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Front End Control Troubleshooting
A15 Front End Control Assembly Troubleshooting
Verifying Input Attenuator A, Input Attenuator B, Low Band Switch
Logic and Power Supplies
NOTE 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.
1. Turn off the instrument.
2. Connect the E4410-60115 RF Front End Troubleshooting board to the A15
Front End Control Assembly as shown in Figure 5-3 and Figure 5-4.
Figure 5-3 RF Front End Troubleshooting Board
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