Philips PM2519 - Service Manual

Automatic Multimeter
PM2519
Service Manual
9499 475 02111
870308
j
Industrial & Electro-acoustic Systems Division}:
pHiups| Industrial &
= Electro-acoustic Systems

Summary

2. CIRCUIT DESCRIPTION

2.1. General

Overview of the automatic multimeter's circuit design.

2.2. Survey of the sections

Details the main functional sections of the multimeter.

2.3. Functional section

Explains the operational logic of the multimeter's functions.

2.4. Digital section

Covers microcomputer interfaces and memory functions.

2.5. Display

Explains the LCD driver and its segment control.

2.6. Power supply

Details the power supply circuit for the instrument.

2.7. PM2519;21

Covers the battery power supply version.

2.8. PM 2519;51

Details the IEC-625/IEEE-488 interface version.

4. FAULT-FINDING

4.1. General

Provides general service hints for troubleshooting.

4.2. Fault-finding flowcharts

Presents detailed flowcharts for systematic troubleshooting.

6. PARTS LIST

6.1. Main pcb

Lists components for the main printed circuit board.

6.2. Additions to the parts list for PM2519;21 (battery version)

Lists additional parts for the battery version.

6.3. Additions to the parts list for PM 2519;51

Lists additional parts for the PM2519/51 version.

1. TECHNICAL DATA

1.1. GENERAL

Provides general specifications including manufacturer and functions.

1.2. DC VOLTAGE MEASUREMENTS

Details specifications for DC voltage measurement ranges and accuracy.

1.3. dB MEASUREMENTS IN DC RANGES

Specifies parameters for dB measurements in DC ranges.

1.4. AC VOLTAGE MEASUREMENTS

Details specifications for AC voltage measurement.

1.5. dB MEASUREMENTS IN AC RANGES

Specifies parameters for dB measurements in AC ranges.

1.6. DC CURRENT MEASUREMENTS

Details specifications for DC current measurement.

1.7. AC CURRENT MEASUREMENTS

Details specifications for AC current measurement.

1.8. RESISTANCE MEASUREMENTS

Details specifications for resistance measurement.

1.9. DIODE MEASUREMENTS

Details specifications for diode measurements.

1.10. CONTINUITY CHECK

Specifies parameters for the continuity test function.

1.11. TEMPERATURE MEASUREMENTS

Details specifications for temperature measurements.

1.12. FREQUENCY MEASUREMENTS

Details specifications for frequency measurement.

1.13. RELATIVE REFERENCE SETTING

Explains the relative reference setting function.

1.14. CONVERSION CHARACTERISTICS

Describes the instrument's conversion characteristics.

1.15. VISUAL REPRESENTATION

Describes how measurement results are displayed.

1.16. OPERATING CONDITIONS IN ACCORDANCE WITH IEC 359

Specifies environmental operating conditions.

1.17. MAINS SUPPLY CONDITIONS IN ACCORDANCE WITH IEC 359, GROUP S2

Details mains supply requirements and conditions.

1.18. BATTERY SUPPLY (PM 2519;21 version only)

Provides information on battery operation for specific versions.

1.19. INPUT TERMINALS ARRANGEMENT

Describes the layout and function of input terminals.

1.20. TIME FUNCTION ADC

Details the ADC's time function parameters.

1.21. WARM UP TIME

Specifies the warm-up time before calibration.

1.22. CALIBRATION

Outlines the calibration procedure and interval.

1.23. ACCESSORIES

Lists supplied and optional accessories for the instrument.

1.24. MISCELLANEOUS

Provides miscellaneous data like dimensions and weight.

1.25. SAFETY

Details safety classifications and precautions.

3. CHECKING AND ADJUSTING

3.1. GENERAL

General information and prerequisites for checking and adjusting.

3.2. ADJUSTING THE PM 2519 WITH THE AID OF A CONTROLLER (for PM 2519;51 only)

Procedure for adjusting the instrument using an external controller.

3.3. PART A

First part of the adjustment procedure, focusing on specific elements.

3.4. PART B

Second part of the adjustment procedure, covering various measurements.

3.5. ADJUSTING THE BATTERY POWER SUPPLY PM 2519;21

Specific adjustment procedure for the battery power supply unit.

5. ACCESS

5.1. DISMANTLING THE PM 2519

Step-by-step guide to disassemble the main unit.

5.2. DISMANTLING THE BATTERY POWER SUPPLY (PM 2519;21)

Procedure for removing the battery power supply unit.

5.3. DISMANTLING THE IEC-BUS AND THE GALVANIC SEPARATION (PM 2519;51)

Guides for removing IEC-bus and galvanic separation modules.

7. CIRCUIT DIAGRAMS AND PCB LAY-OUT

Fig. 7.1. Analog part

Schematic diagram of the analog signal processing section.

Fig. 7.2. Digital part

Schematic diagram of the digital processing section.

Fig. 7.3. Power supply

Schematic diagram of the power supply circuit.

Fig. 7.4. Main p.c.b., lay-out, conductor side

Layout of the main PCB on the conductor side.

Fig. 7.5. Main p.c.b., lay-out, component

Layout of the main PCB on the component side.

Fig. 7.6. Switch p.c.b., lay-out, front view

Layout of the switch PCB from the front.

Fig. 7.7. Switch p.c.b., lay-out, rear view

Layout of the switch PCB from the rear.

Fig. 7.8. Display p.c.b., lay-out, component side

Layout of the display PCB on the component side.

Fig. 7.9. Display p.c.b., lay-out, conductor side

Layout of the display PCB on the conductor side.

Fig. 7.10. Preset p.c.b., lay-out, component side

Layout of the preset PCB on the component side.

Fig. 7.11. Preset p.c.b., lay-out, conductor side

Layout of the preset PCB on the conductor side.

Fig. 7.12. Battery power supply

Block diagram of the battery power supply system.

Fig. 7.13. Battery power supply p.c.b., lay-out, component side

Layout of the battery PCB on the component side.

Fig. 7.14. Battery power supply p.c.b., lay-out, conductor side

Layout of the battery PCB on the conductor side.

Fig. 7.15. Galvanic separation

Schematic of the galvanic separation circuit.

Fig. 7.16. Galvanic separation p.c.b., lay-out, component side

Layout of the galvanic separation PCB on the component side.

Fig. 7.17. Galvanic separation p.c.b., lay-out, conductor side

Layout of the galvanic separation PCB on the conductor side.

Fig. 7.18. IEC-625;IEEE-488 interface p.c.b., lay-out, component side

Layout of the IEC-bus PCB on the component side.

Fig. 7.20. IEC-625;IEEE-488 interface p.c.b., lay-out, conductor side

Layout of the IEC-bus PCB on the conductor side.

8. ADAPTING TO THE LOCAL MAINS VOLTAGE

8.1. PM 2519;01;21

Instructions for adapting the mains voltage for PM 2519/01/21.

8.2. PM 2519;51

Instructions for adapting the mains voltage for PM 2519/51.

9. MODIFICATIONS

9.1. MODIFICATIONS TO THE PM 2519;01

Details modifications for the PM 2519/01 model.

9.2. MODIFICATIONS TO THE PM 2519;51

Details modifications for the PM 2519/51 model.

10. COMPONENT DATA

HEF4001 B QUADRUPLE 2-INPUT NOR GATE

Functional and pinning diagrams for HEF4001B NOR gate IC.

HEF4011 B QUADRUPLE 2-INPUT NAND GATE

Functional and pinning diagrams for HEF4011B NAND gate IC.

HEF4518 B DUAL BCD COUNTER

Details for the HEF4518B dual BCD counter IC.

HEF4520 B DUAL BINARY COUNTER

Details for the HEF4520B dual binary counter IC.

HEF4532 B 8-INPUT PRIORITY ENCODER

Functional and truth table for HEF4532B priority encoder IC.

HEF40245 B OCTAL BUS TRANSCEIVER WITH 3-STATE OUTPUTS

Functional and pinning diagrams for HEF40245B bus transceiver IC.

SN75160 A, SN75161 A IEEE-488 GPIB BUS TRANSCEIVERS

Data sheets for SN75160A/SN75161A GPIB bus transceivers.

OQ 0063 Programmable Current Source

Pin details and operation modes for OQ 0063 current source IC.

OQ 0067 A ADC

Pin functions and block diagram for OQ 0067A ADC IC.

OQ 0068 RMS CONVERTER

Pin details, operation modes for OQ 0068 RMS converter IC.

OQ 0070 DISPLAY DRIVER

Pin functions and block diagram for OQ 0070 display driver IC.

OQ 0071 ADC INTERFACE

Pin functions and block diagram for OQ 0071 ADC interface IC.

PCD8571 128 x 8-BIT STATIC RAM

General description, pinning, and block diagram for PCD8571 RAM IC.

Philips PM2519 Specifications