Specifications 
DSO4000 Series Digital Storage Oscilloscope     71 
Same as the DC-coupled limits for frequencies above 
150kHz; attenuates signals below 150kHz 
± 8  divisions from center of screen 
Trigger Level 
Accuracy, typical 
(Accuracy is for 
signals having rise 
and fall times ≥20ns) 
0.2div  ×  volts/div  within  ± 4   divisions  from  center  of 
screen 
± (6% of setting + 200mV) 
Set Level to 50%, 
typical 
Operates with input signals ≥50Hz 
Note: Bandwidth reduced to 6MHz when using a 1X probe. 
Peak-to-peak amplitude of 2 divisions 
Signal  Formats  and 
Field  Rates,  Video 
Trigger Type 
Supports NTSC, PAL  and SECAM broadcast systems for  any field or 
any line 
 
Trigger when < (Less than), > (Greater than), = (Equal), or ≠ (Not Equal); 
Positive pulse or Negative pulse 
Pulse Width Trigger 
Point 
Equal:  The  oscilloscope  triggers  when  the  trailing  edge  of  the  pulse 
crosses the trigger level. 
Not Equal: If the pulse is narrower than the specified width, the trigger 
point is the trailing edge. Otherwise, the oscilloscope triggers when a 
pulse continues longer than the time specified as the Pulse Width. 
Less than: The trigger point is the trailing edge. 
Greater  than  (also  called  overtime  trigger):  The  oscilloscope  triggers 
when  a  pulse  continues  longer  than  the  time  specified  as  the  Pulse 
Width. 
Selectable from 20ns to 10s 
Trigger when < (Less than), > (Greater than), = (Equal), or ≠ (Not Equal); 
Positive slope or Negative slope 
Equal: The oscilloscope triggers when the waveform slope is equal to 
the set slope. 
Not Equal:  The  oscilloscope triggers  when the  waveform  slope is  not 
equal to the set slope.