TM 9-4931-294-15/2
CHAPTER 1
INTRODUCTION
with manufacturer's handbooks is listed in table 1-1.
1-1. Scope
Table 1-1. Equipment Supplied with Manufacturer's
a. This manual is published for the information and
Handbook
guidance
of
personnel
concerned
with
the
Item
Identifying No.
troubleshooting, repair and overhaul of microwave
Amplifier, video
7911959
calibration test set AN/USM234 (figure 1-1). This manual
Decade box, resistor, power
7907284
contains a brief functional description, the theory of
Measurement system, fre
7910628
operation, and instructions for troubleshooting, repair,
quency, time
overhaul, shipment, storage, and destruction to prevent
Meter, power
7910462-3
enemy use. This information is for use by calibration and
Meter, SWR
7910160-3
depot personnel.
Modulator
7912821
b. Information concerning items of the test set is
Modulator, PIN
7912581
contained in three technical manuals. The designation
Modulator, PIN
7912582
Modulator, PIN
7912583
and content are as follows:
Modulator, PIN
7912822
(1) TM 9493129415/1, description, inspection
Multimeter. service
7904729
operation, operator's maintenance, and preventive
Oscilloscope, with
791065-3
maintenance.
Amplifier, dualtrace,
7911441-2
(2) TM 9-4931-294-15/2, theory of operation,
plug-in
troubleshooting, repair and overhaul.
Time base unit, plug-in
7912040-2
(3) TM 9493129415/3, calibration procedures.
Power supply, regulated
7912817
c. The appendices included in TM 9493129415/1
Power supply, BWO
7923106
Receiver, microwave
7923103
contain the following information:
Standing wave detector
8579859
(1) Appendix A contains a list of current
Synchronizer, tunable
7923102
references, including supply and technical manuals,
Voltmeter, digital, ac/dc
7912073-3
forms and other available publications applicable to the
Voltmeter, rms
7911058-3
test set.
(2) Appendix B contains the maintenance
e. Report of errors, omissions, and recommendations
allocation charts which list maintenance responsibilities
for improving this equipment manual by the individual
allocated to each echelon of maintenance.
user is encouraged. Reports should be submitted on DA
(3) Appendix C lists the basic issue items available
Form 2028 (Recommended Changes to Publications)
for operation.
and forwarded direct to: Commander, U. S. Army Missile
d. The three technical manuals listed above do not
Command, ATTN: AMSMIMFM, Redstone Arsenal,
'contain detailed information for the commercial catalog
Alabama 35809.
equipment of the test set. Detailed information is
provided in the form of additional technical manuals or
1-2. Functional Description
manufacturer's handbooks. Equipment that is supplied
The test set is a self-contained mobile laboratory
designed to make fundamental microwave
Change 1 1-1
