AMX NetLinx NXM Series - Manual (Page 51)

NXC-VOL4 Volume Control Card
45 NetLinx Cardframe, Control Cards, and NetModules
Programming Information
These NetLinx Send_Commands control the NXC-VOL4.
NXC-VOL4 Send_Commands
Command Description
PL
Ramps specified (audio)
channel(s) from current level
to a specified preset level or
percentage at the current rate
or optionally in a specified
amount of time. Syntax:
SEND_COMMAND <DEV>,'P<Output Channel>L<Level>[T<Time>]'
Variables:
Output Channel: Target audio channel number (0-2). Output channel 0
means both channels 1 and 2.
Level: Target level (0-255 or 0-100%). Level 0 is lowest volume (same as
mute) and 255 (or 100%) is maximum volume.
Time: Specifies the amount of time (in .10-second increments) that it takes to
ramp the specified audio channel to the specified level.
Example:
SEND_COMMAND MYDEVICE,'P0L50%'
Ramps both audio channels on MYDEVICE to 50% volume at the current ramp
rate.
PR
Sets the ramp rate of the
specified channel(s) where
Time is the time to ramp the
full range both down to up
and up to down or optionally
just down to up or just up to
down. If Time is set to 50, it takes 5 seconds to ramp through the full range of 0 to 255
(0-100%). It would take 2.5 seconds to ramp through half of the range and so
on.
Syntax:
SEND_COMMAND <DEV>,'P<Output Channel>R<Time>[U|D]'
Variables:
• Output Channel: Target channel number (0-2). Output channel 0 means both
channels 1 and 2.
• Time: Specifies the amount of time (in .10-second increments) that it would
take to ramp the full range of 0-100% (down to up and up to down or
optionally just down to up or just up to down).
• U|D: Ramps the specified channel(s) from down to up (U) or from up to down
(D).
Example:
SEND_COMMAND MYDEVICE,'P0R50''
Sets ramp rate of audio channels 1 and 2 to five seconds full range from down
to up and up to down.