Specifications 
DSO1000B Series HandHeld Oscilloscope User Manual              69 
set slope. 
Not Equal: The oscilloscope triggers when the waveform slope is not 
equal to the set slope. 
Less than: The oscilloscope triggers when the waveform slope is less 
than the set slope. 
Greater than: The oscilloscope triggers when the waveform slope is 
greater than the set slope. 
Selectable from 20ns to 10s 
The leading edge: Rising edge or Falling edge; Time Setting: 20-10s 
 
Swap Trigger   
CH1  Internal Trigger: Edge, Pulse Width, Video, Slope 
CH2  Internal Trigger: Edge, Pulse Width, Video, Slope 
 
Trigger Frequency 
Counter 
 
Readout Resolution  6 digits 
Accuracy (typical)  ±30ppm (including all frequency reference errors and ±1 count errors) 
Frequency Range  AC coupled, from 4Hz minimum to rated bandwidth 
Signal Source 
Pulse Width or Edge Trigger modes: all available trigger sources 
The Frequency Counter measures trigger source at all times, including 
when the oscilloscope acquisition pauses due to changes in the run 
status, or acquisition of a single shot event has completed. 
Pulse Width Trigger mode: The oscilloscope counts pulses of significant 
magnitude inside the 1s measurement window that qualify as triggerable 
events, such as narrow pulses in a PWM pulse train if set to < mode and 
the width is set to a relatively small time. 
Edge Trigger mode: The oscilloscope counts all edges of sufficient 
magnitude and correct polarity. 
Video Trigger mode: The Frequency Counter does not work. 
Acquisition 
Acquisition Modes  Normal, Peak Detect, and Average 
Acquisition Rate, 
typical 
Up to 2000 waveforms per second per channel (Normal acquisition mode, 
no measurement) 
Single Sequence  Acquisition Mode  Acquisition Stop Time 
  Normal, Peak Detect 
Upon single acquisition on all 
channels 
simultaneously 
  Average 
After N acquisitions on all channels 
simultaneously, N can be set to 4, 8,