Tektronix IsoVu TIVM Series, User Manual

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User service
2. The oscilloscope display should be similar to the following fi gure.
Figure 36: Propagation delay measurement
Record the resulting delay measurement on the test record.
3. Disable the output of the Tek-DPG.
Troubleshooting and error conditions
The following table lists possible problems that you might encounter when taking
measurements with TIVM Series IsoVu measurement system. Use the table as a
quick troubleshooting reference before contacting Tektronix for service.
Table 12: Problems and possible solutions
Problem Remedy
The measurement system will not
power on; no indicators are on. Verify the TekVPI comp box is securely attached to the oscilloscope. Detach and then reattach
the comp box (using a different oscilloscope channel if necessary). If the condition persists,
return the system to Tektronix for service.
Controller STATUS indicator is
fl ashing green.
Detach and then reattach the comp box (using a different oscilloscope channel if necessary).
Do not force the comp box into the oscilloscope connector at an angle; connect it to the
oscilloscope with a
fi rm, horizontal force. If the condition persists, return the system to
Tektronix for service.
Controller STATUS indicator is
fl ashing red and yellow
This condition indicates a failure in the measurement system. Most often, a failure is detected
when the measurement system is
fi rst connected to the oscilloscope (while executing power-on
self tests). Detach and then reattach the comp box to the scope. If the condition persists,
return the system to Tektronix for service.
50 TIVM Series Measurement System User Manual