20
|
ni.com
|
NI PXIe-5601 Calibration Procedure
5.
Connect power sensor B to the NI 5601 LO OUT connector through the
SMA (m)-to-SMA (f) right angle adapter. Figure 6 shows the completed equipment setup.
Figure 6.
LO Output Equipment Connections
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 center frequency according to Table 12 using the Center Span instance of
the niRFSA Configure Spectrum Frequency VI or the
niRFSA_ConfigureSpectrumFrequencyCenterSpan
function. Set the
span
parameter to 100 Hz.
1
RF Source
2
Power Splitter
3
Power Sensor A
4
LO Source
5
Power Meter
6
Power Meter Channel A
7
Power Meter Channel B
8
Power Sensor B
9
Right-Angle Adapter
10 50
Ω
Terminator
11 Adapter
Table 12.
NI 5601 Center Frequency
Start (MHz)
Stop (MHz)
Step (MHz)
110
6,510
100
6,600
—
—
0 dBm NOM
RF IN
IF OUT
LO IN
LO OUT
10 MHz – 6.6 GHz
ACCESS
ACTIVE
ALL PORTS
±5 VDC MAX
50
Ω
0 dBm NOM
+20 dBm MAX
+20 dBm MAX
+20 dBm MAX
[+30 dBm MAX
w/Attenuation]
RF Downconverter
NI PXIe-5601
5
1
4
11
9
3
2
10
8
6
7
