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6.
Set the 2W CHAN SEL switches to either OFF
position.
7.
Input a 1 kHz, -10dBu test signal at the 4-wire audio
input. Use either connector:
9-Pin Connector
Pin 7: Balanced Audio - input
Pin 8: Balanced Audio + input
RJ11 Connector
Pin 2: Balanced Audio + input
Pin 5: Balanced Audio - input
8.
Adjust RV102 (System A) or RV202 (System B)
while watching the bottom display (TO2W). All of
the green displays should be lit and no amber dis-
plays should be lit.
9.
Remove the test signal. This completes the adjust-
ment.
4.4 CALL SIGNAL OPTION CARD
INSTALLATION
Use these instructions to install a Call Signal Option Card
in an SSA-424 that was originally ordered without it.
1. Disassemble the SSA-424 as previously described.
2. Assemble the standoffs to the circuit board using the
supplied screws and lockwashers.
3. Connect the supplied power cable from J8 on the op-
tion card to J303 on the main board of the SSA-424.
4. Insert the connectors on the option card into the con-
nectors on the main board.
5. Use the remaining screws and lockwashers to secure
the standoffs to the main board.
6. Reassemble the SSA-424.
Figure 11. The Call Signal Option Card after installaton
in the SSA-424.
User Instructions, SSA-424 Dual Digital Hybrid 17
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