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TB 9-6625-2176-35
Change 2
DEPARTMENT OF THE ARMY TECHNICAL BULLETIN
CALIBRATION PROCEDURE FOR
CONSTANT AMPLITUDE SIGNAL GENERATOR
AN/USM-272
AND
TEKTRONIX, TYPE 191
Headquarters, Department of the Army, Washington, DC
16 May 1988
TB 9-6625-2176-35, 15 April 1987, 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
1 and 2 1 and 2
7 and 8 7 and 8
2. File this change sheet in front of the publication for reference purposes.
By Order of the Secretary of the Army:
CARL E. VUONO
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.
PIN NO: 061693-002
TB 9-6625-2176-35
Change 1
DEPARTMENT OF THE ARMY TECHNICAL BULLETIN
CALIBRATION PROCEDURE FOR
CONSTANT AMPLITUDE SIGNAL GENERATOR
AN/USM-272
AND
TEKTRONIX, TYPE 191
Headquarters, Department of the Army, Washington, DC
31 March 1988
TB 9-6625-2176-35, 15 April 1987, 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
7 and 8 7 and 8
2. File this change sheet in front of the publication for reference purposes.
By Order of the Secretary of the Army:
CARL E. VUONO
General, United States Army
Chief of Staff
Official:
R. L. DILWORTH
Brigadier General, United State Army
The Adjutant General
Distribution:
To be distributed in accordance with DA Form 12-34C, Block No. 319, requirements for calibration procedures
publications.
THIS PUBLICATION IS A COURTESY QUICK COPY FRCM THE UNITED STATES ARMY
PUBLICATICNS DISTRIBUTION CENTER, ST. LOUIS, MISSOURI TO MEET YOUR NEEDS WHILE
WE REPLENISH OUR RULAR STOCK.
*TB 9-6625-2176-35
SUPERSEDED COPY DATED 2 AUGUST 1978
DEPARTMENT OF THE ARMY TECHNICAL BULLETIN
CALIBRATION PROCEDURE FOR
CONSTANT AMPLITUDE SIGNAL GENERATOR
AN/USM-272 AND TEKTRONIX, TYPE 191
Headquarters, Department of the Army, Washington, DC
15 April 1987
Approved for public release; distribution is unlimited.
REPORTING OF ERRORS
You can help improve this publication by calling attention to errors and by recommending
improvements and stating your reasons for the recommendations. Your letter or DA Form 2028,
Recommended Changes to Publications, should be mailed directly to Commander, U.S. Army TMDE
Support Group, ATTN: AMXTM-LPP, Redstone Arsenal, AL 35898-5400. A reply will be furnished
directly to you.
Paragraph Page
SECTION I. IDENTIFICATION AND DESCRIPTION
Test instrument identification ................................................... 1 2
Forms, records, and reports- .................................................... 2 2
Calibration description.............................................................. 3 2
II. EQUIPMENT REQUIREMENTS
Equipment required.................................................................. 4 3
Accessories required................................................................ 5 3
III. CALIBRATION PROCESS
Preliminary instructions............................................................ 6 4
Equipment setup ..................................................................... 7 4
Amplitude accuracy.................................................................. 8 5
Frequency accuracy................................................................. 9 7
Frequency response................................................................. 10 7
Power supply ........................................................................... 11 9
Final procedure........................................................................ 12 9
*This bulletin supersedes TB 11-6625-2384-35, 2 August 1978, including all changes.
1
TB 9-6625-2176-35
SECTION I
IDENTIFICATION AND DESCRIPTION
1. Test Instrument Identification. This bulletin
provides instructions for the calibration of Constant
Amplitude Signal Generator, AN/USM-272 and a. Forms, records, and reports required for
Tektronix, Type 191. The manufacturer's manual and calibration personnel at all levels are prescribed by TB
TM 116625-2384-15 were used as the prime data 750-25.
sources in compiling these instructions. The equipment b. Adjustments to be reported are designated (R)
being calibrated will be referred to as the TI (test at the end of the sentence in which they appear. When
instrument) throughout this bulletin. adjustments are in tables, the (R) follows the
designated adjustment. Report only those adjustments
made and designated with (R).
a. Model Variations. None.
b. Time and Technique. The time required for 3. Calibration Description. TI parameters and
this calibration is approximately 4 hours, using the dc performance specifications which pertain to this
and low frequency technique. calibration are listed in table 1.
2. Forms, Records, and Reports
Table 1. Calibration Description
Test instrument Performance
parameters specifications
Amplitude (at 50 kHz into Range: 0.5 to 5 V
50W load) Accuracy: