GUI Reference
R&S
®
ZNC
209
User Manual 1173.9557.02 ─ 13
●
Span = Marker
sets the span of the sweep range equal to the absolute value of the
first coordinate of the active delta marker, i.e. to the difference between the delta
marker and the reference marker positions. The function is available only if the active
marker is in "Delta Mode". The reference marker appears at the right, the delta marker
at the left edge of the diagram or vice versa, depending on which of the two markers
has the smaller stimulus value.
Remote command:
Ref Val / Max / Min = Marker
The following functions use the response value of the active marker to scale the y-axis
of the diagram:
●
Ref Val = Marker
sets the reference value equal to the response value of the active
marker, leaving the values of the vertical divisions ("Scale / Div") unchanged.
●
Max = Marker
sets the upper edge of the diagram equal to the response value of the
active marker, leaving the values of the vertical divisions ("Scale / Div") unchanged.
●
Min = Marker
sets the lower edge of the diagram equal to the response value of the
active marker, leaving the values of the vertical divisions ("Scale / Div") unchanged.
Remote command:
n/a
Zero Delay at Marker
Corrects the measurement result by adding or subtracting a constant group delay. This
function must be applied to a trace which is displayed in group delay format. The trace
is shifted in vertical direction so that the delay at the marker position vanishes.
The delay represents the propagation time of the wave across the DUT, so this operation
corresponds to a electrical length compensation, i.e. to a shift of the reference plane by
adding to or subtracting from the test port a simulated lossless transmission line of vari-
able length. The correction must be carried out on the "Delay" trace but has an impact
on all trace formats.
A standard application of "Zero Delay at Marker" is correction of the constant delay
caused by the interconnecting cables between the analyzer test ports and the DUT (line
stretch).
Note:
"Zero Delay at Marker" modifies the "Offset" parameters and therefore influences
the entire channel.
Remote command:
n/a
4.2.6.8
Marker > Info Field
Displays or hides the marker info field and selects it contents. The functions are self-
explanatory.
Trace Settings