Polycom SoundStructure C16 Design Manual page 556

Interpretation of the Arguments
The Channel Type entry indicates that this command accepts a virtual channel name as an argument.
The Value Type entry indicates that this command accepts a floating point number to set the fader level to.
The Read/Write Mode entry indicates that the fader value can be set with the action set and the value can
be retrieved with the action get.
The Phys Chans entry indicates the types of physical channel this command can operate on. The fader
command can operate on most physical input signals include the standard conferencing inputs and outputs
(for example, the analog mic or line inputs on the rear-panel of the C-series products), the sound
reinforcement inputs and outputs (used with the SR12), telephony input and output channels, submix
channels, and the ConferenceLink channels to and from the Polycom Video Codec system.
The Virt Chans entry indicates that the command can operate on both mono and stereo virtual channels.
The System Limits entry indicates the maximum and minimum values for the command. In this example the
fader may be set to any value between -100 and +20 in increments of 0.1 dB.
The Default value entry indicates the value this parameter will have if not set. It will default to 0 dB in this
example.
The User Limits Supported entry indicates whether it is possible to set maximum and minimum values for
the fader to limit the values to only be within those ranges. In this example, the fader command can have a
minimum and maximum fader value associated with it.
The Event Source entry indicates whether you can use the parameter as a source in an Event. In this
example, the fader command can be used as a source in an Event.
Fader Examples
Examples of using the fader commands and their acknowledgments are shown below:
set fader "Amplifier" 1
val fader "Amplifier" 1.0
set fader "Amplifier" 10
val fader "Amplifier" 10.0
set fader max "Amplifier" 10
val fader max "Amplifier" 10.0
set fader min "Amplifier" -20
val fader min "Amplifier" -20.0
get fader "Amplifier"
val fader "Amplifier" 10.0
set fader "Amplifier" -40
val fader "Amplifier" -20.0
In the last example because the fader min was set to -20, trying to set the fader to -40 limited the value to
-20 automatically.
Polycom, Inc. 556