63
Keysight M9391A PXIe Signal Analyzer & M9381A PXIe Vector Signal Generator 1 MHz to 3 GHz or 6 GHz
1.
2.
unlock condition can correct the problem. This is done by either correcting the
frequency or by setting the reference back to internal, so that a subsequent
instance will not take control of the reference module unintentionally.
If you set the frequency for the external reference in one configuration, that
value is not reflected in the other configurations sharing the reference. For
example, if you set the external reference frequency to 8 MHz in the M9381A
SFP, the M9391A SFP will still show the default value of 10 MHz.
The M9300A PXIe Frequency Reference can also be shared among multiple
measurement applications, such as the Keysight 89600 VSA software. The
M9300A module must be initialized before use, so including it in all
configurations enables applications to be started in any order. However, when
sharing a module the user interface of some applications may not reflect
M9300A settings made by other applications. For example, the 89600 VSA
software can control the M9300A module internal/external setting, but the
changes made by other applications will not be reflected in the 89600 VSA
software.
FPGA updates are not allowed on a Keysight M9300A PXIe Frequency
Reference while it is being shared. To perform M9300A FPGA updates, reserve
the frequency reference.
Reserving the Reference for a Configuration
If you are running a test in the background with a certain M9300A setting and then
connect a hardware configuration 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 control of the
reference module unintentionally:
On the SFP Connect to Instrument screen, click the
control to
Advanced
open the
dialog.
Options:
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:
