Installation User guide

3-5
MLC 226 IP Series • Operation
PRELIMINARY
If the MLC is confi gured for use with a MediaLink Switcher or for some
projectors, the MLC’s LEDs light to indicate volume ranges (with steadily
lit LEDs) and minimum/maximum volume limits (with fl ashing LEDs), as
shown in the following diagram.
VOLUME VOLUME VOLUME VOLUMEVOLUMEVOLUMEVOLUME
Range-based Volume Adjustment
Minimum,
0% of Max.
Volume
1% to 19%
of Max.
Volume
20% to 39%
of Max.
Volume
40% to 59%
of Max.
Volume
60% to 79%
of Max.
Volume
80% to 99%
of Max.
Volume
100% of
Max.
Volume
If the MLC is confi gured for increment/decrement volume
adjustment, the LEDs scroll up/down briefl y. See the example below.
VOLUME
VOLUME
Increment/Decrement-based Volume Adjustment
IR signal sensors
These sensors allow for IR remote control of the MLC and for IR learning. The
IR remote control must be pointed directly at these devices for best results.
e
IR control receiver — This larger infrared receiver accepts IR signals from the
Extron IR 402 infrared remote control, which mimics the MLC’s front panel
controls.
N
If outside interference
(such as fl uorescent
lighting) affects the
MLC’s functioning, you
may need to disable IR
control. Front panel IR
control can be disabled
using the 65# special
function SIS command.
See page 5-40 for details.
f
IR learning receiver — This
smaller sensor receives and
“learns” commands from
other devices’ infrared
remotes in order to control
the projector or input
devices such as a VCR or
DVD player. IR learning of projector control codes is only necessary if there
are no RS-232 codes available for that projector or if you need to customize
the driver. Refer to the IR Learner help fi le for IR learning procedures. This
receiver accepts infrared signals of from 30 kHz to 62 kHz.
1 2 3
4 5 6
7 8
0
9
MLC 226 IP
4
5
6
CONFIG
IR
LAPTOP
MLC 226 IP
4
5
6
CONFIG
IR
LAPTOP
MLC 226 IP
30 feet
max.
IR 402
IR Learning Control
2"–12"
(4–30 cm)
PC
PC
1 2 3
4 5 6
7 8
0
9
MLC 226 IP
4
5
6
CONFIG
IR
LAPTOP
MLC 226 IP
4
5
6
CONFIG
IR
LAPTOP
MLC 226 IP
30 feet
max.
IR 402
IR Learning Control
2"–12"
(4–30 cm)
PC
PC