User Manual

5 To Trigger the Oscilloscope RIGOL
DS4000 User’s Guide
5-17
Video Standard:
Press Standard to select the desired video standard.
 NTSC: the field frequency is 60 fields per second and the frame frequency is 30
frames per second. The TV sweep line is 525 with the even field goes first and
the odd field follows behind.
 PAL: the frame frequency is 25 frames per second. The TV sweep line is 625
with the odd field goes first and the even field follows behind.
 SECAM: the frame frequency is 25 frames per second. The sweep line is 625
with interlacing sweep.
 HDTV: HDTV consists of 480P, 576P, 720P, 1080P and 1080I display formats.
The specified video standards are as follows:
480P
the frame frequency is 60 frames per second; the TV sweep
line is 525; line-by-line sweep; the line frequency is 31.5
KHz.
576P
the frame frequency is 60 frames per second; the TV sweep
line is 625; line-by-line sweep.
720P
the frame frequency is 60 frames per second; the TV sweep
line is 750; line-by-line sweep; the line frequency is 45 KHz.
1080P
the frame frequency is 60 frames per second; the TV sweep
line is 1125; line-by-line sweep.
1080I
the field frequency is 50 to 60 fields per second; the frame
frequency is 25 to 30 frames per second; the TV sweep line
is 1125; interlacing sweep; the line frequency is 15.25 KHz.
Trigger Mode:
Press Sweep to select the Trigger Mode (page 5-3) under this trigger type as auto,
normal or single. The corresponding status light of the current trigger mode turns on.
Trigger Setting:
Press Setting to set the trigger parameters (trigger holdoff and noise rejection)
under this trigger type.
Trigger Level:
Use TRIGGER LEVEL to modify the level. For details, please refer to the
description of “Trigger Level” on page 5-9.