Comtech EF Data CDM-760, Installation And Operation Manual

Page: 56 / 441

Rear Panel Connections Revision 4
CDM-760 Advanced High-Speed Trunking Modem MN-CDM760
3–3
3.1.2 D-Subminiature Cable Connections
Type ‘D’ Connection Type Example
Chassis Receptacles:
Female (top)
Male (bottom)
Type ‘D’ Cable with Jack Screws
(female shown)
Figure 3-2. D-Subminiature Connector Examples
D-Subminiature connectors are also called Type ‘D’ or ‘ D-Sub ’ connectors. The connector pair
features multiple rows of pins (male side) coupled to mating sockets (female side). The cable
plug and chassis receptacle each feature a D-shaped profile that interlock to ensure proper pin
orientation and connector seating.
Either chassis receptacle gender features two jack nuts for secure assembly of the cable plug to
the chassis receptacle.
Whether its gender is male or female, the cable plug features two jack screws for secure
connection to the jack nuts provided on the mating chassis receptacle. The jack screws may be
hand tightened or tightened with a standard flat-blade screwdriver.
Connection Instructions:
Orient the plug to the receptacle in the proper position. Press firmly
into place. Use the jack screws to secure the plug to the receptacle jack nuts. Do not over-
tighten.
About connector pinout tables: Figure 3-2 identifies the Pin 1 location for either gender
connector. Unless noted otherwise, the connector pinout tables provided in this manual
arrange/order information (i.e., the Pin # column/row) based on this orientation.
3.1.3 RJ-45, RJ-48 Cable Connections
The plug for an RJ-45 or RJ-48 cable features a flexible tab. The RJ-45 or RJ-48
jack features a mating slot. This design configuration assures proper
installation and pin orientation.
Connection Instructions: Press down the tab on the cable plug, and then
insert the plug into the RJ-4
x
jack. The connection is complete when the tab
‘clicks’ into position inside the jack.