Calculate:Transform Commands


Specifies the settings for time domain transform.

These commands are Superseded by the CALCulate:MEASure:TRANsform commands.

CALCulate:TRANsform

COUple:

     | PARameters

TIME:

     | ALIGnment

     | CENTer

     | IMPulse

          | WIDTh

     | KBESsel

     | LPFRequency

     | MARKer

          | MODE

          | UNIT

     | SPAN

     | STARt

     | STATe

     | STEP

          | RTIMe

     | STIMulus

     | STOP

     | [:TYPE]

 

Click on a keyword to view the command details.

See Also

Critical Note: CALCulate commands act on the selected measurement. You can select one measurement for each channel using Calc:Par:MNUM or Calc:Par:Select.


CALCulate<cnum>:TRANsform:COUPle:PARameters <num>

Applicable Models: N522xB, N523xB, N524xB, M937xA, P937xA

(Read-Write)  Specifies the time domain transform parameters to be coupled. The settings for those parameters will be copied from the selected measurement to all other measurements on the channel.

Learn more about Time Domain Trace Coupling

See Critical Note

Parameters

 

<cnum>

Channel number of the measurement. There must be a selected measurement on that channel. If unspecified, <cnum> is set to 1.

<num>

(Numeric) Parameters to couple. To specify more than one parameter, add the numbers.

1 - Transform Stimulus (Start, Stop, Center, and Span TIME settings.)

2 - Transform State (ON / OFF)

4 - Transform Window (Kaiser Beta / Impulse Width)

8 - Transform Mode (Low Pass Impulse, Low Pass Step, Band Pass)

16 - Transform Distance Marker Units

Examples

'To couple all parameters:

CALC:TRAN:COUP:PAR 31

'To couple Stimulus and Mode:
calculate2:transform:couple:parameters 9

Query Syntax

CALCulate<cnum>:TRANsform:COUPle:PARameters?

Return Type

Numeric

Default

29 (All parameters except 2 - Transform State)


CALCulate<cnum>:TRANsform:TIME:CENTer <num>

Applicable Models: N522xB, N523xB, N524xB, M937xA, P937xA

(Read-Write) Sets the center time for time domain measurements.

See Critical Note

Parameters

 

<cnum>

Channel number of the measurement. There must be a selected measurement on that channel. If unspecified, <cnum> is set to 1.

<num>

Center time in seconds; any number between:
±
(number of points-1) / frequency span

Note: This command will accept MIN or MAX instead of a numeric parameter. See SCPI Syntax for more information.

Examples

CALC:TRAN:TIME:CENT 1e-8
calculate2:transform:time:center 15 ps

Query Syntax

CALCulate<cnum>:TRANsform:TIME:CENTer?

Return Type

Numeric

Default

0


CALCulate<cnum>:TRANsform:TIME:IMPulse:WIDTh <num>

Applicable Models: N522xB, N523xB, N524xB, M937xA, P937xA

(Read-Write) Sets the impulse width for the transform window.

See Critical Note

Parameters

 

<cnum>

Channel number of the measurement. There must be a selected measurement on that channel. If unspecified, <cnum> is set to 1.

<num>

Impulse width in seconds; Choose any number between:
.6 / frequency span
and 1.39 / frequency span

Examples

CALC:TRAN:TIME:IMP:WIDTh 10
calculate2:transform:time:impulse:width 13

Query Syntax

CALCulate<cnum>:TRANsform:TIME:IMPulse:WIDTh?

Return Type

Numeric

Default

.98 / Default Span


CALCulate<cnum>:TRANsform:TIME:KBESsel <num>

Applicable Models: N522xB, N523xB, N524xB, M937xA, P937xA

(Read-Write) Sets the parametric window for the Kaiser Bessel window.

See Critical Note

Parameters

 

<cnum>

Channel number of the measurement. There must be a selected measurement on that channel. If unspecified, <cnum> is set to 1.

<num>

Window width for Kaiser Bessel in seconds; Choose any number between:
0.0
and 13.0

Examples

CALC:TRAN:TIME:KBES 10
calculate2:transform:time:kbessel 13

Query Syntax

CALCulate<cnum>:TRANsform:TIME:KBESsel?

Return Type

Numeric

Default

6


CALCulate<cnum>:TRANsform:TIME:LPFREQuency

Applicable Models: N522xB, N523xB, N524xB, M937xA, P937xA

(Write-only) Sets the start frequencies in LowPass Mode.

See Critical Note

Parameters

 

<cnum>

Channel number of the measurement. There must be a selected measurement on that channel. If unspecified, <cnum> is set to 1.

Examples

CALC:TRAN:TIME:LPFR
calculate2:transform:time:lpfrequency

Query Syntax

Not applicable

Default

Not applicable


CALCulate<cnum>:TRANsform:TIME:MARKer:MODE <char>

Applicable Models: N522xB, N523xB, N524xB, M937xA, P937xA

(Read-Write)   Specifies the measurement type in order to determine the correct marker distance.

  • Select Auto for S-Parameter measurements.

  • Select Reflection or Transmission for arbitrary ratio or unratioed measurements.

This setting affects the display of ALL markers for only the ACTIVE measurement.

Learn more about Distance Markers.

See Critical Note

Parameters

 

<cnum>

Channel number of the measurement. There must be a selected measurement on that channel. If unspecified, <cnum> is set to 1.

<char>

Choose from:

AUTO  If the active measurement is an S-Parameter, automatically chooses reflection or transmission. If  non S-Parameter measurements, reflection is chosen.

REFLection  Displays the distance from the source to the receiver divided by two (to compensate for the return trip.)

TRANsmission  Displays the distance from the source to the receiver.

Examples

CALC:TRAN:TIME:MARK:MODE REFL
calculate2:transform:time:marker:mode auto

Query Syntax

CALCulate<cnum>:TRANsform:TIME:MARKer:MODE?

Return Type

Character

Default

Auto


CALCulate<cnum>:TRANsform:TIME:MARKer:UNIT <char>

Applicable Models: N522xB, N523xB, N524xB, M937xA, P937xA

(Read-Write)  Specifies the unit of measure for the display of marker distance values. This settings affects the display of ALL markers for only the ACTIVE measurement (unless Distance Maker Units are coupled using CALC:TRAN:COUP:PAR.

Learn more about Distance Markers.

See Critical Note

Parameters

 

<cnum>

Channel number of the measurement. There must be a selected measurement on that channel. If unspecified, <cnum> is set to 1.

<char>

Choose from:

METRs

FEET

INCHes

Examples

CALC:TRAN:TIME:MARK:UNIT INCH
calculate2:transform:time:marker:unit feet

Query Syntax

CALCulate<cnum>:TRANsform:TIME:MARKer:UNIT?

Return Type

Character

Default

METRs


CALCulate<cnum>:TRANsform:TIME:SPAN <num>

Applicable Models: N522xB, N523xB, N524xB, M937xA, P937xA

(Read-Write) Sets the span time for time domain measurements.

See Critical Note

Parameters

 

<cnum>

Channel number of the measurement. There must be a selected measurement on that channel. If unspecified, <cnum> is set to 1.

<num>

Span time in seconds; any number between:
0
and 2* [(number of points-1) / frequency span]

Note: This command will accept MIN or MAX instead of a numeric parameter. See SCPI Syntax for more information.

Examples

CALC:TRAN:TIME:SPAN 1e-8
calculate2:transform:time:span maximum

Query Syntax

CALCulate<cnum>:TRANsform:TIME:SPAN?

Return Type

Numeric

Default

20 ns


CALCulate<cnum>:TRANsform:TIME:STARt <num>

Applicable Models: N522xB, N523xB, N524xB, M937xA, P937xA

(Read-Write) Sets the start time for time domain measurements.

See Critical Note

Parameters

 

<cnum>

Channel number of the measurement. There must be a selected measurement on that channel. If unspecified, <cnum> is set to 1.

<num>

Start time in seconds; any number between:
±
(number of points-1) / frequency span

Note: This command will accept MIN or MAX instead of a numeric parameter. See SCPI Syntax for more information.

Examples

CALC:TRAN:TIME:STAR 1e-8
calculate2:transform:time:start minimum

Query Syntax

CALCulate<cnum>:TRANsform:TIME:STARt?

Return Type

Numeric

Default

-10 ns


CALCulate<cnum>:TRANsform:TIME:STATe <ON | OFF>

Applicable Models: N522xB, N523xB, N524xB, M937xA, P937xA

(Read-Write) Turns the time domain transform capability ON or OFF.

See Critical Note

Note: Sweep type must be set to Linear Frequency in order to use Time Domain Transform.

Parameters

 

<cnum>

Channel number of the measurement. There must be a selected measurement on that channel. If unspecified, <cnum> is set to 1.

<ON|OFF>

ON (or 1) - turns time domain ON.
OFF
(or 0) - turns time domain OFF.

Examples

CALC:TRAN:TIME:STAT ON
calculate2:transform:time:state off

Query Syntax

CALCulate<cnum>:TRANsform:TIME:STATe?

Return Type

Boolean (1 = ON, 0 = OFF)

Default

OFF


CALCulate<cnum>:TRANsform:TIME:STOP <num>

Applicable Models: N522xB, N523xB, N524xB, M937xA, P937xA

(Read-Write) Sets the stop time for time domain measurements.

See Critical Note

Parameters

 

<cnum>

Channel number of the measurement. There must be a selected measurement on that channel. If unspecified, <cnum> is set to 1.

<num>

Stop time in seconds; any number between:
±
(number of points-1) / frequency span

Note: This command will accept MIN or MAX instead of a numeric parameter. See SCPI Syntax for more information.

Examples

CALC:TRAN:TIME:STOP 1e-8
calculate2:transform:time:stop maximum

Query Syntax

CALCulate<cnum>:TRANsform:TIME:STOP?

Return Type

Numeric

Default

10 ns


CALCulate<cnum>:TRANsform:TIME:STEP:RTIMe <num>

Applicable Models: N522xB, N523xB, N524xB, M937xA, P937xA

(Read-Write) Sets the step rise time for the transform window.

See Critical Note

Parameters

 

<cnum>

Channel number of the measurement. There must be a selected measurement on that channel. If unspecified, <cnum> is set to 1.

<num>

Rise time in seconds; Choose any number between:
.45 / frequency span
and 1.48 / frequency span

Examples

CALC:TRAN:TIME:STEP:RTIM 1e-8
calculate2:transform:time:step:rtime 15 ps

Query Syntax

CALCulate<cnum>:TRANsform:TIME:STEP:RTIMe?

Return Type

Numeric

Default

.99 / Default Span


CALCulate<cnum>:TRANsform:TIME:STIMulus <char>

Applicable Models: N522xB, N523xB, N524xB, M937xA, P937xA

(Read-Write) Sets the type of simulated stimulus that will be incident on the DUT.

See Critical Note

Parameters

 

<cnum>

Channel number of the measurement. There must be a selected measurement on that channel. If unspecified, <cnum> is set to 1.

<char>

Choose from:
STEP -
simulates a step DUT stimulus
IMPulse -
simulates a pulse DUT stimulus

STEP can ONLY be used when CALC:TRAN:TIME:TYPE is set to LPASs (Lowpass). (STEP cannot be used with TYPE = BPASs.)

:STIM STEP will set :TYPE to LPASs

:TYPE BPASs will set :STIM to IMPulse

Examples

CALC:TRAN:TIME:STIM STEP
calculate2:transform:time:stimulus impulse

Query Syntax

CALCulate<cnum>:TRANsform:TIME:STIMulus?

Return Type

Character

Default

IMPulse


CALCulate<cnum>:TRANsform:TIME:ALIGnment <enum> 

Applicable Models: N522xB, N523xB, N524xB, M937xA, P937xA

(Read-Write) Selects the way the PNA computes the DC value of the frequency-domain measurement. The correct DC value is required for inverse-FFT accuracy, and if not estimated properly, can cause distortions in the time-domain measurement in the form of an undesired slope in the waveform.

See Critical Note

Parameters

 

<cnum>

Channel number of the measurements to be listed. If unspecified, <cnum> is set to 1.

<enum>

Choose from:

LEGacy - The DC value is extrapolated using three data points. The transform offset is calculated using the delay of the first frequency point. This is the same algorithm used in the HP 8510 network analyzer.

NORMalize - The DC value is extrapolated using three data points. The transform offset is set to zero at t=0 minus six rise-times. This mode requires that a good S-parameter calibration has been performed, which can be verified by observing a flat time-domain response at t=0 when measuring a load located at the physical point corresponding to t=0. Setting the time domain trace to zero at a time before t=0 stabilizes the trace for determining impedances after time t=0, resulting in improved behavior compared to Legacy mode. This method is similar to that used with PLTS, and is very useful in determining the time-domain-transform response of transmission lines and printed-circuit-board characteristics.

Examples

CALC:TRAN:TIME:ALIG NORM
calculate2:transform:time:alignment?

Return Type

Enumeration

Default

LEGacy


CALCulate<cnum>:TRANsform:TIME[:TYPE] <char>

Applicable Models: N522xB, N523xB, N524xB, M937xA, P937xA

(Read-Write) Sets the type of time domain measurement.

See Critical Note

Parameters

 

<cnum>

Channel number of the measurement. There must be a selected measurement on that channel. If unspecified, <cnum> is set to 1.

<char>

Type of measurement. Choose from:
LPASs
- Lowpass; Must also send CALC:TRAN:TIME:LPFRequency before calibrating.
BPASs
- Bandpass;

BPASs can only be used when CALC:TRAN:TIME:STIM is set to IMPulse. (BPASs cannot be used with :STIM = STEP)

:STIM STEP will set :TYPE to LPASs

:TYPE BPASs will set :STIM to IMPulse

Examples

CALC:TRAN:TIME LPAS
calculate2:transform:time:type bpas

Query Syntax

CALCulate<cnum>:TRANsform:TIME[:TYPE]?

Return Type

Character

Default

BPAS