Pelco c1943m Pelco Manual C1943M (9/99) 7, INPUT VCR CONNECTORS

Pelco Manual C1943M (9/99) 7INPUT VCR CONNECTORS

Physically, each of the four VCRC-P input connectors consists of the same number of input

screw-type terminals. Each input group uses a dual-row removable plug and each plug is

associated with 8 VCR inputs.

For example, refer to the leftmost group represented in Figure 5, which shows VCR inputs

1-16. Of these VCR inputs, 1-8 are wired using the top 16 screw terminal positions. VCR in-

puts on this connector physically alternate with their associated GND connection for a total

of 8 available VCR/GND connections: that is, pin 1 is VCR input 1 and pin 2 is the GND

connection associated with VCR input 1; pin 3 is VCR input 2 and pin 4 is VCR input 2’s as-

sociated GND connection, and so on. The same explanation applies to the lower plug for

VCR inputs 9-16, starting with VCR input 9, which is associated with physical pin 17 on the

mating plug.

Similarly, the remaining plug (upper/lower) combinations accommodate the three remaining

VCR input blocks: that is, inputs 17-32 are handled by header two, inputs 33-48 by header

three, and inputs 49-64 by header four.

IMPORTANT:

Control cable

length should not

be extended further than the

supplied 50 feet (15.2 m). It

is also recommended that

shielded cable be used to

minimize external electrical

interference with VCRC-P

control signals. You should

also avoid ground loops of

any kind. See important note

in Figure 9 regarding power

hookup and interference.