User manual VOLTCRAFT VC940 V06-09

[. . . ] These operating instructions are a publication by Voltcraft®, Lindenweg 15, D-92242 Hirschau/Germany, Phone +49 180/586 582 7 (www. These operating instructions belong with this product. They contain important information for putting it into service and operating it. This should be noted also when this product is passed on to a third party. [. . . ] Replace defective test leads immediately with new ones; do not use defective test leads!You can switch the display from 40, 000 counts to 4000 counts in the following way: Hold down the blue button while turning on the device. This function is automatically deactivated when the device is shut off. Pour mesurer les tensions continues, procédez comme suit : Connect the black test lead to the COM jack and the red test lead to the V jack so that they are lying flat on the measuring device. If a minus sign ("-") appears in front of the measured value for a DC voltage, the measured voltage is negative (or the test leads are reversed). Do not touch circuits or parts of circuits if there could be voltages higher than 25 VACrms or 35 VDC in them. proceed as follows to measure the frequency: · Connect the black test lead to the COM jack and the red test lead to the V/Hz jack so that they are lying flat on the measuring device. Hz %" and press the blue button once quickly. To measure the duty cycle, press the blue button again until "%" appears on the display. Do not touch circuits or parts of circuits if there could be voltages higher than 25 VACrms or 35 VDC in them!Temperature measurements can only be performed with the input jacks "V°C" = plus and "COM" = minus and only using type K thermocouple probes. Insert the plugs from the supplied type K thermocouple probe into the "V°C" and "COM" jacks, ensuring correct polarity; the temperature is now shown on the main display (12) in °C (= Celsius). You can switch the temperature units from Celsius to Fahrenheit by pressing the blue button. The supplied wire thermocouple probe can be used to measure temperatures of up to +230°C. Using an optional adapter, other temperature probes with standard miniconnectors can be connected to the DMM. Both measuring ranges are provided with fuses and thus protected against overload. in the AC range , the current is measured as a true RMS value. You can switch to "AC+DC-coupled True RMS" by pressing the yellow push button. proceed as follows to measure A and mA currents: · Connect the black test lead to the COM jack and the red test lead to the mA/A jack. Now connect the two probe tips in series with the measurement object (battery, circuit, etc. Never measure currents that are higher than 400 mA in the mA/A range because this triggers the miniature fuse. In this range, currents of up to 10 ADC/AAC can be measured. [. . . ] Never operate the measuring device when it is open. Even batteries protected against leaking can corrode and thus release chemicals that may be detrimental to your health or destroy the device. Always carefully follow the safety instructions when replacing fuses!Make sure that only fuses of the type and rated current specified are used as replacements. [. . . ]