Keysight E6680A - Page 380

3 IQ Analyzer (Basic) Mode
3.2 IQ Waveform Measurement
Connecting an M8131A as an External Digitizer
The M8131A Digitizer is a 2-slot module that plugs into a Keysight AXIe chassis
(M9502A or M9505A). In order to connect the Digitizer, the instrument must
connect to the PCIe or USB3 port of the AXIe chassis. USB3 connection is slower,
but easier to use, and is the only option for N9041B.
To connect an M8131A for External Digitizer Control (EDC):
1 Establish PCIe or USB connection between AXIe chassis and Signal Analyzer
IMPORTANT
When using a PCIe connection, it is critical that the instrument and the AXIe
chassis are both powered down before making the connection. Once
connected, power up only the AXIe chassis and wait for the LED at the
bottom right front to turn green. Then , power up the instrument. Failure to
follow this power-up sequence may result in system instability. Turning off
the AXIe chassis or unplugging the PCIe cable while the instrument is
running may result in system instability
2 For USB connection, you can connect at any time before starting the Signal Analyzer
software
3 Make sure latest version of M8131A SFP is installed on Signal Analyzer (available at
Keysight.com)
4 Connect the input signal to the Input connector of your instrument:
–
For N9041B, input signal must be connected to RF Input 2 as shown below
–
For N9042B, connect to RF In, however if V3050A is connected, use the connector from
V3050A
5 Connect the Ext IF Out connector on the instrument to the Channel 1 input of the Digitizer:
–
For N9041B, this is located on the rear upper left of the instrument
–
For N9042B, this is located on the lower left of the front panel
6 For best frequency accuracy, connect the 10MHz reference out of the instrument to the
10MHz reference in of the oscilloscope
IQ Analyzer Mode User's &Programmer's Reference 380