Agilent - Segmented Memory Acquisition for InfiniiVision Series Oscilloscopes

Our thanks to Agilent Technologies for allowing us to reprint this article.

 

Introduction

 

If the signals that you need to capture have relatively long idle times between low-duty-cycle pulses or bursts of signal activity, then the segmented memory option for Agilent’s InfiniiVision Series oscilloscopes can optimize your scope’s acquisition memory, allowing you to capture more selective signal details with less memory. With segmented memory, the scope’s acquisition memory (up to 8 M points) is divided into multiple smaller memory segments. This enables your scope to capture up to 2,000 successive single-shot waveforms with a very fast re-arm time - without missing any important signal information.

 

After a segmented memory acquisition is performed, you can easily view all captured waveforms overlaid in an infinite-persistence display and quickly scroll through each individual waveform segment. And with a minimum 10 ps time-tagging resolution, you will know the precise time between each captured waveform segment. Common applications for this type of oscilloscope acquisition include high-energy physics measurements, laser pulse measurements, radar burst measurements, and packetized serial bus measurements.

 

Even in applications that don’t actually require segmented memory acquisition to optimize memory, using segmented memory acquisition on Agilent’s InfiniiVision oscilloscopes can enhance post-analysis navigation through low-duty-cycle signals, burst signals, and serially packetized signals. And the Agilent InfiniiVision Series oscilloscopes are the only scopes in the industry that not only provide segmented memory acquisitions simultaneously on all analog channels (up to four analog channels) and logic channels (up to 16 digital channels) of acquisition, but they also are the only scopes that provide hardware-based serial decoding on packetized serial data for each captured waveform segment.

 

High-Energy Physics and Laser Pulse Applications

 

Segmented memory acquisition in an oscilloscope is commonly used for capturing electrical pulses generated by high-energy physics (HEP) experiments, such as capturing and analyzing laser pulses. With segmented memory acquisition, the scope is able to capture every consecutive laser pulse (up to a maximum of 2,000 pulses), even if the pulses are widely separated...

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