LIST OF ILLUSTRATIONS

TM 11-5805-424-15/NAVELEX 0967-220-9010/TO 31W2-2G-41

Paragraph

Page

Physical tests and inspection .............................................................................................

7-5

7-2

Data tests ..........................................................................................................................

7-6

7-3

Timing tests.......................................................................................................................

7-7

Alarm tests ........................................................................................................................

7-8

7-9

Summary of performance standards ..................................................................................

7-9

7-13

ADJUSTMENTS AND FINAL TESTING

General .............................................................................................................................

8-1

Crystal oscillator and oven assembly module.....................................................................

8-2

8-1

Adjustment of variable control oscillator (VCO) ..................................................................

8-2.1

8-2

Demodulator bias adjustment ............................................................................................

8-3

8-2

Alarm adjustments ............................................................................................................

8-4

8-2

Order-wire circuit adjustments ...........................................................................................

8-5

8-4

8.1

DEPOT OVERHAUL STANDARDS

Purpose.............................................................................................................................

8.1-1

Test facilities required........................................................................................................

8.1-2

8.1-1

Test requirements..............................................................................................................

8.1-3

8.1-1

Power supply tests ............................................................................................................

8.1-4

8.1-1

Input capacitance tests ......................................................................................................

8.1-5

8.1-3

Output impedance tests .....................................................................................................

8.1-6

8.1-3

Input impedance tests........................................................................................................

8.1-7

8.1-4

Input resistance test ..........................................................................................................

8.1-8

8.1-5

DELETED

APPENDIX A.

REFERENCES ...............................................................................................................................

A-1

APPENDIX B.

MAINTENANCE ALLOCATION

Section I.

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

B-1

II.

Maintenance allocation chart for MD-674(P)/G................................................................................

B-3

III.

Tool and test equipment requirements for MD-674(P)/G..................................................................

B-10

IV.

Remarks.........................................................................................................................................

B-11

APPENDIX C.

COMPONENTS OF END ITEM LIST

Section I.

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

C-1

II.

Components of end item.................................................................................................................

C-2

LIST OF ILLUSTRATIONS

Figure

No.

Title

Page

1-1

Modem, Low Speed Wire Line MD-674(P)/G....................................................................................................

1-0

1-2

Modem, Low Speed Wire Line MD-674{P)/G, Modem Subassembly MX-73(*)/G, and Clock Module Group......

1-4.5

OA-8072/G

1-3

Running Spares...............................................................................................................................................

1-5

1-4

Modem, Low Speed Wire Line MD-674(P)/G, Extended From Case .................................................................

1-5

Modem, Low Speed Wire Line MD-674(P)/G, Removed From Case, Top View, Less Modem Subassembly .....

1-6

MX-73(*)/G and Clock Module Group OA-8072/G

1-6

Modem, Low Speed Wire Line MD-674(P)/G, Removed From Case, Top View, With Modem Subassembly .....

1-7

MX-73(*)/G and Clock Module Group OA-8072/G Installed

1-7

Modem, Low Speed Wire Line MD-674(P)/G, Removed From Case, Bottom View ...........................................

1-8

Modem, Low Speed Wire Line MD-674(P)/G, Rear View, Less Access Cover...................................................

1-9

Single-Channel, Secure, Terminal Facilities, Block Diagram ............................................................................

1-10

Multiplex Terminal Facilities, Block Diagram ....................................................................................................

1-11

Single-Channel Repeater Facility, Block Diagram ............................................................................................

1-12

2-1

Typical Packaging Diagram .............................................................................................................................

2-2

Terminal Board Identification Diagram .............................................................................................................

2-3

Control Shelf, Controls and Test Jacks ............................................................................................................

2-4

Harness Card Strap Terminal Locations...........................................................................................................

2-4

2-5

Printed-Circuit Card Assembly Strap Terminal Locations .................................................................................

2-5

2-6

Plug-In Module of Modem Subassembly MX-7372/G, MX-7374/G. MX-7376/G, MX-7377/G, MX-7378/G, .......

2-9

MX-7380/G, MX-7381/G, MX-7382/G, MX-7384/G, or MX-7386/G

2-7

Plug-In Module of Modem Subassembly MX-7373/G, MX-7375/G, MX-7383/G, or MX-7385/G ........................

2-10

2-8

Plug-In Module of Modem Subassembly MX-7379/G .......................................................................................

2-11

3-1

Front Panel Controls and Indicators .................................................................................................................

3-1

5-1

Common Input Bistable Stages, Schematic Diagram and Logic Symbol...........................................................

5-5

5-2

Two-Input Bistable Stages, Schematic Diagram and Logic Symbol ..................................................................

5-6

5-3

(See fold-in listing)

5-4

Two-Input Bistable Stage, +6 Volt Clamped Output, Schematic Diagram and Logic Symbol.............................

5-7

Change 6 iii