Agilent Technologies 8935 Series, Manual

Page: 68 / 343

Chapter 3 67
Troubleshooting
Functional Diagnostics (Step 2)
Figure 3-12 Functional Diagnostics Screen
RF Modules
The Average and TX power meters, RF analyzer, IF analyzer, DSP
analyzer, and spectrum analyzer are used to test the signal generator.
Both the internal and external paths of the RF/IO assembly are used in
the tests.
Analog Modulation
The demodulator in the RF analyzer, and the spectrum analyzer are
used to check the accuracy, distortion, and residuals of the FM and AM
frequencies. The counter is used to measure the audio frequency.
CDMA Loopback
CDMA Analyzer is used to measure Rho, Time Offset, Frequency Error,
and Carrier Feedthrough on a signal from the CDMA Generator.
Self Test
The power-up Self-Test Diagnostics are run. Refer to “Self-Test
Diagnostics (Step 1)” on page 50 .
Power Supplies
The different levels of the power supply are measured with the internal
voltmeter.
SERVICE MENU
1
2
3
4
5
Help
Exit
Functional Diagnostics
AF Diagnostics
RF Diagnostics
CDMA Diagnostics
Edit RF Diagnostic Limits
Periodic Calibration
IQ Calibration
Eb/No Calibration
=>
Move pointer to desired program using the
knob then press the knob. Press Help for
information on the tests. Press Exit to abort.
funcscrn.eps
SERVICE MENU Screen
1
2
3
4
5
Exit
Sev Menu
RF Modules
Analog Modulation
CDMA Loopback
Self Test
Power Supplies =>
Move the pointer to the desired test using the
knob then press the knob. Press Serv Menu to
go to the Service Menu, Exit key to abort.
Functional
Diagnostics
Screen