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NI PXIe-5601 Calibration Procedure
5.
Connect the NI 5601 IF OUT connector to power sensor B or to the spectrum analyzer
input. To choose which connection to make, refer to the following conditions:
•
Use the spectrum analyzer with the 3.5 mm-to-3.5 mm cable for RF frequencies
≤
120 MHz.
•
Use power sensor B with the SMA (m)-to-SMA (f) right-angle adapter for
RF frequencies
≥
120 MHz.
6.
Create a new session for the NI 5601 using the niRFSA Initialize With Options VI or the
niRFSA_initWithOptions
function. Set the Driver Setup portion of the
option string
parameter to
DriverSetup=Digitizer:<external>
.
7.
Lock the NI PXI/PXIe-5652 to the Reference Clock used by the external test equipment.
Use the niRFSA Configure Ref Clock VI or the
niRFSA_ConfigureRefClock
function.
8.
Set the NI 5601 reference level according to Table 2 using the niRFSA Configure
Reference Level VI or the
niRFSA_ConfigureReferenceLevel
function.
9.
Set the NI 5601 center frequency according to Table 3 and set the span according to
Table 2. Use the Center Span instance of the niRFSA Configure Spectrum Frequency VI or
the
niRFSA_ConfigureSpectrumFrequencyCenterSpan
function.
10. Commit the settings to hardware using the niRFSA Initiate VI or the
niRFSA_Initiate
function.
Table 2.
NI 5601 Settings (All Frequencies)
Parameter
Value
Reference Level
-60 dBm to 15 dBm, 5 dB steps
Span
5 MHz
Table 3.
NI 5601 Center Frequency
Beginning (MHz)
Ending (MHz)
Step (MHz)
10
100
10
200
300
100
330
—
—
400
6,400
200
6,590
—
—
