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SYSTEM WIRING
This section provides a description of all system wiring diagrams provided with your 2120 system. These drawings
include:
l
System interconnection drawings for the communications channels, any audio/phone lines, and all powering.
o Equipment cabinet drawings showing component locations and external (contractor) connections.
l
M-21 20 and M-2120-ET (if applicable) initiating wiring diagrams.
We will discuss each of these drawings separately.
Note: The drawings discussed in this section are samples only. Each individual 2120 system has its own set of
drawings similar to the ones shown in this manual.
System Interconnection Drawings
Each 2120 system is provided with a set of specific system interconnection drawings. These drawings include:
l
Communications channel, or data line, interconnections.
0 Power line interconnections.
l
Audio line interconnections (if applicable).
l
Telephone line interconnections (if applicable).
o A cabinet interconnection and drawing list.
The cabinet interconnection and drawing list (see sample, Figure 24) should be the first drawing you check. This
drawing tells you:
l
Which cabinets are interconnected on Channel 1 for the power line and audio sub-riser (if required).
l
Which cabinets are interconnected on Channel 2 for the power line and audio sub-riser (if required).
l
What specific cabinet wiring diagrams should be included for your system.
You should verify that all wiring diagrams listed on the cabinet interconnection and drawing list are included in your
system. Each equipment cabinet should have its own wiring diagram.
Note: If your system does NOT have all the wiring diagrams specified in the cabinet interconnection and drawing
list, notify your Simplex representative or Simplex Technical Support immediately.
Take a look at the sample in Figure 23. This table is labeled “CHANNEL 1.” Notice that all equipment on Channel
1 is listed by cabinet number. For example, the first cabinet number is called “B-MUX.” Therefore, the BMUX is the
first equipment cabinet on Channel 1. The BMUX in this case contains a local BT; therefore, transponder number
1 is located in the BMUX equipment cabinet. The associated wiring diagram number for the BMUX cabinet is 3981-
743.
CHANNEL
I
Cabinet Interconnection and Drawing List Close-Up
FIGURE 23
25
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