GUI Reference
R&S
®
ZNB/ZNBT
550
User Manual 1173.9163.02 ─ 38
Ref Val = Marker / Max = Marker / 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 opera-
tion 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 variable 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 influen-
ces the entire channel.
Remote command:
n/a
5.14.9 Info Field Tab
Displays or hides the marker info field and selects it contents. The functions are self-
explanatory.
Background information
Marker Softtool
