National Instruments PXIe-5164, Руководство пользователя

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4. Compare the RMS noise to the appropriate Limit from the RMS Noise Verification table.
5. Repeat steps 2 through 4 for each configuration listed in the RMS Noise Verification table.
6. Connect the 50 Ω terminator to channel 1 of the PXIe-5164 and repeat steps 2 through 4
for each configuration listed in the
RMS Noise Verification table.
Adjustment
This section describes the steps needed to adjust the PXIe-5164 to meet published
specifications.
Adjusting the PXIe-5164
Before performing this procedure, complete the Test System Characterization procedures and
calculate the splitter balance and splitter loss of your power splitter. Ensure the channels of the
PXIe-5164 are not connected.
1.
Call the niHsai Group B External Cal API v1 Host.lvclass:Open Ext Cal Session VI to
obtain an external calibration session.
To perform an adjustment, you must specify the calibration password . By default, the
calibration password is
NI
.
2. Complete the Adjusting 1 MΩ Compensation Attenuator procedure on channel 0.
3. Complete the Adjusting 1 MΩ DC Reference procedure on channel 0.
4. Complete the Adjusting 50 Ω DC Reference procedure on channel 0.
5. Complete the Adjusting Timebase procedure on channel 0. This procedure only needs to
run on one channel.
6. Complete the Adjusting 1 MΩ Compensation Attenuator procedure on channel 1.
7. Complete the Adjusting 1 MΩ DC Reference procedure on channel 1.
8. Complete the Adjusting 50 Ω DC Reference procedure on channel 1.
9. Complete the Adjusting 50 Ω Passband Amplitude Flatness and Bandwidth procedure on
channel 0.
10. Complete the Adjusting 50 Ω Passband Amplitude Flatness and Bandwidth procedure on
channel 1.
11. Complete the Adjusting 1 MΩ Passband Amplitude Flatness and Bandwidth procedure on
channel 0.
12. Complete the Adjusting 1 MΩ Passband Amplitude Flatness and Bandwidth procedure on
channel 1.
13. Call the niHsai Group B External Cal API v1 Host.lvclass:Close Ext Cal Session VI with
the following settings to close the external calibration session:
action : Set this control to Commit to store the new calibration constants, adjustment time,
adjustment date, and adjustment temperature to nonvolatile memory of the oscilloscope.
If any errors occurred that were not corrected during any of the external adjustment steps,
or if you want to abort the operation, set this control to Cancel to discard the new
calibration constants without changing any of the calibration data stored in the
nonvolatile memory of the oscilloscope.
PXIe-5164 Calibration Procedure | © National Instruments | 43