Zektor Palladia™ 8X8 - Manual (Page 57)

HDA800(V2) Serial Protocol, Version 1.3, 9/12/13 57
Audio Control
The 1st parameter of the VRT command is the ‘ramp time’ setting. This indicate the amount of time
needed to ramp (or fade) from one volume to the next and is given in 1/10th of seconds. The setting of
10 would equal 1 second. This is the value used when 10000 is added to a volume command setting.
The 2nd parameter is the ‘ramp speed’ setting. This is given in 0.5dB steps per second. The setting of
40 would equal a 20dB per second ramp speed. This is the value used when 20000 is added to a vol-
ume command setting.
The VRT command format is:
^VRT time,speed$ Set the ramp time, and ramp speed.
^VRT ?$ Reads current settings.
Response Strings:
^=VRT @ time,speed$
Where:
time = Volume ramp time in 1/10th increments. 1 = 0.1 second, 10 = 1 second, etc.
speed = Volume ramp speed in 0.5dB per second increments. 40 = 20dB per second ramp.
‘VMZ’ Mute a Zone using Volume Control
The VMZ command allows you to mute the volume on the HDA800(V2) using the audio processor.
This differs from the MZ command which is used to completely shut down a zone.
Using the audio processor allows a mute attenuation setting; allowing you to mute a level by a specific
amount, -20dB for instance instead of full audio off.
Also available are mute fade options. Instead of instantly jumping to a mute setting, you can fade over
time, or fade at a given speed, to the new mute level.
The VMZ command is used to mute and unmute a zones. The mute level and fading options are set by
the VMLZ command (See “‘VMLZ’ Set a Zone’s Mute Level” on page 58). The mute fade times are
set using the VMT command (See “‘VMT’ Set Muting (Fade) Times” on page 58).
There are three options when using mute:
0=Unmute - This disables muting, and returns the volume back to its original unmuted level.
1=Mute
- This enables muting. It attenuates the volume by the mute level (See: VMLZ).
2=NoMute - This disables muting, but sets the volume level to the current muted level.
The ‘2’ (NoMute) option allows the mute setting to be cancelled without affecting the volume level.
Response strings for the ‘VZ’ and ‘VPZ’ commands will be sent to indicate the new volume to the
controller. The response string for the ‘VMZ’ command will be a ‘0’ to indicate muting is now dis-
abled. A ‘2’ will never be returned in the response string.
The VMZ command format is:
^VMZ @ zone,@zone,mute$ Mute all channels of a zone or zones.
^VMZ ?$ In polled mode, reads current settings of all logged changes.
^VMZ @ zone,?$ Read current settings of given zones.
Response Strings:
^=VMZ @ zone,mute$
Where:
@ zone = One (or more) zones to be mapped.
mute = Mute setting (0=Unmuted, 1=Muted, 2=NoMute).