Controls the Gain Compression configuration.
SENSe:GCSetup: COMPression: | INTerpolate | [:STATe] | PHASe | LEVel | MODE MIXer | INPut? | OUTPut? | SOURce | OVERride POWer: | LINear:INPut:COMPute:APERture SAFE: | DC SMARt: | CDC SWEep: | POWer: | SMOoth | APERture |
Click on a keyword to view the command details.
CALCulate:MEASure:DEFine - creates a gain compression measurement.
CALC:MEAS:GCMeas:ANAL - Gain Compression Analysis settings
GCA Calibration uses the Guided Calibration commands, except for the following:
Sens:Corr:GCS:Power - sets power level for Source Power Cal
GCX
Setup Mixer using Sense:Mixer commands
Calibrate using SMC commands and Guided commands
Example Programs
Applicable Models: All with Gain Compression Option (Read-Write) Set and read the method by which gain compression data is acquired. |
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Parameters |
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<ch> |
Any existing GCA channel. If unspecified, value is set to 1. |
<enum> |
Choose from:
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Examples |
SENS:GCS:AMOD SMAR sense:gcsetup:amode pfrequency |
Query Syntax |
SENSe<ch>:GCSetup:AMODe ? |
Return Type |
Enumeration |
Default |
SMARtsweep |
Applicable Models: All with Gain Compression Option (Read-Write) Set and read the algorithm method used to compute gain compression. |
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Parameters |
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<ch> |
Any existing GCA channel. If unspecified, value is set to 1. |
<enum> |
Algorithm method. Choose from:
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Examples |
SENS:GCS:COMP:ALG BACK sense:gcsetup:compression:algorithm XYcom |
Query Syntax |
SENSe<ch>:GCSetup:COMPression:ALGorithm? |
Return Type |
Enumeration |
Default |
CFLG |
Applicable Models: All with Gain Compression Option (Read-Write) Set and read value for the BackOff compression algorithm. |
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Parameters |
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<ch> |
Any existing GCA channel. If unspecified, value is set to 1. |
<num> |
Backoff value in dB. Choose a value between 1 and 99. |
Examples |
SENS:GCS:COMP:BACK:LEV 10 sense:gcsetup:compression:backoff:level 5 |
Query Syntax |
SENSe<ch>:GCSetup:COMPression:BACKoff:LEVel? |
Return Type |
Numeric |
Default |
10 |
Applicable Models: All with Gain Compression Option (Read-Write) Set and read the 'X" value in the delta X/Y compression algorithm. |
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Parameters |
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<ch> |
Any existing GCA channel. If unspecified, value is set to 1. |
<num> |
X value in dB. Choose a value from .01 to 10. |
Examples |
SENS:GCS:COMP:DELT:X 9 sense:gcsetup:compression:delta:X 8 |
Query Syntax |
SENSe<ch>:GCSetup:COMPression:DELTa:X? |
Return Type |
Numeric |
Default |
10 |
Applicable Models: All with Gain Compression Option (Read-Write) Set and read the 'Y" value in the delta X/Y compression algorithm. |
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Parameters |
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<ch> |
Any existing GCA channel. If unspecified, value is set to 1. |
<num> |
Y value in dB. Choose a value from .01 to 10. |
Examples |
SENS:GCS:COMP:DELT:Y 9 sense:gcsetup:compression:delta:Y 8 |
Query Syntax |
SENSe<ch>:GCSetup:COMPression:DELTa:Y? |
Return Type |
Numeric |
Default |
9 |
Applicable Models: All with Gain Compression Option (Read-Write) Sets whether or not interpolation should be performed on 2D measured compression data. Applies ONLY to 2D acquisition modes. |
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Parameters |
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<ch> |
Any existing GCA channel. If unspecified, value is set to 1. |
<bool> |
Choose from: ON or (1) Interpolate the results OFF or (0) Do NOT interpolate the results but return the value closest to compression. |
Examples |
SENS:GCS:COMP:INT 1 sense:gcsetup:compression:interpolate off |
Query Syntax |
SENSe<ch>:GCSetup:COMPression:INTerpolation? |
Return Type |
Boolean |
Default |
OFF |
Applicable Models: All with Gain Compression Option (Read-Write) Set and read the desired gain reduction (from reference gain). This value is used for Compression from Linear Gain and Compression from Maximum Gain. Use SENS:GCS:COMP:ALG CFLG to set this compression algorithm. |
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Parameters |
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<ch> |
Any existing GCA channel. If unspecified, value is set to 1. |
<num> |
Compression level in dB. Choose a value between .01 and 100. |
Examples |
SENS:GCS:COMP:LEV 1 sense:gcsetup:compression:level 3 |
Query Syntax |
SENSe<ch>:GCSetup:COMPression:LEVel? |
Return Type |
Numeric |
Default |
1 |
Applicable Models: All with Gain Compression Option (Read-Write) Set and read the desired phase to measure compression. This is only used when SENSe:GCSetup:COMPression:PHASe:MODE is set to PHASe or BOTH. |
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Parameters |
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<ch> |
Any existing GCA channel. If unspecified, value is set to 1. |
<num> |
Phase level in degrees. Choose a value between .01 and 360. |
Examples |
SENS:GCS:COMP:PHAS:LEV 0.01 sense:gcsetup:compression:phase:level 0.01 |
Query Syntax |
SENSe<ch>:GCSetup:COMPression:PHASe:LEVel? |
Return Type |
Numeric |
Default |
2 |
Applicable Models: All with Gain Compression Option (Read-Write) Set and read compression format to be either magnitude, phase, or magnitude and phase. This option is only available with the 2D type of compression sweeps. |
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Parameters |
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<ch> |
Any existing GCA channel. If unspecified, value is set to 1. |
<enum> |
Choose from:
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Examples |
SENS:GCS:COMP:PHAS:MODE PHAS sense:gcsetup:compression:phase:mode both |
Query Syntax |
SENSe<ch>:GCSetup:COMPression:PHASe:MODE? |
Return Type |
Enumeration |
Default |
MAGNitude |
Applicable Models: All with Gain Compression Option (Read-Write) Set and read the deviation dB from the maximum Pout. This is the point of saturation. Use SENS:GCS:COMP:ALG CFLG to set this compression algorithm. |
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Parameters |
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<ch> |
Any existing GCA channel. If unspecified, value is set to 1. |
<num> |
Saturation level in dB. Choose a value between .01 and 10. |
Examples |
SENS:GCS:COMP:SAT:LEV 1 sense:gcsetup:compression:saturation:level 3 |
Query Syntax |
SENSe<ch>:GCSetup:COMPressionSATuration:LEVel? |
Return Type |
Numeric |
Default |
.1 dB |
Applicable Models: All with Gain Compression Option (Read-Write) This setting is used to protect a sensitive device from too much power during the sweep retrace. Other instrument settings or channels may over-ride this setting. Learn more. |
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Parameters |
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<ch> |
Any existing GCA channel. If unspecified, value is set to 1. |
<enum> |
End Of Sweep operation. Choose from:
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Examples |
SENS:GCS:EOS PSTA sense:gcsetup:eosoperation standard |
Query Syntax |
SENSe<ch>:GCSetup:EOSoperation? |
Return Type |
Enumeration |
Default |
STANdard |
Applicable Models: All with Gain Compression Option (Read-Write) Set and read the state of the mixer reference. This option is only available in Gain Compression for Converters (GCX), and is only used when SENSe:GCSetup:COMPression:PHASe:MODE is set to PHASe or BOTH. To improve the noise of the phase measurements in GCX, an optional user supplied external reference can be added to the R1 loop. The LO for the reference mixer should be common with the LO for the DUT mixer. After this hardware is added, and this command is set to ON, the GCX application will use the reference mixer to improve the phase measurements. |
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Parameters |
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<ch> |
Any existing GCA channel. If unspecified, value is set to 1. |
<bool> |
Choose from: ON or (1) Enable mixer reference. OFF or (0) Disable mixer reference. |
Examples |
SENS:GCS:MIX:REF 1 sense:gcsetup:mixer:reference off |
Query Syntax |
SENSe<ch>:GCSetup:MIXer:REFerence? |
Return Type |
Boolean |
Default |
OFF |
Applicable Models: All with Gain Compression Option (Write-only) Set the DUT-to-VNA port mapping for the Gain Compression measurement. |
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Parameters |
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<ch> |
Any existing GCA channel. If unspecified, value is set to 1. |
<in> |
VNA port which is connected to the DUT input. |
<out> |
VNA port which is connected to the DUT output. |
Examples |
SENS:GCS:PMAP 1,2 sense:gcsetup:pmap 2,1 |
Query Syntax |
Not Applicable |
Default |
1,2 |
Applicable Models: All with Gain Compression Option (Read-only) Read the VNA port number to be connected to the DUT Input. Use SENS:GCS:PORTMap to set the port mapping. |
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Parameters |
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<ch> |
Any existing GCA channel. If unspecified, value is set to 1. |
Examples |
SENS:GCS:PMAP:INP? sense:gcsetup:pmap:input? |
Return Type |
Numeric |
Default |
1 |
Applicable Models: All with Gain Compression Option (Read-only) Read the VNA port number to be connected to the DUT Output. |
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Parameters |
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<ch> |
Any existing GCA channel. If unspecified, value is set to 1. |
Examples |
SENS:GCS:PMAP:OUTP? sense:gcsetup:pmap:output? |
Return Type |
Numeric |
2 |
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Applicable Models: All with Gain Compression Option (Read-Write) This function is used when GCX channels with a reference mixer and one GCA channel without a reference mixer are set up simultaneously and you want to use the same path configuration for all channels. This remaps the source port to Port 1. This is only used when SENSe:GCSetup:COMPression:PHASe:MODE is set to PHASe or BOTH. |
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Parameters |
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<ch> |
Any existing GCA/GCX channel. If unspecified, value is set to 1. |
<bool> |
Choose from: ON or (1) Use same path configuration for all channels. OFF or (0) Do not use the same path configuration for all channels. |
Examples |
SENS:GCS:PMAP:SOUR:OVER 1 sense:gcsetup:pmap:source:override off |
Query Syntax |
SENSe<ch>:GCSetup:PMAP:SOURce:OVERride? |
Return Type |
Boolean |
Default |
OFF |
Applicable Models: All with Gain Compression Option (Read-Write) Set and read the aperture to use when computing the linear input power. This is only used when SENSe:GCSetup:COMPression:PHASe:MODE is set to PHASe or BOTH. In that mode, the linear input power is computed using a least squares fit of the linear region. This command sets the width, or aperture, of the linear input region. The default is 5%. |
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Parameters |
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<ch> |
Any existing GCA channel. If unspecified, value is set to 1. |
<num> |
Input percentage. Choose a value from 0 to 25. |
Examples |
SENS:GCS:POW:LIN:INP:COMP:APER 5 sense:gcsetup:power:linear:input:compute:aperture 5 |
Query Syntax |
SENSe<ch>:GCSetup:POWer:LINear:INPut:COMPute:APERture? |
Return Type |
Numeric |
Default |
5 |
Applicable Models: All with Gain Compression Option (Read-Write) Set and read the input power at which Linear Gain and all S-parameters are measured. |
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Parameters |
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<ch> |
Any existing GCA channel. If unspecified, value is set to 1. |
<num> |
Input power level in dBm. Choose a value from +30 to (-30). |
Examples |
SENS:GCS:POW:LIN:INP:LEV 0 sense:gcsetup:power:linear:input:level -10 |
Query Syntax |
SENSe<ch>:GCSetup:POWer:LINear:INPut:LEVel? |
Return Type |
Numeric |
Default |
-25 dBm |
Applicable Models: All with Gain Compression Option (Read-Write) Set and read the reverse power level to the DUT. This is applied to the DUT output port when making reverse measurements like S22. |
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Parameters |
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<ch> |
Any existing GCA channel. If unspecified, value is set to 1. |
<num> |
Reverse power level in dBm. Choose a value from +30 to (-30). |
Examples |
SENS:GCS:POW:REV:LEV 0 sense:gcsetup:power:reverse:level -5 |
Query Syntax |
SENSe<ch>:GCSetup:POWer:REVerse:LEVel? |
Return Type |
Numeric |
Default |
-5 |
Applicable Models: All with Gain Compression Option (Read-Write) Set and read the start power level. |
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Parameters |
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<ch> |
Any existing GCA channel. If unspecified, value is set to 1. |
<num> |
Start power level in dBm. Choose a value from +30 to (-30). |
Examples |
SENS:GCS:POW:STAR:LEV 0 sense:gcsetup:power:start:level -5 |
Query Syntax |
SENSe<ch>:GCSetup:POWer:STARt:LEVel? |
Return Type |
Numeric |
Default |
-25 |
Applicable Models: All with Gain Compression Option (Read-Write) Set and read the stop power level. |
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Parameters |
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<ch> |
Any existing GCA channel. If unspecified, value is set to 1. |
<num> |
Stop power level in dBm. Choose a value from +30 to (-30). |
Examples |
SENS:GCS:POW:STOP:LEV 0 sense:gcsetup:power:stop:level -5 |
Query Syntax |
SENSe<ch>:GCSetup:POWer:STOP:LEVel? |
Return Type |
Numeric |
Default |
-5 |
Applicable Models: All with Gain Compression Option (Read-Write) Set and read the Safe Sweep COARSE power adjustment. Learn more. |
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Parameters |
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<ch> |
Any existing GCA channel. If unspecified, value is set to 1. |
<num> |
Coarse power adjustment setting in dBm. Choose a value between 0 and 6. |
Examples |
SENS:GCS:SAFE:CPAD 2 sense:gcsetup:safe:cpadjustment 3.5 |
Query Syntax |
SENSe<ch>:GCSetup:SAFE:CPADjustment? |
Return Type |
Numeric |
Default |
3.0 |
Applicable Models: All with Gain Compression Option (Read-Write) Set and read the maximum limit of the external DC device. |
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Parameters |
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<ch> |
Any existing GCA channel. If unspecified, value is set to 1. |
<num> |
Maximum DC level. |
Examples |
SENS:GCS:SAFE:DC:MLIM -5 sense:gcsetup:safe:dc:mlimit -5 |
Query Syntax |
SENSe<ch>:GCSetup:SAFE:DC:MLIMit? |
Return Type |
Numeric |
Default |
-5 |
Applicable Models: All with Gain Compression Option (Read-Write) Set and read the name of the external DC device. |
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Parameters |
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<ch> |
Any existing GCA channel. If unspecified, value is set to 1. |
<value> |
(String) Name of the external DC device. |
Examples |
SENS:GCS:SAFE:DC:PAR "MyDCDevice" sense:gcsetup:safe:dc:parameter "MYDCDevice" |
Query Syntax |
SENSe<ch>:GCSetup:SAFE:DC:PARameter? |
Return Type |
String |
Default |
Not Applicable |
Applicable Models: All with Gain Compression Option (Read-Write) Set and read the (ON | OFF) state of Safe Sweep mode. Learn more |
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Parameters |
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<ch> |
Any existing GCA channel. If unspecified, value is set to 1. |
<num> |
(Boolean) - Safe Sweep state. Choose from: OFF (or 0) - Disable Safe Sweep ON (or 1) - Enable Safe Sweep |
Examples |
SENS:GCS:SAFE:ENAB 0 sense:gcsetup:safe:enable 1 |
Query Syntax |
SENSe<ch>:GCSetup:SAFE:ENABle? |
Return Type |
Boolean |
Default |
0 |
Applicable Models: All with Gain Compression Option (Read-Write) Set and read the Safe Sweep FINE power adjustment. Learn more |
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Parameters |
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<ch> |
Any existing GCA channel. If unspecified, value is set to 1. |
<num> |
Fine power adjustment setting in dBm. Choose a value between 0 and 3. |
Examples |
SENS:GCS:SAFE:FPAD 2 sense:gcsetup:safe:fpadjustment .5 |
Query Syntax |
SENSe<ch>:GCSetup:SAFE:FPADjustment? |
Return Type |
Numeric |
Default |
1.0 dBm |
Applicable Models: All with Gain Compression Option (Read-Write) Set and read the compression level in which Safe Sweep changes from the COARSE power adjustment to the FINE power adjustment. Learn more |
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Parameters |
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<ch> |
Any existing GCA channel. If unspecified, value is set to 1. |
<num> |
Threshold setting in dB. Choose a value between 0 and 3. |
Examples |
SENS:GCS:SAFE:FTHR .1 sense:gcsetup:safe:fthreshold .75 |
Query Syntax |
SENSe<ch>:GCSetup:SAFE:FTHReshold? |
Return Type |
Numeric |
Default |
0.5 dB |
Applicable Models: All with Gain Compression Option (Read-Write) When the VNA port that is connected to the DUT Output measures this value, the input power to the DUT is no longer incremented at that frequency. Safe Mode must be enabled with SENS:GCS:SAFE:ENAB ON Learn more |
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Parameters |
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<ch> |
Any existing GCA channel. If unspecified, value is set to 1. |
<num> |
Maximum power limit in dBm. Choose a value from -100 to +100 |
Examples |
SENS:GCS:SAFE:MLIM 20 sense:gcsetup:safe:mlimit 30 |
Query Syntax |
SENSe<ch>:GCSetup:SAFE:MLIMit? |
Return Type |
Numeric |
Default |
30 |
Applicable Models: All with Gain Compression Option (Read-only) Returns a comma-separated list of the frequency indexes that were out of tolerance for SMART Sweep mode, or at the power limit for 2D acquisition modes. Zero (0) is the first frequency data point. Must be Single triggered. Invalid results occur if the GCA channel is continuously sweeping. |
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Parameters |
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<ch> |
Any existing GCA channel. If unspecified, value is set to 1. |
Examples |
SENS:GCS:SFA? sense:gcsetup:sfailures? |
Return Type |
Comma-separated list of frequency indexes. |
Default |
Not Applicable |
Applicable Models: All with Gain Compression Option (Read-Write) Set and read the DC readings at the compression point in the last iteration of a smart sweep. Taking only these DC readings improves measurement speed. |
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Parameters |
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<ch> |
Any existing GCA channel. If unspecified, value is set to 1. |
<bool> |
Choose from: ON or (1) Enable reading DC value at compression point in the last iteration of a smart sweep. OFF or (0) Disable reading DC value at compression point in the last iteration of a smart sweep. |
Examples |
SENS:GCS:SMAR:CDC 1 sense:gcsetup:smart:cdc off |
Query Syntax |
SENSe<ch>:GCSetup:SMARt:CDC? |
Return Type |
Boolean |
Default |
OFF |
Applicable Models: All with Gain Compression Option (Read-Write) Set and read the maximum permitted number of iterations which SMART Sweep may utilize to find the desired compression level, to within the specified tolerance. |
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Parameters |
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<ch> |
Any existing GCA channel. If unspecified, value is set to 1. |
<num> |
Maximum number of iterations. Choose a value between 1 and 500 |
Examples |
SENS:GCS:SMAR:MIT 5 sense:gcsetup:smart:miterations 3 |
Query Syntax |
SENSe<ch>:GCSetup:SMARt:MITerations? |
Return Type |
Numeric |
Default |
20 |
Applicable Models: All with Gain Compression Option (Read-Write) Set and read enable for showing intermediate results for each iteration of SMART Sweep |
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Parameters |
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<ch> |
Any existing GCA channel. If unspecified, value is set to 1. |
<bool> |
Choose from: ON or (1) Compression traces are updated after each iteration. OFF or (0) Compression traces are updated after ALL iterations are complete. |
Examples |
SENS:GCS:SMAR:SIT 1 sense:gcsetup:smart:siterations off |
Query Syntax |
SENSe<ch>:GCSetup:SMARt:SITerations? |
Return Type |
Boolean |
Default |
OFF |
Applicable Models: All with Gain Compression Option (Read-Write) Set and read the amount of time SMART Sweep will dwell at the first point where the input power changes by the Backoff or X level. Applies only to SMART Sweep when Backoff or XY compression methods are selected. Learn more. |
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Parameters |
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<ch> |
Any existing GCA channel. If unspecified, value is set to 1. |
<num> |
Settling time in seconds. Choose any positive value. |
Examples |
SENS:GCS:SMAR:STIM 1 sense:gcsetup:smart:stime .1 |
Query Syntax |
SENSe<ch>:GCSetup:SMARt:STIMe? |
Return Type |
Numeric |
Default |
0 |
Applicable Models: All with Gain Compression Option (Read-Write) Set and read the acceptable range SMART Sweep will allow for the measured compression level. |
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Parameters |
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<ch> |
Any existing GCA channel. If unspecified, value is set to 1. |
<num> |
Tolerance level in dBm. Choose a value between .01 and 10 |
Examples |
SENS:GCS:SMAR:TOL .1 sense:gcsetup:smart:tolerance .05 |
Query Syntax |
SENSe<ch>:GCSetup:SMARt:TOLerance? |
Return Type |
Numeric |
Default |
.05 |
Applicable Models: All with Gain Compression Option (Read-Write) Set and read the number of data points in each frequency sweep. Learn more |
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Parameters |
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<ch> |
Any existing GCA channel. If unspecified, value is set to 1. |
<num> |
Frequency points. Do not exceed the max number of data points. |
Examples |
SENS:GCS:SWE:FREQ:POIN 201 sense:gcsetup:sweep:frequency:points 101 |
Query Syntax |
SENSe<ch>:GCSetup:SWEep:FREQuency:POINts? |
Return Type |
Numeric |
Default |
201 |
Applicable Models: All with Gain Compression Option (Read-Write) Set and read the number of data points in each power sweep. Applies ONLY to 2D acquisition modes. |
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Parameters |
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<ch> |
Any existing GCA channel. If unspecified, value is set to 1. |
<num> |
Power points. Do not exceed the max number of data points. |
Examples |
SENS:GCS:SWE:POW:POIN 50 sense:gcsetup:sweep:power:points 21 |
Query Syntax |
SENSe<ch>:GCSetup:SWEep:POWer:POINts? |
Return Type |
Numeric |
Default |
21 |
Applicable Models: All with Gain Compression Option (Read-Write) Set and read the state of the power smoothing. This is only available in Gain Compression for Converters (GCX). This is only used when SENSe:GCSetup:COMPression:PHASe:MODE is set to PHASe or BOTH. This enables an optional smoothing procedure of the power sweep. |
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Parameters |
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<ch> |
Any existing GCA channel. If unspecified, value is set to 1. |
<bool> |
Choose from: ON or (1) Enable power smoothing. OFF or (0) Disable power smoothing. |
Examples |
SENS:GCS:SWE:POW:SMO 1 sense:gcsetup:sweep:power:smooth off |
Query Syntax |
SENSe<ch>:GCSetup:SWEep:POWer:SMOoth? |
Return Type |
Boolean |
Default |
OFF |
Applicable Models: All with Gain Compression Option (Read-Write) Set and read the power smoothing aperture in percent. This is only available in Gain Compression for Converters (GCX). This is only used when SENSe:GCSetup:COMPression:PHASe:MODE is set to PHASe or BOTH. It is only applied when smoothing has been enabled. This SCPI command configures the smoothing aperture used. The default is 25%. |
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Parameters |
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<ch> |
Any existing GCA channel. If unspecified, value is set to 1. |
<num> |
Power smoothing aperture. |
Examples |
SENS:GCS:SWE:POW:SMO:APER 10 sense:gcsetup:sweep:power:smooth:aperture 10 |
Query Syntax |
SENSe<ch>:GCSetup:SWEep:POWer:SMOoth:APERture? |
Return Type |
Numeric |
Default |
25 |