Delta MS250 Manual do Operador descarregar pdf (Página 8)

Operator's Manual

Introduction

The MS-250 Mixed Signal Oscilloscope Option is a complete system that adds digital

acquisition and triggering capabilities to a Teledyne LeCroy oscilloscope.

Once properly connected to the oscilloscope and the device under test, you will be able to

use the oscilloscope user interface for the following:

l Digital Logic Control: Set the logic threshold and hysteresis for each lead bank,

choosing from standard logic families or entering a custom setting.

l Digital Group Management: Combine individual digital lines into bus groups to be

managed together. Give lines descriptive logical names, regardless of the physical

lead number.

l Digital Analysis: Display digital signals as single line traces or collapsed bus traces.

Many of the same tools available for analyzing analog signals may be applied to

digital signals.

l Digital and Combined Triggering: Choose to set an acquisition trigger on a digital

signal pattern or a combination of conditions using both analog and digital signals.

The MS-250 is ideally suited for embedded controller testing where there is a proliferation

of analog signals coincident with digital signals. You can easily debug signals using

standard oscilloscope tools such as cursors, measurement parameters, and zooming.

Oscilloscopes compatible with the MS-250 feature large, bright color displays to facilitate

signal viewing, plus all the connectivity and documentation capabilities needed to quickly

record and distribute information.

Technical Overview

The MS-250 is an external device that digitally samples waveform data at up to 1 GS/s

(for 250 MHz digital signals). Unlike a logic analyzer, it operates only in a Timing Analysis

mode, so it requires 4x oversampling to determine the correct digital edge position, and

does not require the user to input a clock.

While in SINGLE, NORMAL, or AUTO trigger mode, the MS-250 repeatedly samples each

digital channel’s voltage level. If the voltage is greater than the threshold voltage, the MS-

250 stores a 1 in internal memory. Otherwise, a 0 is stored.

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Delta MS250 Manual do Operador Página 8