I/Q Probe Setup - Keysight x-series User Reference Manual

4 Input/Output Functions
Input/Output
process only from the time the "Next" button is pressed until the next screen is shown. For SCPI, this
corresponds to the time from issuing the CAL:IQ:FLAT:I|IB|Q|QB command until the operation is complete.
For example, if the prior instrument state is Cal Out = Off, Input = I+jQ, and Differential = Off, then up until
the time the "Next" button is pressed the I Input and Q Input LEDs are on and the Cal Out, I-bar Input and
Q-bar Input LEDs are off. Once the "Next" button is pressed for the I port calibration, only the Cal Out and I
Input LEDs will be on and the others will be off. When the screen progresses to the next step ("Next" button
again enabled), the prior state is restored and only the I Input and Q Input LEDs are on (Cal Out is off again).
The last calibration date and time for each port will be displayed. Any calibrations that are more than a day
older than the most recent calibration will be displayed with the color amber.
Key Path
Initial S/W Revision

I/Q Probe Setup

The set of I/Q probe setup parameters will change based on the type of probe that is sensed. All probe
types have the Attenuation parameter, and all probe types can be calibrated. The remaining parameters
are only available for some probe types and will not be shown when not available. The probe type is
determined by and reported for only for the I and Q ports, never the I-bar or Q-bar ports. The menu title will
be "<ch>: <probe id>", where "<ch>" is either "I" or "Q" and "<probe id>" is the type of probe. For example,
for the I Probe setup with an Agilent 1130A probe connected to the I port, the title will be "I: 1130A".
Probe calibration data is stored for each probe type for each channel. When no probe is sensed, the probe
type "Unknown" is used, and this is also treated like a probe type with its own calibration data. When a
probe is changed, the calibration data for that probe type for that port is restored. An advisory message will
be displayed showing the new probe type and the calibration status. The calibration data is stored
permanently (survives a power cycle) and is not affected by a Preset or any of the Restore commands.
When the probe has EEPROM identification (most newer Agilent probes have this), the calibration data is
stored by probe serial number and port, so if you have two probes of the same type, the correct calibration
data will be used for each. For probes that do not have EEPROM identification, the calibration data is stored
by probe type and port and the instrument cannot distinguish between different probes of the same type. In
all cases (with or without EEPROM identification), the calibration data is port specific, so it will not follow a
specific probe from port to port if the probe is moved.
The "Unknown" probe type is used whenever no probe is sensed. When no calibration data exists for
"Unknown" the latest cable calibration data is used (see
Attenuation
The attenuation is part of the calibration data stored with the probe type and is initially the value that was
returned by the last calibration. You can modify this value and any changes will be stored with the
calibration data and will survive power cycles and presets. When a probe calibration is performed the
attenuation value will be overwritten by the calibration.
Key Path
Remote Command
172
Input/Output, I/Q
Prior to A.02.00
Input/Output, I/Q, I Setup | Q Setup, I Probe | Q Probe
[:SENSe]:CORRection:IQ:I|Q:ATTenuation:RATio <real>
[:SENSe]:CORRection:IQ:I|Q:ATTenuation:RATio?
"I/Q Guided Calibration " on page 208).
EMI Receiver Mode Reference