ADJUSTMENTS

MODEL 8559A

ADJUSTMENTS

5-28. FREQUENCY RESPONSE ADJUSTMENTS(Cont'd)

3 to 9 GHz Adjustment

39.Change synchronizer POLARITY to -.

40.Change spectrum analyzer AmplitudeScale to 10 dB/DIV and FREQUENCY BAND GHz to 3-9.

41.Adjust sweep oscillator for swept output from 3 to 9 GHz.

42.Adjust Tuning Voltage Circuit GAIN and OFFSET controls to phase-lock swept signal from 3 to 9 GHz. Refer to Figure 5-19c.

43.Change spectrum analyzer Amplitude Scale to 1 dB/DIV.

44.Adjust A12R83 V2 - (bias), A12R59 3A (offset), and A12R49 3B (tilt) for best overall flatness of trace from 3 to 9 GHz with trace approximately centered about the sixth horizontal graticule line on the CRT.

45.Total deviation of trace from 3 to 9 GHz should not exceed 3.0 dB.

9 to 15 GHz Adjustment

Change synchronizer POLARITY to +.

Change spectrum analyzer Amplitude Scale to 10 dB/DIV and FREQUENCY BAND GHz to 9 - 15.

Adjust sweep oscillator for swept output from 9 to 15 GHz.

Adjust Tuning Voltage Circuit GAIN and OFFSET controls to phase-lock swept signal from 9 to 15 GHz. Refer to Figure 5-19d.

Change spectrum analyzer Amplitude Scale to 1 dB/DIV.

Adjust A12R87 V2 + (bias), A12R60 4A (offset), and A12R51 4B (tilt) for best overall flatness of trace from 9 to 15 GHz with trace approximately centered about the sixth horizontal graticule line on the CRT.

Total deviation of trace from 9 to 15 GHz should not exceed 3.6 dB.

6 to 16 GHz Adjustment

53.Change synchronizer POLARITY to -.

54.Change spectrum analyzer Amplitude Scale to 10 dB/DIV and FREQUENCY BAND GHz to 6 - 15.

55.Adjust sweep oscillator for swept output from 6 to 15 GHz.

56.Adjust Thing Voltage Circuit GAIN and OFFSET controls to phase-lock swept signal from 6 to 15 GHz. Refer to Figure 5-19e.