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label at the top of the screen, as shown in the figure below. The information will

change based on the trigger settings.

Source Selection

Click or tap the Source drop-down button to select CH1-CH4. For details, refer to

Trigger Source

. The selected trigger source is indicated in the trigger information

label at the top of the screen.

Only when you select the channel that has signal inputs as the trigger source, can you

obtain a stable trigger.

Video Polarity

In the

Polarity item, select the desired polarity: positive polarity ( ) or negative

polarity ( ).

Video Standard

Click or tap the drop-down button of

Standard to select the desired video standard.

Table 8.1 Video Standard

Video Standard

Frame Frequency

(Frame)

Scan Type TV Scan Line

NTSC 30 Interlaced Scan 525

PAL/SECAM 25 Interlaced Scan 625

480p/60Hz 60 Progressive Scan 525

576p/50Hz 50 Progressive Scan 625

720p/60Hz 60 Progressive Scan 750

720p/50Hz 50 Progressive Scan 750

720p/30Hz 30 Progressive Scan 750

720p/25Hz 25 Progressive Scan 750

720p/24Hz 24 Progressive Scan 750

1080p/60Hz 60 Progressive Scan 1125

1080p/50Hz 50 Progressive Scan 1125

1080p/30Hz 30 Progressive Scan 1125

1080p/25Hz 25 Progressive Scan 1125

1080p/24Hz 24 Progressive Scan 1125

1080i/60Hz 60 Interlaced Scan 1125

1080i/50Hz 50 Interlaced Scan 1125

Triggering the Oscilloscope

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