AAC-3390
I.R.T. Communications Pty Ltd | www.irtcommunications.com
Page 7 of 11
Revision 04
CONFIGURATION
Link settings:
NOTE:
Links LK6 and LK15 must both be set to the same setting, that is both OUT or both IN.
LK6 + LK15 OUT
Lock AES output to external AES reference (if present).
IN
Lock AES output to internal 48 kHz clock reference.
NOTE:
Links SW1 and SW2 must both be set to the same setting, that is both 75 or both 110.
SW1 + SW2
75
AES reference input 75 Ohm unbalanced BNC.
110
AES reference input 110 Ohm balanced 3-pin Phoenix plug type.
Rear Assembly:
Rear assembly links LK1 and LK2 open circuit (default) = analogue input impedance > 30 kΩ.
Rear assembly links LK1 and LK2 short circuited = analogue input impedance 600 Ω.
To short circuit rear assembly links LK1 and LK2, solder a wire link in place.
Potentiometer settings:
RV1 and RV2 set the AES output level. This is factory set at 4dBFS with an analogue input level of +20dBu.
RV3 sets when the analogue audio LEDs illuminate and has been factory set for a -30 dBu analogue input signal.
7
5
1
1
0
SW1 SW2
