Vertical Setups Deskew/Attenuation Control Window
Deskew/Attenuation Control Window
From the Vertical menu, select Deskew or Attenuation.
Overview
Use the Deskew/Attenuation control window to compensate for propagation delays of d ifferent length
probes and t
o set the input/output ratio of any external attenuation or gain between the signal and input
channels.
To use
Use the Deskew/Attenuation controls to change the settings after you set up the Vertical Setup Control
Window (see page 481).
Deskew.
1. Connect the probes to a signal source.
2. Use the horizontal and vertical controls to center the f astest signal on the screen.
3. Click a Ch <1–4> button to select the slower channel.
4. Click in the Deskew Time entry box, and use a multipurpose knob to adjust the deskew time so
the two signals align.
5. To clear the d eskew value, click the Set To 0.0s button.
Each input channel has its own deskew settings. Deskew compensates individual channels for probes o r
cables of different lengths. The instrument applies the delay values after each completed acquisition. The
deskew values are saved as part of the instrument setup. The deskew values for the selected channel will
be retained until you change the probe, you restore a saved setup, or you recall the factory setup.
Attenuation.
1. Click a Ch <1–4> button to select the vertical input channel for the attached probe.
2. To set the external attenuation a s a multiplier or ratio, click in the External Atten entry box and use a
multipurpose knob to enter a value.
3. To set the external attenuation as d B values, click in the External Atten (dB) entry box and use a
multipurpose knob to enter a value.
4. To set the external attenuation to the default value, click Set to Unity.
DSA/DPO70000D, MSO/DPO/DSA70000C, DPO7000C, and MSO/DPO5000 Series 493
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