National Instruments NI 9234, Процедура калибровки, Страница: 14 / 17

NI 9234 Calibration Procedure
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© National Instruments
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5. Connect the SMU to the channel you want to verify on the NI 9234. Refer to Figure 7 for
a connection diagram.
Figure 7. IEPE Compliance Voltage Verification Connections to the NI 9234
(IEPE Source Compliance Voltage Measurement)
6. Configure the SMU as a current source and set the voltage limit to the lowest appropriate
range to measure 24 V.
7. Measure IEPE Source compliance voltage.
a. Create and configure an AI voltage task on the NI 9234 according to Table 18.
b. Configure the AI voltage task timing according to Table 19.
c. Set the source current on the SMU to the recorded SMU
SourceCurrent
value.
d. Start the task.
e. Enable the SMU.
f. Record the SMU measurement SMU
Voltage
.
g. Disable the SMU.
h. Clear the task.
8. Compare the voltage measurement from the SMU to the minimum voltage limit of 19 V.
9. Repeat steps 1 through 8 for each channel.
If the IEPE Compliance Voltage verification procedure determines that the NI 9234 is outside of
the limits, refer to
Worldwide Support and Services
for assistance in returning the device to NI.
Table 18. IEPE Compliance Verification Equipment Configuration
Channel Configuration IEPE Excitation
AC Coupled with IEPE Enabled
Table 19.
NI 9234 Timing Configuration
Sample Mode Rate (kHz)
Continuous Samples 51.2
S MU
NI 92 3 4
+
AI
x
HI
LO
–