Agilent N5161A/62A/81A/82A/83A MXG Signal Generators Service Guide
Troubleshooting
No Output Power or Output Power is Unleveled (N5183A)
1-45
•Press More > Step Dwell > 2 > msec.
•Press
Return > Return > Sweep > Freq Off On to On.
d. Press
RF On/Off to On.
e. Press
AMPTD > ALC Off On to Off.
f. Press
AMPTD > <maximum settable power> > dBm.
5. Let the signal generator sweep until the spectrum analyzer displays a sufficient number of points to provide a good representation of the
power performance across the range of frequencies in the sweep.
6. Using the marker feature on the spectrum analyzer, measure the lowest power level displayed for sweep points between 100 kHz and
3.1999 GHz, and record the lowest power reading.
7. Using the spectrum analyzer, measure the lowest power level at the attenuator output.
• If the lowest power level is less than the specified power shown in the maximum output power section of the N5183A Data Sheet:
a. Replace the A7 Micro Deck.
b. Go to Chapter 4, "Post-Repair Procedures and Performance Verification".
• If the lowest power level is greater than the specified power level shown in the maximum output power section of the N5183A Data
Sheet:
a. Reconnect the cable to the attenuator.
b. Disconnect the cable from the RF output connector.
c. Check the loss through the cable.
d. If the cable is bad, replace the cable.
e. If the cable is good, reconnect the cable to the RF output connector.
f. Measure the loss through the RF output connector.
g. If the RF connector is bad, replace the connector.
h. If any parts are replaced, go to Chapter 4, "Post-Repair Procedures and Performance Verification".
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