Functional Chec
k
AutoZero
The host instrument includes a feature that nulls the DC offset at the output of the probe. To initiate the AutoZero routine, do
the following:
1. Allow the probe and oscilloscope to warm up for 20 minutes.
2. Press the MENU button on the probe to display the Probe Setup screen on the oscilloscope.
Figure 2: Probe Setup screen
3. Conne
ct the probe inputs together with the hook tips.
4. Press
AutoZero on the Probe Setup screen to initiate the AutoZero routine.
If th
e AutoZero routine does not yield sufficient results, use the DC Offset Zero procedure below.
DC Offset Zero
The offset stored through this feature is retained in the probe between probe power cycles. To set the probe DC offset to
0 V, do the following:
1. Set the oscilloscope offset for the probe channel to 0 volts.
2. Connect the probe inputs together with the hook tips.
3. Press and hold the probe BANDWIDTH LIMIT and RANGE buttons until the OVERRANGE LED on the probe begins
flashing, and then quickly release the buttons (about 2 seconds).
THDP0100/0200 & TMDP 0200 High Voltage Differential P robes Instruction Manual 20
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