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NI PXIe-5694 Calibration Procedure
Verification
The performance verification procedures assume that adequate traceable uncertainties are
available for the calibration references.
Synchronizing the Components
Complete the following procedure to synchronize RF source 1, RF source 2, the spectrum
analyzer, and the PXI Express chassis to the same 10 MHz clock reference.
1.
Connect the 10 MHz clock reference output on the RF source 1 back panel to the 10 MHz
clock reference input on the RF source 2 back panel. Use a BNC (m)-to-BNC (m) cable.
2.
Connect the 10 MHz clock reference output on the RF source 2 back panel to the 10 MHz
clock reference input on the spectrum analyzer back panel. Use a BNC (m)-to-BNC (m)
cable.
3.
Configure the spectrum analyzer to use the external reference. On the Rohde & Schwarz
FSU26 analyzer, press the
Setup
button and then select
External Reference
.
4.
Connect the 10 MHz clock reference output on the spectrum analyzer back panel to the
10 MHz clock reference input on the PXI Express chassis back panel. Use a
BNC (m)-to-BNC (m) cable.
Configuring the Hardware
Complete the following procedure to configure the hardware for verification.
1.
Connect the 10 dB attenuator labeled
P1
to the low-frequency combiner connector
labeled
P1
.
2.
Connect the 10 dB attenuator labeled
P2
to the low-frequency combiner connector
labeled
P2
.
3.
Connect the signal generator labeled
Source 1
to the 10 dB attenuator labeled
P1
. Use the
SMA (m)-to-SMA (m) cable labeled
S1P
.
4.
Connect the signal generator labeled
Source 2
to the 10 dB attenuator labeled
P2
. Use the
SMA (m)-to-SMA (m) cable labeled
S2P
.
5.
Connect the low-frequency combiner common connector to the NI 5694 IF IN connector.
Use a 3.5 mm (m)-to-3.5 mm adapter.
Note
The 3.5 mm (m)-to-3.5 mm adapter is uncharacterized and represents an
uncertainty. This uncertainty is absorbed into the product specifications.
