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Scope Features and Functions
2
U2701A/U2702A USB Modular Oscilloscopes User’s Guide
45
3
Select the trigger level by adjusting the knob or by clicking on
or
.
4
Select the desired polarity on the Pulse Width Trigger
Settings panel.
5
Select the preferred time qualifier by selecting the range
from the Mode drop- down list.
6
Enter the desired range value and unit then click on Set.
TV Trigger
TV triggering is used to trigger on fields or lines of NTSC, PAL,
or SECAM standard video waveforms. When
TV
is selected, the
trigger coupling is set to
AC
.
Table 2-4
TV Trigger Menu
TV Trigger Panel Controls
Menu
Settings
Comments
Trigger
Mode
Auto
Able to acquire waveform even when no trigger
occurs
Normal
Acquires waveform only when trigger occurs
Source
Channel 1
Sets Channel 1 as the trigger source
Channel 2
Sets Channel 2 as the trigger source
U2700A_Modular_Scope.book Page 45 Tuesday, May 6, 2008 9:32 AM