OWON TDS Series User Manual

Page 38

5.Advanced User Guidebook

Coupling

AC
DC

Block the direct current component.
Allow all component pass.
Block the high-frequency signal, only low-frequency
component pass.
Block the low-frequency signal, only high-frequency
component pass.

Slope

Rising

Falling

Trigger on rising edge
Trigger on falling edge

Mode

Holdoff

Auto

Normal

Single

Holdoff

Reset

Acquire waveform even no trigger occurs
Acquire waveform when trigger occurs
When trigger occurs, acquire one waveform then stop
100ns~10s, turn the G knob to set time interval before
another trigger occur.
Set Holdoff time as default value (100ns).

2. Video Trigger

Choose video trigger to trigger on fields or lines of NTSC, PAL or SECAM standard
video signals.

The description of the Video Trigger Menu is as follows:

MENU

SETTING

INSTRUCTION

Trigger

Mode

Video

Set vertical channel trigger type as video trigger

Source

①
②
③
④

Channel 1 as trigger signal.
Channel 2 as trigger signal.
Channel 3 as trigger signal.
Channel 4 as trigger signal.

Modu

NTSC

PAL

SECAM

Select video modulation

Sync

Line

Field

Odd

Even

Line NO.

Synchronic trigger in video line
Synchronic trigger in video field
Synchronic trigger in video odd filed
Synchronic trigger in video even field
Synchronic trigger in designed video line, turn the G
knob to set the line number

Mode

Holdoff

Auto

Holdoff

Reset

Acquire waveform even no trigger occurred
100ns~10s, adjust the G knob to set time interval
before another trigger occur
Set Holdoff time as 100ns

3. Pulse Width Trigger

Pulse trigger occurs according to the width of pulse. The abnormal signals can be
detected through setting up the pulse width condition.