Manual Operation
R&S
®
SMU200A
110Operating Manual 1007.9845.32 ─ 15
3. Configure the control and marker signals (see "Handling of Ramps" on page 110).
4. Define length of control list ("Custom Dig Mod" only).
Select the "Total List Length" entry field and press the ENTER key. Enter the length
by means of the numeric keys and confirm the entry.
The control list length is defined.
5. Zoom displayed range ("Custom Dig Mod" only) in long control lists.
To zoom the displayed area around the current "Cursor Position", select the param-
eter "Visible/Bits Visible", enter the number of symbols/bits to be displayed by means
of the numeric keys and confirm the entry.
Select the "Zoom In" button and press the ENTER key.
The selected number of symbols/bits around the current cursor position are dis-
played.
Ramps outside the displayed area are not lost by zooming.
6. Use the "Save"/"Save As..." function to save the edited control/marker list under its
current name or under a new name.
Enter the file name in the "Create File" dialog and select the directory (see chap-
ter 4.7.1, "File Select Dialog", on page 115).
Handling of Ramps
1. Set a new ramp
Use the arrow keys or use the parameter "Cursor Position" to move the cursor to the
position where the ramp is to be inserted. Press the ENTER key.
The ramp transition of the newly set ramp depends on the current status (high or low)
of the control signal. If the signal is low, a ramp with low-high transition is generated;
if the signal is high, a ramp with high-low transition is generated.
When ramps are set between existing ramps, the transition of the new ramp is also
defined by the status of the signal before the new ramp. For this reason, a ramp that
has already been set can be assigned low-low or high-high transition (as in the
example), i.e. it will have no effect on the control signal in this configuration. However,
the ramp remains saved, and its position is indicated by a dashed line.
If another change produces effective transition, this ramp will be regenerated.
2. Shift a ramp
An existing ramp can be shifted to any positions. The transitions are adjusted accord-
ingly.
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