TA018 AC/DC mA CURRENT CLAMP USERS GUIDE CLAMP 300V CAT.II 60AINTRODUCTION The AC/DC mA Current Clamp is a transducer which will allow your multimeter to measure low electrical or/and elec- tronic current up to 60 amperes AC/DC, with a frequency response up to 20kHz. When measuring current with this clamp, there is no need to break a circuit or to disturb the insulation. The extended measurement jaws allow performing mea- surements in a narrow space. When measuring DC current, a simple operating push button is designed for zero adjustment. The clamp adaptor is applicable to leakage detec- tion or monitoring. APPLICATION PROCEDURES 1. Connect the BNC plug to the input of any oscilloscope or other measuring instrument with an input impedance of at least 10 k. 2. Set the power switch from OFF to the desired range, 1mV/10mA or 1mV/100mA position. The green LED will light to indicate that the clamp is switched on. 3. For current measurement below 2A, set the unit to 1mV/ 10mA range and set the oscilloscope to 200mV AC range for AC current measurements, or 200mV DC range for DC current measurements. If the measured current exceeds 2A, set the unit to 1mV/100mA range. 4. When perform DC current measurement, always push the zero adjustment button on the clamp until the oscilloscope reads zero. 5. Clamp the jaws around the current-carrying conductor and interpret the reading according to Step 3 above. 6. When 1mV/10mA range of clamp unit is selected, multiply the reading displayed on the oscilloscope by 10 to interpret the measured current value in mA. For example, if the oscilloscope reads 10mV, the measured current is 10x10=100mA. When 1mV/100mA range is selected, multiply the reading displayed on the oscilloscope by 100 to interpret the measured current value in mA. For example, if the oscillo- scope reads 5mV, the measured current is 5x100=500mA.