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Hameg HM205-2 User Manual

Hameg HM205-2
54 pages
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Table of Contents

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Hameg HM205-2 Specifications

General IconGeneral
TypeOscilloscope
Bandwidth20 MHz
Channels2
Sample Rate100 MS/s
Trigger ModesAuto, Normal, Single
Trigger SourceCH1, CH2, Line, Ext
Max Input Voltage400 V (DC + AC Peak)
Input Impedance1 MΩ
DisplayCRT
Power Supply100-240 VAC, 50/60 Hz

Summary

Oscilloscope Specification

Vertical Deflection

Defines operating modes, frequency range, risetime, deflection coefficients, input impedance, and Y output.

Triggering Specification

Covers automatic, normal, level control, slope, coupling, and TV sync separator features for triggering.

Horizontal Deflection

Details time coefficients, X-expansion, holdoff-time, and X-Y phase shift for horizontal deflection.

Digital Storage Capabilities

Describes operating modes, memory size, sampling rate, resolution, and output options for digital storage.

Component Tester Functionality

Explains test voltage, current, frequency, and grounding for the component tester.

General Information

Provides details on CRT, calibrator, line voltages, power consumption, weight, and dimensions.

Included Accessories

Lists supplied accessories: switchable probes, trimming tool, line cord, and manual.

Operating Instructions

General Information & Setup

Overview of the HM205-2, initial checks, tilt handle usage, and basic operation.

Safety Precautions

Details safety requirements, protective conductor use, and warnings regarding high voltage and hazards.

Guarantee and Maintenance

Explains guarantee conditions, maintenance guidelines, cleaning, and recommended test equipment.

Mains/Line Voltage Switching

Explains how to change the mains/line voltage setting and fuse replacement.

Signal Voltage and Amplitude Measurement

Discusses signal types, frequency limits, AC/DC coupling, and amplitude measurement techniques.

Timebase and Measurement Procedures

Guides on reference line, time measurements, risetime/falltime, and signal connection.

First Time Operation and Probes

Step-by-step guide for initial power-on, probe compensation, and trace adjustment.

Triggering Modes and Settings

Details automatic, normal, slope, coupling, line, video, and external triggering modes.

Holdoff-Time Adjustment

Explains using HOLD OFF to stabilize display on complex signals or aperiodic pulse trains.

Component Tester Operation

Component Tester Overview and Usage

Introduces the CT, its basic operation, controls, and connecting test leads.

Test Procedure and Pattern Interpretation

Guides for performing tests, interpreting patterns for resistors, capacitors, semiconductors.

Specific Component Testing

Details testing diodes, in-circuit components, and transistors (NPN/PNP).

Storage Operation

Storage Front-Panel Controls

Identifies controls for storage: STOR., HOLD I/II, SINGLE, RESET, DOT J.

Storage Resolution and Modes

Details vertical/horizontal resolution, max frequency, and single channel display.

Vertical Output Signal

Describes the rear panel BNC output providing a sample of CH.I or CH.II signals.

Short Instruction for HM205-2

Initial Setup and Basic Operation

Steps for powering on, setting controls, amplifier modes, and triggering.

Storage, Measurement, and Component Tester

Brief overview of storage mode, measurement setup, and component tester usage.

Front Panel Controls Overview

Element Descriptions (1-19)

Detailed description of front panel elements from POWER to CALIBRATOR.

Element Descriptions (20-41)

Detailed description of front panel elements from COMPONENT TESTER to DOT J.

Test Instructions

General Test Procedures

Guides for regular checks, CRT, astigmatism, and vertical amplifier symmetry.

Calibration and Performance Tests

Covers vertical amplifier calibration, transmission performance, and operating mode tests.

Range Checks and Output Verification

Checks timebase ranges, component tester, trace alignment, mains stability, and Y-output.

Service Instructions

General Service and Case Removal

Guidelines for technicians, case removal, safety precautions, and voltage checks.

Adjustments and Troubleshooting

Details astigmatism, trigger threshold, general troubleshooting, and CRT voltage checks.

Component and Transformer Replacement

Guidance on replacing parts, ordering, and replacing the power transformer.

Calibration Procedure

Calibration Warnings and Guidelines

High voltage warning, service guidelines, and table of calibration steps.

Basic Adjustments (Voltages, Intensity, Balance)

Covers +12V supply, CRT intensity, trace rotation, and channel balance adjustments.

Amplifier and Trigger Calibration

Details gain, HF adjustments, attenuator compensation, trigger symmetry, and DC triggering.

Timebase, X-Gain, and Specific Trigger Calibration

Covers X-magnification, timebase calibration, X-Y gain, and specific trigger adjustments.

Filter, Bandwidth, Line, External Trigger, and Calibrator Checks

Tests for trigger filter, bandwidth, line/external trigger, and calibrator output.

Mode and Video Trigger Tests

Testing Dual/Chop modes, component tester Y-position, and video trigger settings.

Digital Storage Assembly Adjustments

Y-Gain and Symmetry Adjustments

Adjusting VR4 for Y-gain and VR5 for Y-output symmetry in storage.

Y-Position and Sensitivity Adjustments

Adjusting VR1, VR3 for Y-position and VR2100 for Y-out sensitivity.

Storage Y-Gain Adjustments (CH I/II)

Referencing analog section for CH I/II Y-gain adjustments in storage mode.

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