122 Keysight CXG, EXG, and MXG X-Series Signal Generators Service Guide
Service and Utility Menus
Utility Service Menu
—IQ Skew Calibration
—IQ Internal Channel Correction Fine Calibration
—IQ Internal Channel Correction Calibration PM
These adjustments are built into the instrument calibration and test
harness. It will take approximately 1
¼ hours for these adjustments to
complete, depending on the power meter/sensor used. Once this routine is
started it cannot be paused, only aborted. If aborted, it can only be started
again from the beginning.
The IQ Skew Calibration will require that a spectrum analyzer be connected
to the instrument output as well as be controlled by the instrument. This
can be connected to the instrument for control either via Sockets or VXI-11.
The spectrum analyzer must be either a PSA series or an N9030A PXA. The
maximum tune frequency of the spectrum analyzer used must be at least as
high as the instrument being serviced. Be sure to configure and test the
communication with the spectrum analyzer prior to executing this routine.
For the last adjustment in this routine a power meter that can be controlled
by the instrument is required. This can be connected to the instrument
either via Sockets, VXI-11, or USB. However, the type of power
meter/sensor used can have a large effect on the amount of time the
adjustment will take to complete. Because of this, the recommended
connection type is USB. When selecting a power meter/sensor to use for
this adjustment the following parameters need to be considered:
Frequency Range: 10 MHz to 6 GHz
Power Level: -70 to +20 dBm
While there may be other sensors that meet the required parameters, the
recommended USB power sensors are shown in Table 5-2. When using one
of these recommended USB power sensors it will take approximately 1¼
hour for them all to complete.
Factory Calibration
This routine will run the following adjustments:
—IQ Calibration
— IQ Internal Channel Correction Calibration PM
When connecting the signal source RF output to the spectrum analyzer RF
input be sure to also connect the spectrum analyzer reference output to
the signal source reference input, as per the on screen instructions. If the
reference is not connected the IQ Skew Calibration will fail.
To Next Page
Loading...
Need help?
General
