Adjustments
Offset Zero
This is the only procedure that applies to all of the probes and all serial numbers.
Adjustment notes.
For probes with serial numbers C199999 and below, Offset Zero i s the only adjustment that can be done to the probe.
For probes with serial numbers C020000 and above, Offset Zero is the only adjustment that can be done without
removing th
e back label.
The adjustm
ent for each range is independent and does not interact between the ranges.
Procedure.
1. Set the oscilloscope offset to 0 volts.
2. Connect the probe inputs together with the hook tips.
3. Pres
s and hold the probe BANDWIDTH LIMIT and RANGE buttons until the OVERRANGE LED on the probe flashes.
4. Rele
ase the buttons. T he OVERRANGE LED continues to flash, indicating that the digitally-controlled offset zero
adjustment is enabled.
5. Use the probe BANDWIDTH LIMIT and RANGE buttons to set the probe offset voltage as close to 0 V as possible, as
displayed on the oscilloscope. The BANDWIDTH LIMIT button decreases the offset voltage and the RANGE button
inc
reases it.
6. Pre
ss the AUDIBLE OVERRANGE button on the probe to store the adjusted offset value. The OVERRANGE LED stops
flashing to indicate that the offset value is stored and that the adjustment is disabled.
7. Select the remaining attenuation range and repeat steps 3 through 6.
43 THDP0100/0200 & TMDP0200 High Voltage Differential Probes Instruction Manual
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