Owner`s manual

zon is zone 1 to 255 (zone-0 not permitted)
vvl is left volume level 0 to 35 (2-dB/increment) (see note 1, 9)
vvr is right volume level 0 to 35 (2-dB/increment) (see note 1, 9)
vol is volume (left and right) 0 to 35 (2-dB/increment) (see note 9)
vpl is left percent volume 0 to 100 (see note 4)
vpr is right percent volume 0 to 100 (see note 4)
vpc is percent volume (left and right) 0 to 100 (see note 4)
bas is bass level 0 to 8 (3-dB/increment) (see note 10)
trb is treble level 0 to 8 (3-dB/increment) (see note 10)
tpr is taper-enable 0=no-taper, 1=taper-volume
sta is audio-state code 0=off, 1=on, 2=on/muted-audio
gbz is group-base-zone 1 to 249; on 8-zone increments (eg: 1, 9, 17... ) (see note 8)
gzd is group-zone-definition 0 to 255 (each bit specifies 1 of 8 zones, starting at gbz) (see note 8)
Volume/Bass/Treble/Mute Notes:
Note 1 – Absolute Left and/or Right Volume (*CW,20), and Absolute Bass and/or Treble (*CW,40) commands:
Volume level parameters vvl and vvr may both be defined, or either may be IGNORE (to only set the one channel)
For IGNORE, set the parameter to 255, or, optionally, insert the ‘X’ character. Either bas or trb may be set to IGNORE.
Note 2 – Tapering with Absolute-Volume and Percent-Volume commands (*CW,20/21/22/23):
If parameter tpr is set to 0, the absolute volume is set immediately. If tpr is set to 1, the level tapers up or down using
the zone’s tud/tdd taper configuration.
Note 3 –Volume-Ramping commands (*CW,35/36/37/64/65/66):
Volume levels are reported only when ramping is stopped (not at each increment).
Note 4 – Percent-Volume commands (*CW,21,22):
For the Percent-Volume commands, a volume percentage (0 to 100) level is used instead of an absolute (0 to 35) level. The
message returned is also in percent, which is handy for updating a readout or bar-graph display, without the need for
additional calculations. Note that the absolute range is more granular (0 to 35) than the percentage (0 to 100) – for this
reason, there will be several percentage steps that resolve to the same absolute volume.
See the Configuration Command section for the *PW,20 command, which is used to program the Percent-Volume-Range.
The factory setting sets the 0-to-100 percent range to operates on the full absolute volume range of -80 to +6 dB (0 to 35), but
you may define a smaller range. For example, the Percent-Volume-Range can be set to -40 to 0 dB (12 to 32) – this example
prevents the lower part of the percentage adjustment from being barely audible, by setting the 0% point at -40 dB, and sets the
100% point at the passthrough level of 0-dB.
Note 5 – Relative-Volume commands (*CW,24/25/26/27/28/29):
When these commands are used, there must be a 180ms minimum delay between successive commands. Otherwise there will
be an “overshoot” effect, due to commands still in the serial buffer (eg: if a “vol-up” button is programmed with a too-short
loop delay, volume will continue to increase somewhat after the button is released).
Note 6 – Mono zone with Left and/or Right Volume commands (*CW,20/21/26/27/28/29):
If a zone is programmed for mono operation, the same source must be routed to both the L&R channels, but these
volume commands allow you to provide independent volume control for two mono areas. You may also apply
relative-up/down control to both L&R as a “master” control of this 2-channel area, while retaining independent “sub-zone”
control over each channel with the individual (L or R) volume commands. This is handy in patios etc.
Lattis Matrix Switcher 32 Software Version 7.3.0.0