2
Scope Features and Functions
42
U2701A/U2702A Modular Oscilloscopes User’s Guide
Trigger Settings
The oscilloscope provides three trigger modes: edge, pulse, and
TV. Pulse width trigger is used to find pulses with certain pulse
widths. TV is used to trigger on fields or lines for standard video
waveforms.
Edge Trigger
Edge trigger can be used with analog and digital circuits. An
edge trigger occurs when the trigger input passes through a
specified voltage level with the specified slope.
Table 2-2
Edge Trigger menu
Edge 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
External
Sets External as the trigger source
Settings
Level
Sets the voltage point on the waveform where
trigger occurs
Holdoff
Sets the waiting period before starting a new trigger
Trigger
Settings
Rising
Trigger on rising edge
Falling
Trigger on falling edge
Alternate
Trigger on alternate edge
Either
Trigger on either edge
Coupling
DC
Sets the input coupling to DC
AC
Sets the input coupling to AC
U2700A_Modular_Scope.book Page 42 Tuesday, May 6, 2008 9:32 AM
