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Tips
| • | The open circuit voltage of the scope's own pulse generator is 400mV. See the Pulsed Value information for the TDR Example in Table 109. |
| • | The Offset and Range options available for each channel do not affect the range and resolution of measured waveforms. However, poor selections can cause errors in the T Mode measurements described previously. |
| • | The Instrument Option `Averages' should be used with caution when making certain T Mode measurements, such as Risetime. An averaged waveform will appear to exhibit a slower transition than any single instance of the same waveform. (Consult the Front-Panel Reference for your oscilloscope.) |
In algebraic terms, the instrument returns Risetime(average(waveform)), and not average(Risetime(waveform)) when Averages >1 and a T-Mode output for Risetime is established.
Other instrument-computed pulse parameters are obtained the same way, though only the edge-speed computations suffer adverse effects.