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Advanced trigger types for scopes

09 August 2007

Pico Technology, designers and manufacturers of PC Oscilloscopes, have just added a set of advanced trigger types to the PicoScope 5000 series scopes to make it easier to trigger on complex waveforms.

The PicoScope 5000 series PC Oscilloscopes are Pico’s top-performing scopes, with the world’s fastest real-time sampling rate, for a USB PC scope, of 1 GS/s. This, together with a probe-tip bandwidth of 250 MHz, makes them ideal for use with high-speed analogue and digital signals. The scope’s huge memory buffer - either 32 M or 128 M samples depending on the version - ensures that the high sampling rate can be used on a wide range of timebases without losing detail.

The new advanced trigger types are part of a continuing programme of upgrades for the PicoScope 5000 series scopes, which has recently seen the addition of an auto-setup command and a new spectrum view. The new trigger types are dual-edge, window, pulse-width, drop-out, interval and logic triggering. Window triggering detects when signals go into or out of a given range, so is useful for finding overvoltages. Pulse-width triggering can recognise short or long pulses, so helps you find glitches and timing violations. The drop-out trigger finds the moment when a repetitive signal, such as a clock, goes dead. Interval triggering detects when two successive clock edges fail to meet a timing condition. Finally, logic triggering lets you trigger on practically any combination of up to four input levels or voltage windows.

If you’re troubleshooting digital signals, you will be able to use these new trigger types to obtain a stable display of complex digital waveforms such as serial data streams and control signals. The PicoScope 5000 series scopes are ideal instruments for digital troubleshooting because of their high sampling rate and large buffer size, which when used together, allow you to capture long-duration snapshots with high time resolution.

Alan Tong, managing director of Pico Technology, said “This is the latest in a series of improvements to the PicoScope 5000 series scopes and the PicoScope 6 software. Our customers can expect regular free upgrades to PicoScope 6 as we learn more about what they need from our products.”

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