Agilent Technologies E8285A Manual page 78

Troubleshooting
Manual Troubleshooting Procedures
78
S:\agilent\e8285\ALR\Book\chapters\trouble.fm
To isolate the RF Source:
1. On the Test Set:
a. Press .
Preset
b. Press the key to access the CONFIGURE screen.
Config
• Set the RF Display field to Freq .
• Set the RF Offset field to Off .
c. Press the key (to go to the analog RF GENERATOR screen).
RF Gen
d. Set RF Gen Freq to 1800 MHz .
e. Set Amplitude to 0 dBm .
f. Set Output Port to Dupl .
2. On the external RF modulation analyzer or spectrum analyzer:
a. Set the tuning for the signal generated by the Test Set.
b. Connect the analyzer's input to the Test Set's DUPLEX OUT connector.
3. Set the Test Set's RF Gen Freq to 1800 MHz and then 900 MHz. For each
frequency, the external RF analyzer should read as follows:
a. Power should read approximately 0.001 W for each frequency.
b. Frequency should read 1800 and 900 MHz respectively.