DEPARTMENT OF THE ARMY TECHNICAL BULLETIN

TB 11-6625-2841-35

DEPARTMENT

THE

ARMY

TECHNICAL

BULLETIN

CALIBRATION PROCEDURE FOR

SIGNAL GENERATOR

POLARAD MODEL 1709

Headquarters, Department of the Army, Washington, D.C.

17 May 1978

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 and Blank Forms) should be mailed direct to

Commander, US Army Communications Electronics Materiel Readiness Command, ATTN:

DRSELMA-Q, Fort Monmouth, NH 07703. A reply will be furnished direct to you.

Paragraph

Page

Section

IDENTIFICATION AND DESCRIPTION

Test instrument identification ..................................................................................1

Calibration data card, DA Form 2416 .....................................................................2

Calibration description.............................................................................................3

II.

EQUIPMENT REQUIREMENTS

Equipment required.................................................................................................4

Accessories required ..............................................................................................5

III.

PRELIMINARY OPERATIONS

Preliminary instructions ...........................................................................................6

Equipment setup .....................................................................................................7

IV.

CALIBRATION PROCESS

Frequency and stability ...........................................................................................8

Power output ...........................................................................................................9

Square wave symmetry...........................................................................................10

Attenuation ..............................................................................................................11

Power supply...........................................................................................................12

Final procedure .......................................................................................................13

SECTION I

IDENTIFICATION AND DESCRIPTION

b. Time and Technique. The time required for

Test Instrument Identification.

This bulletin

this calibration is approximately 5 hours, using dc (direct

provides instructions for the calibration of Signal

current) and low frequency, and microwave techniques.

Generator, Polarad Model 1709. The manufacturer's

instruction manual was used as the prime data source in

Calibration Data Card, (DA Form 2418). a C

compiling these instructions. The equipment being

calibrated will be referred to as the TI (test instrument)

Forms records, and reports required for calibration

throughout this bulletin.

personnel at all levels are prescribed by TM 38-750. DA

Form 2416 must be annotated in accordance with TM

a. Model Variations. None.

38-750 for each calibration performed.