PXIe-5665 Calibration Procedure
|
© National Instruments
|
57
24. Disable the output of the RF source 1 and RF source 2.
Note
When disabled, the RF source 1 and RF source 2 output signals should be less
than -60 dBm.
25. Close the PXIe-5665 session.
If the third-order intermodulation distortion for frequencies
≤
700 MHz verification procedure
determines that the PXIe-5665 is outside its limits, refer to
Worldwide Support and Services
for
information about support resources or service requests.
Frequencies >700 MHz
1.
Connect RF source 1 and RF source 2 to the PXIe-5665 RF IN connector through the
anti-distortion test fixture as shown in Figure 21 and Figure 22.
Figure 21.
PXIe-5665 3.6 GHz VSA Third-Order Intermodulation (Frequencies >700 MHz)
Verification Equipment Setup
1
RF Source 1
2
RF Source 2
3
SMA (m)-to-SMA (m) cable
4
SMA (m)-to-SMA (m) cable
5
Anti-Distortion Test Fixture
6
SMA (m)-to-SMA (m) cable
OUT
NI PXIe-5653
Synthesizer
REF IN
10 MHz
5 V p-p MAX
REF OUT
10 MHz
1.5 V p-p MAX
REF OUT
100 MHz
1.5 V p-p MAX
LO3
800 MHz
LO2
4 GHz
LO1
3.2 GHz - 8.3 GHz
ESD
SENSITIVE
OUT
ALL PORTS
50
Ω
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
ESD
SENSITIVE
ACCESS
ACTIVE
OUT
IN
LO3
LO2
LO1
ALL PORTS
50
Ω
NI PXIe-5603
Downconverter 20 Hz - 3.6 GHz
RF IN
0 V DC, DC COUPLED
25 V DC MAX, AC COUPLED
+20 dBm MAX > 10 MHz
0 dBm MAX < 10 MHz
+15 dBm MAX
25 V DC MAX
+15 dBm MAX
0 V DC
IF OUT
+22 dBm MAX
0 V DC
J
J
J
J
J
J
K
K
RF
OUTPUT
RF
INPUT 1
NI-5665 ANTI-DISTORTION ET
166375A
RF
INPUT 2
6
1
5
2
4
3