HID Usage Tables Document 1.1 - C. Scott Ananian

68 Universal Serial Bus HID Usage TablesLong PlayExtended PlaySlowSel – Selects the VCR’s “LP”" recording speed.Sel – Selects the VCR’s “EP” recording speed.OSC – Enables slow speed transport motion.14.11 Home and Security ControlsFan EnableFan SpeedLight EnableLight IlluminationLevelClimate Control EnableRoom TemperatureSecurity EnableFire AlarmPolice AlarmOOC – Controls the state of a overhead, furnace, or ventilation fan.LC – Adjusts the speed of a overhead, furnace or ventilation fan.OOC – Controls the state of a light or lamp.LC – Adjusts the illumination level of a light or lamp.OOC – Enables or disables a climate control system.LC – Adjusts room temperature level.OOC – Enables or disables a security system.OSC – Initiates a fire alarm.OSC – Initiates a police alarm.14.12 Speaker ChannelsUSB speaker system may employ a hierarchy of Channel collections to identify controls that effectindividual speakers or subsets of speakers. The selection of collections also allows the speakers associatedwith USB audio class spatial locations to be identified.If the only function provided by a device is a speaker system, then it will be defined as a Consumer Controlat the application collection level. The volume, balance, mute, and tone control usages found at the top levelrepresent "Master" controls that effect all channels or speaker systems. If more spatial resolution is requiredthen Channel collections can be contained in the top-level collection.Channel identification assumes the following layout of the speakers.Version 1.1 April 8, 1999