Keysight Technologies X Series Service Manual page 157

RF Section Troubleshooting (RF/Microwave Analyzers)
Troubleshooting
3. Front End Control Assembly Verification
Verifying the Front End Control Assembly requires the RF Front End
Troubleshooting board E4410-60115 or kit number N9020-60005. The kit
includes the troubleshooting board and associated interconnect cables. The
troubleshooting board and cables will help verify the control logic from this
assembly to Input Attenuator A, Input Attenuator B, Low Band Switch, YTF
Preselector, (Optional) Low Band Preamplifier, (Optional) Electronic Attenuator
and the RF Front End Assembly. The control logic should be verified going to
each assembly while the Front End Troubleshooting board is connected.
Even though the YTF Preselector is not used in low band (input frequencies < 3.59 GHz), it is
easy to test the switch control logic with the RF Front End Troubleshooting board installed in
case there is a high band problem. The Low Band Preamplifier (Option P03), and Electronic
Attenuator (Option EA3) logic should be tested if these options are installed in the analyzer.
— Turn off the instrument.
— Connect the E4410-60115 Front End Troubleshooting board to the A15
Figure 4-10 RF Front End Troubleshooting Board
Keysight N9010A EXA Service Guide
Front End Control Assembly as shown in Figure 4-10 and Figure 4-11.
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