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 {#113788
  -cart: App\Entity\Order\Order {#13364 …}
  -cartItem: App\Entity\Order\OrderItem {#113776
    #id: null
    #order: null
    #quantity: 1
    #unitPrice: 0
    #originalUnitPrice: 0
    #total: 0
    #immutable: false
    #units: Doctrine\Common\Collections\ArrayCollection {#113800 …}
    #unitsTotal: 0
    #adjustments: Doctrine\Common\Collections\ArrayCollection {#113801 …}
    #adjustmentsTotal: 0
    #version: 1
    #variant: App\Entity\Product\ProductVariant {#8103
      #id: 8459
      #code: "IEEE00010204PDF"
      #product: App\Entity\Product\Product {#7310
        #id: 12574
        #code: "IEEE00010204"
        #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 {#215097 …}
          -isDirty: false
        }
        #associations: Doctrine\ORM\PersistentCollection {#7899 …}
        #createdAt: DateTime @1751040521 {#7274
          date: 2025-06-27 18:08:41.0 Europe/Paris (+02:00)
        }
        #updatedAt: DateTime @1754608642 {#7322
          date: 2025-08-08 01:17:22.0 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: 45305
            #name: "IEEE 1308:2023"
            #slug: "ieee-1308-2023-ieee00010204-244229"
            #description: """
              Revision Standard - Active.<br />\n
              Specifications that should be provided to characterize instrumentation used to measure the steady state root mean square (rms) value of magnetic and electric fields with sinusoidal frequency content in the range 10 Hz to 3 kHz are identified. The instrumentation, recommended calibration methods, and sources of measurement uncertainty are also described.<br />\n
              \t\t\t\t<br />\n
              This recommended practice identifies specifications that should be provided to characterize instrumentation used to measure the steady state Root mean square (rms) values of magnetic and electric fields with sinusoidal frequency content in the range 10 Hz to 3 kHz in residential and occupational settings as well as in transportation systems. The dynamic ranges of interest are 0.01 MicroT (0.1 mG) to 10 mT (100 G) and 1 V/m to 30 kV/m for magnetic and electric fields, respectively. In addition, this recommended practice -- Defines terminology. --Describes general characteristics of fields. --Surveys operational principles of instrumentation. -- Indicates methods of calibration. -- Identifies significant sources of error. While field meter specifications are identified, frequencies and field levels that should be used for calibration purposes, and limits on measurement uncertainty are not recommended in this standard. Rather, it is left to standards that describe measurement protocols for different environments to indicate specific calibration points and uncertainty requirements. However, sources of uncertainty during calibration and measurements are identified and guidance is provided on how they should be combined to determine total measurement uncertainty.<br />\n
              The interest in characterizing quasi-static magnetic and electric fields in a number of environments has led to the development and marketing of many field meters with a range of specifications. Sources of quasi-static fields include devices that operate at power frequencies and produce power frequency and power frequency harmonic fields, as well as devices that produce fields that are independent of the power frequency. Because of differences in the characteristics of the fields from sources in the various environments, for example, frequency content, polarization, nonuniformity, and magnitude, the instrumentation requirements for measurements in the various environments will differ. While a variety of instrumentation exists to characterize these parameters, this recommended practice only pertains to the instrumentation to the extent that they measure the rms levels of the magnetic and electric fields.
              """
            #metaKeywords: null
            #metaDescription: null
            #shortDescription: "IEEE Recommended Practice for Instrumentation: Specifications for Magnetic Flux Density and Electric Field Strength Meters—10 Hz to 3 kHz"
            -notes: "Active"
          }
        ]
        #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 @1698012000 {#7292
          date: 2023-10-23 00:00:00.0 Europe/Paris (+02:00)
        }
        -author: ""
        -publishedAt: DateTime @1696543200 {#7318
          date: 2023-10-06 00:00:00.0 Europe/Paris (+02:00)
        }
        -releasedAt: null
        -confirmedAt: null
        -canceledAt: null
        -edition: null
        -coreDocument: "1308"
        -bookCollection: ""
        -pageCount: 51
        -documents: Doctrine\ORM\PersistentCollection {#7464 …}
        -favorites: Doctrine\ORM\PersistentCollection {#7499 …}
      }
      #optionValues: Doctrine\ORM\PersistentCollection {#8319 …}
      #position: 0
      #createdAt: DateTime @1751041364 {#7283
        date: 2025-06-27 18:22:44.0 Europe/Paris (+02:00)
      }
      #updatedAt: DateTime @1755612046 {#8120
        date: 2025-08-19 16:00:46.0 Europe/Paris (+02:00)
      }
      #enabled: true
      #translations: Doctrine\ORM\PersistentCollection {#8263 …}
      #translationsCache: [
        "en_US" => App\Entity\Product\ProductVariantTranslation {#93368
          #locale: "en_US"
          #translatable: App\Entity\Product\ProductVariant {#8103}
          #id: 8540
          #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: "978-1-5044-9955-2"
      -ean: "9781504499552"
      -numberOfUsers: 1
      -physicalProduct: false
      -downloadableImmediately: true
      -downloadable: true
      -drmViewerUrl: "https://online-viewer.normadoc.com/aedJmX"
      -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 {#113788
  -cart: App\Entity\Order\Order {#13364 …}
  -cartItem: App\Entity\Order\OrderItem {#113776
    #id: null
    #order: null
    #quantity: 1
    #unitPrice: 0
    #originalUnitPrice: 0
    #total: 0
    #immutable: false
    #units: Doctrine\Common\Collections\ArrayCollection {#113800 …}
    #unitsTotal: 0
    #adjustments: Doctrine\Common\Collections\ArrayCollection {#113801 …}
    #adjustmentsTotal: 0
    #version: 1
    #variant: App\Entity\Product\ProductVariant {#8103
      #id: 8459
      #code: "IEEE00010204PDF"
      #product: App\Entity\Product\Product {#7310
        #id: 12574
        #code: "IEEE00010204"
        #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 {#215097 …}
          -isDirty: false
        }
        #associations: Doctrine\ORM\PersistentCollection {#7899 …}
        #createdAt: DateTime @1751040521 {#7274
          date: 2025-06-27 18:08:41.0 Europe/Paris (+02:00)
        }
        #updatedAt: DateTime @1754608642 {#7322
          date: 2025-08-08 01:17:22.0 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: 45305
            #name: "IEEE 1308:2023"
            #slug: "ieee-1308-2023-ieee00010204-244229"
            #description: """
              Revision Standard - Active.<br />\n
              Specifications that should be provided to characterize instrumentation used to measure the steady state root mean square (rms) value of magnetic and electric fields with sinusoidal frequency content in the range 10 Hz to 3 kHz are identified. The instrumentation, recommended calibration methods, and sources of measurement uncertainty are also described.<br />\n
              \t\t\t\t<br />\n
              This recommended practice identifies specifications that should be provided to characterize instrumentation used to measure the steady state Root mean square (rms) values of magnetic and electric fields with sinusoidal frequency content in the range 10 Hz to 3 kHz in residential and occupational settings as well as in transportation systems. The dynamic ranges of interest are 0.01 MicroT (0.1 mG) to 10 mT (100 G) and 1 V/m to 30 kV/m for magnetic and electric fields, respectively. In addition, this recommended practice -- Defines terminology. --Describes general characteristics of fields. --Surveys operational principles of instrumentation. -- Indicates methods of calibration. -- Identifies significant sources of error. While field meter specifications are identified, frequencies and field levels that should be used for calibration purposes, and limits on measurement uncertainty are not recommended in this standard. Rather, it is left to standards that describe measurement protocols for different environments to indicate specific calibration points and uncertainty requirements. However, sources of uncertainty during calibration and measurements are identified and guidance is provided on how they should be combined to determine total measurement uncertainty.<br />\n
              The interest in characterizing quasi-static magnetic and electric fields in a number of environments has led to the development and marketing of many field meters with a range of specifications. Sources of quasi-static fields include devices that operate at power frequencies and produce power frequency and power frequency harmonic fields, as well as devices that produce fields that are independent of the power frequency. Because of differences in the characteristics of the fields from sources in the various environments, for example, frequency content, polarization, nonuniformity, and magnitude, the instrumentation requirements for measurements in the various environments will differ. While a variety of instrumentation exists to characterize these parameters, this recommended practice only pertains to the instrumentation to the extent that they measure the rms levels of the magnetic and electric fields.
              """
            #metaKeywords: null
            #metaDescription: null
            #shortDescription: "IEEE Recommended Practice for Instrumentation: Specifications for Magnetic Flux Density and Electric Field Strength Meters—10 Hz to 3 kHz"
            -notes: "Active"
          }
        ]
        #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 @1698012000 {#7292
          date: 2023-10-23 00:00:00.0 Europe/Paris (+02:00)
        }
        -author: ""
        -publishedAt: DateTime @1696543200 {#7318
          date: 2023-10-06 00:00:00.0 Europe/Paris (+02:00)
        }
        -releasedAt: null
        -confirmedAt: null
        -canceledAt: null
        -edition: null
        -coreDocument: "1308"
        -bookCollection: ""
        -pageCount: 51
        -documents: Doctrine\ORM\PersistentCollection {#7464 …}
        -favorites: Doctrine\ORM\PersistentCollection {#7499 …}
      }
      #optionValues: Doctrine\ORM\PersistentCollection {#8319 …}
      #position: 0
      #createdAt: DateTime @1751041364 {#7283
        date: 2025-06-27 18:22:44.0 Europe/Paris (+02:00)
      }
      #updatedAt: DateTime @1755612046 {#8120
        date: 2025-08-19 16:00:46.0 Europe/Paris (+02:00)
      }
      #enabled: true
      #translations: Doctrine\ORM\PersistentCollection {#8263 …}
      #translationsCache: [
        "en_US" => App\Entity\Product\ProductVariantTranslation {#93368
          #locale: "en_US"
          #translatable: App\Entity\Product\ProductVariant {#8103}
          #id: 8540
          #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: "978-1-5044-9955-2"
      -ean: "9781504499552"
      -numberOfUsers: 1
      -physicalProduct: false
      -downloadableImmediately: true
      -downloadable: true
      -drmViewerUrl: "https://online-viewer.normadoc.com/aedJmX"
      -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: 12574
  #code: "IEEE00010204"
  #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 {#215097 …}
    -isDirty: false
  }
  #associations: Doctrine\ORM\PersistentCollection {#7899 …}
  #createdAt: DateTime @1751040521 {#7274
    date: 2025-06-27 18:08:41.0 Europe/Paris (+02:00)
  }
  #updatedAt: DateTime @1754608642 {#7322
    date: 2025-08-08 01:17:22.0 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: 45305
      #name: "IEEE 1308:2023"
      #slug: "ieee-1308-2023-ieee00010204-244229"
      #description: """
        Revision Standard - Active.<br />\n
        Specifications that should be provided to characterize instrumentation used to measure the steady state root mean square (rms) value of magnetic and electric fields with sinusoidal frequency content in the range 10 Hz to 3 kHz are identified. The instrumentation, recommended calibration methods, and sources of measurement uncertainty are also described.<br />\n
        \t\t\t\t<br />\n
        This recommended practice identifies specifications that should be provided to characterize instrumentation used to measure the steady state Root mean square (rms) values of magnetic and electric fields with sinusoidal frequency content in the range 10 Hz to 3 kHz in residential and occupational settings as well as in transportation systems. The dynamic ranges of interest are 0.01 MicroT (0.1 mG) to 10 mT (100 G) and 1 V/m to 30 kV/m for magnetic and electric fields, respectively. In addition, this recommended practice -- Defines terminology. --Describes general characteristics of fields. --Surveys operational principles of instrumentation. -- Indicates methods of calibration. -- Identifies significant sources of error. While field meter specifications are identified, frequencies and field levels that should be used for calibration purposes, and limits on measurement uncertainty are not recommended in this standard. Rather, it is left to standards that describe measurement protocols for different environments to indicate specific calibration points and uncertainty requirements. However, sources of uncertainty during calibration and measurements are identified and guidance is provided on how they should be combined to determine total measurement uncertainty.<br />\n
        The interest in characterizing quasi-static magnetic and electric fields in a number of environments has led to the development and marketing of many field meters with a range of specifications. Sources of quasi-static fields include devices that operate at power frequencies and produce power frequency and power frequency harmonic fields, as well as devices that produce fields that are independent of the power frequency. Because of differences in the characteristics of the fields from sources in the various environments, for example, frequency content, polarization, nonuniformity, and magnitude, the instrumentation requirements for measurements in the various environments will differ. While a variety of instrumentation exists to characterize these parameters, this recommended practice only pertains to the instrumentation to the extent that they measure the rms levels of the magnetic and electric fields.
        """
      #metaKeywords: null
      #metaDescription: null
      #shortDescription: "IEEE Recommended Practice for Instrumentation: Specifications for Magnetic Flux Density and Electric Field Strength Meters—10 Hz to 3 kHz"
      -notes: "Active"
    }
  ]
  #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 @1698012000 {#7292
    date: 2023-10-23 00:00:00.0 Europe/Paris (+02:00)
  }
  -author: ""
  -publishedAt: DateTime @1696543200 {#7318
    date: 2023-10-06 00:00:00.0 Europe/Paris (+02:00)
  }
  -releasedAt: null
  -confirmedAt: null
  -canceledAt: null
  -edition: null
  -coreDocument: "1308"
  -bookCollection: ""
  -pageCount: 51
  -documents: Doctrine\ORM\PersistentCollection {#7464 …}
  -favorites: Doctrine\ORM\PersistentCollection {#7499 …}
}
same as passed value

Resolved Options

Option Value
action
""
allow_extra_fields
false
allow_file_upload
false
attr
[]
attr_translation_parameters
[]
auto_initialize
true
block_name
null
block_prefix
null
by_reference
true
compound
true
constraints
[]
csrf_field_name
"_token"
csrf_message
"The CSRF token is invalid. Please try to resubmit the form."
csrf_protection
true
csrf_token_id
null
csrf_token_manager
Symfony\Component\Security\Csrf\CsrfTokenManager {#113808
  -generator: Symfony\Component\Security\Csrf\TokenGenerator\UriSafeTokenGenerator {#113809 …}
  -storage: Symfony\Component\Security\Csrf\TokenStorage\SessionTokenStorage {#113810 …}
  -namespace: Closure() {#113812 …}
}
data
Sylius\Bundle\OrderBundle\Controller\AddToCartCommand {#113788
  -cart: App\Entity\Order\Order {#13364 …}
  -cartItem: App\Entity\Order\OrderItem {#113776
    #id: null
    #order: null
    #quantity: 1
    #unitPrice: 0
    #originalUnitPrice: 0
    #total: 0
    #immutable: false
    #units: Doctrine\Common\Collections\ArrayCollection {#113800 …}
    #unitsTotal: 0
    #adjustments: Doctrine\Common\Collections\ArrayCollection {#113801 …}
    #adjustmentsTotal: 0
    #version: 1
    #variant: App\Entity\Product\ProductVariant {#8103
      #id: 8459
      #code: "IEEE00010204PDF"
      #product: App\Entity\Product\Product {#7310
        #id: 12574
        #code: "IEEE00010204"
        #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 {#215097 …}
          -isDirty: false
        }
        #associations: Doctrine\ORM\PersistentCollection {#7899 …}
        #createdAt: DateTime @1751040521 {#7274
          date: 2025-06-27 18:08:41.0 Europe/Paris (+02:00)
        }
        #updatedAt: DateTime @1754608642 {#7322
          date: 2025-08-08 01:17:22.0 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: 45305
            #name: "IEEE 1308:2023"
            #slug: "ieee-1308-2023-ieee00010204-244229"
            #description: """
              Revision Standard - Active.<br />\n
              Specifications that should be provided to characterize instrumentation used to measure the steady state root mean square (rms) value of magnetic and electric fields with sinusoidal frequency content in the range 10 Hz to 3 kHz are identified. The instrumentation, recommended calibration methods, and sources of measurement uncertainty are also described.<br />\n
              \t\t\t\t<br />\n
              This recommended practice identifies specifications that should be provided to characterize instrumentation used to measure the steady state Root mean square (rms) values of magnetic and electric fields with sinusoidal frequency content in the range 10 Hz to 3 kHz in residential and occupational settings as well as in transportation systems. The dynamic ranges of interest are 0.01 MicroT (0.1 mG) to 10 mT (100 G) and 1 V/m to 30 kV/m for magnetic and electric fields, respectively. In addition, this recommended practice -- Defines terminology. --Describes general characteristics of fields. --Surveys operational principles of instrumentation. -- Indicates methods of calibration. -- Identifies significant sources of error. While field meter specifications are identified, frequencies and field levels that should be used for calibration purposes, and limits on measurement uncertainty are not recommended in this standard. Rather, it is left to standards that describe measurement protocols for different environments to indicate specific calibration points and uncertainty requirements. However, sources of uncertainty during calibration and measurements are identified and guidance is provided on how they should be combined to determine total measurement uncertainty.<br />\n
              The interest in characterizing quasi-static magnetic and electric fields in a number of environments has led to the development and marketing of many field meters with a range of specifications. Sources of quasi-static fields include devices that operate at power frequencies and produce power frequency and power frequency harmonic fields, as well as devices that produce fields that are independent of the power frequency. Because of differences in the characteristics of the fields from sources in the various environments, for example, frequency content, polarization, nonuniformity, and magnitude, the instrumentation requirements for measurements in the various environments will differ. While a variety of instrumentation exists to characterize these parameters, this recommended practice only pertains to the instrumentation to the extent that they measure the rms levels of the magnetic and electric fields.
              """
            #metaKeywords: null
            #metaDescription: null
            #shortDescription: "IEEE Recommended Practice for Instrumentation: Specifications for Magnetic Flux Density and Electric Field Strength Meters—10 Hz to 3 kHz"
            -notes: "Active"
          }
        ]
        #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 @1698012000 {#7292
          date: 2023-10-23 00:00:00.0 Europe/Paris (+02:00)
        }
        -author: ""
        -publishedAt: DateTime @1696543200 {#7318
          date: 2023-10-06 00:00:00.0 Europe/Paris (+02:00)
        }
        -releasedAt: null
        -confirmedAt: null
        -canceledAt: null
        -edition: null
        -coreDocument: "1308"
        -bookCollection: ""
        -pageCount: 51
        -documents: Doctrine\ORM\PersistentCollection {#7464 …}
        -favorites: Doctrine\ORM\PersistentCollection {#7499 …}
      }
      #optionValues: Doctrine\ORM\PersistentCollection {#8319 …}
      #position: 0
      #createdAt: DateTime @1751041364 {#7283
        date: 2025-06-27 18:22:44.0 Europe/Paris (+02:00)
      }
      #updatedAt: DateTime @1755612046 {#8120
        date: 2025-08-19 16:00:46.0 Europe/Paris (+02:00)
      }
      #enabled: true
      #translations: Doctrine\ORM\PersistentCollection {#8263 …}
      #translationsCache: [
        "en_US" => App\Entity\Product\ProductVariantTranslation {#93368
          #locale: "en_US"
          #translatable: App\Entity\Product\ProductVariant {#8103}
          #id: 8540
          #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: "978-1-5044-9955-2"
      -ean: "9781504499552"
      -numberOfUsers: 1
      -physicalProduct: false
      -downloadableImmediately: true
      -downloadable: true
      -drmViewerUrl: "https://online-viewer.normadoc.com/aedJmX"
      -sellable: true
      -documents: Doctrine\ORM\PersistentCollection {#8131 …}
      -drmTokens: Doctrine\ORM\PersistentCollection {#8123 …}
      -enabledForSubscribers: true
      -currentAreaContext: null
    }
    #productName: null
    #variantName: null
  }
}
data_class
"Sylius\Bundle\OrderBundle\Controller\AddToCartCommand"
disabled
false
empty_data
Closure(FormInterface $form) {#113835
  class: "Symfony\Component\Form\Extension\Core\Type\FormType"
  use: {
    $class: "Sylius\Bundle\OrderBundle\Controller\AddToCartCommand"
  }
}
error_bubbling
true
error_mapping
[]
extra_fields_message
"This form should not contain extra fields."
form_attr
false
getter
null
help
null
help_attr
[]
help_html
false
help_translation_parameters
[]
inherit_data
false
invalid_message
"This value is not valid."
invalid_message_parameters
[]
is_empty_callback
null
label
null
label_attr
[]
label_format
null
label_html
false
label_translation_parameters
[]
mapped
true
method
"POST"
post_max_size_message
"The uploaded file was too large. Please try to upload a smaller file."
priority
0
product
App\Entity\Product\Product {#7310
  #id: 12574
  #code: "IEEE00010204"
  #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 {#215097 …}
    -isDirty: false
  }
  #associations: Doctrine\ORM\PersistentCollection {#7899 …}
  #createdAt: DateTime @1751040521 {#7274
    date: 2025-06-27 18:08:41.0 Europe/Paris (+02:00)
  }
  #updatedAt: DateTime @1754608642 {#7322
    date: 2025-08-08 01:17:22.0 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: 45305
      #name: "IEEE 1308:2023"
      #slug: "ieee-1308-2023-ieee00010204-244229"
      #description: """
        Revision Standard - Active.<br />\n
        Specifications that should be provided to characterize instrumentation used to measure the steady state root mean square (rms) value of magnetic and electric fields with sinusoidal frequency content in the range 10 Hz to 3 kHz are identified. The instrumentation, recommended calibration methods, and sources of measurement uncertainty are also described.<br />\n
        \t\t\t\t<br />\n
        This recommended practice identifies specifications that should be provided to characterize instrumentation used to measure the steady state Root mean square (rms) values of magnetic and electric fields with sinusoidal frequency content in the range 10 Hz to 3 kHz in residential and occupational settings as well as in transportation systems. The dynamic ranges of interest are 0.01 MicroT (0.1 mG) to 10 mT (100 G) and 1 V/m to 30 kV/m for magnetic and electric fields, respectively. In addition, this recommended practice -- Defines terminology. --Describes general characteristics of fields. --Surveys operational principles of instrumentation. -- Indicates methods of calibration. -- Identifies significant sources of error. While field meter specifications are identified, frequencies and field levels that should be used for calibration purposes, and limits on measurement uncertainty are not recommended in this standard. Rather, it is left to standards that describe measurement protocols for different environments to indicate specific calibration points and uncertainty requirements. However, sources of uncertainty during calibration and measurements are identified and guidance is provided on how they should be combined to determine total measurement uncertainty.<br />\n
        The interest in characterizing quasi-static magnetic and electric fields in a number of environments has led to the development and marketing of many field meters with a range of specifications. Sources of quasi-static fields include devices that operate at power frequencies and produce power frequency and power frequency harmonic fields, as well as devices that produce fields that are independent of the power frequency. Because of differences in the characteristics of the fields from sources in the various environments, for example, frequency content, polarization, nonuniformity, and magnitude, the instrumentation requirements for measurements in the various environments will differ. While a variety of instrumentation exists to characterize these parameters, this recommended practice only pertains to the instrumentation to the extent that they measure the rms levels of the magnetic and electric fields.
        """
      #metaKeywords: null
      #metaDescription: null
      #shortDescription: "IEEE Recommended Practice for Instrumentation: Specifications for Magnetic Flux Density and Electric Field Strength Meters—10 Hz to 3 kHz"
      -notes: "Active"
    }
  ]
  #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 @1698012000 {#7292
    date: 2023-10-23 00:00:00.0 Europe/Paris (+02:00)
  }
  -author: ""
  -publishedAt: DateTime @1696543200 {#7318
    date: 2023-10-06 00:00:00.0 Europe/Paris (+02:00)
  }
  -releasedAt: null
  -confirmedAt: null
  -canceledAt: null
  -edition: null
  -coreDocument: "1308"
  -bookCollection: ""
  -pageCount: 51
  -documents: Doctrine\ORM\PersistentCollection {#7464 …}
  -favorites: Doctrine\ORM\PersistentCollection {#7499 …}
}
property_path
null
required
true
row_attr
[]
setter
null
translation_domain
null
trim
true
upload_max_size_message
Closure() {#113837
  class: "Symfony\Component\Form\Extension\Validator\Type\UploadValidatorExtension"
  use: {
    $translator: Symfony\Component\Translation\DataCollectorTranslator {#2251 …}
    $message: Closure() {#113836 …}
    $translationDomain: "validators"
  }
}
validation_groups
[
  "sylius"
]

View Vars

Variable Value
action
""
attr
[]
attr_translation_parameters
[]
block_prefixes
[
  "form"
  "sylius_add_to_cart"
  "_sylius_add_to_cart"
]
cache_key
"_sylius_add_to_cart_sylius_add_to_cart"
compound
true
data
Sylius\Bundle\OrderBundle\Controller\AddToCartCommand {#113788
  -cart: App\Entity\Order\Order {#13364 …}
  -cartItem: App\Entity\Order\OrderItem {#113776
    #id: null
    #order: null
    #quantity: 1
    #unitPrice: 0
    #originalUnitPrice: 0
    #total: 0
    #immutable: false
    #units: Doctrine\Common\Collections\ArrayCollection {#113800 …}
    #unitsTotal: 0
    #adjustments: Doctrine\Common\Collections\ArrayCollection {#113801 …}
    #adjustmentsTotal: 0
    #version: 1
    #variant: App\Entity\Product\ProductVariant {#8103
      #id: 8459
      #code: "IEEE00010204PDF"
      #product: App\Entity\Product\Product {#7310
        #id: 12574
        #code: "IEEE00010204"
        #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 {#215097 …}
          -isDirty: false
        }
        #associations: Doctrine\ORM\PersistentCollection {#7899 …}
        #createdAt: DateTime @1751040521 {#7274
          date: 2025-06-27 18:08:41.0 Europe/Paris (+02:00)
        }
        #updatedAt: DateTime @1754608642 {#7322
          date: 2025-08-08 01:17:22.0 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: 45305
            #name: "IEEE 1308:2023"
            #slug: "ieee-1308-2023-ieee00010204-244229"
            #description: """
              Revision Standard - Active.<br />\n
              Specifications that should be provided to characterize instrumentation used to measure the steady state root mean square (rms) value of magnetic and electric fields with sinusoidal frequency content in the range 10 Hz to 3 kHz are identified. The instrumentation, recommended calibration methods, and sources of measurement uncertainty are also described.<br />\n
              \t\t\t\t<br />\n
              This recommended practice identifies specifications that should be provided to characterize instrumentation used to measure the steady state Root mean square (rms) values of magnetic and electric fields with sinusoidal frequency content in the range 10 Hz to 3 kHz in residential and occupational settings as well as in transportation systems. The dynamic ranges of interest are 0.01 MicroT (0.1 mG) to 10 mT (100 G) and 1 V/m to 30 kV/m for magnetic and electric fields, respectively. In addition, this recommended practice -- Defines terminology. --Describes general characteristics of fields. --Surveys operational principles of instrumentation. -- Indicates methods of calibration. -- Identifies significant sources of error. While field meter specifications are identified, frequencies and field levels that should be used for calibration purposes, and limits on measurement uncertainty are not recommended in this standard. Rather, it is left to standards that describe measurement protocols for different environments to indicate specific calibration points and uncertainty requirements. However, sources of uncertainty during calibration and measurements are identified and guidance is provided on how they should be combined to determine total measurement uncertainty.<br />\n
              The interest in characterizing quasi-static magnetic and electric fields in a number of environments has led to the development and marketing of many field meters with a range of specifications. Sources of quasi-static fields include devices that operate at power frequencies and produce power frequency and power frequency harmonic fields, as well as devices that produce fields that are independent of the power frequency. Because of differences in the characteristics of the fields from sources in the various environments, for example, frequency content, polarization, nonuniformity, and magnitude, the instrumentation requirements for measurements in the various environments will differ. While a variety of instrumentation exists to characterize these parameters, this recommended practice only pertains to the instrumentation to the extent that they measure the rms levels of the magnetic and electric fields.
              """
            #metaKeywords: null
            #metaDescription: null
            #shortDescription: "IEEE Recommended Practice for Instrumentation: Specifications for Magnetic Flux Density and Electric Field Strength Meters—10 Hz to 3 kHz"
            -notes: "Active"
          }
        ]
        #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 @1698012000 {#7292
          date: 2023-10-23 00:00:00.0 Europe/Paris (+02:00)
        }
        -author: ""
        -publishedAt: DateTime @1696543200 {#7318
          date: 2023-10-06 00:00:00.0 Europe/Paris (+02:00)
        }
        -releasedAt: null
        -confirmedAt: null
        -canceledAt: null
        -edition: null
        -coreDocument: "1308"
        -bookCollection: ""
        -pageCount: 51
        -documents: Doctrine\ORM\PersistentCollection {#7464 …}
        -favorites: Doctrine\ORM\PersistentCollection {#7499 …}
      }
      #optionValues: Doctrine\ORM\PersistentCollection {#8319 …}
      #position: 0
      #createdAt: DateTime @1751041364 {#7283
        date: 2025-06-27 18:22:44.0 Europe/Paris (+02:00)
      }
      #updatedAt: DateTime @1755612046 {#8120
        date: 2025-08-19 16:00:46.0 Europe/Paris (+02:00)
      }
      #enabled: true
      #translations: Doctrine\ORM\PersistentCollection {#8263 …}
      #translationsCache: [
        "en_US" => App\Entity\Product\ProductVariantTranslation {#93368
          #locale: "en_US"
          #translatable: App\Entity\Product\ProductVariant {#8103}
          #id: 8540
          #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: "978-1-5044-9955-2"
      -ean: "9781504499552"
      -numberOfUsers: 1
      -physicalProduct: false
      -downloadableImmediately: true
      -downloadable: true
      -drmViewerUrl: "https://online-viewer.normadoc.com/aedJmX"
      -sellable: true
      -documents: Doctrine\ORM\PersistentCollection {#8131 …}
      -drmTokens: Doctrine\ORM\PersistentCollection {#8123 …}
      -enabledForSubscribers: true
      -currentAreaContext: null
    }
    #productName: null
    #variantName: null
  }
}
disabled
false
errors
Symfony\Component\Form\FormErrorIterator {#113862
  -form: Symfony\Component\Form\Form {#113867 …}
  -errors: []
}
form
Symfony\Component\Form\FormView {#113838 …5}
full_name
"sylius_add_to_cart"
help
null
help_attr
[]
help_html
false
help_translation_parameters
[]
id
"sylius_add_to_cart"
label
null
label_attr
[]
label_format
null
label_html
false
label_translation_parameters
[]
method
"POST"
multipart
false
name
"sylius_add_to_cart"
priority
0
required
true
row_attr
[]
submitted
false
translation_domain
null
unique_block_prefix
"_sylius_add_to_cart"
valid
true
value
Sylius\Bundle\OrderBundle\Controller\AddToCartCommand {#113788
  -cart: App\Entity\Order\Order {#13364 …}
  -cartItem: App\Entity\Order\OrderItem {#113776
    #id: null
    #order: null
    #quantity: 1
    #unitPrice: 0
    #originalUnitPrice: 0
    #total: 0
    #immutable: false
    #units: Doctrine\Common\Collections\ArrayCollection {#113800 …}
    #unitsTotal: 0
    #adjustments: Doctrine\Common\Collections\ArrayCollection {#113801 …}
    #adjustmentsTotal: 0
    #version: 1
    #variant: App\Entity\Product\ProductVariant {#8103
      #id: 8459
      #code: "IEEE00010204PDF"
      #product: App\Entity\Product\Product {#7310
        #id: 12574
        #code: "IEEE00010204"
        #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 {#215097 …}
          -isDirty: false
        }
        #associations: Doctrine\ORM\PersistentCollection {#7899 …}
        #createdAt: DateTime @1751040521 {#7274
          date: 2025-06-27 18:08:41.0 Europe/Paris (+02:00)
        }
        #updatedAt: DateTime @1754608642 {#7322
          date: 2025-08-08 01:17:22.0 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: 45305
            #name: "IEEE 1308:2023"
            #slug: "ieee-1308-2023-ieee00010204-244229"
            #description: """
              Revision Standard - Active.<br />\n
              Specifications that should be provided to characterize instrumentation used to measure the steady state root mean square (rms) value of magnetic and electric fields with sinusoidal frequency content in the range 10 Hz to 3 kHz are identified. The instrumentation, recommended calibration methods, and sources of measurement uncertainty are also described.<br />\n
              \t\t\t\t<br />\n
              This recommended practice identifies specifications that should be provided to characterize instrumentation used to measure the steady state Root mean square (rms) values of magnetic and electric fields with sinusoidal frequency content in the range 10 Hz to 3 kHz in residential and occupational settings as well as in transportation systems. The dynamic ranges of interest are 0.01 MicroT (0.1 mG) to 10 mT (100 G) and 1 V/m to 30 kV/m for magnetic and electric fields, respectively. In addition, this recommended practice -- Defines terminology. --Describes general characteristics of fields. --Surveys operational principles of instrumentation. -- Indicates methods of calibration. -- Identifies significant sources of error. While field meter specifications are identified, frequencies and field levels that should be used for calibration purposes, and limits on measurement uncertainty are not recommended in this standard. Rather, it is left to standards that describe measurement protocols for different environments to indicate specific calibration points and uncertainty requirements. However, sources of uncertainty during calibration and measurements are identified and guidance is provided on how they should be combined to determine total measurement uncertainty.<br />\n
              The interest in characterizing quasi-static magnetic and electric fields in a number of environments has led to the development and marketing of many field meters with a range of specifications. Sources of quasi-static fields include devices that operate at power frequencies and produce power frequency and power frequency harmonic fields, as well as devices that produce fields that are independent of the power frequency. Because of differences in the characteristics of the fields from sources in the various environments, for example, frequency content, polarization, nonuniformity, and magnitude, the instrumentation requirements for measurements in the various environments will differ. While a variety of instrumentation exists to characterize these parameters, this recommended practice only pertains to the instrumentation to the extent that they measure the rms levels of the magnetic and electric fields.
              """
            #metaKeywords: null
            #metaDescription: null
            #shortDescription: "IEEE Recommended Practice for Instrumentation: Specifications for Magnetic Flux Density and Electric Field Strength Meters—10 Hz to 3 kHz"
            -notes: "Active"
          }
        ]
        #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 @1698012000 {#7292
          date: 2023-10-23 00:00:00.0 Europe/Paris (+02:00)
        }
        -author: ""
        -publishedAt: DateTime @1696543200 {#7318
          date: 2023-10-06 00:00:00.0 Europe/Paris (+02:00)
        }
        -releasedAt: null
        -confirmedAt: null
        -canceledAt: null
        -edition: null
        -coreDocument: "1308"
        -bookCollection: ""
        -pageCount: 51
        -documents: Doctrine\ORM\PersistentCollection {#7464 …}
        -favorites: Doctrine\ORM\PersistentCollection {#7499 …}
      }
      #optionValues: Doctrine\ORM\PersistentCollection {#8319 …}
      #position: 0
      #createdAt: DateTime @1751041364 {#7283
        date: 2025-06-27 18:22:44.0 Europe/Paris (+02:00)
      }
      #updatedAt: DateTime @1755612046 {#8120
        date: 2025-08-19 16:00:46.0 Europe/Paris (+02:00)
      }
      #enabled: true
      #translations: Doctrine\ORM\PersistentCollection {#8263 …}
      #translationsCache: [
        "en_US" => App\Entity\Product\ProductVariantTranslation {#93368
          #locale: "en_US"
          #translatable: App\Entity\Product\ProductVariant {#8103}
          #id: 8540
          #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: "978-1-5044-9955-2"
      -ean: "9781504499552"
      -numberOfUsers: 1
      -physicalProduct: false
      -downloadableImmediately: true
      -downloadable: true
      -drmViewerUrl: "https://online-viewer.normadoc.com/aedJmX"
      -sellable: true
      -documents: Doctrine\ORM\PersistentCollection {#8131 …}
      -drmTokens: Doctrine\ORM\PersistentCollection {#8123 …}
      -enabledForSubscribers: true
      -currentAreaContext: null
    }
    #productName: null
    #variantName: null
  }
}