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Pelco Manual C539M-A (12/01) 7
SECTION II: CXTA DEFINING CHARACTERISTICS
A number of configuration and connection decisions are made at the CXTA level in order to
interface it with one of three controllers, one of two protocol “flavors” and a large selection
of receiver options. The next section lists connection and configuration options determined
at the CXTA level. For this purpose, the rear view of the CXTA is illustrated in Figure 2.
Figure 2. CM9760-CXTA Rear View
2.1 CONFIGURATION AND CONNECTIONS–CXTA
2.1.1 POWER
The CM9760-CXTA utilizes a 100V/240V@ 50/60Hz auto-ranging power supply. The exter-
nal cord connection, power switch and fuse are located on the right side of the unit when
viewed from the rear of the unit. For fuse replacement, refer to Figure 3. A power cord and
Euro-plug adapter are supplied with the unit.
Figure 3. Fuse Replacement
2.1.2 COMMUNICATIONS
The 8-pin, RJ-45 communication input connector located on the rear of the CXTA, and la-
beled IN, is the data connection to which all controllers must interface. This presents imme-
diate disparities with respect to source (controller) and destination (CXTA) connections that
are spelled out in Table A below:
Table A. Connection Disparities
CONTROLLER SOURCE CONNECTION/ DESTINATION
PROTOCOL FLAVOR (CXTA INPUT)
CM9760-CC1 RJ-45, 8-PIN, RS-422/ P Protocol RJ-45, 8-PIN,
MPT9500 RJ-12, 6-PIN, RS-485/ D Protocol RS-422, P or
DX7000 DB9, RS-232/ D Protocol D Protocol
In section
3.2 Installation Configurations
, questions related to controller/translator connec-
tivity are answered by means of controller-specific illustrations.
The 8-pin, RJ-45 communication output connector labeled OUT is located next to the input
connector and is used to connect, daisy-chain or cascade two CXTA units together, result-
ing in 32 ports addressable from one controller port. Not all controllers, however, can utilize
cascading and/or are capable of addressing 32 ports.
BNC PAIRS (1-16) POWER LED/
DIP SWITCH
COMM
LINES
POWER IN/
FUSE/
ON-OFF SWITCH
SPARE FUSE