# Pulse Count

Pulse Count counts the number of positive or negative pulses in the waveform.

Use the measurement threshold controls to set the middle threshold. Pulses are then portions of the waveform that cross this middle threshold twice (on a rising edge and then a falling for a positive pulse or on a falling edge and then a rising edge for a negative pulse).

When measuring over the waveform, the Pulse Count measurement is made on all the pulses of the waveform including any pulses that are not in the waveform window. When measuring in a region, the Pulse Count measurement is made on all the pulses inside the region only.

## Configurable Measurement Parameters

This measurement is affected by the following settings (choose Measure > Thresholds...):

- Thresholds tab

## To measure

1. Click the toolbar's Time tab.
2. If necessary, click the toolbar's More buttons to locate the Pulse Count button, and click it.
3. Select the signal on which to make the measurement.
4. Select the Region in which to make the measurement:
   - Displayed Waveform — is what you see in the waveform window (which can be a zoomed-in view of the complete waveform).
   - Entire Waveform — specifies the complete waveform.
   - Region N — If regions are enabled for the selected signal, you can select one of those regions.
5. Select the pulse direction to count Positive or Negative pulses.

## SCPI Command

`:MEASure:HORizontal:PCOunt`