1. Positive and Negative Pulse Width
Positive pulse width measures the time between a rising edge and the next falling edge of the signal. Negative pulse width measures the time between a falling edge and the next rising edge of the signal.
The selected trigger slope is the start trigger slope. The Analyzer automatically selects the inverse polarity as stop slope.
This is not a back-to-back measurement, meaning that there is a dead-time of 50 ns between the samples. 2 signals can be measured in parallel. Up to 16 million samples total can be measured in a single measurement session.
2. Positive and Negative Duty Cycle
Duty cycle (or duty factor) is the ratio between pulse width and period time. The Analyzer determines this ratio by simultaneously making a pulse width measurement and a period measurement, and calculates the duty factor as:
This is not a back-to-back measurement, meaning that there is a dead-time of 50 ns between the samples. 2 signals can be measured in parallel. Up to 16 million samples total can be measured in a single measurement session.
3. Rise Time, Fall Time, Rise-Fall Time
By convention, rise/fall time measurements are made with the trigger levels set to 10% (start) and 90% (stop) of the maximum pulse amplitude. For ECL circuits, the reference levels are instead nominally 20 % (start) and 80 % (stop). In this case one can use Relative Trigger Levels mode and set trigger levels to 20% and 80% respectively.
These are not a back-to-back measurement, meaning that there is a dead-time of 50 ns between the samples.
Rise Time and Fall Time functions can measure up to 2 signals in parallel with up to 16 million samples per session total.
Rise-Fall Time function can measure only 1 signal but provides both rise and fall time at once. Up to 8 million samples total can be measured in one measurement session.
4. Positive and Negative Slew Rate
Slew rate is the speed of voltage change on pulse positive or negative edge. Hence, Positive and Negative Slew Rate are based on Rise Time and Fall Time measurements, the following formulae are applied:1.1.1. Positive and Negative Slew Rate
