Getting started
R&S
®
ZNB/ZNBT
75
User Manual 1173.9163.02 ─ 62
To change the sweep range of the active channel, use one of the following methods:
●
Use the [Start], [Stop], [Center], and [Span] function keys from the Stimulus sec-
tion.
●
Double-tap (with a mouse: double-click) the "Start" or "Stop" label in the channel
list.
●
Tap and hold (with a mouse: right-click) the "Start" or "Stop" label in the channel list
and select "Start Frequency", "Stop Frequency", "Center Frequency", or "Fre-
quency Span" from the context menu.
●
Select "Start Frequency", "Stop Frequency", "Center Frequency", "Span Fre-
quency" from the "Channel" > "Stimulus" menu.
●
Use the "Set by Marker" functions (Trace – [Marker] > "Set by Marker"; see
3.3.7.3
Reference value and position
The analyzer provides three parameters for changing the scale of the vertical
(response) axis:
●
Changing the "Ref Value" or "Ref Pos" shifts the trace in vertical direction and
adjusts the labels of the vertical axis. "Ref Value" also works for radial diagrams.
●
Changing the "Scale/Div" modifies the value of the vertical or radial diagram divi-
sions and thus the entire range of response values displayed.
The "Scale/Div" and the "Ref Value" are indicated in the scale section of the trace info.
In the example below, a "Scale/Div" of 10 dB and a "Ref Value" of 0 dB is used.
To change such a scale parameter, use one of the following methods:
●
Open the Trace – [Scale] > "Scale Values" softtool tab and proceed from there.
●
Tap and hold (with a mouse: right-click) the scale section in the trace info and
select a setting from the context menu.
●
Select a setting from the "Trace" > "Scale" menu.
●
Use "Set by Marker" functions (Trace – [Marker] > "Set by Marker"; see
3.3.7.4
Auto scale
The "Auto Scale" function adjusts the scale divisions and the reference value so that
the entire trace fits into the diagram. To access "Auto Scale", use one of the following
methods:
●
Open the Trace – [Scale] > "Scale Values" softtool tab and select "Auto Scale
Trace" or "Auto Scale Diagram".
●
Tap and hold (with a mouse: right-click) the scale section in the trace info and
select "Auto Scale Trace" from the context menu.
●
Select "Auto Scale Trace" or "Auto Scale Diagram" from the "Trace" > "Scale"
menu.
Operating the instrument
