User manual

Mask Testing
R&S
®
RTO
218User Manual 1316.0827.02 ─ 06
as mask. If the line is in the upper half of the display, the region above the line becomes
the mask (upper region). If the line is in the lower half, the region below the line is taken
(lower region).
To create a mask numerically in the dialog box
The settings mentioned here are described in detail in chapter 8.3.2.1, "Mask Definition:
User Mask", on page 227.
1. Press the MASKS key on the front panel.
2. Select the "Mask Definition" tab.
3. Create a new mask test:
a) Tap the "+"-icon in the lower left corner.
b) Enter a name for the new mask test.
A new, empty tab for the mask test appears.
4. Check the horizontal and vertical units and adjust them, if necessary.
5. In the "Mask segments" area, tap "Insert" to create a new mask segment.
6. Set the corner points of the mask segment:
a) In the "Definition of segment" area, tap "Insert".
Point 1 appears.
b) Tap the X-cell and enter the X-value of the point.
c) Tap the Y-cell and enter the Y-value of the point.
d) To insert the next point:
● Tap "Insert" to add a point before the selected point.
● Tap "Append" to add a point at the end of the list.
e) Set the X- and Y-values for this point.
f) Repeat the last two steps until all points are defined.
8.2.1.2 Modifying User Masks
To change an existing mask definition, you can also use the graphical method on the
touch screen, or the numerical way, or combine both.
With the graphical method, you can:
●
Move, add, and delete segments
●
Move and delete points
Adding points to an existing segment graphically is not possible.
With the numerical method, in the "Mask Definition" tab, you have all modification pos-
sibilities. You can delete and add points and segments, change the coordinates, and also
stretch a segment, or move it by adding an offset.
To add a mask segment on the touch screen
1. Tap a mask segment of the mask test that you want to complement.
Working with Masks