Smart Tweezers Digital MultiMeter

Frequently Asked Questions

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1. What Smart Tweezers is mostly used for?

Smart Tweezers is an unrivalled tool for identification of electronic components; Smart Tweezers does this job in one touch speeding the identification hundreds of times. Besides, it is fully automatic.

2. How accurate is Smart Tweezers?

Typical accuracy is better then 1%.

3. Can Smart Tweezers be used on a PCB?

Yes, if you know the circuit and understand how it works. It can also be used for voltage measurements in a working circuit to debug it. By measuring a voltage drop on a resistor (resistance value can be also measured using Smart Tweezers) the current through the resistor is easily calculated.

4. Batteries discharge very quickly, what was done wrong?

Two typical mistakes leading to a quick discharge of batteries:

a)      the Toggle switch at the bottom left corner of the Smart Tweezers is not returned to the default position after voltage measurement is done; and

b)      the Test Frequency is set to 10KHz. In the latter case Smart Tweezers do not turn off automatically due to parasitic capacitance of the tweezers tips leading to a current flowing through it. Change Test Frequency to Auto after measuring something at high frequency.

5. Can Smart Tweezers measure current?

By measuring a voltage drop across a resistor Vr (resistor value R can be also measured using Smart Tweezers) the current through the resistor is easily calculated Ir=Vr/R.

6. What happens if the measured voltage exceeds 8V limit?

The Smart Tweezers design provides protection if voltage exceeds 8V limit. The maximum allowable voltage is 24 V.

7.      What if Smart Tweezers automatically turns off too quickly.

The turn-off time can be user selected in SYSTEM -> DISPLAY -> TIME-OUT

8.      Is Smart Tweezers only for right hand?

You can adjust Smart Tweezers for left hand. Switch mode SYSTEM and choose LEFT

9.      What does it mean that Smart Tweezers is factory pre-calibrated?

Smart Tweezers does not require any calibration. Every single Smart Tweezers is calibrated upon assembly at the factory using a special calibration jig. This jig is annually certified by JOLA Instruments Inc. and calibration certificate is NIST and NRC traceable.

10.  Is Smart Tweezers design patented?

The patent is in force in Europe, USA, Canada, Japan, China, Taiwan, Hong Kong and India.

11.  How to extract parasitic probe capacitance of Smart Tweezers?

The Smart Tweezers parasitic capacitance depends on the distance between the tips, i.e. the component size. To obtain the value of the capacitance of the Smart Tweezers probes of you have to do following:

a)      Select capacitance measurement by setting MEASURE -> MODE -> CAP. Letter C indicates that you selected capacitance measurement.

b)      Select measurement frequency 10 kHz by setting MEASURE -> FREQ -> 10 kHz

c)      When you squeeze the probes until the size of the gap is equal to the size of component the parasitic capacitance value is displayed on the screen. This value should be subtracted from any measured capacitance of the same size. Typical parasitic probe capacitance is about 1.65 pF.

12.  How Smart Tweezers can be calibrated for Voltage measurements?

You have to calibrate Smart Tweezers if measured values for two different polarities of the same source differ by more than 1%.

For calibration you have to do following:

a)      Select MEASURE -> VOLTAGE

b)      Connect the probes to each other and select MEASURE -> VOLTAGE -> CALIBR

c)      As soon as you see DONE on the screen you have to select AUTOSET -> EXIT and disconnect the probes.

13.  How to measure DC voltage?

Smart Tweezers can measure Voltage DC in range from 0 to 8 Volts. To switch Smart Tweezers to this mode you have to do following:

a)      Select MEASURE -> VOLTAGE -> AUTO -> EXIT.

b)      TOGGLE SWITCH is displayed on the screen and the beeper sounds. Change the Toggle Switch position at the bottom left portion of the Smart Tweezers to the rightmost position.

c)      Please note that you must return to the AUTO mode after you finished measuring voltages. Therefore press the Jog Dial button, change the Toggle Switch position to the default (leftmost, toward the probes), and select Mode -> AUTO -> EXIT.

 

 

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Designed and Manufactured In Canada. Patented in USA, Canada, Europe, Japan, China, Taiwan, Hong Kong, India.