Operating instructions

9
REMOTE LEVEL CONNECTIONS
The figure below shows several options which may be used for remote level control of the AS8. Pots, switches, and external
control voltages may all be used as the application dictates.
TROUBLESHOOTING
SYMPTOM POSSIBLE CAUSE
No sound from system 1) Main level control not turned up
2) Channel level not turned up
3) Input gain setting too low
4) Phantom power not on for electret microphone
5) Remote level control turned down
Difficulty activating certain mics 1) Mic level is too low relative to other mics - Turn up the mic level
All front panel channel LEDs are 1) If you are using just one AS8/AS8-TC, be sure the rear
on all the time, with or without panel Master/Slave switch is in the Master mode.
signal applied. 2) Be sure that the Direct/Auto dip switch associated with each channel is in
the Auto position. If changing these switches does not fix the problem, the
AS8/AS8-TC might be in the Remote mode. It can be reset to the Local
mode by turning the power off, shorting pins 10 and 15 together (located on
the rear panel Remote Level Control connector), and turning the power back
on while the pins are shorted.
3) If you are using more than one AS8/AS8-TC in your system, set the
AS8/AS8-TC whose Expansion In (but not Expansion Out) port is used to
Master mode, and all other AS8/AS8-TCs to Slave mode.
You can't control the channel and 1) The AS8/AS8-TC might be in the Remote mode, in which case it will
main gains from the rear panel not respond to control voltages applied to the Remote Level Control
Remote Level Control connector. pins. The AS8/AS8-TC can be reset to the Local mode by turning the
power off, shorting pins 10 and 15 together (located on the rear panel
Remote Level Control connector), and turning the power back on while
the pins are shorted.
Maximum Distance vs Wire
Gage for Remote Control
Connections
Single All 9
Control Controls
20 AWG 5000 ft 550 ft
22 AWG 3000 ft 350 ft
24 AWG 2000 ft 200 ft
26 AWG 1200 ft 125 ft
28 AWG 750 ft 75 ft
Control
Voltage
Gnd
Ch 1 Wiper
Pin 1
<<
Ch 2 Wiper
Pin 2
<
Ch 3 Wiper
Pin 3
<
Ch 4 Wiper
Pin 4
<
Ch 5 Wiper
Pin 5
<<
Ch 6 Wiper
Pin 6
<
Ch 7 Wiper
Pin 7
<<
Ch 8 Wiper
Pin 8
<
Ch 1-8 CCW
Pin 9
<<
Ch 1-8 CW
Pin 10
<<
Main CW
Pin 11
<
Main Wiper
Pin 12
<
Main CCW
Pin 13
<
N/C
Pin 14
<
Reset to Local
Pin 15
<
Continuous On/Off Continuous
Level Control, Ch 1 Channel Mute, Ch 5 Level Control, Ch 7
10k Linear Plot SPSTSwitch External DC Control Voltage
On - Open
Off - Closed
•
•
WIRING DIAGRAMS, REMOTE LEVEL CONTROL PORT
(REMOTE LEVEL CONTROL PORT, 15 PIN D-SUB)