TC12 Installation, Commissioning & Maintenance Handbook
7 ADDRESS BIT 5
8 ADDRESS BIT 6
9 ADDRESS BIT 7
10 0 V
11 ADDRESS BIT 8
12 ADDRESS BIT 9
13 ADDRESS BIT 10
14 ADDRESS BIT 11
15 ADDRESS BIT 12
16 ADDRESS BIT 13
17 0 V
18 DATA BIT 0
19 DATA BIT 1
20 DATA BIT 2
21 DATA BIT 3
22 DATA BIT 4
23 DATA BIT 5
24 DATA BIT 6
25 DATA BIT 7
26 0 V
27 MEMORY WRITE
28 0 V
29 MEMORY READ
30 0 V
31 DATA TX / RX
32 DATA ENABLE
33 +5 V
34 WATCHDOG FAIL
35 POWER FAIL
36 RESET OUT
37 +5 V
38 ZERO CROSS-OVER
39 EXPANSION I/O PCB SELECT
40 +5 V
Table 10 - Integral OTU SK2 SK3 - Test Jacks
PIN Transmit Jack SK2 (REPLY) Receive Jack SK3 (CONTROL)
1 NC NC
2 TC IN RC IN
3 TC OUT RC OUT
4 TC OUT RC OUT
5 GND GND
6 GND GND
6.3.3.2 Telephone Cable w ith 6-way Plug
The OTU comes fitted with a telephone cable terminated in a 6 way telecom plug.
Connect the telephone plug to the telephone socket in the traffic control
equipment.
Note The cable should never be disconnected from the PCB Socket SK1
whilst the other end is connected to the telephone network (via the
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