Extron Electronics MLC 104 Plus Series - Manual (Page 53)

3-13 MLC 104 Plus Series • Software-based Configuration and Control
PRELIMINAR
Y
power off/power down command twice. The MLC must be configured to
send the IR power off command upon display power off button release (not at
the button press).
Send channel IR/232 as display powers up — This setting ensures that the
inputs of the MLC and of the display device are coordinated when the display is
powered on.
Lockout I/O switching while display powers On or Off — This feature prevents
input switching during the display power up and power down periods. This
I/O switching lockout is the same as SIS special command 53# ( page 4-33 ). For
this command to work you must also set the power up and power down delay
periods (mentioned above).
Hold power-down button for two seconds — This prevents shutting down the
display or projector by accidentally pressing the Display Off button. When this
feature is enabled, you must press and hold the front panel Display Off button
for two seconds before the power-off sequences can start. The corresponding SIS
command is 22#.
Volume settings
When adjusting the volume use — For a projector, display, or audio output
device, volume is controlled by one of two methods: selecting a setting within
a specific range of values, or sending a simple command to increase or decrease
the volume by a fixed increment. Refer to the user’s manual for the display or
audio device to choose the best method for volume adjustment.
N The power‑up volume limit is limited by the maximum volume setting (SIS
special command 47#). If the maximum volume (47# command) is set, the limit
audio level feature (SIS special command 11#) is automatically set to 25% of
the maximum volume (47#).
See pages 4‑33 and 4‑39 .
Volume encoder scaling factor (0-255) — This feature allows you to slow
down the volume knob (the encoder) on the MLC’s front panel. 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 is able to detect
and process. When the projector does not detect some of the volume change
commands, a choppy volume ramp occurs.
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. The
SIS special command 49# sets the encoder scaling factor.
Miscellaneous settings
Reset button statistics on upload — For more information on button statistics
(which track how many times each front panel button is pressed), see
“ Statistics ” on page 3-17.
Upload enhanced web pages — See “ Control ” on page 3-21 to see examples of
both basic and enhanced Web pages (which show photo-like versions of the
MLC’s and control modules’ front panels).
Enable/Disable IR Receiver determine’s the MLC’s ability to receive IR signals
through the CM/IR/SCP port on the side panel. This feature is the same as the
65# SIS command ( page 4-40 ).