TM 11-6625-2872-14&P

 

 

TABLE OF CONTENTS

 

 

 

 

 

Paragraph

Page

SECTION

0.

INTRODUCTION

 

 

 

 

Scope ......................................................................................................

0-1

0-1

 

 

Indexes of Publications . . . . ...............................................................

0-2

0-1

 

 

Maintenance Forms, Records, and

 

 

 

 

Reports .............................................................................................

0-3

0-1

 

 

Reporting Equipment Improvement

 

 

 

 

Recommendations (EIR)..........................................................................

0-4

0-1

 

 

Administrative Storage ............................................................................

0-5

0-1

 

 

Destruction of Army Electronics

 

 

 

 

Materiel .............................................................................................

0-6

0-1

I.GENERAL INFORMATION

 

Description ..............................................................................................

1-1

1

II.

INSTALLATION

 

 

 

Portable Case or Rack Mounting .............................................................

2-1

3

 

Installation in Sanborn Recording

 

 

 

Systems ............................................................................................

2-5

3

III.OPERATION

 

Operating Controls...................................................................................

3-1

3

 

Balancing ................................................................................................

3-9

4

 

Calibration ...............................................................................................

3-11

4

 

Alternate Calibration Procedure ...............................................................

3-12

4

 

Operation ................................................................................................

3-14

4

 

50 dB Span Operation .............................................................................

3-17

5

 

100 dB Span Operation ...........................................................................

3-21

5

 

Operation with Monitoring Instruments.....................................................

3-25

5

 

Simultaneous Recording and Monitoring

 

 

 

of 8808A Output ................................................................................

3-27

5

IV.

PRINCIPLES OF OPERATION

 

 

 

Output .....................................................................................................

4-1

6

 

Stage Description ....................................................................................

4-2

6

 

Signal Flow..............................................................................................

4-3

6

 

Dynamic Range .......................................................................................

4-4

6

 

Block Diagram Information ......................................................................

4-5

6

 

Detector Outputs .....................................................................................

4-6

6

 

DB SPAN Switch Circuit ..........................................................................

4-7

6

 

LOG ZERO Level Setting ........................................................................

4-8

6

V.REPLACEABLE PARTS

Introduction..............................................................................................

5-1

8

Ordering Information................................................................................

5-3

8

ii