NI PXIe-5624R Calibration Procedure
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© National Instruments
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15
12. Repeat steps 6 through 11, increasing the generator frequency by the value in the
Step Size
column, until you reach the value in the
Generator Stop Frequency (MHz)
column.
13. Repeat steps 5 through 12 for the remaining frequencies in the
NI 5624R Center
Frequency (MHz)
column in Table 3.
14. Compare the
absolute amplitude accuracy
values measured to the verification test limits in
the following table.
Updating Calibration Date and Time
This procedure updates the date and time of the last NI 5624R calibration in the NI 5624R flash
memory.
Successfully complete all required verifications or successfully complete reverification
following adjustment prior to updating the calibration date and time on the NI 5624R.
Complete the following steps to update the NI 5624R calibration date and time.
1.
Call
niIFDig Group A ExternalCal v1 Host.lvclass:Initialize
External Calibration.vi
. The default password is
NI
.
2.
Call
niIFDig ExternalCal v1 Host.lvclass:Write Ext Cal Date.vi
. Wire
in the current date and time.
3.
Call
niIFDig External Cal v1 Host.lvclass:Close External
Calibration.vi
. Set the
write calibration to hardware?
input to TRUE to store the
results.
Table 4.
Absolute Amplitude Accuracy Verification Limits
Frequency
As-Found Limit (dB)
As-Left Limit (dB)
25 MHz to 1 GHz
±0.25
±0.10
1 GHz to 1.975 GHz
±0.30
±0.15
