TM 11-7025-221 -20
1-10. Location and Description of Major Components - Continued.
Except for the H-250 handset connector located on front panel A23, all external connections are made
to connectors located on the rear of the TD-1337(V)/G.
a. Each TD-1337(V)/G model has a different complement of rear connectors, The facing illustration
shows which connectors are used on each TD-1337(V)/G model. The illustration also contains a chart
that provides information about each rear connector. Using rear connector J3 as an example, the chart
provides the following information:
Connector J3 is one end of cable assembly W8 (refer to b below).
Connector J3 is used on all four models.
Connector J3 provides the conditioned diphase (group modem) interface.
Input/output signals appearing at connector J3 go to or come from plug-in card A20.
When a rear connector is not used on a given model, a plate is installed to cover that connector's cutout.
Organizational maintenance will be involved with these rear connectors when installing or removing a TD-
b. Each rear connector, except for J5, J10, and E1, is one end of a cable assembly. The other
end of each cable assembly is one or more plugs that slip over pins on the bottom of the backplane
and completes the interconnection to the plug-in card. Organizational maintenance is not authorized to remove
or repair these cable assemblies (does not apply to U.S. Air Force).
c. Connector J5 is an integral part of the RFI filter which is attached to the inner rear of the case.
The RFI filter provides rf filtering of the ac input power. Organizational maintenance is not authorized
to replace the RFI filter (does not apply to U.S. Air Force).
d. Connector J10 is an integral part of red CESE assembly A25. The red CESE assembly performs
final formatting of CESE telemetry and outputs the data (in red) to the DLED. Red CESE assembly A25
is replaceable by organizational maintenance.
El is a ground stud and is used to ground the TD-1337(V)/G case.