ZETRON 4000 Series, Руководство по установке

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67
Wiring to the Channels
Each 50-conductor plug carries four radio channels, referred to as Channel A, B, C and D.
Each channel includes twelve signals.
Figure 13 is a schematic of conventional signals, equivalent circuits, and the plug
connections on which they are found.
Table 22 is a summary of the signals found on each channel plug. Table 22 also contains
the wire colors for the 25-pair cables typically used to connect to the plugs. Figure 14 and
Figure 15 show the corresponding punch-down connections.
Figure 13: Channel Signal Equivalent Circuits
50-Pin Connector Pin Numbers
Ch-A Ch-B Ch-C Ch-D Signal
1 7 13 19 PTT +
26 32 38 44 PTT –
2 8 14 20 COR +
27 33 39 45 COR –
3 9 15 21 Aux Output
28 gnd 34 v+ 40 gnd 46 v+ Ground or V+
4 10 16 22 Tx Audio +
29 35 41 47 Tx Audio –
5 11 17 23 Rx Audio +
30 36 42 48 Rx Audio –
6 12 18 24 X-Busy Input
31 37 43 49 X-Busy Output
3.3K Ohm
10K Ohm
+12V
10K Ohm
2.2 uF
10K Ohm
2.2uF
600 Ohm
600 Ohm
+12V
1k