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Philips PM 3266 - User Manual

Philips PM 3266
274 pages
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PHILIPS
Portable
Storage
oscilloscope
PM
3266
J
Instruction Manual
9499 440 19702
781108'
•/
i
PHILIPS
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Summary

1. GENERAL INFORMATION

1.1. INTRODUCTION

Overview of the PM 3266 oscilloscope's capabilities, writing speed, sensitivity, bandwidth, and design features.

1.2. CHARACTERISTICS

Details about the CRT section, vertical and horizontal axes, time-bases, deflection, triggering, power supply, and environmental specifications.

1.3. ACCESSORIES

Lists standard and optional accessories delivered with or available for the oscilloscope, including probes, adapters, and cameras.

2. OPERATING MANUAL

2.1. GENERAL INFORMATION

Outlines installation procedures, precautions, and descriptions of front/rear panel controls for effective operation.

2.1.1. Installation

Details on connecting the protective earth terminal and general safety warnings regarding opening the instrument.

2.1.2. Removing and fitting the front cover

Step-by-step instructions for removing and fitting the front cover, including knob operation.

2.1.3. Mains adjustment and fuse

Information on operating voltage ranges, fuse replacement, and the use of the correct fuse type.

2.1.4. Earthing

Procedures for connecting the protective earth conductor and essential safety warnings.

2.1.5. Switching on

Instructions for powering on the oscilloscope, including the location of the power switch and safety precautions.

2.2. OPERATING INSTRUCTIONS

Details the operation of controls and sockets for vertical channels, horizontal channels, main time-base, delayed time-base, CRT display, and storage functions.

2.2.2. Preliminary settings

Provides preliminary settings and adjustment procedures for gain, inputs, and triggering.

2.2.4. Triggering

Explains trigger coupling, source selection, level setting, automatic triggering, and single sweep triggering.

2.2.9. Operation of the storage functions

Explains the operation of storage functions like MEMORY OFF, WRITE, FAST, STORE, and ERASE modes.

3. SERVICE MANUAL

3.1. DESCRIPTION OF THE BLOCK DIAGRAM

Provides an overview of the PM 3266 block diagram components, including vertical systems, time-bases, and amplifiers.

3.2. CIRCUIT DESCRIPTION

Details the oscilloscope's circuit blocks, including vertical deflection, time-bases, trigger, and storage sections.

3.2.1. Vertical deflection system

Details the dual-channel vertical system, input coupling, attenuator, impedance converter, and amplifier stages.

3.2.2. Main time-base triggering

Explains the trigger sources, modes, and amplifier stages for the main time-base.

3.2.3. Main time-base generator

Describes the components of the main time-base generator: sweep gating, sweep generator, hold-off, and auto sweep circuits.

3.2.4. Delayed time-base triggering

Details the trigger source selection and amplifier stages for the delayed time-base.

3.2.5. Delayed time-base generator

Describes the generator's circuits, including sweep detection, delay time function, and comparator logic.

3.2.6. X deflection selector and alternate time-base logic

Explains X deflection selector and alternate time-base logic based on switch positions.

3.2.7. X Final amplifier

Details X final amplifier stages, transistor control, and options for gain and deflection.

3.2.8. Storage Section

Introduces the storage section, its blocks, and waveform generation for storage modes.

3.2.9. Z-AMPLIFIER AND FOCUS AMPLIFIER

Describes focus and Z-amplifier circuits, including scan magnifier, focusing electrodes, and intensity control.

3.2.10. Power supply

Details power supply input, switching, and regulator circuits.

3.3. DISMANTLING THE INSTRUMENT

Provides general information, warnings, and procedures for dismantling the instrument, including removing parts and units.

3.3.7. Removing the cathode ray tube (CRT)

Detailed instructions for removing the CRT, emphasizing careful handling of side connections and EHT cable.

3.3.8. Replacing a push-button switch

Instructions for removing and replacing push-button switches and their segments on the front panel.

3.3.10. Soldering micro-miniature semi-conductors

Guidelines for soldering SOT semi-conductors, emphasizing the use of miniature soldering irons and safety precautions.

3.4. CHECKING AND ADJUSTING

Provides an overview of checking and adjusting procedures, recommended test equipment, and preliminary control settings.

3.4.4. Power supply

Details checking power consumption and adjusting voltage levels for the power supply unit.

3.4.6. Cathode-ray tube circuit

Covers adjustments for focus, horizontal intensity, trace rotation, orthogonality, geometry, and intensity.

3.4.7. Balance adjustments

Details balance adjustments for vertical channels A and B, including 0-DC balance, attenuator balance, and trigger balance.

3.4.8. Time-base generators

Covers adjustments for main time-base and delayed time-base time coefficients, and delay time.

3.4.9. Sensitivities

Provides procedures for checking gain sensitivities for various input and display configurations.

3.4.10. Vertical channels

Details checks for vertical channels, including LF correction amplifier, square-wave response, and input capacitance.

3.4.11. Triggering

Covers adjustments for trigger slope, level, and sensitivities for both main and delayed time-bases.

3.4.12. Jitter

Instructions for checking jitter, ensuring a jitter-free display by adjusting the d.t.b. LEVEL control.

3.4.16. Adjustment of storage section

Details adjustments for the storage section, including NON STORE, VARIABLE PERSISTENCE, and FAST modes.

Philips PM 3266 Specifications

General IconGeneral
BrandPhilips
ModelPM 3266
CategoryTest Equipment
LanguageEnglish

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