Keysight E6680A - Page 377

3 IQ Analyzer (Basic) Mode
3.2 IQ Waveform Measurement
The External path selection is only shown when Option EDC is installed. It is grayed-
out unless a valid Keysight oscilloscope is connected as an external digitizer.
Connecting an External Digitizer
Certain Keysight Oscilloscopes, including the M8131A Digitizer, can be connected
to the Signal Analyzer in order to obtain even wider IF bandwidths than are available
with the built-in Digitizers. This function is only available in the N9041B and
N9042B, and only when option EDC is installed.
If there is a valid USB/PCIe connection between the Signal Analyzer and the external
digitizer, the External selection is available; otherwise, it is grayed-out. Similarly, the
"Apply EDC Preset" on page 384 button will be available only if there is a valid
connection between the instrument and the oscilloscope; otherwise, it will be
grayed-out.
Note the following:
–
To use EDC in N9041B, you must use the RF Input 2 (RF2) port
–
To use EDC in N9042B with V3050A, you must use the RF External (Ext) port
–
The IF signal is sent from the instrument to the External Digitizer via External IF
Out. Thus, the EXT IF OUT port at the rear panel of the instrument needs to be
connected to Channel 1 of the External Digitizer. The cable must be connected
to Channel 1; not to any other channel port
Connecting an Oscilloscope as an External Digitizer
The following oscilloscopes are supported:
–
Keysight S-Series DSOS804A
–
Keysight S-Series with DSOS8GBW (8GHz bandwidth upgrade)
–
Keysight S-Series with DSOV134A
To connect one of these oscilloscopes for External Digitizer Control (EDC):
1 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
2 Connect the Ext IF Out connector on the instrument to the Channel 1 input of the
Oscilloscope:
–
For N9041B, this is located on the rear upper left of the instrument
377 IQ Analyzer Mode User's &Programmer's Reference