORM\PersistentCollection {#7627 …}
        #mainTaxon: Proxies\__CG__\App\Entity\Taxonomy\Taxon {#7311 …}
        #reviews: Doctrine\ORM\PersistentCollection {#7612 …}
        #averageRating: 0.0
        #images: Doctrine\ORM\PersistentCollection {#7644 …}
        -supplier: Proxies\__CG__\App\Entity\Supplier\Supplier {#7325 …}
        -subscriptionCollections: Doctrine\ORM\PersistentCollection {#7389 …}
        -apiLastModifiedAt: DateTime @1754517600 {#7317
          date: 2025-08-07 00:00:00.0 Europe/Paris (+02:00)
        }
        -lastUpdatedAt: DateTime @1578006000 {#7292
          date: 2020-01-03 00:00:00.0 Europe/Paris (+01:00)
        }
        -author: ""
        -publishedAt: DateTime @1181253600 {#7318
          date: 2007-06-08 00:00:00.0 Europe/Paris (+02:00)
        }
        -releasedAt: null
        -confirmedAt: null
        -canceledAt: null
        -edition: null
        -coreDocument: "C63.19"
        -bookCollection: ""
        -pageCount: 141
        -documents: Doctrine\ORM\PersistentCollection {#7464 …}
        -favorites: Doctrine\ORM\PersistentCollection {#7499 …}
      }
      #optionValues: Doctrine\ORM\PersistentCollection {#8319 …}
      #position: 0
      #createdAt: DateTime @1751041196 {#7283
        date: 2025-06-27 18:19:56.0 Europe/Paris (+02:00)
      }
      #updatedAt: DateTime @1755611983 {#8120
        date: 2025-08-19 15:59:43.0 Europe/Paris (+02:00)
      }
      #enabled: true
      #translations: Doctrine\ORM\PersistentCollection {#8263 …}
      #translationsCache: [
        "en_US" => App\Entity\Product\ProductVariantTranslation {#93238
          #locale: "en_US"
          #translatable: App\Entity\Product\ProductVariant {#8103}
          #id: 4503
          #name: null
          -shortDescription: null
          -description: null
          -notes: null
          -shippingInformation: "Instant download"
        }
      ]
      #currentLocale: "en_US"
      #currentTranslation: null
      #fallbackLocale: "en_US"
      #version: 9
      #onHold: 0
      #onHand: 0
      #tracked: false
      #weight: 0.0
      #width: null
      #height: null
      #depth: null
      #taxCategory: Proxies\__CG__\App\Entity\Taxation\TaxCategory {#8135 …}
      #shippingCategory: null
      #channelPricings: Doctrine\ORM\PersistentCollection {#8297 …}
      #shippingRequired: true
      #images: Doctrine\ORM\PersistentCollection {#8294 …}
      -apiLastModifiedAt: DateTime @1753740000 {#8102
        date: 2025-07-29 00:00:00.0 Europe/Paris (+02:00)
      }
      -publishedAt: null
      -isbn: "978-0-7381-5614-9"
      -ean: "9780738156149"
      -numberOfUsers: 1
      -physicalProduct: false
      -downloadableImmediately: true
      -downloadable: true
      -drmViewerUrl: "https://online-viewer.normadoc.com/nZTcCB"
      -sellable: true
      -documents: Doctrine\ORM\PersistentCollection {#8131 …}
      -drmTokens: Doctrine\ORM\PersistentCollection {#8123 …}
      -enabledForSubscribers: true
      -currentAreaContext: null
    }
    #productName: null
    #variantName: null
  }
}
View Format same as normalized format

Submitted Data

This form was not submitted.

Passed Options

Option Passed Value Resolved Value
data
Sylius\Bundle\OrderBundle\Controller\AddToCartCommand {#114066
  -cart: App\Entity\Order\Order {#13364 …}
  -cartItem: App\Entity\Order\OrderItem {#114054
    #id: null
    #order: null
    #quantity: 1
    #unitPrice: 0
    #originalUnitPrice: 0
    #total: 0
    #immutable: false
    #units: Doctrine\Common\Collections\ArrayCollection {#114078 …}
    #unitsTotal: 0
    #adjustments: Doctrine\Common\Collections\ArrayCollection {#114079 …}
    #adjustmentsTotal: 0
    #version: 1
    #variant: App\Entity\Product\ProductVariant {#8103
      #id: 4485
      #code: "IEEE00004187PDF"
      #product: App\Entity\Product\Product {#7310
        #id: 10332
        #code: "IEEE00004187"
        #attributes: Doctrine\ORM\PersistentCollection {#7700 …}
        #variants: Doctrine\ORM\PersistentCollection {#7743 …}
        #options: Doctrine\ORM\PersistentCollection {#7915
          #collection: Doctrine\Common\Collections\ArrayCollection {#7917 …}
          #initialized: true
          -snapshot: [ …4]
          -owner: App\Entity\Product\Product {#7310}
          -association: [ …21]
          -em: ContainerHAOxQ06\EntityManagerGhostEbeb667 {#775 …}
          -backRefFieldName: null
          -typeClass: Symfony\Component\VarDumper\Caster\CutStub {#224923 …}
          -isDirty: false
        }
        #associations: Doctrine\ORM\PersistentCollection {#7899 …}
        #createdAt: DateTime @1751038995 {#7274
          date: 2025-06-27 17:43:15.0 Europe/Paris (+02:00)
        }
        #updatedAt: DateTime @1754607611 {#7322
          date: 2025-08-08 01:00:11.0 Europe/Paris (+02:00)
        }
        #enabled: true
        #translations: Doctrine\ORM\PersistentCollection {#7921 …}
        #translationsCache: [
          "en_US" => App\Entity\Product\ProductTranslation {#7920
            #locale: "en_US"
            #translatable: App\Entity\Product\Product {#7310}
            #id: 36337
            #name: "IEEE C63.19:2007"
            #slug: "ieee-c63-19-2007-ieee00004187-241984"
            #description: """
              New IEEE Standard - Superseded.<br />\n
              Uniform methods of measurement for compatibility between hearing aids and wireless communications devices are set forth.<br />\n
              \t\t\t\t<br />\n
              This standard applies to both wireless communications devices (WDs) and hearing aids. It sets forth uniform methods of measurement and parametric requirements for the electromagnetic and operational compatibility and accessibility of hearing aids used with WDs, including cordless, cellular, personal communications service (PCS) phones, and voice over internet protocol (VoIP) devices, operating in the range of 800 MHz to 3 GHz. However, this version is focused on existing services, which are in common use. Accordingly, in this version tests are provided for services in the 800 MHz to 950 MHz and 1.6 GHz to 2.5 GHz frequency bands. Future versions may add tests for other frequency bands, as they come into more common use.<br />\n
              This standard is intended to apply to all types of hearing aids with acoustic output, including, as examples, behind-the-ear (BTE), in-the-ear (ITE), in-the-canal (ITC), and completely-in-the-canal (CIC) types. Test methods are provided for hearing aids operating in acoustic (microphone input) mode or in tele-coil (T-Coil) input mode.<br />\n
              The field levels called for in various places shall be maintained within the limits for radio frequency (RF) safety, set forth in IEEE Std C95.1.1<br />\n
              The purpose of this standard is to establish categories for hearing aids and for WDs that can indicate to healthcare practitioners and hearing aid users which hearing aids are compatible with which WDs and to provide tests that can be used to assess the electromagnetic characteristics of hearing aids and WDs and assign them to these categories. The various parameters required, in order to demonstrate compatibility and accessibility are measured. The design of the standard is such that when a hearing aid and WD achieve one of the categories specified, as measured by the methodology of this standard, the indicated performance is realized.<br />\n
              In order to provide for the usability of a hearing aid with a WD, several factors must be coordinated as follows:<br />\n
              ? RF measurements of the near-field electric (E) and magnetic (H) fields emitted by a WD to<br />\n
              categorize these emissions for correlation with the RF immunity of a hearing aid<br />\n
              ? H-field measurements of a WD emitted via the audio transducer associated with the T-Coil<br />\n
              mode of the hearing aid, for assessment of hearing aid performance<br />\n
              ? Measurements with the hearing aid and a simulation of the categorized WD T-Coil emissions to<br />\n
              assess the hearing aid RF immunity in the T-Coil mode<br />\n
              The WD’s RF and audio band emissions are measured. Hence, the following are measurements made for<br />\n
              the WDs:<br />\n
              1) RF E-field emissions<br />\n
              2) RF H-field emissions<br />\n
              3) T-Coil mode, magnetic signal strength in the audio band<br />\n
              4) T-Coil mode, magnetic signal and noise articulation index<br />\n
              5) T-Coil mode, magnetic signal frequency response through the audio band<br />\n
              Corresponding to these quantities, the hearing aid is measured for the following:<br />\n
              a) RF immunity in microphone mode<br />\n
              b) RF immunity in T-Coil mode<br />\n
              The hearing aid T-Coil reception characteristics are also important when assuring the usability of the T-Coil mode. When these characteristics are coordinated, the goals of compatibility and accessibility are accomplished.<br />\n
              Two principal conditions expose hearing aid equipped users to undesired RF electromagnetic disturbances. The far-field condition corresponds to the type of field a hearing aid equipped bystander would experience when adjacent to a WD user. The near-field condition corresponds to the more intense fields that a hearing aid equipped user of a WD would experience. This standard assesses the near-field or user condition.<br />\n
              This standard describes preferred test methods and test facilities and, in some cases, alternative test methods and facilities. If alternative test methods or facilities are employed, every effort shall be made to establish correlation with the preferred ones. Any deviation from the preferred test methods, as set forth in this standard, shall be fully described in the test report.<br />\n
              Wherever the word shall is used in this standard, it indicates something mandatory. The word should indicates something that is advisory. The word may indicates an option, which is at the discretion of the test engineer.
              """
            #metaKeywords: null
            #metaDescription: null
            #shortDescription: "American National Standard Methods of Measurement for Hearing Aid Compatibility with Wireless Communications"
            -notes: "Superseded"
          }
        ]
        #currentLocale: "en_US"
        #currentTranslation: null
        #fallbackLocale: "en_US"
        #variantSelectionMethod: "match"
        #productTaxons: Doctrine\ORM\PersistentCollection {#7533 …}
        #channels: Doctrine\ORM\PersistentCollection {#7627 …}
        #mainTaxon: Proxies\__CG__\App\Entity\Taxonomy\Taxon {#7311 …}
        #reviews: Doctrine\ORM\PersistentCollection {#7612 …}
        #averageRating: 0.0
        #images: Doctrine\ORM\PersistentCollection {#7644 …}
        -supplier: Proxies\__CG__\App\Entity\Supplier\Supplier {#7325 …}
        -subscriptionCollections: Doctrine\ORM\PersistentCollection {#7389 …}
        -apiLastModifiedAt: DateTime @1754517600 {#7317
          date: 2025-08-07 00:00:00.0 Europe/Paris (+02:00)
        }
        -lastUpdatedAt: DateTime @1578006000 {#7292
          date: 2020-01-03 00:00:00.0 Europe/Paris (+01:00)
        }
        -author: ""
        -publishedAt: DateTime @1181253600 {#7318
          date: 2007-06-08 00:00:00.0 Europe/Paris (+02:00)
        }
        -releasedAt: null
        -confirmedAt: null
        -canceledAt: null
        -edition: null
        -coreDocument: "C63.19"
        -bookCollection: ""
        -pageCount: 141
        -documents: Doctrine\ORM\PersistentCollection {#7464 …}
        -favorites: Doctrine\ORM\PersistentCollection {#7499 …}
      }
      #optionValues: Doctrine\ORM\PersistentCollection {#8319 …}
      #position: 0
      #createdAt: DateTime @1751041196 {#7283
        date: 2025-06-27 18:19:56.0 Europe/Paris (+02:00)
      }
      #updatedAt: DateTime @1755611983 {#8120
        date: 2025-08-19 15:59:43.0 Europe/Paris (+02:00)
      }
      #enabled: true
      #translations: Doctrine\ORM\PersistentCollection {#8263 …}
      #translationsCache: [
        "en_US" => App\Entity\Product\ProductVariantTranslation {#93238
          #locale: "en_US"
          #translatable: App\Entity\Product\ProductVariant {#8103}
          #id: 4503
          #name: null
          -shortDescription: null
          -description: null
          -notes: null
          -shippingInformation: "Instant download"
        }
      ]
      #currentLocale: "en_US"
      #currentTranslation: null
      #fallbackLocale: "en_US"
      #version: 9
      #onHold: 0
      #onHand: 0
      #tracked: false
      #weight: 0.0
      #width: null
      #height: null
      #depth: null
      #taxCategory: Proxies\__CG__\App\Entity\Taxation\TaxCategory {#8135 …}
      #shippingCategory: null
      #channelPricings: Doctrine\ORM\PersistentCollection {#8297 …}
      #shippingRequired: true
      #images: Doctrine\ORM\PersistentCollection {#8294 …}
      -apiLastModifiedAt: DateTime @1753740000 {#8102
        date: 2025-07-29 00:00:00.0 Europe/Paris (+02:00)
      }
      -publishedAt: null
      -isbn: "978-0-7381-5614-9"
      -ean: "9780738156149"
      -numberOfUsers: 1
      -physicalProduct: false
      -downloadableImmediately: true
      -downloadable: true
      -drmViewerUrl: "https://online-viewer.normadoc.com/nZTcCB"
      -sellable: true
      -documents: Doctrine\ORM\PersistentCollection {#8131 …}
      -drmTokens: Doctrine\ORM\PersistentCollection {#8123 …}
      -enabledForSubscribers: true
      -currentAreaContext: null
    }
    #productName: null
    #variantName: null
  }
}
same as passed value
product
App\Entity\Product\Product {#7310
  #id: 10332
  #code: "IEEE00004187"
  #attributes: Doctrine\ORM\PersistentCollection {#7700 …}
  #variants: Doctrine\ORM\PersistentCollection {#7743 …}
  #options: Doctrine\ORM\PersistentCollection {#7915
    #collection: Doctrine\Common\Collections\ArrayCollection {#7917 …}
    #initialized: true
    -snapshot: [ …4]
    -owner: App\Entity\Product\Product {#7310}
    -association: [ …21]
    -em: ContainerHAOxQ06\EntityManagerGhostEbeb667 {#775 …}
    -backRefFieldName: null
    -typeClass: Symfony\Component\VarDumper\Caster\CutStub {#224923 …}
    -isDirty: false
  }
  #associations: Doctrine\ORM\PersistentCollection {#7899 …}
  #createdAt: DateTime @1751038995 {#7274
    date: 2025-06-27 17:43:15.0 Europe/Paris (+02:00)
  }
  #updatedAt: DateTime @1754607611 {#7322
    date: 2025-08-08 01:00:11.0 Europe/Paris (+02:00)
  }
  #enabled: true
  #translations: Doctrine\ORM\PersistentCollection {#7921 …}
  #translationsCache: [
    "en_US" => App\Entity\Product\ProductTranslation {#7920
      #locale: "en_US"
      #translatable: App\Entity\Product\Product {#7310}
      #id: 36337
      #name: "IEEE C63.19:2007"
      #slug: "ieee-c63-19-2007-ieee00004187-241984"
      #description: """
        New IEEE Standard - Superseded.<br />\n
        Uniform methods of measurement for compatibility between hearing aids and wireless communications devices are set forth.<br />\n
        \t\t\t\t<br />\n
        This standard applies to both wireless communications devices (WDs) and hearing aids. It sets forth uniform methods of measurement and parametric requirements for the electromagnetic and operational compatibility and accessibility of hearing aids used with WDs, including cordless, cellular, personal communications service (PCS) phones, and voice over internet protocol (VoIP) devices, operating in the range of 800 MHz to 3 GHz. However, this version is focused on existing services, which are in common use. Accordingly, in this version tests are provided for services in the 800 MHz to 950 MHz and 1.6 GHz to 2.5 GHz frequency bands. Future versions may add tests for other frequency bands, as they come into more common use.<br />\n
        This standard is intended to apply to all types of hearing aids with acoustic output, including, as examples, behind-the-ear (BTE), in-the-ear (ITE), in-the-canal (ITC), and completely-in-the-canal (CIC) types. Test methods are provided for hearing aids operating in acoustic (microphone input) mode or in tele-coil (T-Coil) input mode.<br />\n
        The field levels called for in various places shall be maintained within the limits for radio frequency (RF) safety, set forth in IEEE Std C95.1.1<br />\n
        The purpose of this standard is to establish categories for hearing aids and for WDs that can indicate to healthcare practitioners and hearing aid users which hearing aids are compatible with which WDs and to provide tests that can be used to assess the electromagnetic characteristics of hearing aids and WDs and assign them to these categories. The various parameters required, in order to demonstrate compatibility and accessibility are measured. The design of the standard is such that when a hearing aid and WD achieve one of the categories specified, as measured by the methodology of this standard, the indicated performance is realized.<br />\n
        In order to provide for the usability of a hearing aid with a WD, several factors must be coordinated as follows:<br />\n
        ? RF measurements of the near-field electric (E) and magnetic (H) fields emitted by a WD to<br />\n
        categorize these emissions for correlation with the RF immunity of a hearing aid<br />\n
        ? H-field measurements of a WD emitted via the audio transducer associated with the T-Coil<br />\n
        mode of the hearing aid, for assessment of hearing aid performance<br />\n
        ? Measurements with the hearing aid and a simulation of the categorized WD T-Coil emissions to<br />\n
        assess the hearing aid RF immunity in the T-Coil mode<br />\n
        The WD’s RF and audio band emissions are measured. Hence, the following are measurements made for<br />\n
        the WDs:<br />\n
        1) RF E-field emissions<br />\n
        2) RF H-field emissions<br />\n
        3) T-Coil mode, magnetic signal strength in the audio band<br />\n
        4) T-Coil mode, magnetic signal and noise articulation index<br />\n
        5) T-Coil mode, magnetic signal frequency response through the audio band<br />\n
        Corresponding to these quantities, the hearing aid is measured for the following:<br />\n
        a) RF immunity in microphone mode<br />\n
        b) RF immunity in T-Coil mode<br />\n
        The hearing aid T-Coil reception characteristics are also important when assuring the usability of the T-Coil mode. When these characteristics are coordinated, the goals of compatibility and accessibility are accomplished.<br />\n
        Two principal conditions expose hearing aid equipped users to undesired RF electromagnetic disturbances. The far-field condition corresponds to the type of field a hearing aid equipped bystander would experience when adjacent to a WD user. The near-field condition corresponds to the more intense fields that a hearing aid equipped user of a WD would experience. This standard assesses the near-field or user condition.<br />\n
        This standard describes preferred test methods and test facilities and, in some cases, alternative test methods and facilities. If alternative test methods or facilities are employed, every effort shall be made to establish correlation with the preferred ones. Any deviation from the preferred test methods, as set forth in this standard, shall be fully described in the test report.<br />\n
        Wherever the word shall is used in this standard, it indicates something mandatory. The word should indicates something that is advisory. The word may indicates an option, which is at the discretion of the test engineer.
        """
      #metaKeywords: null
      #metaDescription: null
      #shortDescription: "American National Standard Methods of Measurement for Hearing Aid Compatibility with Wireless Communications"
      -notes: "Superseded"
    }
  ]
  #currentLocale: "en_US"
  #currentTranslation: null
  #fallbackLocale: "en_US"
  #variantSelectionMethod: "match"
  #productTaxons: Doctrine\ORM\PersistentCollection {#7533 …}
  #channels: Doctrine\ORM\PersistentCollection {#7627 …}
  #mainTaxon: Proxies\__CG__\App\Entity\Taxonomy\Taxon {#7311 …}
  #reviews: Doctrine\ORM\PersistentCollection {#7612 …}
  #averageRating: 0.0
  #images: Doctrine\ORM\PersistentCollection {#7644 …}
  -supplier: Proxies\__CG__\App\Entity\Supplier\Supplier {#7325 …}
  -subscriptionCollections: Doctrine\ORM\PersistentCollection {#7389 …}
  -apiLastModifiedAt: DateTime @1754517600 {#7317
    date: 2025-08-07 00:00:00.0 Europe/Paris (+02:00)
  }
  -lastUpdatedAt: DateTime @1578006000 {#7292
    date: 2020-01-03 00:00:00.0 Europe/Paris (+01:00)
  }
  -author: ""
  -publishedAt: DateTime @1181253600 {#7318
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  -confirmedAt: null
  -canceledAt: null
  -edition: null
  -coreDocument: "C63.19"
  -bookCollection: ""
  -pageCount: 141
  -documents: Doctrine\ORM\PersistentCollection {#7464 …}
  -favorites: Doctrine\ORM\PersistentCollection {#7499 …}
}
same as passed value

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""
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false
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attr_translation_parameters
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"_token"
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null
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Symfony\Component\Security\Csrf\CsrfTokenManager {#114086
  -generator: Symfony\Component\Security\Csrf\TokenGenerator\UriSafeTokenGenerator {#114087 …}
  -storage: Symfony\Component\Security\Csrf\TokenStorage\SessionTokenStorage {#114088 …}
  -namespace: Closure() {#114090 …}
}
data
Sylius\Bundle\OrderBundle\Controller\AddToCartCommand {#114066
  -cart: App\Entity\Order\Order {#13364 …}
  -cartItem: App\Entity\Order\OrderItem {#114054
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    #order: null
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    #units: Doctrine\Common\Collections\ArrayCollection {#114078 …}
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    #adjustments: Doctrine\Common\Collections\ArrayCollection {#114079 …}
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    #version: 1
    #variant: App\Entity\Product\ProductVariant {#8103
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      #code: "IEEE00004187PDF"
      #product: App\Entity\Product\Product {#7310
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        #code: "IEEE00004187"
        #attributes: Doctrine\ORM\PersistentCollection {#7700 …}
        #variants: Doctrine\ORM\PersistentCollection {#7743 …}
        #options: Doctrine\ORM\PersistentCollection {#7915
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          -snapshot: [ …4]
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          -association: [ …21]
          -em: ContainerHAOxQ06\EntityManagerGhostEbeb667 {#775 …}
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          -typeClass: Symfony\Component\VarDumper\Caster\CutStub {#224923 …}
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        #associations: Doctrine\ORM\PersistentCollection {#7899 …}
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        }
        #enabled: true
        #translations: Doctrine\ORM\PersistentCollection {#7921 …}
        #translationsCache: [
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            #translatable: App\Entity\Product\Product {#7310}
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            #name: "IEEE C63.19:2007"
            #slug: "ieee-c63-19-2007-ieee00004187-241984"
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              New IEEE Standard - Superseded.<br />\n
              Uniform methods of measurement for compatibility between hearing aids and wireless communications devices are set forth.<br />\n
              \t\t\t\t<br />\n
              This standard applies to both wireless communications devices (WDs) and hearing aids. It sets forth uniform methods of measurement and parametric requirements for the electromagnetic and operational compatibility and accessibility of hearing aids used with WDs, including cordless, cellular, personal communications service (PCS) phones, and voice over internet protocol (VoIP) devices, operating in the range of 800 MHz to 3 GHz. However, this version is focused on existing services, which are in common use. Accordingly, in this version tests are provided for services in the 800 MHz to 950 MHz and 1.6 GHz to 2.5 GHz frequency bands. Future versions may add tests for other frequency bands, as they come into more common use.<br />\n
              This standard is intended to apply to all types of hearing aids with acoustic output, including, as examples, behind-the-ear (BTE), in-the-ear (ITE), in-the-canal (ITC), and completely-in-the-canal (CIC) types. Test methods are provided for hearing aids operating in acoustic (microphone input) mode or in tele-coil (T-Coil) input mode.<br />\n
              The field levels called for in various places shall be maintained within the limits for radio frequency (RF) safety, set forth in IEEE Std C95.1.1<br />\n
              The purpose of this standard is to establish categories for hearing aids and for WDs that can indicate to healthcare practitioners and hearing aid users which hearing aids are compatible with which WDs and to provide tests that can be used to assess the electromagnetic characteristics of hearing aids and WDs and assign them to these categories. The various parameters required, in order to demonstrate compatibility and accessibility are measured. The design of the standard is such that when a hearing aid and WD achieve one of the categories specified, as measured by the methodology of this standard, the indicated performance is realized.<br />\n
              In order to provide for the usability of a hearing aid with a WD, several factors must be coordinated as follows:<br />\n
              ? RF measurements of the near-field electric (E) and magnetic (H) fields emitted by a WD to<br />\n
              categorize these emissions for correlation with the RF immunity of a hearing aid<br />\n
              ? H-field measurements of a WD emitted via the audio transducer associated with the T-Coil<br />\n
              mode of the hearing aid, for assessment of hearing aid performance<br />\n
              ? Measurements with the hearing aid and a simulation of the categorized WD T-Coil emissions to<br />\n
              assess the hearing aid RF immunity in the T-Coil mode<br />\n
              The WD’s RF and audio band emissions are measured. Hence, the following are measurements made for<br />\n
              the WDs:<br />\n
              1) RF E-field emissions<br />\n
              2) RF H-field emissions<br />\n
              3) T-Coil mode, magnetic signal strength in the audio band<br />\n
              4) T-Coil mode, magnetic signal and noise articulation index<br />\n
              5) T-Coil mode, magnetic signal frequency response through the audio band<br />\n
              Corresponding to these quantities, the hearing aid is measured for the following:<br />\n
              a) RF immunity in microphone mode<br />\n
              b) RF immunity in T-Coil mode<br />\n
              The hearing aid T-Coil reception characteristics are also important when assuring the usability of the T-Coil mode. When these characteristics are coordinated, the goals of compatibility and accessibility are accomplished.<br />\n
              Two principal conditions expose hearing aid equipped users to undesired RF electromagnetic disturbances. The far-field condition corresponds to the type of field a hearing aid equipped bystander would experience when adjacent to a WD user. The near-field condition corresponds to the more intense fields that a hearing aid equipped user of a WD would experience. This standard assesses the near-field or user condition.<br />\n
              This standard describes preferred test methods and test facilities and, in some cases, alternative test methods and facilities. If alternative test methods or facilities are employed, every effort shall be made to establish correlation with the preferred ones. Any deviation from the preferred test methods, as set forth in this standard, shall be fully described in the test report.<br />\n
              Wherever the word shall is used in this standard, it indicates something mandatory. The word should indicates something that is advisory. The word may indicates an option, which is at the discretion of the test engineer.
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            #metaKeywords: null
            #metaDescription: null
            #shortDescription: "American National Standard Methods of Measurement for Hearing Aid Compatibility with Wireless Communications"
            -notes: "Superseded"
          }
        ]
        #currentLocale: "en_US"
        #currentTranslation: null
        #fallbackLocale: "en_US"
        #variantSelectionMethod: "match"
        #productTaxons: Doctrine\ORM\PersistentCollection {#7533 …}
        #channels: Doctrine\ORM\PersistentCollection {#7627 …}
        #mainTaxon: Proxies\__CG__\App\Entity\Taxonomy\Taxon {#7311 …}
        #reviews: Doctrine\ORM\PersistentCollection {#7612 …}
        #averageRating: 0.0
        #images: Doctrine\ORM\PersistentCollection {#7644 …}
        -supplier: Proxies\__CG__\App\Entity\Supplier\Supplier {#7325 …}
        -subscriptionCollections: Doctrine\ORM\PersistentCollection {#7389 …}
        -apiLastModifiedAt: DateTime @1754517600 {#7317
          date: 2025-08-07 00:00:00.0 Europe/Paris (+02:00)
        }
        -lastUpdatedAt: DateTime @1578006000 {#7292
          date: 2020-01-03 00:00:00.0 Europe/Paris (+01:00)
        }
        -author: ""
        -publishedAt: DateTime @1181253600 {#7318
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        }
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        -edition: null
        -coreDocument: "C63.19"
        -bookCollection: ""
        -pageCount: 141
        -documents: Doctrine\ORM\PersistentCollection {#7464 …}
        -favorites: Doctrine\ORM\PersistentCollection {#7499 …}
      }
      #optionValues: Doctrine\ORM\PersistentCollection {#8319 …}
      #position: 0
      #createdAt: DateTime @1751041196 {#7283
        date: 2025-06-27 18:19:56.0 Europe/Paris (+02:00)
      }
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        date: 2025-08-19 15:59:43.0 Europe/Paris (+02:00)
      }
      #enabled: true
      #translations: Doctrine\ORM\PersistentCollection {#8263 …}
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          #name: null
          -shortDescription: null
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          -notes: null
          -shippingInformation: "Instant download"
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      #taxCategory: Proxies\__CG__\App\Entity\Taxation\TaxCategory {#8135 …}
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      #shippingRequired: true
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        date: 2025-07-29 00:00:00.0 Europe/Paris (+02:00)
      }
      -publishedAt: null
      -isbn: "978-0-7381-5614-9"
      -ean: "9780738156149"
      -numberOfUsers: 1
      -physicalProduct: false
      -downloadableImmediately: true
      -downloadable: true
      -drmViewerUrl: "https://online-viewer.normadoc.com/nZTcCB"
      -sellable: true
      -documents: Doctrine\ORM\PersistentCollection {#8131 …}
      -drmTokens: Doctrine\ORM\PersistentCollection {#8123 …}
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disabled
false
empty_data
Closure(FormInterface $form) {#114113
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  use: {
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  }
}
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form_attr
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getter
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help_translation_parameters
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label_translation_parameters
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method
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post_max_size_message
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priority
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product
App\Entity\Product\Product {#7310
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  #code: "IEEE00004187"
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  #variants: Doctrine\ORM\PersistentCollection {#7743 …}
  #options: Doctrine\ORM\PersistentCollection {#7915
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    -typeClass: Symfony\Component\VarDumper\Caster\CutStub {#224923 …}
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  }
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  }
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      #locale: "en_US"
      #translatable: App\Entity\Product\Product {#7310}
      #id: 36337
      #name: "IEEE C63.19:2007"
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      #description: """
        New IEEE Standard - Superseded.<br />\n
        Uniform methods of measurement for compatibility between hearing aids and wireless communications devices are set forth.<br />\n
        \t\t\t\t<br />\n
        This standard applies to both wireless communications devices (WDs) and hearing aids. It sets forth uniform methods of measurement and parametric requirements for the electromagnetic and operational compatibility and accessibility of hearing aids used with WDs, including cordless, cellular, personal communications service (PCS) phones, and voice over internet protocol (VoIP) devices, operating in the range of 800 MHz to 3 GHz. However, this version is focused on existing services, which are in common use. Accordingly, in this version tests are provided for services in the 800 MHz to 950 MHz and 1.6 GHz to 2.5 GHz frequency bands. Future versions may add tests for other frequency bands, as they come into more common use.<br />\n
        This standard is intended to apply to all types of hearing aids with acoustic output, including, as examples, behind-the-ear (BTE), in-the-ear (ITE), in-the-canal (ITC), and completely-in-the-canal (CIC) types. Test methods are provided for hearing aids operating in acoustic (microphone input) mode or in tele-coil (T-Coil) input mode.<br />\n
        The field levels called for in various places shall be maintained within the limits for radio frequency (RF) safety, set forth in IEEE Std C95.1.1<br />\n
        The purpose of this standard is to establish categories for hearing aids and for WDs that can indicate to healthcare practitioners and hearing aid users which hearing aids are compatible with which WDs and to provide tests that can be used to assess the electromagnetic characteristics of hearing aids and WDs and assign them to these categories. The various parameters required, in order to demonstrate compatibility and accessibility are measured. The design of the standard is such that when a hearing aid and WD achieve one of the categories specified, as measured by the methodology of this standard, the indicated performance is realized.<br />\n
        In order to provide for the usability of a hearing aid with a WD, several factors must be coordinated as follows:<br />\n
        ? RF measurements of the near-field electric (E) and magnetic (H) fields emitted by a WD to<br />\n
        categorize these emissions for correlation with the RF immunity of a hearing aid<br />\n
        ? H-field measurements of a WD emitted via the audio transducer associated with the T-Coil<br />\n
        mode of the hearing aid, for assessment of hearing aid performance<br />\n
        ? Measurements with the hearing aid and a simulation of the categorized WD T-Coil emissions to<br />\n
        assess the hearing aid RF immunity in the T-Coil mode<br />\n
        The WD’s RF and audio band emissions are measured. Hence, the following are measurements made for<br />\n
        the WDs:<br />\n
        1) RF E-field emissions<br />\n
        2) RF H-field emissions<br />\n
        3) T-Coil mode, magnetic signal strength in the audio band<br />\n
        4) T-Coil mode, magnetic signal and noise articulation index<br />\n
        5) T-Coil mode, magnetic signal frequency response through the audio band<br />\n
        Corresponding to these quantities, the hearing aid is measured for the following:<br />\n
        a) RF immunity in microphone mode<br />\n
        b) RF immunity in T-Coil mode<br />\n
        The hearing aid T-Coil reception characteristics are also important when assuring the usability of the T-Coil mode. When these characteristics are coordinated, the goals of compatibility and accessibility are accomplished.<br />\n
        Two principal conditions expose hearing aid equipped users to undesired RF electromagnetic disturbances. The far-field condition corresponds to the type of field a hearing aid equipped bystander would experience when adjacent to a WD user. The near-field condition corresponds to the more intense fields that a hearing aid equipped user of a WD would experience. This standard assesses the near-field or user condition.<br />\n
        This standard describes preferred test methods and test facilities and, in some cases, alternative test methods and facilities. If alternative test methods or facilities are employed, every effort shall be made to establish correlation with the preferred ones. Any deviation from the preferred test methods, as set forth in this standard, shall be fully described in the test report.<br />\n
        Wherever the word shall is used in this standard, it indicates something mandatory. The word should indicates something that is advisory. The word may indicates an option, which is at the discretion of the test engineer.
        """
      #metaKeywords: null
      #metaDescription: null
      #shortDescription: "American National Standard Methods of Measurement for Hearing Aid Compatibility with Wireless Communications"
      -notes: "Superseded"
    }
  ]
  #currentLocale: "en_US"
  #currentTranslation: null
  #fallbackLocale: "en_US"
  #variantSelectionMethod: "match"
  #productTaxons: Doctrine\ORM\PersistentCollection {#7533 …}
  #channels: Doctrine\ORM\PersistentCollection {#7627 …}
  #mainTaxon: Proxies\__CG__\App\Entity\Taxonomy\Taxon {#7311 …}
  #reviews: Doctrine\ORM\PersistentCollection {#7612 …}
  #averageRating: 0.0
  #images: Doctrine\ORM\PersistentCollection {#7644 …}
  -supplier: Proxies\__CG__\App\Entity\Supplier\Supplier {#7325 …}
  -subscriptionCollections: Doctrine\ORM\PersistentCollection {#7389 …}
  -apiLastModifiedAt: DateTime @1754517600 {#7317
    date: 2025-08-07 00:00:00.0 Europe/Paris (+02:00)
  }
  -lastUpdatedAt: DateTime @1578006000 {#7292
    date: 2020-01-03 00:00:00.0 Europe/Paris (+01:00)
  }
  -author: ""
  -publishedAt: DateTime @1181253600 {#7318
    date: 2007-06-08 00:00:00.0 Europe/Paris (+02:00)
  }
  -releasedAt: null
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  -canceledAt: null
  -edition: null
  -coreDocument: "C63.19"
  -bookCollection: ""
  -pageCount: 141
  -documents: Doctrine\ORM\PersistentCollection {#7464 …}
  -favorites: Doctrine\ORM\PersistentCollection {#7499 …}
}
property_path
null
required
true
row_attr
[]
setter
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translation_domain
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trim
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upload_max_size_message
Closure() {#114115
  class: "Symfony\Component\Form\Extension\Validator\Type\UploadValidatorExtension"
  use: {
    $translator: Symfony\Component\Translation\DataCollectorTranslator {#2251 …}
    $message: Closure() {#114114 …}
    $translationDomain: "validators"
  }
}
validation_groups
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action
""
attr
[]
attr_translation_parameters
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cache_key
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compound
true
data
Sylius\Bundle\OrderBundle\Controller\AddToCartCommand {#114066
  -cart: App\Entity\Order\Order {#13364 …}
  -cartItem: App\Entity\Order\OrderItem {#114054
    #id: null
    #order: null
    #quantity: 1
    #unitPrice: 0
    #originalUnitPrice: 0
    #total: 0
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    #units: Doctrine\Common\Collections\ArrayCollection {#114078 …}
    #unitsTotal: 0
    #adjustments: Doctrine\Common\Collections\ArrayCollection {#114079 …}
    #adjustmentsTotal: 0
    #version: 1
    #variant: App\Entity\Product\ProductVariant {#8103
      #id: 4485
      #code: "IEEE00004187PDF"
      #product: App\Entity\Product\Product {#7310
        #id: 10332
        #code: "IEEE00004187"
        #attributes: Doctrine\ORM\PersistentCollection {#7700 …}
        #variants: Doctrine\ORM\PersistentCollection {#7743 …}
        #options: Doctrine\ORM\PersistentCollection {#7915
          #collection: Doctrine\Common\Collections\ArrayCollection {#7917 …}
          #initialized: true
          -snapshot: [ …4]
          -owner: App\Entity\Product\Product {#7310}
          -association: [ …21]
          -em: ContainerHAOxQ06\EntityManagerGhostEbeb667 {#775 …}
          -backRefFieldName: null
          -typeClass: Symfony\Component\VarDumper\Caster\CutStub {#224923 …}
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        #associations: Doctrine\ORM\PersistentCollection {#7899 …}
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        #translationsCache: [
          "en_US" => App\Entity\Product\ProductTranslation {#7920
            #locale: "en_US"
            #translatable: App\Entity\Product\Product {#7310}
            #id: 36337
            #name: "IEEE C63.19:2007"
            #slug: "ieee-c63-19-2007-ieee00004187-241984"
            #description: """
              New IEEE Standard - Superseded.<br />\n
              Uniform methods of measurement for compatibility between hearing aids and wireless communications devices are set forth.<br />\n
              \t\t\t\t<br />\n
              This standard applies to both wireless communications devices (WDs) and hearing aids. It sets forth uniform methods of measurement and parametric requirements for the electromagnetic and operational compatibility and accessibility of hearing aids used with WDs, including cordless, cellular, personal communications service (PCS) phones, and voice over internet protocol (VoIP) devices, operating in the range of 800 MHz to 3 GHz. However, this version is focused on existing services, which are in common use. Accordingly, in this version tests are provided for services in the 800 MHz to 950 MHz and 1.6 GHz to 2.5 GHz frequency bands. Future versions may add tests for other frequency bands, as they come into more common use.<br />\n
              This standard is intended to apply to all types of hearing aids with acoustic output, including, as examples, behind-the-ear (BTE), in-the-ear (ITE), in-the-canal (ITC), and completely-in-the-canal (CIC) types. Test methods are provided for hearing aids operating in acoustic (microphone input) mode or in tele-coil (T-Coil) input mode.<br />\n
              The field levels called for in various places shall be maintained within the limits for radio frequency (RF) safety, set forth in IEEE Std C95.1.1<br />\n
              The purpose of this standard is to establish categories for hearing aids and for WDs that can indicate to healthcare practitioners and hearing aid users which hearing aids are compatible with which WDs and to provide tests that can be used to assess the electromagnetic characteristics of hearing aids and WDs and assign them to these categories. The various parameters required, in order to demonstrate compatibility and accessibility are measured. The design of the standard is such that when a hearing aid and WD achieve one of the categories specified, as measured by the methodology of this standard, the indicated performance is realized.<br />\n
              In order to provide for the usability of a hearing aid with a WD, several factors must be coordinated as follows:<br />\n
              ? RF measurements of the near-field electric (E) and magnetic (H) fields emitted by a WD to<br />\n
              categorize these emissions for correlation with the RF immunity of a hearing aid<br />\n
              ? H-field measurements of a WD emitted via the audio transducer associated with the T-Coil<br />\n
              mode of the hearing aid, for assessment of hearing aid performance<br />\n
              ? Measurements with the hearing aid and a simulation of the categorized WD T-Coil emissions to<br />\n
              assess the hearing aid RF immunity in the T-Coil mode<br />\n
              The WD’s RF and audio band emissions are measured. Hence, the following are measurements made for<br />\n
              the WDs:<br />\n
              1) RF E-field emissions<br />\n
              2) RF H-field emissions<br />\n
              3) T-Coil mode, magnetic signal strength in the audio band<br />\n
              4) T-Coil mode, magnetic signal and noise articulation index<br />\n
              5) T-Coil mode, magnetic signal frequency response through the audio band<br />\n
              Corresponding to these quantities, the hearing aid is measured for the following:<br />\n
              a) RF immunity in microphone mode<br />\n
              b) RF immunity in T-Coil mode<br />\n
              The hearing aid T-Coil reception characteristics are also important when assuring the usability of the T-Coil mode. When these characteristics are coordinated, the goals of compatibility and accessibility are accomplished.<br />\n
              Two principal conditions expose hearing aid equipped users to undesired RF electromagnetic disturbances. The far-field condition corresponds to the type of field a hearing aid equipped bystander would experience when adjacent to a WD user. The near-field condition corresponds to the more intense fields that a hearing aid equipped user of a WD would experience. This standard assesses the near-field or user condition.<br />\n
              This standard describes preferred test methods and test facilities and, in some cases, alternative test methods and facilities. If alternative test methods or facilities are employed, every effort shall be made to establish correlation with the preferred ones. Any deviation from the preferred test methods, as set forth in this standard, shall be fully described in the test report.<br />\n
              Wherever the word shall is used in this standard, it indicates something mandatory. The word should indicates something that is advisory. The word may indicates an option, which is at the discretion of the test engineer.
              """
            #metaKeywords: null
            #metaDescription: null
            #shortDescription: "American National Standard Methods of Measurement for Hearing Aid Compatibility with Wireless Communications"
            -notes: "Superseded"
          }
        ]
        #currentLocale: "en_US"
        #currentTranslation: null
        #fallbackLocale: "en_US"
        #variantSelectionMethod: "match"
        #productTaxons: Doctrine\ORM\PersistentCollection {#7533 …}
        #channels: Doctrine\ORM\PersistentCollection {#7627 …}
        #mainTaxon: Proxies\__CG__\App\Entity\Taxonomy\Taxon {#7311 …}
        #reviews: Doctrine\ORM\PersistentCollection {#7612 …}
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            #name: "IEEE C63.19:2007"
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            #description: """
              New IEEE Standard - Superseded.<br />\n
              Uniform methods of measurement for compatibility between hearing aids and wireless communications devices are set forth.<br />\n
              \t\t\t\t<br />\n
              This standard applies to both wireless communications devices (WDs) and hearing aids. It sets forth uniform methods of measurement and parametric requirements for the electromagnetic and operational compatibility and accessibility of hearing aids used with WDs, including cordless, cellular, personal communications service (PCS) phones, and voice over internet protocol (VoIP) devices, operating in the range of 800 MHz to 3 GHz. However, this version is focused on existing services, which are in common use. Accordingly, in this version tests are provided for services in the 800 MHz to 950 MHz and 1.6 GHz to 2.5 GHz frequency bands. Future versions may add tests for other frequency bands, as they come into more common use.<br />\n
              This standard is intended to apply to all types of hearing aids with acoustic output, including, as examples, behind-the-ear (BTE), in-the-ear (ITE), in-the-canal (ITC), and completely-in-the-canal (CIC) types. Test methods are provided for hearing aids operating in acoustic (microphone input) mode or in tele-coil (T-Coil) input mode.<br />\n
              The field levels called for in various places shall be maintained within the limits for radio frequency (RF) safety, set forth in IEEE Std C95.1.1<br />\n
              The purpose of this standard is to establish categories for hearing aids and for WDs that can indicate to healthcare practitioners and hearing aid users which hearing aids are compatible with which WDs and to provide tests that can be used to assess the electromagnetic characteristics of hearing aids and WDs and assign them to these categories. The various parameters required, in order to demonstrate compatibility and accessibility are measured. The design of the standard is such that when a hearing aid and WD achieve one of the categories specified, as measured by the methodology of this standard, the indicated performance is realized.<br />\n
              In order to provide for the usability of a hearing aid with a WD, several factors must be coordinated as follows:<br />\n
              ? RF measurements of the near-field electric (E) and magnetic (H) fields emitted by a WD to<br />\n
              categorize these emissions for correlation with the RF immunity of a hearing aid<br />\n
              ? H-field measurements of a WD emitted via the audio transducer associated with the T-Coil<br />\n
              mode of the hearing aid, for assessment of hearing aid performance<br />\n
              ? Measurements with the hearing aid and a simulation of the categorized WD T-Coil emissions to<br />\n
              assess the hearing aid RF immunity in the T-Coil mode<br />\n
              The WD’s RF and audio band emissions are measured. Hence, the following are measurements made for<br />\n
              the WDs:<br />\n
              1) RF E-field emissions<br />\n
              2) RF H-field emissions<br />\n
              3) T-Coil mode, magnetic signal strength in the audio band<br />\n
              4) T-Coil mode, magnetic signal and noise articulation index<br />\n
              5) T-Coil mode, magnetic signal frequency response through the audio band<br />\n
              Corresponding to these quantities, the hearing aid is measured for the following:<br />\n
              a) RF immunity in microphone mode<br />\n
              b) RF immunity in T-Coil mode<br />\n
              The hearing aid T-Coil reception characteristics are also important when assuring the usability of the T-Coil mode. When these characteristics are coordinated, the goals of compatibility and accessibility are accomplished.<br />\n
              Two principal conditions expose hearing aid equipped users to undesired RF electromagnetic disturbances. The far-field condition corresponds to the type of field a hearing aid equipped bystander would experience when adjacent to a WD user. The near-field condition corresponds to the more intense fields that a hearing aid equipped user of a WD would experience. This standard assesses the near-field or user condition.<br />\n
              This standard describes preferred test methods and test facilities and, in some cases, alternative test methods and facilities. If alternative test methods or facilities are employed, every effort shall be made to establish correlation with the preferred ones. Any deviation from the preferred test methods, as set forth in this standard, shall be fully described in the test report.<br />\n
              Wherever the word shall is used in this standard, it indicates something mandatory. The word should indicates something that is advisory. The word may indicates an option, which is at the discretion of the test engineer.
              """
            #metaKeywords: null
            #metaDescription: null
            #shortDescription: "American National Standard Methods of Measurement for Hearing Aid Compatibility with Wireless Communications"
            -notes: "Superseded"
          }
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