Pioneer SX-3800 manual

8 . 2 AM TUNER

1.Set up the test equipmentasFig. 8-3.

2.Set the FUNCTION switch to AM.

3.Tune the SX-3800'sdial pointer to 600kHz, and the AM SG (AM signal generator) output frequency to 600kHz, modulation frequency

of 400H2, 30% modulated and output level of 30dB- 100d8.

4.Adjust the core of T3 to obtain maximum out- put level(REC terminal).

5.Then tune to 1400kHzand alsoset the AM SG output frequency to 1400kH2.

6.This time adjust TC5 to obtain maximum out- put level(REC terminal).

?. Repeatsteps3 - 6 above.

8.Set the AIvf SG output level to about 30d8, adjust the coil along the bar antenna and T3 at 600kHz, and TC4 and TCb at 1400kH2, in the same manner as described in the above steps. This is the adjustment for optimum sensitivity across the frequency band, and minimum difference in sensitivity at different frequencies.

9.Reset the AM SG output frequency to

1400kH2, and also tune the SX-3800 to this frequency.

10.Adjust the coresof T4 and F7 to obtain maxi- mum output level(REC terminal).

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Oscilloscope

AC voltmeter

To RECterminal

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B a r a n t e n n ac o i l

AM signalgenerator

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To AM ANT 1kfl resistor

terminalFis .8 - 3

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