Control - Digital Input; Control - Relay; Control - Volume Control - Extron electronics MLC Plus 100 Series Setup Manual
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Also See for MLC Plus 100 Series:
- User manual (59 pages) ,
- Setup manual (13 pages) ,
- Quick reference (2 pages)
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Control — digital input
Rear
Panel
Con gure the port with or without
+5 VDC pull-up.
Use this port to:
• Monitor or trigger events and
V
C
G
IN
G
1
2
C
functions (toggle relays, issue
VOL
D IN
RELAYS
commands, send e-mail), once
con gured.
• Power an LED or other device
that accepts a TTL signal.
Switch, Sensor, LED,
Relay, or Similar Item)
Control — volume control
Reference
voltage: ≤10 VDC
V
C
G
MLC Plus
Control voltage output:
Rear Panel
0 - 10 VDC
S
G
V
C
G
G
IN
IR
VOL
D IN
G
Ground (Gnd)
C
Control voltage (variable output to amp from MLC Plus) – This signal controls the amp volume.
V
Reference voltage input (from ampli er) – This allows the MLC Plus to detect when the amp is present.
Example:
Connecting to
Extron Amplifiers
MLC Plus
Rear Panel
V
C
G
VOL
G
Ground
C
Control voltage
V
Reference voltage
Digital Input
This port can be used to control the volume and mute or unmute the audio for some
Extron audio ampli ers with remote volume capability.
• Connect to an Extron audio ampi er to
permit volume control via the
MLC
Plus
.
Settings to configure via software:
• Maximum and minimum voltage
limits
XPA 1002
MPA 401 Series
MPA 152 Plus
REMOTE
10V
50mA
10V
50mA
G
V
C
G
V
C
G
V
C
G
10V
50mA
Control — relay
All relays are
normally open.
Rear
Panel
IN
G
1
2
C
D IN
RELAYS
To Room
Control
Equipment
Volume Control
• Do not exceed 25 VDC input voltage.
• Soft Start mode: off or on (default) − to allow
volume to gradually increase from mute to
the previous level after muting or power-on
to prevent loud audio bursts
NOTE:
Use shielded cable
and place the MLC Plus as
close as possible to the
ampli er to avoid picking up
background noise via the
cable.
MPA 181T,
MPA 152
NOTE:
MP 101 Series
mute is active, the
MLC Plus sets
REMOTE
REMOTE
control voltage output
to 0 VDC, even if the
10V
voltage range
VOL/MUTE
VOL/MUTE
10V
50mA
(minimum and
maximum voltage
C or VOL/MUTE
V or 10V
G or
limits) have been set
to levels above zero,
such as 2 V to 8 V.
Relays
• Connect devices for relay control.
• Do not exceed a total of 24 V, 1 A
for each port.
Normally
Closed
Open
When audio
7
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