Tektronix P6249, Instruction Manual

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Troubleshooting
P6249 4 GHz 5X Active Probe Instruction Manual
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Table 9: Troubleshooting guide (Cont.)
Symptom Action Result Checks
No Offset Adjust
(Signal present) Go to
Probe Power
row
Probe power OK Continue checks
Check variation of
offset input from host
instrument. See
Figure 21. Signal
should vary between
+1 V and --1 V. Offset input OK
Offset input bad
Replace probe.
Check TEKPROBE
interface pins on the
compensation box.
See page 47.
Check TEKPROBE
interface on host
instrument. (Try an
adjacent channel.)
Repair host
instrument
Probe Power Check the power
test points in the
compensation box.
See Figure 21. Power OK Continue checks.
Power bad Check TEKPROBE
interface pins on the
compensation box.
See page 47.
Check TEKPROBE
interface on host
instrument. (Try an
adjacent channel.)
Repair host
instrument