Tektronix TPS2000 Series User Manual page 242

Appendix A: Specifications
Oscilloscope Specifications (Cont.)
Trigger Frequency Counter
Readout Resolution
Accuracy (typical)
Frequency Range
Signal Source
A- 10
6 digits
±51 parts per million including all frequency reference errors and
±1 count errors
AC coupled, 10 Hz minimum to rated bandwidth
Pulse Width or Edge Trigger modes: all available trigger sources
The Frequency Counter measures trigger source at all times in
Pulse Width or Edge modes, 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.
TPS2000 Series Digital Oscilloscope User Manual