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HID Sensor Usage Tables - USB.org

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35 <strong>HID</strong> <strong>Sensor</strong> <strong>Usage</strong>s<br />

Country or Region SV – Indicates country or region represented as an ISO 3166 1alpha-2<br />

country/region code.<br />

Postal Code SV – Indicates the postal code.<br />

1.11 Mechanical <strong>Sensor</strong> Field <strong>Usage</strong>s<br />

These fields are commonly supported by mechanical sensors.<br />

Boolean Switch State SF – Reports the on/off state of a Boolean switch.<br />

Boolean Switch Array<br />

State<br />

SV – Reports the on/off state of each of an array of Boolean<br />

switches.<br />

Multivalue Switch Value SV – Reports the multivalue state of a Multivalue switch.<br />

Force SV – Measures force. Default unit of measure is Newtons; can be<br />

overridden using explicit Unit and/or Unit Exponent.<br />

Absolute Pressure SV – Measures absolute pressure. Default unit of measure is<br />

Pascals; can be overridden using explicit Unit and/or Unit<br />

Exponent.<br />

Gauge Pressure SV – Measures relative gauge pressure. Default unit of measure is<br />

Pascals; can be overridden using explicit Unit and/or Unit<br />

Exponent.<br />

Strain SV – Measures strain (in percent). Can be scaled with a Unit<br />

Exponent.<br />

Weight SV – Measures weight. Default unit of measure is kilograms; can<br />

be overridden using explicit Unit and/or Unit Exponent.<br />

Vibration State DF – The on/off state of a Haptic feedback vibrator.<br />

Forward Vibration Speed DV – The forward speed of the vibrator (in percent). Can be<br />

scaled with a Unit Exponent.<br />

Backward Vibration<br />

Speed<br />

1.12 Motion <strong>Sensor</strong> Field <strong>Usage</strong>s<br />

These fields are commonly supported by motion sensors.<br />

DV – The backward speed of the vibrator (in percent). Can be<br />

scaled with a Unit Exponent. Some haptic motors do not support<br />

both forward and backward motion. For those that do, setting both<br />

forward and backward speeds to non-zero values simultaneously<br />

has a vendor-defined behavior.<br />

Motion State SF – A flag indicating presence or absence of motion.<br />

Motion Intensity SV – A positive number indicating intensity of motion if motion is<br />

detected (in percent), otherwise 0. Can be scaled with a Unit<br />

Exponent.<br />

Acceleration SV – Linear acceleration magnitude without respect to which axis<br />

it occurs in. This is usually used as a composite value for<br />

specifying min, max and accuracy for related accelerations.<br />

Default unit of measure is G’s; can be overridden using explicit

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