Extron Electronics MLC 206 AAP EC User Guide - Manual (Page 53)

4-21 MediaLink Controllers • Serial Communication
to use for asking for the power status (the polling command), the off reference
response (for Off Compare), and the on reference response (for On Compare).
Refer to the control program’s help file for step-by-step programming instructions.
For power polling to be used, you must also select (check) the “Use Projector-
power Polling” box in the Misc. Options part of the Relay & Misc Options
portion of the control program (shown on page 4-22).
If a projector driver does not already exist for your projector, and the projector
requires discrete audio volume commands (for each percent of maximum volume,
for example), as opposed to a pair of volume up/down commands, you can
program those commands in the Volume Table section.
Use the volume table only if you plan to use the display device’s audio inputs.
For the MLC primary mode, select the Volume Table button to access to slider bars
and boxes where you can set volume adjustment step parameters. If you select the
Tools button, a menu (shown in the picture below) appears that provides ways to
make setting up the projector volume table easier.
Follow these procedures to add a new volume table:
1. Set the total number of steps in the Total Steps scrollbar.
2. Follow the step-by-step details provided in the help file to create an RS-232
command string for “step 1” (the first increment of volume change).
3. Click on the Tools button. If most steps for volume increments have similar
RS-232 codes, select “Fill table w/ copies of step 1”. That process copies the
command string you entered in step two into all the subsequent steps.