Keysight Technologies Option 503 Service Manual page 224

Front End Control Troubleshooting
A15 Front End Control Assembly Troubleshooting
Verifying Option ALV
Equipment needed:
Signal source settings:
Press the following keys on the analyzer:
Mode, Spectrum Analyzer, Mode Preset, FREQ Channel, and set the center
frequency to 1 GHz. Press Span, Zero Span, Input/Output, More, Output
Config, Aux IF Out, Fast Log Video.
Connect the rear panel Aux IF Out of the signal analyzer to a voltmeter set to
measure DC volts.
Verify that signal level appears on the analyzer screen positioned 1 division
below top graticule line.
Voltmeter should measure approximately 1.4 Vdc.
Reduce source output power to −20 dBm. Signal should now appear one
division lower, and voltmeter should measure approximately 1.2 VDC.
Reduce source output power to −30 dBm. Signal should now appear one
division lower, and voltmeter should measure approximately 1.0 VDC.
224
Volt meter
Adapters and cables to connect the volt meter to the Aux IF Out SMA
connector on the spectrum analyzer rear panel.
Signal source
Frequency: 1 GHz (CW)
Amplitude: −10 dBm
N9030A PXA Signal Analyzer Service Guide