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5. Log Amplifier Adjustments
3.66 Adjustments
23. Decrease the frequency synthesizer's output level 10 dB. Press
0 dBm, and adjust the frequency synthesizer's
)
LEVEL
output level for a DVM indication of + 1.00 k.001 Vdc.
24. Verify that attenuator is set at 10 dB. Decrease the frequency
synthesizer output level by 10 dB. Press
25. Adjust A4A3R83 LGlO for DVM indication of + 1.000 kO.010 V dc.
See Figure 3-34 location of adjustment. If unable to adjust LGlO
for proper indication, increase or decrease value of A4A3R54.
Refer to Table 3-3 for range of values.
26. Decrease the frequency synthesizer output level by 10 dB.
27. Key in
[
REFERENCE
28. Adjust A4A2R14 LG20 for DVM indication of + 1.000 fO.O1O
V dc. See Figure 3-34 for location of adjustment. If unable to
adjust LG20 for proper indication, increase or decrease value of
29. Press
to reenable IF Step Gains.
]
PRESET
[
REFERENCE LEVEL
-70 dB.
-60 dB.
]
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