Rohde & Schwarz 1145.1010.04/05/06, Operating Manual

Page: 574 / 813

CALCulate R&S
®
ZVA/ZVB/ZVT
1145.1084.12 6.112 E-6
Parameters KFSTop – Keep stop frequency and number of points
KDFRequency – Keep frequency gap and number of points
KSDFRequency – Keep stop frequency and approximate
frequency gap
*RST value –
SCPI, Command
Types Device-specific, no query (the command causes an event)
Example:
See CALCulate<Ch/Tr>:TRANsform:TIME[:TYPE]
CALCulate<Ch/Tr>:TRANsform:TIME:LPASs:DCSParam <numeric_value>
Defines the DC value for low pass transforms. The command is enabled only if the sweep points are on
a harmonic grid (to be set explicitly or using
CALCulate<Ch/Tr>:TRANsform:TIME:LPASs
).
<Ch/Tr> Channel number used to identify the active trace
<numeric_value> DC value of the measured quantity
Range [def. unit] Depending on the measured quantity (–1 to +1 for S-parameters)
*RST value 0
SCPI, Command
Types Device-specific, command or query
Example:
*RST; CALC:TRAN:TIME:STAT ON
Reset the instrument, activating a frequency
sweep with S
21
as measured quantity, and enable
the time domain transformation for the default
trace.
CALC:TRAN:TIME LPAS; TIME:STIM STEP
Select a low pass step transformation.
CALC:TRAN:TIME:LPAS KFST
Calculate a harmonic grid, keeping the stop frequency and the
number of points.
CALC:TRAN:TIME:LPAS:DCSP 0.2
Set the DC value.
CALC:TRAN:TIME:LPAS:DCSP:EXTR;
CALC:TRAN:TIME:LPAS:DCSP?
Extrapolate the measured trace, overwrite the defined DC value,
and query the new value.
CALC:TRAN:TIME:LPAS:DCSP:CONT ON
Switch over to continuous extrapolation (e.g. because you noticed
a discrepancy between the manually entered DC value and the
extrapolation and assume the extrapolation to be more
trustworthy).