Specifications

Pelco Manual C1920M-D (4/03) 13
1. Connect the video to the multiplexer video inputs.
For monochrome multiplexers, use standard VCRs. For color multiplexers, use
standard or SVHS VCRs.
For standard VCRs, use the BNC connectors (refer to Table A). For SVHS VCRs, use
the SVHS connectors (use video cable designed for SVHS).
Connecting One VCR (Simplex/Duplex Models)
Refer to Figure 7.
a. Connect VCR OUT on the multiplexer to the video IN on the VCR.
b. Connect VCR IN on the multiplexer to the video OUT on the VCR.
Connecting Two VCRs (Duplex Model Only)
This configuration uses one VCR to record and another to play. Refer to Figure 8.
a. Connect VCR OUT on the multiplexer to the video IN on the VCR on which you
want to record.
b. Connect VCR IN on the multiplexer to the video OUT on the VCR on which you
want to play a tape.
2. The multiplexer’s camera switching rate must match the VCR’s recording speed. Use
one of the two ways shown below:
• Head Switching Pulse – This is the most reliable way to synchronize the
multiplexer and VCR. The pulse from the VCR tells the multiplexer how fast to
switch between cameras. (If you use this method, you do not need to program the
rate; however, you must set VCR Switch Pulse to ENABLED + or ENABLED –
[depending on whether the VCR sends a positive or negative pulse to activate
recording] in the Record Setup menu.) You can pull the six-pin plug-in terminal
block out of the connector on the back of the multiplexer to make wiring easier.
Refer to Figure 7 or Figure 8 and connect HS and ground from the multiplexer to
the VCR.
• Programming – You can synchronize the VCR and multiplexer by programming
the multiplexer switching rate to match the VCR’s recording speed. No wiring is
required. Refer to the
Programming section.
Proceed to step 5, Alarms .