The Power calibration type is used to perform Source Power Calibrations. Power calibrations are used when you need accurate power levels at a calibration reference plane. For example, if you need a specified input power across a frequency range. You would perform a source power cal at the input of the amplifier to ensure the exact power level into the amplifier across the frequency range.

Using a Source Power Cal, you can expect the power at the point of calibration to be within the range of the uncertainty of the power meter and sensor that is used.

For more information please see the Keysight documentation on Source Power Calibration

The process requires an ATE power meter such as an FCM with the Power option installed.

One should note that the power level is set differently from the the S Parameter with Power Calibration. SParamWithPower calibrations use a "PowerLevel" setting to set an absolute power level. With source power calibrations an offset value is used.

The following example shows how to configure a power calibration on port 1:

;*******************************************************************************
; Example configuration for a calibration type Power
;*******************************************************************************
[CAL_Power_1Port]
CalAcquireTimeoutSec = 200
CalType = Power
ConfigType = Calibration
DirectoryToUse = C:\Examples
PathName = PATH_Power_1Port
PowerAverageCount = 1
PowerAverageTolerance = 0.02
PowerIterationCount = 30
PowerIterationTolerance = 0.05
PowerLevelOffset = 0
PowerSensorPort = 1

; FCM definition
[FCM_1]
ConfigType = Fcm
IpAddress = 10.10.11.201

; Path definition
[PATH_Power_1Port]
ConfigType = Path
PnaPort1Device = FCM_1:1

; PNA definition
[PNA-X]
ConfigType = Pna
DirectoryToUse = C:\Temp
IpAddress = 10.10.11.200

The calibration type must be set to "Power"

CalType = Power

The path defines which PNA ports and calibration devices will be used in the calibration. The path name specifies the path to use.

PathName = PATH_Power_1Port

The power sensor port the PNA port that will be used to make the power measurements.

PowerSensorPort = 1

The power level is determined by the state of the PNA at the time the measurements begin, to modify this level the PowerLevelOffset is used. Please note this differs from the S Parameter with Power Calibration

PowerLevelOffset = 0

This example shows the default parameters used to make power measurements and could be omitted, However if different values are desired then those parameters would need to be specified as shown below.

PowerAverageCount = 1
PowerAverageTolerance = 0.02
PowerIterationCount = 30
PowerIterationTolerance = 0.05