R&S ZVL GUI Reference
Channel Menu
Operating Manual 1303.6580.32-06
230
Delay
Opens a dialog to define the length offset parameters for the physical test ports as delays. The dialog also
contains the DC loss, the loss at the reference frequency Loss(f
ref
); and the reference frequency f
ref
; see
Loss parameters: Definition above.
The dialog provides the following additional control elements:
• Select Cable Type opens a dialog to use the parameters of a standard (predefined) cable type or
add a cable type with arbitrary parameters.
• If Same Offset Line Characteristics at All Ports is selected, the selected cable type is applied to all
ports.
Remote control:
[SENSe<Ch>:]CORRection:EDELay<port_no>[:TIME]
[SEN
Se<Ch>:]CORRection:LOSS<port_no>
[SENSe<Ch>:]CORRection:LOSS<port_no>:FREQuency
[SENSe<Ch>:]CORRection:LOSS<port_no>:OFFSet
Auto Length
Adds an electrical length offset to the active test port with the condition that the residual delay of the active
trace (defined as the negative derivative of the phase response) is minimized across the entire sweep
range. If Delay is the selected trace format, the entire trace is shifted in vertical direction and centered
around zero. In phase format, the Auto Length corrected trace shows the deviation from linear phase. The
effect of a dispersive connector type (i.e. a waveguide; see Offset Model dialog) assigned to the receiving
port of the measured quantitiy is taken into account.
If the active trace shows an S-parameter S
ij
, then Auto Length adds a length offset at port i.
Preconditions for Auto Length, effect on measured quantities and exceptions
Auto Length is enabled if the measured quantity contains the necessary phase information as a
function of frequency, and if the interpretation of the results is unambiguous:
• A frequency sweep must be active.
• The measured quantity must be an S-parameter, a converted impedance or a converted
admittance.
The effect of Auto Length on S-parameters is to eliminate a linear phase response as described
above. The magnitude of the measured quantity is not affected. Converted admittances or
impedances are calculated from the corresponding Auto Length corrected S-parameters. Stability
factors are not derived from a single S-parameter, therefore Auto Length is disabled.
Use Zero Delay at Marker to set the delay at a special trace point to zero.
Remote control:
[SENSe<Ch>:]CORRection:EDELay<port_no>:AUTO ONCE
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