Keysight M9380A, Startup Manual

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Step 4: Install the Modules
If you are running a test in the background with a certain M9300A setting and then connect a hardware con-
figuration that also contains the same M9300A, you may alter the test setup that is already running.
If you would prefer to be keep the reference control with the first instance of
the hardware configuration so that a subsequent instance will not take con-
trol of the reference module unintentionally:
1. On the SFP Connect to Instrument screen, click the Advanced control to open the
Options: dialog.
2. Type the following string:
ShareReferenceVisaSession=0
This configuration will retain control of the M9300A if you try to
open a new configuration. If you connect a new configuration, that
includes the same M9300A, you will see the following error:
If an existing instance of the SFP is connected to the reference module in a shared (default) mode, and you
try to connect a second instance of the SFP to the same reference with
ShareRe-
ferenceVisaSession=0
Advanced Option, you will get the resource locked error shown above.
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Keysight M9380A PXIe CW Source