Vertical Setups Enhanced Bandwidth
NOTE. For ≥3.5 GHz instrument models, the DSP filter on each channel provides magnitude and
phase compensation of the analog bandwidth to provide more accurate signal fidelity for high-speed
measurements
. Digital Filtering (DSP) Enabled provides low-pass bandwidth filtering only to reduce
noise. Refer to your oscilloscope Specifications for a list of bandwidth enhancements available for each
vertical scale setting on your instrument.
The bandwidth enhance filter does not operate in FastAcq m ode.
Behavior
Enhanced bandwidth, when enabled, applies independent DSP filtering to four channels.
The following settings are available:
Digital Filters (DSP) Enabled. Enables the selected channel to automatically use the Digital Signal
Process (DSP) filter. T he BW indicator
(see page 496) appears in the readouts when Enhanced
Bandwidth is active. The BW indictor will appear in reverse video
(see page 496) if the user requested
bandwidth cannot be achieved.
Force Constant Sample Rate. The instrument takes the constant sample rate that you set in the
Horizontal control window, and applies a sample rate supported by DSP. It then enables DSP and
selects the appropriate bandwidth.
Analog Only. Disables the DSP filter for the selected input channel.
Apply to All Channels. Applies the DSP settings of the active channel to all channels simultaneously.
TIP. To enable or disable DSP filtering for all channels at once, click the Apply to All Channels button
after turning the Enhanced Bandwidth feature on or off.
NOTE. You may want to turn the DSP filter off to take advantage of the full analog bandwidth for analyzing
and debugging multiple-lane serial devices. DSP Enabled is the Default setting.
What do you want to do next?
Learn m ore about bandwidth enhancement. (see page 679)
Enhanced Bandwidth Indicator
Reverse Video Bandwidth Indicator
496 DSA/DPO70000D, MSO/DPO/DSA70000C, DPO7000C, and MSO/DPO5000 Series
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