NI PXI-5663 Calibration Procedure
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© National Instruments
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17
LO Output Power Verification
Table 10 shows the test limits.
1.
Disconnect the NI 5652 from the NI 5601 if it is connected.
2.
Connect the RF source to the power splitter input through the 3.5 mm-to-3.5 mm cable.
3.
Connect the power splitter reference output to power sensor A.
4.
Connect the other power splitter output to the NI 5663 LO IN connector through the
3.5 mm (m) to 3.5 mm (m) adapter.
5.
Connect a 50
Ω
terminator to the NI 5652 RF OUT connector.
6.
Connect power sensor B to the NI 5663 LO OUT connector through the SMA to SMA
right-angle adapter. Figure 5 shows the completed equipment setup.
Figure 5.
LO Output Power Equipment Setup
7.
Create a new session for the NI 5663 using the niRFSA Initialize VI or the
niRFSA_init
function.
1
RF Source
2
50
Ω
Terminator
3
Power Splitter
4
Power Sensor A
5
Power Meter
6
Power Meter Channel A
7
Power Meter Channel B
8
Power Sensor B
1
ACCESS
ACTIVE
CLK IN
CLK OUT
PFI 1
ESD
SENSITIVE
TTL
6.3 Vp-p
MAX
2 Vp-p
NOM
+20 dBm MAX
50
Ω
50
Ω
50
Ω
NI PXIe-5622
16-Bit IF Digitizer
IF IN
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
2
6
7
3
8
4