INDEX - TM-11-6625-1633-450050

INDEX - TM-11-6625-1633-450049

Figure 5-5. Tube socket voltage and resistance diagram

TM-11-6625-1633-45 Signal Generator AN/URM-149 Manual
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TM 11-6625-1633-45

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Page

Removal and replacement of terminal boards ..................................................................................................

4-3

4-2

Replacement of 'coaxial relay K4 ....................................................................................................................

4-11

4-5

Replacement of frequency tracking springs .....................................................................................................

4-10

4-5

Replacement of frequency travel stop screws ..................................................................................................

4-9

4-4

Replacement of klystron .................................................................................................................................

5-7

5-2

Replacement of tape cam ................................................................................................................................

4-8

4-4

Removal and replacement of thermistor A4RT2 and A4RT3 ...........................................................................

4-5

4-3

Removal and replacement of tracking potentiometers A4R20 and A4R23 .......................................................

4-4

4-2

Rf noise level test ...........................................................................................................................................

5-13

5-7

Rf output frequency test . .............................................................................................................................. .

5-9

5-3

Rf output power test .......................................................................................................................................

5-10

5-4

Rf output resistance test .................................................................................................................................

5-11

5-6

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

1-1

Stage gain measurements ...............................................................................................................................

3-6

3-15

Test equipment and additional equipment required for depot maintenance ......................................................

5-6

5-2

Test equipment and special tools required for alignment .................................................................................

4-12

4-5

Tools, materials, and test equipment required .................................................................................................

3-2

3-1

Troubleshooting chart .....................................................................................................................................

3-5

3-13

Troubleshooting techniques ............................................................................................................................

3-3

3-1

Waveform analysis .........................................................................................................................................

3-7

3-15

Index-2

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