Tektronix IsoVu TIVM Series, User Manual

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User service
Table 12: Problems and possible solutions (cont.)
Problem Remedy
Check the sensor tip cable continuity:
Sensor tip cable Resistance
IVTIP1X - 1X sensor tip cable ≤ 0.2 Ω
IVTIP5X - 5X sensor tip cable 200 Ω ± 2%
IVTIP10X - 10X sensor tip cable 453 Ω ± 2%
IVTIP25X - 25X sensor tip cable 1.21 k Ω ± 2%
IVTIP50X - 50X sensor tip cable 2.49 k Ω ± 2%
No signal detected; waveform is a
fl at line
• Measure the SMA input resistance of the Sensor Head using a 4-wire measurement; it
should be between 47.5 Ω and 52.5 Ω . If not, then the Sensor Head has been damaged
and needs to be returned to Tektronix for service.
Check the controller STATUS indicator for possible error conditions.
Apply a test signal directly to the SMA input of sensor head to determine if the problem is
the sensor tip cable or the sensor head.
Large DC offset in waveform Run SELF CAL.
Run AutoZero.
Set Input Offset to 0.0 V.
Cannot select between 1X and 2X
range (5000/7000/70000 Series
oscillocopes) When Auto Range is turned ON, the Range is selected automatically when the V/div setting is
changed. You cannot change the Range directly (the button will appear to not function).
Probe compensation fails
(7000/70000 Series oscilloscopes) This is a normal condition. You can ignore the failure.
Repack the measurement system for shipment
If you need to return the measurement system to Tektronix for repair, use the
original packaging. If this is unavailable or not
fi t for use, contact your Tektronix
representative to obtain new packaging.
When you return the measurement system to Tektronix, attach a tag showing the
following information:
Name of the product owner
Address of the owner
Instrument serial number
A description of problems encountered and/or service required
52 TIVM Series Measurement System User Manual