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Diagnostics
Verifying Channel 1 LO outputs in a 2-channel RF system
Verifying Channel 1 LO outputs in a 2-channel RF
system
Perform the following procedures to verify the channel 1 LO output on an E2730
or E2731 module in a 2-channel analyzer. This test requires a spectrum analyzer
and a power meter. See
To verify Channel 1 LO outputs in a 2-channel RF system, 1st
LO:
1. Disconnect the cable connected to E273x 1st LO In/Out.
2. Connect Channel 1 1st LO In/Out to the spectrum analyzer RF Input.
3. If it is not already running, start the Vector Signal Analyzer by double clicking
the icon or clicking Start > (All) Programs > Agilent 89600 VSA > Vector
Signal Analyzer.
4. Set up the 89600 Vector Signal Analyzer:
a. Click File > Preset > Preset Setup.
b. Click Input > Channels > 2 Channels.
5. Set up the spectrum analyzer:
a. Preset.
b. Set the reference level to 12 dBm.
c. Set the span to 100 MHz.
6. For each frequency listed below verify that the amplitude is < 6.5 dBm. If the
signal level is marginal, verify with a power meter.
89600 center frequency
36 MHz
1 GHz
2.7 GHz
If any reading is incorrect then the E273x is most likely faulty.
250
"Recommended Test Equipment" (page
Spectrum analyzer center frequency
3.8175 GHz
4.7825 GHz
6.4825 GHz
224).
Chapter 16
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Troubleshooting
