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7. Adjust L4 to tnaximun deflection on oscillosc:ope.
8. Set signal generator to 28.0
rmz and an output giving approx.
1.5 Vpp on the oscilloscope.
9. Adjust L5 to maxinun deflection on oscilloscope.
10. Remove signal generator and resolder the scrap between [eminals
302-3 and 302-4.
7.10.4. Realigrment of 302 L6, 36.6 unz VCO:
Control setcing8:
SUPPLY switch:
STANI) BY
1. Connect oscilloscope to IC5 pin 3.
2. Adjust L6 to symetry of the square wave (e.g. 50Z duty cycle).
7.10.5. Realigrment of 302 T2, 36.6 mz Tran§£omer.
Control settings: SUPPLY switch: STANI) BY
MODE Switch:
A3J.
1. Connect oscilloscope to Icl pin 1 and ground at pin 13.
2. Adjust T2 for maximum deflection on oscilloscope.
7.10.6. Realigrment o£ Level Setting Potentioneters
The level setting potentioneters control the RE drive voltage to the
transu]itter and is the[efore described in the transmitter nanual.
(The T 5002 tnanual paragraph 7-
).
7 .11.
Reali
erit of Control
A
Circuit and Tone Generators
Measuring equipment:
Frequency Counter having an accuracy better than 10-4 and a 8easiti-
vity of at least .o`.5V.
Extender Board
7.11.1. Realigruent of 234 Tl and 234 T2:
Control 9ettirigs: SUppl.Y switch: STArm BY
roDE switch:
TEST AIARI
1. Insert extender board.
2. Cormect frequency counter be[ueen te"inals 234-32c and 234-4c
ground) .
3. Cormect the adjuscnent teminalB narked 1 aaa 2 together.
4. I)epress and release AI.ARM START pushbuttoti.
5. Adjust 234 Tl utitil counter reads 2200 Hz ± 1 Hz.
6. Remove connection referred to ifl poiflc 3 above.
7. Connect the teminals narked 2 dad 3.
8. I)epress and release AIARM START buttoti.
9. Adjust 234 T2 .until counter reads 1300 Hz ± 1 Ez.
10. Retcove comectioti referred Co in poioc 7 above.
7-5
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