R&S ZNB Series User Manual page 638

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R&S ZNB/ZNBT
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"Weak": Coupling is extracted even if there are 2 ports enabled on the test coupon
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"Strong" (default): If the test coupon is a 4-port file, and there are two ports to be
extracted, the ISD tool optimizes odd- and even-mode insertion losses.
The ISD tool automatically reverts to "Weak" if these conditions are not met.
Remote command:
CALCulate:FMODel:ISD:TRACe:COUPling
Operation (fast/acc) ← Calculations
Influences the speed of execution and accuracy of the ISD tool.
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"Accurate" (default): Normal execution mode
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"Fast": reduces the execution time to ~50%
Often this mode can be enabled with only little loss of accuracy.
Remote command:
CALCulate:FMODel:ISD:OPERation
Max Freq to Deembed ← Calculations
When the test coupon's return loss is not less than the insertion loss, the maximum fre-
quency to deembed together with the proper
racy.
By default, the maximum frequency is set to the maximum frequency the VNA can use.
Remote command:
CALCulate:FMODel:ISD:SCALe:FREQuency
DC Extrapolation ← Calculations
This setting is only active, if a recent version of the ISD tool (from 2019-12 or later) is
used.
If unchecked (default), the touchstone data of the generated deembedding file reach
down to the start frequency of the instrument sweep. If checked, the ISD tool adds
(extrapolated) S-parameter data for f = 0.
Remote command:
CALCulate:FMODel:ISD:DCEXtrapolat
Small Fixture ← Calculations
Enables/disables the ISD tool's small fixture mode.
Remote command:
CALCulate:FMODel:ISD:SMALlfixture
Reset to Default
Resets the settings of the "ISD Advanced Settings" to their defaults.
Remote command:
CALCulate:FMODel:ISD:PRESet
5.13.5.7 SFD Advanced Settings
Advanced settings of the SFD tool. For the analyzer firmware, these settings are
global.
User Manual 1173.9163.02 ─ 62
Offset Embed softtool
Insertion Loss setting gives the best accu-
GUI reference
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