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Appendix A: Specifications
160
TDS1000/2000-Series Digital Oscilloscope User Manual
Oscilloscope Specifications (Cont.)
Trigger Frequency Counter
Readout Resolution 6 digits
Accuracy (typical) ±51 ppm including all frequency reference errors and ±1 count
errors
Frequency Range AC coupled, 10 Hz 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 is halted 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 250 ms 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 operate.