User manual

ZD Series Differential Probes
ZDSERIES-GSM-REVA
24
Functional Check
The functional check will verify the basic operation of the probe functions.
It is recommended that the Functional Check be performed prior to the Performance
Verification Procedure.
1. Return to the factory default settings by:
a. Selecting File, Recall Setup... from the menu bar.
b. Then touching the Recall Default button.
2. Touch the C1 trace label to open the C1 Vertical Adjust dialog.
3. Verify that the probe sensed (ZD Series) is displayed as a dialog tab.
Verification Procedure
A. Output Zero Voltage
1. Connect the appropriate calibration fixture to the output of the probe to be tested
(shown in the following figure).
2. Provide power to the probe by connecting the ProLink-CF01 to any input of a
WavePro (any model) or WaveMaster (any model) oscilloscope.
3. No signal input connection to the oscilloscope is required for the Output Zero test.
4. Connect one end of a BNC cable to the female BNC connector on the probe end of
the ProBus extender cable. Connect the precision 50 Ω terminator to the other end
of the BNC cable.
5. Connect the Precision 50 Ω Terminator, using another BNC cable, to the free end of
the BNC Tee.
6. Set the DMM to DC volts.
7. Connect the Precision 50 Ω Terminator to the DMM input.
8. After a warm-up time of at least 20 minutes, measure the output voltage and record
the result as Output Voltage on the Test Record.
9. Initiate an AutoZero
10. Wait an additional 15 minutes, then record the DMM reading to 1 mV resolution in
the Test Record as Output Voltage after AutoZero.
11. Take the difference of the two readings recorded steps 8 and 10 (previous)
12. Record the result as Output Zero on the Test Record.
13. Verify the absolute value of Output Zero is less than 10 mV.