6 Input/Output
6.2 Input
The calibration data is saved as soon as the port is calibrated and will survive power cycles. It is not
reset by any preset or restore data commands
State Saved No
Q-bar Probe Calibration Time (Remote Query Only)
Return the last date and time that the I/Q Probe Calibration was performed for a
specific port.
Remote
Command
:CALibration:IQ:PROBe:QBAR:TIME?
Example
:CAL:IQ:PROB:QBAR:TIME?
Notes Returns 6 integer values: year, month, day, hour, minute, second. When no calibration has been
performed, all values are 0. The value is specific to both the port and probe, so the value will change as
probes are connected or disconnected
Annunciation Guided Calibration, Probe Calibration, Last Calibration
6.2.22 I/Q Cable Calibrate
The I/Q cable calibration creates correction data for each of the front panel I/Q
ports. This calibration data is used whenever no probe specific calibration data is
available. It is important that all ports are calibrated using the same short BNC cable
so that the data is comparable from port to port.
The guided calibration (front panel only) will show connection diagrams and guide
you through the isolation calibration and calibrating each port. The calibration data
for each port is stored separately, so as soon as a port is calibrated that data is
saved and will be used. If you press "Exit" to exit the calibration process, the data for
the ports already completed will still be used. It is recommended that a calibration
be completed once started, or if exited, that it be properly done before the next use
of the I/Q ports. The "Next" button will perform the calibration for the current port
and then proceed to the next step in the calibration procedure. The "Back" button
will return to the prior port in the procedure. Both keys and dialog buttons are
supplied for ease of use. The dialog buttons are for mouse use and the softkeys for
front panel use.
The calibration can also be done via SCPI, but no connection diagrams will be
shown. You will have to make the correct connections before issuing each port
calibration command. Again, it is recommended that all ports be calibrated at the
same time.
The instrument state remains as it was prior to entering the calibration procedure
except while a port is actually being calibrated. Once a port is calibrated it returns to
the prior state. A port calibration is in process only from the time the "Next" button is
2394 Spectrum Analyzer Mode User's &Programmer's Reference
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