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Alignments
After the system has been cabled and shared synthesizer functionality has been
enabled, you can run the LO Level Alignments to adjust the signal level from a
shared M9301A Synthesizer module to offset the effects of additional loss from non-
standard cabling, additional gain from LO Distribution Network, and temperature
variation. You must first run the alignment on the master PXIe VSG or VSA, then on
each slave instrument. Running the LO Level Alignments is only required on
systems using the LO Distribution Network.
From the PXIe VSG's soft front panel, select Utilities > LO Level Alignment > Align...
From the PXIe VSA's soft front panel, select Utilities > Alignments > LO Level > All
States.
For more information, refer to the Appendix - Using LO Distribution Network in
Multi-Channel Systems
Sharing the M9300A Frequency Reference
Sharing the M9300A Frequency Reference
The M9300A PXIe Frequency Reference can be shared by multiple instruments,
such as all the M9381A PXIe Vector Signal Generators and M9391A PXIe Vector
Signal Analyzers in your chassis. You can also synchronize multiple chassis to
ensure that the instruments initialize with aligned clocks—see
Multiple Chassis
If you connect to a hardware configuration that includes a currently connected
M9300A (either independently or as part of another hardware configuration) the
latest instance of the SFP will take control of the M9300A. You will see no warning
or error message.
Keysight M9391A PXIe Signal Analyzer & M9381A PXIe Vector Signal Generator 1 MHz to 3 GHz or 6 GHz
string masterOptions =
"DriverSetup=ShareSynthesizerVisaSession=true";
string slaveOptions =
"DriverSetup=ShareSynthesizerVisaSession=true,
SynthesizerRole=slave,SynthesizerOutputPort=1b";
IAgM938xEx2 driver1 =
IAgM938xEx2 driver2 =
driver1.Initialize( resources, idquery, reset,
masterOptions);
driver2.Initialize( resources, idquery, reset,
slaveOptions);
in the
.
While the M9300A module is being shared, any of the configurations that share
this reference can control it fully, including setting the reference to use an
external frequency reference source. If the external frequency reference setting
does not match that of the supplied frequency, the reference will be unlocked,
as expected. However, only the instance of the SFP that creates the reference
new
AgM938xClass();
new
AgM938xClass();
Keysight M9391A and M9381A Programming Guide
.
Synchronizing
62
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