Basic Operation
standard video signal will be triggered. The trigger
coupling is preset to AC.
Source
CH1
CH2
EXT
EXT/5
Select the input source as the trigger signal. Ext and
Ext/5 use the signal applied to the EXT TRIG connector
as the source.
Polarity
Normal
Inverted
Normal: Triggers on the negative edge of the sync
pulse.
Inverted: Triggers on the positive edge of the sync
pulse.
Sync
All Lines
Line Number
Odd Field
Even Field
All Fields
Choose a proper video sync. When selecting Line
Number for the Sync option, you may use the User
Select knob to specify a line number.
Standard
NTSC
PAL/SECAM
Choose a video standard for sync and line number
count.
Note: When you choose Normal Polarity, the trigger always occurs on negative-going sync
pulses. If the video signal contains positive-going sync pulses, use the Inverted Polarity
option.
Pulse Width Trigger
You can use it to trigger on aberrant pulses.
Options
Settings
Comments
Pulse
With Pulse highlighted, the trigger occurs on pulses that
meet the trigger condition (defined by the Source, When
and Set Pulse Width options).
Source
CH1
CH2
EXT
EXT5
Select the input source as the trigger signal.
When
=
≠
<
>
Select the trigger condition.
Set Pulse
Width
20ns to 10.0sec
With Set Pulse Width highlighted by pressing F4, turn the
multi-functional knob to set the pulse width.
Polarity
Positive
Negative
Select to trigger on positive or negative pulses.
Mode
Auto
Normal
Select the type of trigger. The Normal mode is best for
most pulse width trigger applications.
Coupling
AC
Select the components of the trigger signal applied to the
DSO5000 Series Digital Storage Oscilloscope User Manual 32
