Extron electronics IPCP Pro 250 User Manual page 27

Volume control port — To provide volume control for Extron half rack audio amplifiers,
K
connect this port to the volume remote control port on the amplifier as shown below.
Configure the maximum and minimum voltage limits. Set Soft Start mode off or on
(default). Soft Start mode allows volume to gradually increase from mute to the previous
level after muting or power-on to prevent loud audio bursts.
Reference
voltage: ≤10 VDC
V C G
Rear Panel
Control voltage output:
0 - 10 VDC
VOL
V C G
G
Ground (Gnd)
C Control voltage (variable output to amp from IPCP Pro) – This signal controls the amp volume.
V
Reference voltage input (from ampli er) – This allows the IPCP Pro to detect when the amp is present.
Example:
Connecting to
Extron Amplifiers
VOL
IPCP Pro
V C G
Rear
Panel
G Ground
C
Control voltage
V Reference voltage
Figure 18.
Volume Control
This port can be used to control the volume and mute or
unmute the audio for Extron half rack width audio ampli ers.
• Connect to an Extron audio ampi er to permit volume
control via touchpanel controls, macros, or schedules.
• Do not exceed 10 VDC input voltage.
Con gure the maximum and minimum voltage limits. Set
Soft Start mode off or on (default) . Soft Start mode allows
volume to gradually increase from mute to the previous level
after muting or power-on to prevent loud audio bursts
XPA 1002 MPA 401 Series MPA 181T,
MP 101 Series
REMOTE
10V 50mA
10V 50mA
REMOTE
G
10V
VOL/MUTE
V C G V C G
MPA 152 Plus MPA 152
REMOTE
V C G
VOL/MUTE
10V 50mA
10V 50mA
C or VOL/MUTE
V or 10V G or
Volume Control Port Wiring Examples
IPCP Pro Series • Hardware Features and Installation
NOTE: Use shielded cable and
place the control processor
as close as possible to the
ampli er to avoid picking up
background noise via the
cable. Ideal cable length is
six feet or less.
NOTE: When audio mute is active, the
control processor sets output voltage
to 0 VDC, even if the voltage range
(minimum and maximum voltage
limits) has been set to levels above
zero, such as 2 V to 8 V.
21