TM 11-6625-2629-14&P
CHAPTER 1
INTRODUCTION
Section I. GENERAL
b. Report of Packaging and Handling
1-1. Scope
Deficiencies. Fill out and forward DD Form 6
a. This manual describes Meter, Modulation
(Packaging Improvement Report) as prescribed
ME-57A/U (fig. 1-1) and provides instructions
in AR 700-58/NAVSUPINST 4030.29/AFR 71-
for operation, organizational maintenance, direct
13/MCO P4030.29A, and DSAR 4145.8.
support (DS) maintenance, and general support
c. Discrepancy in Shipment Report (DISREP)
(GS) maintenance. Instructions are provided for
(SF 361). Fill out and forward Discrepancy in
the operator and the organizational repairman for
S h i p m e n t Report (DISREP) (SF 361) as
installation, operation, preventive maintenance
prescribed in AR 55-38/NAVSUPINST
and replacement of parts available at
4610.33A/AFM 75-18/MCO P4610.19B, and
organizational maintenance. Circuit functioning
DSAR 4500.15.
is included for general support maintenance,
d. Administrative Storage. For procedures,
together with instructions appropriate to that
forms and records, and inspections required
category of maintenance for troubleshooting,
during administrative storage of this equipment,
testing, adjusting, aligning and repairing the
refer to TM 740-90-1.
equipment and replacing maintenance parts.
There are no maintenance functions for the ME-
1-4. Destruction of Army Materiel
57A/U assigned to the direct support level.
Appropriate procedures for destruction of Army
b. Throughout this manual, Meter, Modulation
materiel to prevent enemy use and the cir-
ME-57A/U will be referred to as the modulation
cumstances surrounding said destruction are
-
meter. Specific meters within the equipment are
covered in TM 750-244-3.
r e f e r r e d to by the associated front panel
1-5. Reporting of Equipment Publication Im-
markrngs.
provements
c. Appendixes B and C are current as of 10
The reporting of errors, omissions, and recom-
April 1975.
mendations for improving this publication by the
1-2. Indexes of Equipment Publications
individual user is encouraged. Reports should be
a. DA Pam 310-4. Refer to the latest issue of
submitted on DA Form 2028 (Recommended
DA Pam 310-4 to determine whether there are
Changes to Publications and Blank Forms) and
new a d d i t i o n s , c h a n g e s , o r a d d i t i o n a l
forwarded direct to Commander, US Army
publications pertaining to the equipment.
Electronics Command, ATTN: AMSEL-MA-Q,
b. DA Pam 910-7. Refer to DA Pam 310-7 to
Fort Monmouth, NJ 07703.
determine whether there are modification work
1-6. Calibration
orders (MWO's) pertaining to the equipment.
Pertinent publications on calibration of this
1-3. Forms and Records
equipment shall be referenced. Refer to DA Pam
a. Reports of Maintenance and Unsatisfactory
310-4.
Equipment. Maintenance forms, records, and
reports which are to be used by maintenance
personnel at all maintenance levels are listed in
and prescribed by TM 38-750.
Section II DESCRIPTION AND DATA
1-7. Purpose and Use
modulated (fro) signal generators and fm trans-
mitters. T h e equipment rapidly measures
The modulation meter determines the accuracy of
deviation over a range from O to 1,000 kiloHertz
frequency deviation calibrations of frequency
1-1
