EFJohnson 3000 SERIES - Manual (Page 105)

INTELLIGENT DISPATCH MODULE (IDM)
12-5
Secondary Transmit and Receive
Not aligned since the IDM does not use FSK
signaling.
12.5 PCM SUMMATION PERSONALITY CARD
The PCM Summation Personality Card sums
multiple time slots on the PCM audio bus for the unse-
lect audio for the Multi-Net Tracer Series of consoles
(see Figure 12-3).
12.5.1 INTERNAL CONNECTIONS
1. Plug the personality card into J32.
2. Plug the personality card into the piggyback bus via
J31.
3. Connect a wire harness to:
Rx PCM Primary U26, pin 13 (Blk)
Master Clock U26, pin 9 (Wht)
Master Sync U26, pin 7 (Red)
4. Connect the summed audio using a wire harness to
M-lead relay K1, pin 1 (Wht) and pin 4 (Red).
5. Remove Q12 to ensure the M-lead is inactive.
6. Plug the wire harness into the audio summation
board.
12.5.2 EXTERNAL CONNECTIONS
The summed audio output is on the MA and MB
external connections. The unselect audio is then
connected to the MA and MB leads.
12.5.3 ALIGNMENT PROCEDURE
1. Set CIM S5 to Test 9 (open section 1-4, close 2-3).
2. Set IDM S5 to Test 9 (open section 1-4, close 2-3).
3. Adjust R1 for +2.5 dBm at TP1 on the PCM
Summation card.
4. Adjust R25 for -3 dBm at TP2 on the PCM Summa-
tion card.
5. Set S5 on CIM and IDM (all closed).
6. Reset each module, Press S2 and release.