Extron Electronics MLC 104 Plus Series - Manual (Page 103)

4-39 MLC 104 Plus Series • SIS Programming and Control
PRELIMINAR
Y
Command/response table for special function SIS commands, continued
Command ASCII
Command
(host to MLC)
Response
(MLC to host)
X? values
and additional descriptions
Miscellaneous settings
Enable auxiliary switcher use
(switcher slaving) X?
*41# Slave*
X?]
For
X?
,
0 = disable control of an optional
Extron MLS/PVS switcher,
1 = enable (default) MLS/PVS
auxiliary switcher control.
Volume knob mode 24 X?
*46# VolMode*
X?]
For
X?
,
0 = discrete volume values
(default),
1 = continuous increment/
decrement.
Max. volume range 24 X?
*47# VolMax*
X?] For maximum volume,
X?
is 1 to 100.
100 = default.
N Maximum volume range cannot be changed while an Extron switcher is detected at the MLC’s MLS switcher port.
N When the maximum volume is changed, the volume level and the volume limit during display power‑up (11#) are set
to 25% of the new maximum volume setting.
Volume encoder scale 24 X? *49# EncScale* X?] For X? :
0 = no scaling (default) (the
volume encoder works at full
speed.),
1 = decrease encoder speed by 2,
2 = decrease encoder speed by 3,
...,
255 = decrease encoder speed
by 256.
N Use this command to slow down how fast the volume changes while you turn the Volume knob or press a volume
button on the remote control. The lower the encoder speed, the more turns or button presses it takes to change the
volume by the same amount.
The value entered is the encoder speed scaling factor. A value of 1 scales the speed down by a factor of 2 (the MLC
issues commands at 1/2 speed), a value of 2 scales by a factor of 3 (the MLC issues volume commands 1/3 speed), and
so forth.
This feature addresses a scenario that occurs with some projectors that use range type volume control. When the
MLC’s knob controls projector volume, sometimes the MLC sends the volume commands faster than the projector can
detect and process them. The projector does not detect some of the volume change commands, resulting in a choppy
volume ramp.
Encoder scaling gives the programmer the ability to slow the knob down to a speed the projector can handle. The
drawback is that users must turns the knob more times to change from minimum to maximum volume. It is up to the
user to find a balance between smooth audio ramping and the number of knob turns needed to cover the volume range.
This requires trial and error for each projector exhibiting this problem.
Although this feature is mainly for range type volume control, it applies to any range type command programmed to be
executed by the volume knob.
Front panel lockout
Lock out input selection during
power-on/power off
24
X?
* 53# PwrLock*
X?]
For
X?
:
0 = off,
1 = on (default).
N This command applies only to input selection buttons that are controlled by firmware and designated for input
switching (input buttons that are set for input button mode via Global Configurator).