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Use the front-panel channel buttons to turn the source waveform display off so that the
waveform does not obscure the histogram. Data accumulation continues whether the
waveform display is on or off.
The instrument can perform up to eight automated statistical measurements on the histogram.
Allow the histogram to accumulate data for a while, and then turn on the desired
measurements.
You can use Fast Acquisitions mode with histograms. However, only one or two channels can
be displayed. If three or more channels are displayed, the Fast Acquisitions mode is turned
off. The Fast Acquisition mode is automatically turned back on when you select fewer than
three channels.
Delay Measurement Setup
Access this control window by clicking Delay under the Time tab in the Measurement Setup
control window, or from the Measure menu Time submenu.
Overview
Use the Delay Measurement Setup control window to set up the instrument to measure the delay
between two waveforms.
To Use
Select the source waveforms from the Channel Selector tabs. Use the other controls in the control
window to select the Delay Edges, Mid Reference point, Mid2 Reference point, and to specify the
search (Delay) direction. Click Ok to add the measurement to the measurement list, or click
Cancel to cancel the measurement and return to the Measurement Setup control window.
Behavior
This timing measurement is the time between the midreference crossing of two different
waveforms, or the gated region of the waveforms.
The graphic in the control window shows the points on the waveforms from which the delay
measurement will be taken. The graphic is updated each time you change the control settings. The
Delay direction controls only apply to Source 2. When you click Forward, the instrument starts
searching for the desired edge at the beginning of the record. When you click Backwards, the
instrument starts searching for the desired edge from the end of the record. If the edge for Source 1
is before the edge for Source 2, then the delay is greater than zero. Otherwise the delay is less than
zero.
Phase Measurement Setup
Access this control window by clicking Phase under the More tab in the Measurement Setup
control window or from the Measure menu More submenu.
Overview
Use the Phase Measurement Setup control window to set up the instrument to take phase
measurements.
To Use
Use the Channel Selector tabs to select the target and reference source waveforms. Then use the
Mid Reference control to specify the voltage reference point in the waveform. Click OK to add the
Summary of Contents for TDS5000B Series
Page 36: ...36 AFTDS Differential Signal Adapter...
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