Extron Electronics MPA 401 Series User Guide - Manual (Page 13)

Remote Input Port
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Remote input port — This 3-pin, captive screw
port allows a wall-mounted audio controller to
control volume and mute levels remotely (see
Remote Control Options on page 12 if using a
MediaLink controller).
NOTE: The remote control port may be labeled
in one of two ways (see the diagram to the
right). The wiring and function are the same
whichever way the product is labeled.
Wiring for remote control
Options for remote control include the Extron VC 50, VCM 100 AAP, VCM 100 MAAP,
VCM 200 series, and MLA VC10 Plus. For information about part numbers, see
www.extron.com . Third party 10k potentiometer volume controllers can also be
connected to this port.
Figure 4 and the instructions below, show the wiring for the VCM 100 MAAP. Wiring other
remote control connectors is similar.
V C G
10V 50mA
REMOTE
GND (Pin 3)
Volume Pot
10K Ohms
2K Vol/Mute
(Pin 2)
10 V (Pin 1)
Mute
Switch
Figure 4. Remote Control Wiring
• Pin 1 is 10 VDC reference voltage.
• Pin 2 (Vol/Mute) can be used as a variable voltage input between 0 and 10 VDC, with
0 V giving full attenuation and 10 V giving maximum volume. It can also be used for
remote control muting. Sound is muted while the mute pin is shorted to ground.
• Pin 3 is ground.
NOTE: All nominal levels are at ± 10%.
MPA 401-70V and MPA 401-100V • Rear Panel and Cabling 7
V C G
10V 50mA
REMOTE
REMOTE
VOL/MUTE
10V 50mA