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Finest 500 User Manual

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500

DIGITAL MULTIMETER

Please read before using this equipment.
USER'S MANUAL
a world leader in test & measurement
FINE INSTRUMENTS CORPORATION
341-5, SONGNAE-DONG, SOSA-GU, BUCHON-SHI, KYUNGGI, KOREA
-TEL: (82-32) 656-8771~4 -FAX: (82-32) 656-5844
-E-mail: fine@finest.co.kr
-Internet: www.finestwon.com (or www.finest.co.kr)
© Copyright 1999 Fine Instruments Corp. All right reserved.
Specifications subject to change without notice.
Litho in Korea.

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Summary of Contents for Finest 500

  • Page 1: Digital Multimeter

    & measurement FINE INSTRUMENTS CORPORATION 341-5, SONGNAE-DONG, SOSA-GU, BUCHON-SHI, KYUNGGI, KOREA -TEL: (82-32) 656-8771~4 -FAX: (82-32) 656-5844 -E-mail: fine@finest.co.kr -Internet: www.finestwon.com (or www.finest.co.kr) © Copyright 1999 Fine Instruments Corp. All right reserved. Specifications subject to change without notice. Litho in Korea.

  • Page 2: Table Of Contents

    Measurement Limits: DC Voltage : 0.1mV to 1000V AC Voltage : 1mV to 750V DC Amperes : 0.1µA to 10A AC Amperes : 0.1µA to 10A Resistance : 0.1Ω to 20MΩ Continuity Check : Beep at Approx. < 150Ω in the 200Ω range WARNING! WARNING! SOURCES LIKE SMALL HAND-HELD RADIO...

  • Page 3: Introduction

    1. INTRODUCTION 2. SAFETY CONSIDERATIONS This Meter is a handheld and battery operated instrument that is Before using this Meter, read the following safety information carefully. designed and tested according to IEC Publication 1010-1 (EN 61010- In this manual, the word “WARNING” is used for conditions and actions 1) (Overvoltage Category ll), the EMC Directive (EN 50081-1 and EN that pose hazard(s) to the user;...

  • Page 4: Explanation Of Controls And Indicators

    3. EXPLANATION OF CONTROLS AND INDICATORS WARNING! OBSERVE ALL SAFETY PRECAUTIONS WHEN MEASURING 1 – DIGITAL DISPLAY. Digital readings are displayed on a 2000 HIGHER VOLTAGES AND/OR CURRENTS. TURN OFF POWER TO count display with polarity indication.The display updates three times per second.
  • Page 5 9 – AC 750V DC 1000V . The maximum voltage that this Meter can measure is 1000V DC or 750V AC RMS. 10 – . Be extremely careful when making high-voltage measurement; DO NOT TOUCH TERMINALS OR TEST LEAD PROBE ENDS. VΩ...

  • Page 6: Basic Electrical Tests And Measurements

    16 – (Low Battery). Battery run-out warning. When 4. BASIC ELECTRICAL TESTS AND MEASUREMENTS first displayed, at least 8 hours of battery life remain. Replace the battery immediately. Never leave a weak or dead battery in the 4.1 Measuring Voltage Meter.
  • Page 7 • To improve the accuracy of DC voltage measurements taken in the presence of AC voltages (such as, measuring the DC offset voltage of an amplifier in the presence of an AC signal), measure the AC voltage first. Note the just measured AC voltage range and select a DC voltage range that is the same or higher than the AC voltage r ange.
  • Page 8 To find the RMS voltage line-to-line on a 3-phase power line, multiply the rated line-to-ground voltage by the square root of 3 (approx. 1.732). For example, if you connect this Meter to a 480 volts 3-phase line (i.e.480V line-to-ground), the total available voltage line-to-line is about 832V AC (≒480V x 1.732).
  • Page 9 • For resistance above 1 Megohm, the display might take a few 4.2.1 Measuring Ohms seconds to stabilize. This is normal for high-resistance readings. When measuring resistance, be sure that the contact between the test • The Meter has a circuit to protect the resistance range from over- leads and the circuit under test is good.
  • Page 10 4.3 Diode Test & Microwave Didoes • In diode test, drop voltage in the forward direction is displayed when diode is connected in the forward direction. For a germanium diode, Diode test lets you check didoes, transistors, and other the typical forward voltage is about 0.4V and in case of a silicon semiconductors for opens, short, and normal operation.
  • Page 11 4.3.2 Microwave Didoes Most microwave didoes can not be tested by a DMM with a diode test function. This is because the DMM does not supply enough power to turn these diode on. We offer an accessory test lead, model TL60, that boosts the power output so that microwave didoes can be adequately tested.
  • Page 12 • When measuring current, the Meter’s internal shunt resistors 5. MAINTENANCE AND REPLACEABLE PARTS develop a voltage across the meter’s terminals called “burden voltage”. This voltage drop may affect precision circuits or 5.1 General Maintenance measurements. Follow these steps to measure DC (or AC) Amps. WARNING! 1.

  • Page 13: Maintenance And Battery/Fuse(S) Replacement

    5.3 Fuse(s) Test And Replacement 6. ACCESSORIES 5.3.1 Fuse(s) Test NOTE: When servicing the Meter, use only the replaceable parts specified. To test the internal fuses of this Meter: Battery, 9 Volt 1. Set the rotary switch to “ ” position. Fuse 2A, 600V RMS 2.

  • Page 14: Specifications

    7. SPECIFICATIONS FUNCTION RANGE RESOLUTION ACCURACY REMARKS 7.1 Specifications VOLTAGE DROP: 200µA 0.1µA 1mV/µA Accuracy is given as ±( [ % of reading ] + [ number of least significant AC A 1µA 100mV/µA digits] ) at 18°C to 28°C with relative humidity up to 80%, for a period (45Hz to 20mA 10µA...
  • Page 15 7.2 Maximum Inputs Temperature Coefficient: 0.10 x (Specified Accuracy)/°C (< 18°C or > 28°C; <64°F or >82°F) FUNCTION INPUT TERMINAL MAXIMUM INPUT Battery Type : 9V, NEDA 1604 or 6F22 or 006P RED LEAD BLACK LEAD Battery Life : 350 hrs typical (alkaline) VΩ...