Tektronix IsoVu TIVM Series, User Manual

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Operating information
Probe compensation
The DPO7000 and MSO/DPO70000 Series oscilloscopes have a Compensate
Probe feature accessible from the Probe Setup window. Pressing this button
always results in a failure because the input resistance of the TIVM sensor tips is
too low and cannot be driven by the calibrator output of the oscilloscope. The
accuracy of the TIVM system is still guaranteed on these oscilloscopes even
though the Compensate Probe feature fails.
Deskew
Each oscilloscope family has a unique way of allowing you to adjust the timing
relationship between signals acquired between different probes. Consult the user
manual or online help of the oscilloscope for speci
fi c directions needed to deskew
the probe. The 3 m and 10 m measurement systems have a propagation delay of
approximately 35 ns and 68 ns respectively. The actual propagation delay is
measured on each measurement system and is stored within each unit.
Input offset
The measurement system provides a user-adjustable, input referred offset voltage.
This allows you to view a portion of the signal that is off-screen. One of the
controls on the oscilloscope can be assigned this function.
The minimum/maximum offset is different for each sensor tip cable. It is the same
when the 1X or 2X Range is selected; it is also the same for all V/div settings.
Refer the following input offset table.
Table 7: Input offset
Sensor tip cable Input offset voltage
IVTIP1X ±2 V
IVTIP5X ±10 V
IVTIP10X ±20 V
IVTIP25X ±50 V
IVTIP50X ±100 V
TIVM Series Measurement System User Manual 21