Keysight M9380A, Startup Manual

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M9380A Troubleshooting
M9300A PXIe Frequency Reference Troubleshooting
Start the soft front panel (SFP) self test by selecting Utility > Self Test > Run Self Test. Once completed, a dia-
log box appears and reports whether the MMI passed or failed Self Test.
Please refer to the following table for recommended hardware. Additionally, a high quality flexible 3.5 mm
cable is required, plus adapters to connect the PSG (precision signal generator) and signal analyzer.
Hardware Description Critical parameters
Keysight N9020A Option 508 or N9030A Option 508 or E44454A Signal Analyzer 1 MHz to 6 GHz
Keysight N5181A Source or Function Generator 1 MHz to 110 MHz,0 to 10 dBm
Ref In Connector
1. On the M9380A SFP, select the “Reference” tab and under “External” select "Use External Reference.
The External Reference status indicator will show an "Unlocked" condition and the Status LED on
the M9300A front panel will turn red until an external reference is applied.
2. Connect an external source or function generator output to the M9300A “Ref In” connector.
3. Set the source/function generator to the first frequency and power level listed in the following table.
4. On the SFP (under External Reference) enter the external reference frequency in "Frequency".
5. Verify that the Reference is locked, using the SFP Reference Status indicators.
6. Set the source/function generator to each frequency and power level listed in the following table, and verify that the
reference locks.
SFP External Reference Frequency Source Frequency Source Power Level (sine)
1 MHz 1 MHz +10 dBm
1 MHz 1 MHz 0 dBm
10 MHz 10 MHz +10 dBm
10 MHz 10 MHz 0 dBm
100 MHz 100 MHz +10 dBm
100 MHz 100 MHz 0 dBm
110 MHz 110 MHz +10 dBm
110 MHz 110 MHz 0 dBm
Cable loss must be considered, when determining the results.
7. If the Reference remains locked at all frequencies and power levels, proceed to the next test.
8. If the Reference loses lock, the module is defective and should be repaired. See "Return an Instrument for Service"
on page 11 .
Keysight M9380A PXIe CW Source
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