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LeCroy Waverunner2 LT264 Series User Manual

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LTXXX2-SM-E
LeCroy Waverunner2 Series
Service Manual
Version D- December 2003
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LeCroy Waverunner2 LT264 Series Specifications

General IconGeneral
Channels4
Vertical Resolution8 bits
Input CouplingAC, DC, GND
Max Input Voltage400 V (DC + peak AC)
Trigger ModesEdge, Pulse Width
DisplayColor LCD
Display Size10.4 inches
Display TypeColor LCD
Input Impedance1 MΩ

Summary

Specifications

Vertical System Specifications

Details on bandwidth, impedance, resolution, sensitivity, and isolation.

Timebase System Specifications

Parameters for timebases, time/div range, clock accuracy, and interpolator.

Acquisition System Parameters

Sample rates, acquisition points, and acquisition modes for the instrument.

Acquisition Processing Features

Details on averaging, enhanced resolution, and envelope processing.

Triggering System Capabilities

Modes, sources, coupling, delay, and frequency limits for triggering.

Color Waveform Display

Details on the display type, resolution, screen saver, and trace management.

Rapid Signal Processing

Information on processor, processing memory, and realtime clock.

Interface and Connectivity

Details on remote control, GPIB, RS-232C, Ethernet, floppy drive, and ports.

Measure Tools

Standard automated measurements for parameters like amplitude, frequency, and delay.

WaveAnalyzer Capabilities

Features for FFT, averaging, histograms, and advanced waveform analysis.

Basic Trigger Types

Standard trigger modes including edge, slope, window, and line triggers.

SMART Trigger Types

Advanced trigger types like state/edge qualified, dropout, pattern, and TV triggers.

SMART Triggers with Exclusion

Triggers based on signal/pattern width, interval, slew rate, and runts.

Theory of Operation

Processor Board Overview

Details on the MPC603e processor, circuit blocks, and power supply.

SDRAM and Memory Access

Information on SDRAM configuration, normal, burst, and refresh access timing.

Main Board Components

Overview of the main board sections: Front End, A/D Converter, Trigger, Timebase.

Front End Circuitry

Detailed functions of the front end, including protection, attenuation, and HFE428.

Time Base System Circuits

Description of time base circuits: MCG426, MTB411A, and MST429A.

Performance Verification

Introduction to Performance Verification

Procedures for verifying oscilloscope performance and characteristics.

List of Tested Characteristics

Quantifiable performance limits tested for the oscilloscope.

Required Test Equipment

List of external traceable signal generators and measurement equipment needed.

Input Impedance Testing

Procedures for measuring channel and external trigger input impedance.

Channel Input Impedance Measurements

Detailed steps for testing DC 1MΩ, AC 1MΩ, and DC 50Ω input impedance.

Leakage Current Testing

Procedures for measuring leakage current on channel and external trigger inputs.

RMS Noise Measurement

Method for testing RMS noise on all channels with open inputs.

DC Accuracy Measurement

Procedure for measuring DC accuracy of voltage measurements at 0V offset.

Offset Accuracy Test

Procedure for testing offset accuracy at 5mV/div with a ±1 Volt signal.

Bandwidth Specification Testing

Procedures to ensure the system meets bandwidth specifications.

Trigger Level Verification

Tests for trigger capabilities across different DC levels and slopes.

Smart Trigger Testing

Procedures for testing trigger behavior based on pulse width.

Time Base Accuracy Verification

Procedure to check time base clock accuracy using an external sine wave generator.

Maintenance

Safety Precautions for Servicing

General safety warnings for qualified personnel performing servicing.

Troubleshooting and Flow Charts

Guidance for diagnosing and resolving common instrument problems.

Mechanical Parts & Removal

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