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TM 9-6625-1897-14-1




TECHNICAL MANUAL




OPERATOR'S, ORGANIZATIONAL, DIRECT SUPPORT,

AND GENERAL SUPPORT MAINTENANCE MANUAL



DIFFERENTIAL COMPARATOR

TEKTRONIX TYPE 3A7




This is a reprint
including Change 1.




HEADQUARTERS, DEPARTMENT OF THE ARMY
JUNE 1972
TM 9-6625-1897-14-1




NOTE

This manual is an authentication of the manufacturer's commercial literature
which, through usage, has been found to cover the data required to operate and
maintain this equipment. Since the manual was not prepared in accordance with
military specifications, the format has not been structured to consider level of
maintenance nor to include a formal section on depot overhaul standards.




This manual contains copyrighted information, reproduced by permission of
Tektronix, Inc. All rights reserved.
TM 9-6625-1897-14-1
Change 2

Change HEADQUARTERS
DEPARTMENT OF THE ARMY
No. 2 WASHINGTON, DC, 11 April 1986



OPERATOR'S, ORGANIZATIONAL, DIRECT SUPPORT
AND GENERAL SUPPORT MAINTENANCE MANUAL,
INCLUDING REPAIR PARTS AND SPECIAL TOOLS LIST:
DIFFERENTIAL COMPARATOR,
TEKTRONIX TYPE 3A7
(NSN 6625-00-228-7845)

Current as of 11 April 1986



TM 9-6625-1897-14-1, 15 June 1972, is changed as follows:

1. Remove old pages and insert new pages as indicated below. New or changed material is indicated by a vertical bar in
the margin of the page.

Remove pages Insert pages
i i
10-1 through 10-3

2. File this change sheet in front of the publication for reference purposes.


By Order of the Secretary of the Army:



JOHN A. WICKHAM, JR.
General, United States Army
Chief of Staff
Official:



R. L. DILWORTH
Brigadier General, United States Army
The Adjutant General




Distribution:
To be distributed in accordance with DA Form 12-34C, Block No. 319, requirements for calibration procedures
publications.
TM 9-6625-1897-14-1
Change 1


Change HEADQUARTERS
DEPARTMENT OF THE ARMY
No. 1 WASHINGTON, DC 1 April 1975




OPERATOR'S ORGANIZATIONAL, DIRECT SUPPORT,
AND GENERAL SUPPORT MAINTENANCE
MANUAL, INCLUDING REPAIR PARTS AND
SPECIAL TOOLS LIST:
DIFFERENTIAL COMPARATOR,
TEKTRONIX TYPE 3A7
(NSN 6625-00-228-7845)




Current as of 11 September 1974



TM 9-6625-1897-14-1, 15 June 1972, is changed a follows:

1. The title is changed to read as shown above.
2. Remove old pages and insert new pages as indicated below. New or changed material is indicated by a vertical bar in
the margin of the page.

Remove pages Insert pages
i i
10-1 through 10-3

3. File this change sheet in front of the publication for reference purposes.
TM 9-6625-1897-14-1


By Order of the Secretary of the Army:



FRED C. WEYAND
General, United States Army
Official: Chief of Staff



VERNE L. BOWERS
Major General, United States Army
The Adjutant General




Distribution:
To be distributed in accordance with DA Form 12-34, Section II, (qty rqr block No. 75) requirements for Calibration
Procedures Publications.
TM 9-6625-1897-14-1



Technical Manual HEADQUARTERS
DEPARTMENT OF THE ARMY
No. 9-6625-1897-14-1 Washington, D.C., 15 June 1972




OPERATOR'S, ORGANIZATIONAL, DIRECT SUPPORT, AND
GENERAL SUPPORT MAINTENANCE MANUAL INCLUDING
REPAIR PARTS AND SPECIAL TOOLS LIST
DIFFERENTIAL COMPARATOR,
TEKTRONIX TYPE 3A7
(NSN 6625-00-228-7845)




Page
Section 0. INTRODUCTION ................................................................................................................0-1
1. CHARACTERISTICS ..........................................................................................................1-1
2. OPERATING INSTRUCTIONS ............................................................................................2-1
3. CIRCUIT DESCRIPTION.....................................................................................................3-1
4. MAINTENANCE..................................................................................................................4-1
5. MAINTENANCE CALIBRATION ..........................................................................................5-1
6. ELECTRICAL PARTS LIST.................................................................................................6-1
7. MECHANICAL PARTS LIST................................................................................................7-1
8. DIAGRAMS ........................................................................................................................8-1
9. PREVENTIVE MAINTENANCE INSTRUCTIONS..................................................................9-1
10. (Deleted)............................................................................................................................10-1
APPENDIX A. REFERENCES ...................................................................................................................A-1
B. BASIC ISSUE ITEMS LIST AND ITEMS TROOP INSTALLED OR
AUTHORIZED LIST (Not Applicable) ...............................................................................B-1
C. MAINTENANCE ALLOCATION CHART...............................................................................C-1
10. REPAIR PARTS LIST.........................................................................................................10-1




I U.S. GOVERNMENT PRINTING OFFICE 1986--635-395/20184 REGION #4




Change 2 i
TM 9-6625-1897-14-1

SECTION 0
INTRODUCTION


Scope Report of Packaging and Handling Deficiencies. Fill out and
forward DD Form 6, Report of Packaging and Handling
This manual includes installation and operation instructions Deficiencies, as prescribed in AR 700-58 (Army), NAVSUP
and covers operators, organizational, direct support (DS), and Pub 378 (Navy), AFR 71-41 (Air Force), and MCO P4030.29
general support (GS) maintenance. It describes Differential (Marine Corps).
Comparator, Tektronix Type 3A7.
The basic issue items list is not applicable. Discrepancy in Shipment Report. Fill out and forward SF
361, Discrepancy in Shipment Report (DISREP), as prescribed
Indexes of Publications in AR 55-38 (Army), NAVSUP Pub 459 (Navy), AFM 75-34 (Air
Force), and MCO P4610.19 (Marine Corps).
DA Pam 310-4. Refer to the latest issue of DA Pam 310-4 to Reporting of Equipment Publication Improvements. The
determine if there are any new editions, changes, or additional reporting of errors, omissions, and recommendations for
publications pertaining to the equipment. improving this publication by the individual user is encouraged.
DA Pam 310-7. Refer to DA Pam 310-7 to determine Reports should be submitted on DA Form 2028
whether there are modification work orders (MWO) pertaining (Recommended Changes to Publications) and forwarded direct
to the equipment. to: Commanding General, U. S. Army Missile Command,
ATTN: AMSMI-MFM, Redstone Arsenal, AL 35809.
Forms and Records

Reports of Maintenance and Unsatisfactory Equipment. Use
equipment forms and records in accordance with instructions
given in TM 38-750.




0-1
TM 9-6625-1897-14-1




Fig. 1-1. The Type 3A7 Differential Amplifier.

0-2
TM 9-6625-1897-14-1

SECTION 1
CHARACTERISTICS

General Information resistance matches the 10X input attenuator resistance within