What are reasonable trigger thresholds? How small a signal will trigger the oscilloscope?

Question:

What are reasonable trigger thresholds? How small a signal will trigger the oscilloscope?

Answer:

There are two specifications for trigger level: trigger level range and trigger level sensitivity. Both are written in terms of divisions. The trigger level range at any volts/division setting should be larger than the full scale range to allow examining waveform features that may be at a much different level than the desired trigger point. Trigger sensitivity defines the smallest waveform that will generate a stable trigger. Most Tektronix oscilloscopes will trigger on a signal of 0.35 divisions at up to 50 or 100 MHz.

This FAQ Applies to:

Product: TDS794D, TDS684B, TDS420A, TDS430A, TDS460A, TDS724D, TDS754D, TDS784D, TDS520D, TDS540D, TDS580D, TDS620B, TDS644B, TDS680B

FAQ ID : 61086

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