Tektronix P6209, Instruction Manual

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Troubleshooting
P6209 4 GHz Probe Instruction Manual
53
Table 6: Troubleshooting guide
Symptom Checks Result Action
No signal out Check known signal
Go to
No Probe
Power
No signal.
Probe power OK.
Continue checks
Replace probe.
Distorted or
nonlinear signal Is the signal within
linear dynamic
range? See page 13. No Set channel vertical
offset to match signal
characteristic.
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 20. Offset
control voltage at pin
7 of J2 should vary
b1 V and
--1 V.
Offset input OK Replace probe.
No Probe Power Check the power
test points in the
compensation box.
See Figure 20. Power OK Continue checks.
Power bad Check for continuity
between the
TEKPROBE SMA
connector pins and
the test points in the
compensation box.
See Figures 20 and
21 on page 52.
Try an adjacent
channel.
Repair host
instrument