Hantek DSO1000E Series User Manual page 32

NOTE: Trigger coupling only affects the signal passed through the trigger system. It does
not affect the bandwidth or coupling of the signal displayed on the screen.
Video Trigger
Options
Video
CH1
Source
CH2
Normal
Polarity
Inverted
All Lines
Line Number
Sync Odd Field
Even Field
All Fields
NTSC
Standard
PAL/SECAM
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
Pulse
CH1
Source
CH2
Polarity Positive, Negative
Auto
Mode Normal
Single
AC
DC
Coupling Noise Reject
HF Reject
LF Reject
=
≠
When
<
>
Pulse Width 20ns to 10.0sec
50%
Trigger When: The pulse width of the source must be ≥5ns so that the oscilloscope can detect the
DSO1000E Series HandHeld Oscilloscope User Manual
Settings
With Video highlighted, an NTSC, PAL or SECAM
standard video signal will be triggered. The trigger
coupling is preset to AC.
Select the input source as the trigger signal.
Normal: Triggers on the negative edge of the sync
pulse.
Inverted: Triggers on the positive edge of the sync
pulse.
Choose a proper video sync. When selecting Line
Number for the Sync option, you may use the User
Select it to specify a line number.
Choose a video standard for sync and line number
count.
Settings
With Pulse highlighted, the trigger occurs on pulses that
meet the trigger condition (defined by the Source, When
and Set Pulse Width options).
Select the input source as the trigger signal.
Select the type of trigger. The Normal mode is best for
most pulse width trigger applications.
Select the components of the trigger signal applied to the
trigger circuit.
Select the trigger condition.
With Set Pulse Width highlighted, set the pulse width.
Basic Operation
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