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TM The Smart Tweezers is an innovative answer to the challenge of reducing size of SMT components. Holding this lightweight device in one hand you can test and troubleshoot circuits with all types of SMT components. MEASURING INDUCTANCE, CAPACITANCE AND RESISTANCE The primary display shows the reading of dominant parameter. The secondary display (on top) shows the present reading of additional parameters or measurement conditions when the primary display shows some other feature (L,C). When multiple features present, the secondary display shows one of the values. The Bar Graph provides an analog representation of the measured parameter. MEASURING VOLTAGE In the AUTO MODE, Smart Tweezers TM unit measures DC voltage up to 8V. In the unique TRACE MODE, it shows an oscilloscope like picture of AC voltage. CONTINUITY /OPEN TEST The beeper sounds for resistance readings below threshold, or to indicate a momentary open circuit. OVERVIEW QUICK REFERENCE The Smart Tweezers R-C-L meter (ST) is a portable impedance measuring device, capable of measuring resistance, capacitance or inductance over a range of more than eight (8) orders of magnitude. The Smart Tweezers has a basic accuracy of 1% (resistance) and has three (3) test frequencies. Display ST has a Primary Display, a Secondary Display, a Bar Graph and a Test Frequency Indicator. The sign in the bottom left corner of the display indicates that device is ON and ready to perform measurements. A, R, L or C indicate auto, resistance, inductance and capacitance respectively. ST is controlled by a microcontroller that operates the display and user interface, sets measurement conditions and processes data. The device has a unique mechanical design that allows measuring small SMT components with size down to 0201. SPECIFICATIONS Technical Specifications AC test mode test frequency: Test frequency accuracy: Test signal level: 1 kHz, 10 kHz, 100 Hz 0.25% 440+- 20 mV via 402Ω source Maximum Measurement Ranges Impedance/resistance: Capacitance C: Inductance L: Quality factor Q: Dissipation factor D: Phase angle F: 0.000Ω to 9.9 MΩ 0.0 pF to 4999 uF 0.5 uH to 999 mH 0.0002 to 500 0.002 to 500 -90.0 to +90.0 deg Maximum Resolution Impedance/Resistance Z or RAC: Capacitance C: Inductance L: Quality factor Q: Dissipation factor D: Phase angle F: Circuit diagram: 10 mΩ 0.1 pF 0.1 uH 0.001 0.001 0.1 deg 7 different equivalent circuit diagrams Auto mode read-out: Equivalent circuit diagram: Dominant parameter Parallel for R+C, serial for R+L Manual mode read-out: Equivalent circuit diagram: Dominant or secondary parameter Parallel or serial Measurement update rate: up to 4 measurements (1 default) Battery type: Battery life: 1.5 V LR44 (357A) Alkaline or Air zinc 70 Hours typical with alkaline, 200 hours with air zinc batteries Physical Specifications Size: Weight: Environmental conditions Operating temperature: Storage temperature: Relative humidity: Altitude operating: 0°C to 50°C -40°C to 70°C 0 % to 90 % (0 °C to 35 °C) 0 – 2000 meters Relative humidity: 0 % to 90 % (0 °C to 35 °C) Primary Display The Primary Display is located in the middle of the screen and is the larger of the two displays available. It shows the present major parameter reading. For most functions the primary display shows 5 digits. Secondary Display The Secondary Display is located at the top of the screen and is the smaller of the two displays. It shows the present reading of the minor parameters. Bar Graph The Bar Graph provides an analog representation of the measured major parameter and is located at the bottom of the display. MEASUREMENTS The default setting is to perform fully automatic auto range measurement for resistance, inductance and capacitance. Most measurement functions also have a manual mode, which can be selected by using the Jog Dial button. Use the manual setting when you need to measure a specific parameter or need better accuracy. Measurement Setting Menu To measure specific components or to change measurement parameters, use Measure menu. Measuring Resistance, Inductance or Capacitance For automatic measurement use AUTO setting (default). To measure only one parameter – resistance, inductance or capacitance set Smart Tweezers as shown in Fig. 13. 14.0 x 2.5 x 3.0 cm (3.94 x 0.9 x 1.5 in) 53 grams (0.11 lb) Note: When measuring small resistance, capacitance or inductance, make sure that terminals are clean. Rotate JogDial Left/Right to select menu items Push JogDial to set selected parameters or exit AUTOSET Push JogDial to enter Menu SOUND DISPLAY SYSTEM MENU HIERARCHY ON Sound ON OFF Sound OFF (except MENU mode) TONE TONE mode (resistance < 1 Ohm) <40 BEEP mode (resistance < 40 Ohm) RIGHT Right-Hand Display Indication mode LEFT CONTR TIME-OUT Left-Hand Display Indication mode Display Contrast adjustment Auto-Shutdown Time-Out (10 to 250 sec) 2.0 SEC PERIOD 1.0 SEC 0.5 SEC 0.25 SEC EXIT AUTO MODE MEASURE FREQ. VOLTAGE Resistance measurement mode IND Inductance measurement mode CAP Capacitance measurement mode AUTO Auto frequency mode 10 kHz Fixed frequency mode setting for specific measurements (large or small capacitance or inductance) 1 kHz AUTO Measure DC Voltage (up to 8V) TRACE Oscilloscope like Picture (real time trace) CALIBR Offset adjustment for DC Voltage measurement BATTERY EXIT Automatic measurement mode ( R,L or C) RES 0.1 kHz EXIT Reading Intervals Measure Battery Voltage