The Noise calibration type is used to make "Noise Figure" measurements in the PNA measurement class of "Noise Figure Cold Source". For more information see the Keysight documentation on Noise Concepts and Noise Measurements Offered.

The process requires either a noise source or a power sensor such as an ATE Systems FCM with the Noise or Power Sensor option installed. See CalRMethod to define which will be used. If using a noise source, it must be connected to port 2 of the PNA. If using a power sensor, it can be connected to either port 1 or port 2 of the PNA.

The following example shows how to configure a two port noise calibration on ports 1 and 2:

;*******************************************************************************
; Example configuration for a calibration type Noise using 2 ports
;*******************************************************************************
[CAL_Noise_2Port]
CalAcquireTimeoutSec = 200
CalRMethod = NoiseSource
CalSetDescription = CalSet for CAL_Noise_2Port
CalType = Noise
ConfigType = Calibration
CsaLoadFilename = Before_CAL_Noise_2Port.csa
DirectoryToUse = C:\Examples
NoisePath = PATH_NoiseSource
PathName = PATH_Noise_2Port
SaveFilename = After_CAL_Noise_2Port.csa
ThruDelay1To2 = 3E-09
ThruPath1To2 = PATH_UnknownThru_1-2
ThruPortPairs = 1:2

; FCM calibration device definitions
[ICM_FCM1]
ConfigType = Fcm
IpAddress = 10.11.0.201
[ICM_FCM2]
ConfigType = Fcm
IpAddress = 10.11.0.202

; ICM MultiSwitch controller and switch definitions
[ICM]
ConfigType = MultiSwitch
IpAddress = 10.11.0.100
[ICM_SW01]
ConfigType = Switch
Device = ICM
SwitchIndex = 1
[ICM_SW02]
ConfigType = Switch
Device = ICM
SwitchIndex = 2
[ICM_SW03]
ConfigType = Switch
Device = ICM
SwitchIndex = 3
[ICM_SW04]
ConfigType = Switch
Device = ICM
SwitchIndex = 4
[ICM_SW05]
ConfigType = Switch
Device = ICM
SwitchIndex = 5
[ICM_SW06]
ConfigType = Switch
Device = ICM
SwitchIndex = 6
[ICM_SW07]
ConfigType = Switch
Device = ICM
SwitchIndex = 7
[ICM_SW08]
ConfigType = Switch
Device = ICM
SwitchIndex = 8
[ICM_SW09]
ConfigType = Switch
Device = ICM
SwitchIndex = 9
[ICM_SW10]
ConfigType = Switch
Device = ICM
SwitchIndex = 10

; Path defining FCMs to be used during calibration
[PATH_Noise_2Port]
ConfigType = Path
PnaPort1Device = ICM_FCM1:1
PnaPort2Device = ICM_FCM2:1
SwitchPath = PATH_TestPortThru

; Path to the noise source
[PATH_NoiseSource]
ConfigType = Path
SwitchPath = ICM_SW10:1

; Path for test ports through to FCMs
[PATH_TestPortThru]
ConfigType = Path
SwitchPath = ICM_SW01:1,ICM_SW02:1,ICM_SW03:1,ICM_SW04:1,ICM_SW10:0

; Path for unknown thru between port 1 and 2
[PATH_UnknownThru_1-2]
ConfigType = Path
SwitchPath = ICM_SW01:2,ICM_SW02:2,ICM_SW03:2,ICM_SW04:2,ICM_SW05:4,ICM_SW06:1,ICM_SW07:1,ICM_SW08:4

; PNA definition
[PNA-x]
ConfigType = Pna
DirectoryToUse = C:\Temp
IpAddress = 10.11.0.200

The calibration type must be set to "Noise"

CalType = Noise

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_Noise_2Port

The noise path defines the RF path to the noise source. In this example a reference is made to a Path configuration section to be used.

NoisePath = PATH_NoiseSource

In this example a 2 port measurement is being made a thru path and thru pair must be defined.

ThruPath1To2 = PATH_UnknownThru_1-2
ThruPortPairs = 1:2