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NI PXI-5663 Calibration Procedure
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© National Instruments
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6.
Set the NI 5663 for a resolution bandwidth according to Table 6 using the niRFSA Configure
Resolution Bandwidth VI or the
niRFSA_ConfigureResolutionBandwidth
function.
7.
Set the NI 5663 reference level according to Table 6 using the niRFSA Configure
Reference Level VI or the
niRFSA_ConfigureReferenceLevel
function.
8.
Set the NI-RFSA Attenuation (dB) property or the
NIRFSA_ATTR_ATTENUATION
attribute to 0.
9.
Set the NI 5663 center frequency according to Table 7 and span according to Table 6 using
the Center Span instance of the niRFSA Configure Spectrum Frequency VI or the
niRFSA_ConfigureSpectrumFrequencyCenterSpan
function.
10. Use the niRFSA Property Node to set the following properties:
•
Spectrum Averaging Mode to
RMS Averaging
•
Spectrum Number of Averages to
20
•
Spectrum Resolution Bandwidth Type to
ENBW
•
Spectrum Units to
Volts Squared
Table 6.
NI 5663 Settings
Frequency
Range
RF
Attenuation
Reference
Level
Span
Resolution
Bandwidth
10 MHz to <30 MHz
0 dB
-10 dBm
5 MHz
3 kHz
30 MHz to 6,600 MHz
0 dB
-50 dBm
5 MHz
2 kHz
Table 7.
RF Frequencies
Start (MHz)
Stop (MHz)
Step (MHz)
10
30
10
40
80
20
300
1,100
100
1,300
1,900
100
2,100
2,300
100
2,500
3,200
100
3,400
3,900
100
4,100
5,700
100
5,900
6,400
100
6,590
—
—
Note
: RF frequencies are selected to avoid false results from spurious responses.