up to greater than 10 V. If the ramp waveform is correct, check the A3A8 ramp converter. Otherwise check the ramp generator on A16.
Isolate Digital Storage Processor Section If HSWP Stays High (SWEEP LED ON)
With the sweep ramp disconnected from A3A8Jl and A3A8TPl jumpered to A3A8TP2, check RSHS output for the presence of 60 ns low pulses. (The logic probe of the HP 5005A Signature Analyzer can be used to detect them.) If present, check A3Al Trigger. If not, check the Digital Storage Processor Section.
See A3Al Trigger Troubleshooting Procedure
Note that the A3Al Trigger assembly also generates and controls the fast sweep timing (sweeps less than 10 ms).
12 Overall Troubleshooting