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Finest 226 User Manual

Automotive multimeter
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a world leader in test & measurement
FINE INSTRUMENTS CORPORATION
Room # 601, DAEWOO TECHNOPIA, 768-1, WONSI-DONG, DANWON-GU,
ANSAN-SI, GYEONGGI-DO, SOUTH KOREA
- TEL: (82-31) 470-8888
- FAX: (82-31) 470-8887
- www.finest. co.kr - E-mail: fine@finest.co.kr
© Copyright 2003 Fine Instruments Corp. All right reserved.
Specifications subject to change without notice.
Litho in Korea.
226
228
AUTOMOTIVE MULTIMETER
USER'S MANUAL

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  • Page 1 Room # 601, DAEWOO TECHNOPIA, 768-1, WONSI-DONG, DANWON-GU, ANSAN-SI, GYEONGGI-DO, SOUTH KOREA - TEL: (82-31) 470-8888 - FAX: (82-31) 470-8887 - www.finest. co.kr - E-mail: fine@finest.co.kr © Copyright 2003 Fine Instruments Corp. All right reserved. Specifications subject to change without notice. Litho in Korea.
  • Page 2 : 30 to 9000 RPM Resistance : 0 to 40 M WARNING! Frequency : 0.5 Hz to 200 kHz [ 226 only ] SOURCES LIKE SMALL HAND-HELD RADIO Pulse Width : 0.5 to 1999.9 mS TRANSCEIVERS, FIXED STATION RADIO AND Dwell : 0 °...

  • Page 3: Table Of Contents

    CONTENTS 1. INTRODUCTION This instrument is handheld and battery operated. It is designed 1. Introduction and tested according to IEC Publication 1010-1 (EN61010-1), 2. International Symbols (Overvoltage Category III), the EMC Directive (EN 50081-1 and 3. Explanation of Controls and Indicators EN 50082-1), UL 1244 &...

  • Page 4: International Symbols

    Always avoid working alone. ¥ Accurate non-automotive Frequency measurements with 20000 count on the high resolution 4000 count display [ 226 Only ] Do not try to measure any voltage that exceeds 600 V dc or ac rms.
  • Page 5 60 V DC or 24 V AC RMS * Ohms can be measured only in a nonpowered circuit. * * Hz(non-automotive Frequency measurement) function is available in Model: 226 Only. * * * Temperature mode is available in Model: 228 Only.

  • Page 6: Explanation Of Controls And Indicators

    5 – RANGE. Press the RANGE button to select the Manual Range mode and turn off the “AT” symbol. (The Meter remains in the range it was in when manual * * 11 RPM, V, Ω [ 226 Only ] ranging was selected.)
  • Page 7 To exit the Manual Range mode and return to Toggles between a Negative (–) and Positive (+) 7 – autoranging, press and hold down the RANGE Trigger Slope when the Meter is in the Pulse button for 2 seconds. The “AT” symbol turns back Width or Duty cycle (%) mode;...
  • Page 8 Dwell, Hz(Automotive Hz) measurement Duty%, Hz Frequency (Non-automotive Hz) measurement [ 226 Only ] TEMP Temperature [ 228 Only ] 13 – AC . Displayed when AC measurement function is selected. 9 – CE. This Meter is CE-marking certificated. (Negative Polarity) . Automatically indicate negative 14 –...
  • Page 9 24 – 8 8 CYL . Displayed when a certain number of cylinders is 18 – ± . Indicates a – (negative) or + (positive) trigger slope when selected in the RPM or Dwell mode. Press the CYL button to a trigger slope is selected.

  • Page 10: Power-On Options

    4. POWER-ON OPTIONS Using Inductive Pickup The Meter comes with an Inductive Pickup. The Inductive Pickup The Meter has two power-on options. takes the magnetic field generated by the current in the spark plug wire and converts it to a pulse that triggers the Meter’s RPM Auto-Power-Off Mode measurement.

  • Page 11: Basic Electrical Tests And Measurements

    5. BASIC ELECTRICAL TESTS AND MEASUREMENTS Accuracy Voltage Measurements A measurement range determines the highest value the Meter can measure. Most Meter functions have more than one range. Being WARNING! in the right measurement range is very important when measuring. TO AVOID THE RISK OF ELECTRICAL SHOCK AND INSTRUMENT DAMAGE, INPUT VOLTAGES MUST NOT Selection of a lower range will...
  • Page 12 Resistance Measurements To measure resistance: • Select the Resistance (Ω) Resistance is measured in Ohms (Ω) and the values can greatly vary from a few Milliohms (mΩ) for contact resistance to billions of setting with the rotary switch. ohms for insulators. The Meter can measure down to about 0.1 •...
  • Page 13 Continuity Test RPM Measurements Using the Inductive Pickup A DMM with a continuity beeper allows you to quickly and easily RPM refers to revolutions per minute. Using the inductive pickup, distinguish between an open and a closed circuit. The Meter beeps which comes with the Meter, RPM can be measured by clamping it when it detects a closed circuit or short, so you do not have to look around any spark plug wire of a two stroke or a four stroke...
  • Page 14 To measure RPM: Pulse Width Measurements • Select the RPM range with Pulse Width is the length of time an actuator is energized. For the rotary switch. example, fuel injectors are activated by an electronic pulse from • Press the DC/AC button to the Engine Control Module (ECM).
  • Page 15 To measure pulse width (mS): Dwell Measurements • Select the mS-Pulse range with Dwell is the number of degrees of distributor rotation where the the rotary switch. points remain closed. Dwell can be measured for 1,2,3,4,5,6,8 • Press the ± TRIG button for 2 cylinder engines using the Meter so you need to determine how seconds until the negative (–) many cylinders are in the engine to measure Dwell.
  • Page 16 To measure Dwell: Duty Cycle Measurements • Select the mS-Pulse range Duty Cycle is the percentage (%) of time that voltage is positive with the rotary switch. compared to negative: On compared to Off. There are many • Press the HOLD (DWELL) signals on a vehicle where you might be required to measure duty button until DWL°, 4 CYL, cycle.
  • Page 17 To measure duty cycle (%): Most car have the points of the • solenoid closed for a duty cycle Select the mS-Pulse range between 50 ~ 70%. with the rotary switch. • Press the HOLD (DUTY %) Once the engine warms up and button until % appears on goes into open loop, the duty the right side of the display.
  • Page 18 To measure frequency (Hz): Frequency (Non-Automotive Hz) Measurements • Select the mS-Pulse range [ Model: 226 Only ] with the rotary switch. • Press the HOLD (Hz) button The Meter has two frequency measurement modes: The non- until Hz appears on the right automotive Hz measurement (Approximate Trigger Level: 300 mV) side of the display.
  • Page 19 To measure frequency (Hz). Temperature Measurements [ Model: 228 Only ] • Select the Hz setting with the rotary switch. Insert: CAUTION! • Black lead in COM jack. DO NOT ALLOW TEMPERATURE PROBES TO CONTACT ANY • Red lead in RPM, V, Ω Hz LIVE VOLTAGE THAT MAY EXCEED 30 V AC RMS OR 42 V AC jack.

  • Page 20: Basic Automotive Diagnostic Testing

    To measure temperature: 6. BASIC AUTOMOTIVE DIAGNOSTIC TESTING • Select the TEMP setting with the rotary switch. These basic diagnostic tests begin by checking the main source of • Press the DC/AC button to power and the chassis ground circuit connections. Ground circuits toggle between °C and °F.
  • Page 21 To check battery charge state: (2) Voltage Load Test • Turn the headlights on for 15 Batteries are often blamed for “No–Start” conditions, when in fact seconds to dissipate battery the real problem exists in the charging system. After the charging surface charge.

  • Page 22: Voltage Drop Tests

    To measure voltage load: Voltage Drop Test • Set the rotary switch to Voltage drop tests measure the amount of voltage expended to voltage ( overcome resistance (an opposing force created by a circuit or Connect: component to the flow of electrical current); the lower the voltage •...
  • Page 23 NOTE: Do not use the allowable voltage drop values listed (1) Battery Ground to Engine Block Voltage Drop Test above on circuits that use aluminum cables. This test checks for engine ground efficiency. Maximum voltage drop, normally, should not be more than 0.1V To check voltage drop: per wire, ground, connection, switch or solenoid.
  • Page 24 To check voltage drop: NOTE: Repeat this test when the engine is thoroughly warmed • Set the rotary switch to up. Heat expansion of metal voltage ( may cause voltage drop to • Touch the Black test probe increase. to the negative (–) battery post and the Red test probe (2) Battery Ground to Complete Starter Circuit (+) Voltage to the positive (+) battery...
  • Page 25 A defective starter solenoid To measure start current: cause an excessive voltage drop. • Set the rotary switch to the Check cables millivolts DC ( mV ) setting. connections before replacing the • Connect a DC clamp-on solenoid. current probe to the Meter. •...

  • Page 26: Charging System Tests

    Charging System Tests (1) Alternator Output Voltage Test at the Battery (+) This test checks for alternator output voltage at the battery. Charging system problems often are identified with a No-Start complaint. The battery will have discharged and the starter won’t To measure alternator output crank the engine.

  • Page 27: Ignition System Tests

    (2) Alternator Output (+) Voltage Test (Loaded) Ignition System tests This test is necessary only if the vehicle failed the above test. Since the Meter can measure from tenths of an ohm up to 40 million ohms, this makes it very useful for testing the resistance in To measure alternator output most ignition system components.
  • Page 28 measure wire (1) Spark Plug Wire (Secondary lgnition Wire) Resistance Test resistance: Spark plug wires should be checked if your oscilloscope indicates • Set the rotary switch to that there may be a problem or if they are more than two years old. resistance (Ω).
  • Page 29 Typical measurements are (2) Primary Windings Resistance Test between 0.5 ohms and 2.0 This test checks for resistance in the primary windings of ohms. conventional and DIS (distributorless) ignition coils. To get the actual figures for a To measure resistance in the specific coil, check the primary windings: manufacturer’s specs.

  • Page 30: Summary Of Automotive Electrical System Tests

    (3) Secondary Windings Resistance Test Summary of Automotive Electrical System Tests This test checks for resistance in the secondary windings of Electrical System Tests conventional and DIS (distributorless) ignition coils. MEASUREMENT TYPES SYSTEM & Voltage To measure resistance in the COMPONENTS presence Voltage...

  • Page 31: Maintenance And Replaceable Parts

    • • • Regulators BODY ELECTRIC • • • • • Compressor Clutch • • • Lighting Circuits • Relay and Motor Diodes • • Transmissions * Use with a DC current clamp * * Available in Model 226 Only...

  • Page 32: Specifications

    Replaceable Parts and Accessories 8. SPECIFICATIONS NOTE: When servicing the Meter, use only the replaceable Electrical Specifications parts and accessories specified. Accuracy is given as ± ([% of reading]+[number of least significant digits]) at 18°C to 28°C with relative humidity up to 80%, for a period of one year after calibration.

  • Page 33: General Specifications

    Temperature Specification Voltage RANGE RESOLUTION ACCURACY FUNCTION RANGE RESOLUTION ACCURACY INPUT IMPEDANCE -40°C to -10°C 0.1°C ± (3.0°C + 1 dgt) ( -40°F to 14°F ) ( 0.1°F ) ± (3.0°F + 1 dgt) Approx. 11MΩ -10°C to 20°C 0.1°C ±...
  • Page 34 Temperature Coefficient: 0.05 x ( Specified Accuracy )/°C ( < 18°C or > 28°C; < 64°F or >82°F ) Battery Type : 9V, NEDA 1604 or 6F22 or 006P Battery Life : 140 hrs typical (alkaline) Shock, Vibration : Designed to MIL-T-28800D for a Class 3 instrument, 1 meter shock Size (H X W X D) Meter Only...

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