Extron electronics XPA U 1004 SB, Руководство пользователя

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XPA U 1004 SB and XPA U 2002 SB • Operation 17
Options for remote control include the Extron VC 50, VCM 110 AAP, VCM 200 series, MLA
VC10 Plus, and select MLC controllers. For information on these devices, including part
numbers, go to
www.extron.com . Third party 10k potentiometer volume controllers can
also be used for remote volume and mute control (see figure above for details)
STANDBY
G
REMOTE
G C
V
1 & 2
GND (Pin 3)
Volume Pot
10K Ohms
2K
Vol/Mute
(Pin 2)
10 V (Pin 1)
Mute
Switch
Figure 15. Remote Volume Control Connector
Remote Standby Port
The 3.5 mm 2-pole 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 3.5 mm 2-pole captive screw connector to remotely ground the Standby pin. The
power indicator LED lights amber when the amplifier is in standby mode.
STANDBY
G
REMOTE
G
C V
1
REMO
G
C V
1
S
O
Ground
Standby
Figure 16. Remote Standby Port
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. 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 Inactivity
Timer
Defeated
Time Since Last Detected Signal
<25 min >25 min
No action (open) N Amp remains active Amp enters standby
Open to close N Amp enters standby Amp remains in standby
Close to open N Amp becomes active;
timer restarts Amp becomes active;
timer restarts
No action (open) Y Amp remains active —
Open to close Y Amp enters standby —
Close to open Y Amp becomes active —