Pelco Manual C1941M (7/98) 11
3.2.2 Relay Output Connector
Figure 6 illustrates the rela y output connector and its relativ e port pin assignments.
The connector is a three-position plug with scre w-type contacts similar in operation
to the mating connectors just discussed.
By def ault, the relay is in its normal state at power up of the unit as sho wn in Figure
6. During operation, the relay may be toggled by controlling the 64th VCR on the
VCRC by entering VCR number 64 on the keypad, then pressing the Camera but-
ton which brings up the VCR control functions and then pressing the blue button
under the PLAY control icon. Similarly , performing the abov e but pressing the ST OP
VCR control command instead of the PLAY command will deactivate the rela y. Re-
fer to Section 5.2, OPERATING THE CM9760-VCRC FROM THE CM9760-KBD,
for more details on the operational use of the VCRC from the CM9760-KBD.
3.2.3 Communication Connectors
Communication to and from the unit is provided through two RJ-45 por ts on the
rear of the CM9760-VCRC . The ports are referenced as serial port 0 and serial port 1
(refer to the functional block diagram in Figure 17).
Serial Port 0 is associated with the RJ-45 IN f emale connector and is configured for
RS-422 operation by default. In the configuration, the RJ-45 IN connector allows
the VCRC unit to be connected to an appropriate Sercom port on the rear of a
CM9760-CC1 controller .
Serial por t 1, associated with the RJ-45 OUT connector, is always configured as
RS-422 and is used for daisy-chaining subsequent VCRC units (see Section 4.2,
REMOTE OPERATION).
Individual connector pin-outs of the communication channels are discussed next.