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Finest 509 User Manual

True-rms multimeter with rs-232c
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509
509THD
TRUE-RMS MULTIMETER
WITH RS-232C
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:finest @ktnet.co.kr
© Copyright 1999 Fine Instruments Corp. All right reserved.
Specifications subject to change without notice.
Litho in Korea.

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  • Page 1 & 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:finest @ktnet.co.kr © Copyright 1999 Fine Instruments Corp. All right reserved. Specifications subject to change without notice. Litho in Korea.

  • Page 2: Table Of Contents

    Continuity Check : Beep at Approx. < 100 Ω in the 4 KΩ range TELEVISION TRANSMITTERS, VEHICLE RADIO THD @ 50/60Hz ® : 0.0% to 99.9% [509 THD Only] TRANSMITTERS AND CELLULAR PHONES GENERATE ELECTROMAGNETIC RADIATION THAT MAY INDUCE VOLTAGES IN THE TEST WARNING! LEADS OF THE MULTIMETER.

  • Page 3: Introduction

    Rubber boot (or Safety holster) 1. INTRODUCTION °· Large LCD display (68.5 mm x 32.7 mm) °· RS-232C interface This Meter is a handheld and battery operated instrument that is designed and tested according to IEC Publication 1010-1 (EN 2. SAFETY CONSIDERATIONS 61010-1) (Overvoltage Category ll), the EMC Directive (EN 50081- 1 and EN 50082-1) and other safety standards (see Before using this Meter, read the following safety information...

  • Page 4: Explanation Of Controls And Indicators

    3. EXPLANATION OF CONTROLS AND INDICATORS WARNING! OBSERVE ALL SAFETY PRECAUTIONS WHEN MEASURING HIGHER VOLTAGES (AND/OR CURRENTS). TURN OFF POWER TO THE CIRCUIT UNDER TEST, SET THIS METER TO THE DESIRED FUNCTION AND RANGE, CONNECT THE TEST LEADS TO THIS METER AND THEN TO THE CIRCUIT UNDER TEST.
  • Page 5 the LO (low) reference value. If the compared reading is •L DIGITAL DISPLAY. Digital readings are displayed on a 4000 between the HI(high) reference and the LO (low) reference, count display with polarity indication and automatic decimal a symbol “PASS” will be displayed on the LCD. point placement.
  • Page 6 Press the RANGE button to select the Manual Range mode When this Meter entered the Recordings mode, Auto Power Off is disabled and this Meter will automatically switch to and turn off the “AT” symbol. (The meter remains in the Standby Mode after around 1 hour to save battery life unless range it was when manual ranging was selected.) you disabled the Standby Mode.
  • Page 7 All measurements will be displayed as the difference (Toggles between DC and AC; Toggles between between the stored value and the measured value. Negative °C and °F in the Temperature mode). Press the readings are lower than the stored value. Positive readings DC/AC button to toggle between DC and AC when are higher than the stored value.
  • Page 8 Diode test Continuity test The red test lead is plugged into this terminal for all AC V, Frequency (Autoranging only) DC V, Ohms, continuity test, diode test, frequency and CAP Capacitance (Autoranging only) capacitance functions. When measuring temperature, a TEMP Temperature thermocouple adapter is plugged into both this terminal and the COM input terminal.
  • Page 9 ß˚ AT. Displayed when the Auto Range mode is selected. (Compare mode). Displayed when the Compare mode is selected. This mode allows you to do the GO-NO GO test ߸ O . F . L (Overload Indication). Displayed on the LCD when (see ®Î).

  • Page 10: Basic Electrical Tests And Measurements

    Using Holster and Stand BOTTOM CASE The Meter comes with a protective holster that absorbs shocks and protects the Meter from rough handling. The holster is equipped with a stand rest. RS-232C TERMINAL. The standard D9 male connector of the 4.
  • Page 11 • To improve the accuracy of DC voltage measurements taken in the presence of AC voltages (such as, measuring the DC 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 range.
  • Page 12 4.1.2 Measuring AC Volts 4.2 Measuring Resistance (Ohms) Follow these steps to measure AC volts. CAUTION! 1. Set function and range switch to the desired AC V range. TURN OFF POWER AND DISCHARGE ALL CAPACITORS ON If you do not know the value of the voltage to be measured, CIRCUIT TO BE TESTED BEFORE ATTEMPTING INCIRCUIT always start with the highest range and reduce the setting as RESISTANCE MEASUREMENTS.
  • Page 13 • The current applied during resistance measurements could damage some devices. The table below lists the test voltage and current available for each resistance measurement range. (All values are typical.) RANGE OPEN CIRCUIT FULL SCALE SHORT CIRCUIT VOLTAGE (A) VOLTAGE (B) CURRENT (C) 400 Ω...
  • Page 14 4.3 Continuity Test, Diode Test and Microwave Diodes 4.3.1 Continuity Test This mode helps you check electrical circuits, such as wiring, speaker cables, connections, switchers, or relays for short or open circuits. In continuity test, a measured value of approx. 100Ω or less causes the Meter to emit a continuous tone.
  • Page 15 Follow these steps to check a diode. NOTE: When taking current measurements, this Meter must be connected in SERIES with the circuit (or circuit 1. Set the Function switch to the “ ” position. element) under test. NEVER CONNECT THE TEST 2.
  • Page 16 • AC current measuring circuit in this Meter is of root-meansquare These solid state switches create non-linear loads on the power (True-RMS) value system so this Meter can accurately measure distribution systems, which generate harmonics. These harmonics AC current of non-sinusoidal wave forms including harmonics are odd multiples of the fundamental power line frequency, and caused by various non-linear loads.
  • Page 17 As you can see from this THD-R (%) versus THD-F (%) Follow these steps to measure THD-R (%) in the power line. table, both THD-R (%) and THD-F (%) values THD-R (%) THD-F (%) 1. Set function and range switch to the AC Volts or Amps range. are essentially the same 0.00 0.00...
  • Page 18 • In capacitance, the Meter is 4.7 Measuring Frequency always autoranging. • In 1µF range, the readings are • In frequency, the Meter is probably unstable due to always autoranging. environmentally induced • When disconnecting the electrical noise and floating input terminals, capacity of the test leads.
  • Page 19 MEASUREMENT TECHNIQUES FOR THE BEST ACCURACY • This Meter directly measures temperature using a K-type thermocouple which optionally • Choosing a Proper Thermocouple Probe supplied with this Meter. The thermocouple optionally supplied with this Meter is a bead type thermocouple, which is designed for general-purpose use. •...

  • Page 20: Rs-232C Interface

    Follow these steps to measure temperature. The RS- 232C connector’s pin configuration is as follows < DMM > < Computer > 1. Set the rotary switch to the “TEMP” position. 2. Plug the thermocouple adapter into the COM input terminal and 3 RXD the TEMP input terminal observing the proper polarity.
  • Page 21 6. Press the enter key and you will see the first screen showing Don’t Forget! our company’s name. Press the enter key again you will see the second screen • MOUSE usage: showing features of this Meter. LEFT KEY – SHORT KEY Press the enter key again and you will see the measurement (= short press on the DMM button) screen with the menu.
  • Page 22 • FILE MENU usage: • FILE SPECIFICATION MEASUREMENT. Displays STOP MEASUREMENT on the pull down menu; pressing <ESC> enables the Meter to start to EXTENTION MINUTE measure, when the pull down menu disappears. µA : MICRO AMPERES MODE HOUR MA : MILLI AMPERES MODE STOP MEASUREMENT.
  • Page 23 5.3.2 Transmit Data Format 5.3.3 Receive Data Format POSITION RANGE STATUS DATA DATA • STX (1 BYTE): F2H • STX (1 BYTE): F2H • ID (1 BYTE): 09H • ID (1 BYTE): 09H • POSITION (1 BYTE) • DATA (1 BYTE) •...
  • Page 24 5.3.4 A Sample Program (FICOM.H) /* Parameters to bioscom function */ #define DATABIT7 0X02 /* Data bit */ The following program is an example of a C language program #define DATABIT8 0X03 which helps users to understand the data format and the data interfacing method, and also to develop their own programs.

  • Page 25: Maintenance And Battery/Fuse(S) Replacement

    */ Miscellaneous */ 6.2 Battery Replacement #define BUFSIZE 0x4000 /* SIze of comm buffer */ The Meter uses a 9V battery (NEDA 1604 or IEC 6F22). To #define BUFFEREMPTY (–1) /* Buffer empty */ replace the battery, remove the two screws of the battery com #define ON 1 parament from the back of the Meter and lift off the cover of the #define OFF 0...

  • Page 26: Accessories

    4. Snap the front and rear housing back together and reinstall the 8. SPECIFICATIONS screws. 5. Reattach the rubber boot. 8.1 Specifications Accuracy is given as ± ([ % of reading] + [number of least 7. ACCESSORIES significant digits]) at 18°C to 28°C with relative humidity up to 80%, for a period of one year after calibration.
  • Page 27 5 dgts Unspecified 11MΩ 10mV 3 dgts AC V 400V 0.1V 0.75% + 2.5% +5 dgts Approx. 750V 0.75% + 5dgts 5 dgts 3.5% +5 dgts 10MΩ AC A The same accuracy specs. as Model 509 NOTE: Same as above.

  • Page 28: General Specifications

    3.5% + 5 dgts 5 dgts VΩHz CAP 600V VΩHz CAP 600V AC A The same accuracy specs. as Model 509. VΩHz CAP 600V NOTE: Same above. 10A/600V mAµA 400mA/600V THD Measurement Accuracy (at 50/60Hz ± 0.1Hz) Voltage ± (2% + 2 dgts) µA...
  • Page 29 Relative Humidity : 0% to 80% (0°C to 35°C; 32°F to 95°F) 0% to 70% (35°C to 45°C; 95°F to 113°F) 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 Without Backlight : 200 hrs typical (alkaline)

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