Keysight M9391A PXIe Signal Analyzer & M9381A PXIe Vector Signal Generator 1 MHz to 3 GHz or 6 GHz
100
2.
Shared LO VSA - For this type of M9391 multi-channel VSA, all channels
must share the same Synthesizer module.
When sharing a synthesizer module in a single chassis configuration without
the V2802A LO Distribution Network, the shared synthesizer outputs are
assigned as the following: 1A to Channel 1, 1B to Channel 2, 2A to Channel 3
and 2B to Channel 4. This configuration supports VSA with 2, 3, or 4 channels.
With this configuration, the associated LO cable connection must match that of
the channel assignment.
When sharing a synthesizer module via the V2802A LO Distribution Network,
synthesizer output 1A is assigned to all channels in the configuration. This
configuration supports VSA with 2, 3, 4, 5, 6, 7, or 8 channels spaning two
chassis. With this configuration, all LO connections from the shared synthesizer
to the downconverters must go through the V2802A following the associated
channel assignment using the cable kit.
To utilize the Keysight 89600 VSA software measurement capabilities using the
M9391A Vector Signal Analyzer hardware configuration you've just created, you
must first connect to the hardware configuration from the 89600 VSA software by
selecting it from the pulldown list of configured hardware.
The minimum required version of Keysight 89600 VSA software is 16.01.254.0.
However, if you are using more than one chassis to configure multiple
channels, then the minimum required version is 19.0. You can find this online at
.
As a best practice, after setting up an M9391A measurement, perform a
Disconnect/Restart (
and then
). If there is an
Control > Disconnect
Restart
unlocked Frequency Reference or Digitizer 100 MHz clock missing condition,
the M9214A Digitizer status LED will turn to Red and the INT REF indicator at
the bottom of the display will indicate "UNLOCKED" or "Waiting for Frequency
Reference Lock". At this point, troubleshoot the instrument cabling. Perform a
Disconnect/Restart again to verify that the frequency reference is present.
Whether the problem is a broken 100 MHz clock path or an invalid External
Reference (either not present or mismatched frequency), the reference status
and measurement status messages are the same - "UNLOCKED" reference and
"Waiting for frequency reference" measurement status. However, if the external
reference signal (not the 100 MHz clock) is invalid, as soon as the signal
becomes valid, measurement will resume; whereas in the 100 MHz clock signal
case, you must
from the hardware and then reconnect (
) to
Disconnect
Restart
start the measurement again.
Keysight 89600 VSA Software For Multi-Channel M9391A VSA in
Two Chassis
Keysight 89600 VSA versions 19.0 and higher support configuration of multiple
M9391A channels distributed across two chassis. The following are the
prerequisites:
