Remote Standby Port - Extron electronics XPA Ultra Series User Manual

Wiring Channels 1 & 2 Volume Control Ports to a Single Device
(Optional)
In some applications, it
may desirable to control the
volume of both channels
from a single control device;
for example, when using
Channels 1 and 2 as a
stereo pair (discrete left
and right audio). The XPA
U 3502 accommodates
this by offering the option
to wire Channel 1 and
Channel 2's remote volume
control ports together. To
connect the ports, wire
Channel 1's C and G pins to
the corresponding pins on
Channel 2, as seen in the
image to the right.

Remote Standby Port

The 2-pole 3.5 mm captive screw port is
used to remotely place the amplifier into
standby.
Connecting the Standby pin to the Ground
pin places the amplifier in standby mode.
Standby mode turns off all output, although the amplifier is still
receiving power. Use the included 2-pole 3.5 mm captive screw
connector to remotely ground the Standby pin. The power indicator
LED lights amber when the amplifier is in standby mode.
The amplifier will automatically enter standby mode after
25-minutes of inactivity from a loss of signal. The inactivity timer
can be disabled by wiring a 10 kΩ resistor between the Standby
and Ground pins, as seen to the right. The amplifier can still be
forced into standby mode via the remote standy connector.
The following table summarizes the amplifier's behavior in various
scenarios:
Remote Port Action
No action (open)
Open to close
Close to open
No action (open)
Open to close
Close to open
Inactivity Time Since Last Detected Signal
Timer
<25 min
Defeated
N Amp remains active
N Amp enters standby Amp remains in
N Amp becomes
active; timer restarts
Y Amp remains active
Y Amp enters standby
Y Amp becomes
active
>25 min
Amp enters standby
standby
Amp becomes active;
timer restarts
—
—
—
XPA U 3502 • Operation 16