SDA Operator’s Manual
Bandwidth Limit
Reducing the bandwidth also reduces the signal and system noise, and prevents high frequency
aliasing.
To set bandwidth limiting
1. In the menu bar, touch Vertical, then select a channel from the drop-down menu.
2. Touch inside the Bandwidth field and select a bandwidth limit value from the pop-up menu.
The options are
• Full (all X-Stream scopes)
• 4 GHz (WaveMaster 8600A/8500A, DDA-5005A, SDA)
• 3 GHz (WaveMaster 8600A/8500A/4000A/4020, DDA-5005A, SDA)
• 1 GHz (WaveMaster DSOs, DDA-5005A, SDA)
• 200 MHz (all X-Stream scopes)
• 20 MHz (all X-Stream scopes)
Linear and (SinX)/X Interpolation
Linear interpolation, which inserts a straight line between sample points, is best used to
reconstruct straight-edged signals such as square waves. (Sinx)/x interpolation, on the other
hand, is suitable for reconstructing curved or irregular wave shapes, especially when the sample
rate is 3 to 5 times the system bandwidth.
Interpolation Setup
1. Touch the button for the channel you want to set up, for example.
2. In the dialog area, touch inside the Interpolation data entry field under Pre-Processing.
"Pre-Processing" means before Math processing.
3. Touch inside the Interpolation data entry field. A pop-up menu appears offering Linear or
Sinx/x interpolation.
4. Touch the button for the type of interpolation you want.
Inverting Waveforms
Touch the Invert checkbox to invert the waveform for the selected channel.
QuickZoom
QuickZoom automatically displays a zoom of the channel or trace on a new grid.
Turning On a Zoom
Touch the Zoom button
in the channel dialog.
SDA-OM-E Rev H 69
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