124    WM-OM-E Rev I 
Persistence Time 
You can control the duration of persistence by setting a time limit, in seconds, after which 
persistence data will be erased: 0.5 s, 1 s, 2 s, 5 s, 10 s, 20 s, or infinity.  
Locking of Traces 
The instrument gives you the choice of constraining all input channels to the same mode, saturation 
level, persistence time, and last trace display, or setting these for each input channel individually. 
Choose 
 to constrain input channels. Choose   to set up input 
channels individually. 
To Set Up Persistence 
1.  In the menu bar touch Display, then touch Persistence Setup... in the drop-down menu. 
2. Touch the Persistence On checkbox. If Per Trace is selected, touch the Reset All button 
to return all input channel setups to their default settings. 
3. Touch the All Locked button if you want to set the same mode, saturation level, 
persistence time, and last trace display for all input channels. Touch the Per Trace button  
to set these for each input channel individually. 
A.  If you selected All Locked, touch one of the mode buttons 
.  
B.  Then touch the Show last trace checkbox if you want the last trace displayed. 
C. Touch inside the Saturation data entry field and enter a whole number integer, 
using the pop-up numeric keypad. 
D. Touch inside the Persistence time data entry field and make a selection from the 
pop-up menu. 
4.  If you selected Per Trace, for each input channel touch its tab, then make selections of 
mode, saturation level, persistence time, and last trace display in the same way as for All 
Locked. 
5.  To create a 3-dimensional view, touch the 3d button 
. Then 
A. Touch inside the Saturation data entry field and enter a whole number integer, 
using the pop-up numeric keypad. 
B. Touch inside the Persistence time data entry field and make a selection from the 
pop-up menu.