User`s guide

Agilent X-Series Signal Generators User’s Guide 211
Basic Digital Operation (Option 653/655/656/657)
I/Q Calibration
I/Q > I/Q Calibration
Available only when
Calibration type = User
DC optimizes the I/Q performance for the current
instrument settings, and typically completes in several
seconds. Changing any instrument setting after performing
a DC calibration voids the DC calibration and causes the
signal generator to revert to the user calibration data (or
factory-supplied calibration data, if no user calibration data
exists)
User provides a quicker calibration when a full calibration
is not required. You can limit the calibration by specifying
the calibration start and stop frequencies.
When you limit the calibration to less than the instrument’s
full frequency range, the factory−supplied calibration data
is used for the rest of the range. If the start and stop
frequencies are set to the same value, then the calibration
will be performed exactly at that frequency and the data will
be persisted in the bounding calibration array elements.
Information is retained through a preset or power cycle*.
Full takes approximately a minute, executing
measurements over the instrument’s entire frequency
range.
Information is retained through a preset or power cycle*.
*Caution:
To avoid the loss of data, GPIB settings, or current user
instrument states that have not been permanently saved to
non-volatile memory, the signal generator should always be
powered down either via the Instrument’s front panel power
button or the appropriate SCPI command. Signal
generators installed in rack systems and powered down
with the system rack power switch rather than the
instrument’s front panel switch display an Error -310 due to
the instrument not being powered down correctly.
Deletes any user–generated
calibration data and restores
the factory−supplied
calibration data.
Note
A DC calibration requires the following settings:
• I/Q: On
• Optimized Path: RF Output
• Source: Internal
For details on each key, use key help
as described on page 44.