User manual

WaveSurfer 3000 Oscilloscopes

5. Optionally, set a measurement gate by entering the Gate Start and Stop divisions or dragging the gate

posts from the far left and right edges of the grid to reposition them.

6. Choose to display Statistics orHisticons on the measurement readout table.

Gating Measurements

By using gates, you can narrow the span of the waveform on which to perform parameter measurements,

allowing you to focus on the area of greatest interest. For example, if you "gate" five rising edges of the

waveform, the parameter calculations for rise time are performed only on the five pulses bounded by the

gate posts.

The default starting positions of the gate posts are 0 div and 10 div, which coincide with the left and right

ends of the grid. The gate, therefore, initially encloses the entire waveform.

The quickest way to set a gate is to drag the gate posts located at the far left and right of the grid to the

desired positions. You can refine this setting by specifying a position down to hundredths of a division in the

Gate Start and Stop fields on the Measure dialog dialog. All parameters share the same gate.

Touch the Default button to return gates to the width of the trace.

Viewing Statistics

You can add the statistical measures value(last), mean, min., max., sdev, and num(ber of measurements

computed) to the measurement parameter readout table by checking Statistics On.You can also choose

Measure > Statistics from the menu bar.

The num statistic is the number of measurements computed. For any parameter that computes on an entire

waveform (like amplitude, mean, minimum, maximum, etc.) the value displayed represents the number of

sweeps.

For any parameter that computes on every event, the value displayed is equal to the number of events per

acquired waveform. If x waveforms were acquired, the value represents x times the number of cycles per

waveform. The value(last) statistic is equal to the measurement of the last cycle on the last acquisition.

To reset the statistics counter, touch Clear Sweeps on the display or front panel.

Viewing Histicons

Histicons are miniature histograms of measurement parameters that appear on the measurement table.

These thumbnail histograms let you see at a glance the statistical distribution of each parameter. Select the

Histicons checkbox to turn on histicons.