TM 11-7025-221-10
CHAPTER 1
INTRODUCTION
Section I. GENERAL INFORMATION
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Page
Subject
Maintenance Forms, Records, and Reports . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Hand Receipt (-HR) Manual . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Reporting Equipment Improvement Recommendations (EIR's) . . . . . . . . . . . . . . . . . .
Nomenclature Cross-Reference List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
List of Abbreviations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Glossary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1-1. Scope.
a. Type of Manual. This manual contains operator procedures and maintenance instructions for the
Digital Multiplexer TD-1337(V)/G family.
b. Model Numbers and Equipment Name. Digital Multiplexer TD-1337(V)/G (hereafter referred to as
the TD-1337(V)/G) is the military nomenclature assigned to a family of digital multiplexer. There are four
models in the TD-1337(V)/G family. Each model is assigned its own military nomenclature as listed below.
Digital
Multiplexer
TD-1337(V)1/G
Digital
Multiplexer
TD-1337(V)2/G
Digital
Multiplexer
TD-1337(V)3/G
Digital
Multiplexer
TD-1337(V)4/G
This manual covers all four models. Differences between models are denoted throughout this manual by
notes, exceptions, separate procedures, or other appropriate means. When the term TD-1337(V)/G is used
in this manual, it means all four models.
c. Purpose of Equipment. The TD-1337(V)/G is a synchronous time division digital multiplexer used
in a satellite earth terminal. The TD-1337(V)/G provides a full duplex capability in interfacing the modem
in the terminal radio equipment with ground equipments. Inputs from synchronous data users are multiplexed
(combined) into a single output supergroup (SG) and supplied to the modem in the terminal radio equipment
for transmission. Similarly, received SG(s) are demultiplexed (recombined) into their composite parts and
supplied to the respective data users.
1-2. Maintenance Forms, Records, and Reports.
a. Reports of Maintenance and Unsatisfactory Equipment. Department of the Army forms and procedures used
for equipment maintenance will be those prescribed by TM 38-750, The Army Maintenance Management System
(Army). Air Force personnel will use AFR 66-1 for maintenance reporting and TO-00-35D54 for unsatisfactory
equipment reporting. Marine Corps personnel will use forms and procedures prescribed by TM 4700-15-1/D.
b. Report of Packaging and Handling Deficiencies. Fill out and forward SF 364 (Report of Discrepancy (ROD)) as
prescribed in AR 735-11-2/DLAR 4140.55/NAVMATlNST 4355.73/AFR 400-54/MCO 4430.3E.
c. Discrepancy in Shipment Report (DISREP) (SF 361), Fill out and forward Discrepancy in Shipment Report
(DISREP) (SF 361) as prescribed in AR 55-38 /NAVSUPlNST 4610.33 B/AFR 75-18/MCO P4610.19C/DLAR 4500.15.
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