:CALCulate:PARameter:DEFine
Description
This command selects the measurement type, which should be performed. For more details about the different measurement types please refer to the general info page about measurements (Measurement Types).
Important
The standard behaviour of this method is that the input parameters (gain, attenuation, termination, ...) are kept. The optional DEFault parameter
allows to apply measurement relevant default (preset) settings.
Syntax
:CALCulate<ch>:PARameter<tr>:DEFine
| Command | Query | Query Response |
|---|---|---|
| Yes | Yes | The measurement type, see Parameters below. |
Parameters |
Accepted Format |
Allowed Suffixes |
Possible Errors |
Description |
|---|---|---|---|---|
{ S11 | S21 | GAINphase | CH1 | CH2 | Z | R | T } |
exactly the given options | none |
Illegal parameter value |
The measurement to perform. |
[optional] DEFault |
exactly the given options | none |
Illegal parameter value |
If applied the input parameters (gain, attenuation, termination, ...) are ALWAYS set to the default values; otherwise the settings from the previous measurement will be kept. |
To learn more about channels and traces, please refer to the SCPI command structure
Options
| Options | Description |
|---|---|
CH1 |
Absolute measurement on channel 1. (VRMS) |
CH2 |
Absolute measurement on channel 2. (VRMS) |
GAINphase |
Gain - phase measurement. |
R |
Absolute measurement on channel R (Ch1). (VRMS) |
S11 |
S11 measurement. |
S21 |
S21 measurement. |
T |
Absolute measurement on channel T (Ch2). (VRMS) |
Z |
Impedance measurement (Series Thru, Shunt Thru, Port 1 Reflection, External Coupler, External Bridge, Impedance Adapter and Voltage Current Gain as defined in: :SENSe:Z:METHod) |
Sample usage
Configure and start a S21 measurement.
visaSession.write(':SENS:FREQ:STAR 5kHz;STOP 50kHz\n')
visaSession.write(':CALC:PAR:DEF S21\n')
visaSession.write(':TRIG:SING\n')
visaSession.query('*OPC?\n')
frequencyValues = visaSession.query(':SENS:FREQ:DATA?\n')
measurementValues = visaSession.query(':CALC:DATA:SDAT?\n')
Related commands
:CALCulate:PARameter:COUNt
:CALCulate:PARameter:SELect
:SENSe:FREQuency:STARt
:SENSe:FREQuency:STOP