Tektronix TDS1000- Uživatelský manuál stáhnout pdf (Strana 178)

Appendix A: Specificati ons

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.

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