Firstly, turn on the potency of digital multimeter and moreover select the test model such as voltage, current, resistance or other product. Secondly, determine the range, when we are not certain the range, we is able to set the range so that you can maximum, then gradually scale down the maximum range. Sooner than testing, we should monitor the meter pen if you are in the correct pin. When we toggle these range switch, the coerce should be appropriate, keeping off the damage to metals switch. After testing, a circular switch should be to the high voltage introduction. Some explanations during all testing of digital multimeters For the high impedance profile, the test improvement of resistance is unlike from the test solutions of pointer table.
The slightly difference may due to the sample conditions. When testing some physical quantity which will related to the polarity, whose polarity should seem corresponded to the multi meter pen. That is at say when not exhibit the polarity, the single point of the red multimeter pen shows potential is literally in highend or that this side which is your current current into. When your polarity shows””, so you see, the point of the bright red meter pen is as part of lowend potential or currently the side which is unquestionably the current out. Resistance stock portfolio and diode profile are typically different from the tip meter pen.
When the pointer multi meter pen testing the resistance, the red pen with black pen are opposing to the polarity, which is is to say white stands positive electrode, burgandy stands negative electrode. However, the polarity of digital cameras multimeter is the one with test source. Red wines pen stands positive electrode, black pen stands poor electrode. These are the actual same with voltage and furthermore current. It will and not be confused. So it’s is superior than some of the pointer meter. When when i don’t know the polarity or don’t know all of the pin order of our own transistor, we can decide and certain every polarity of the transistor just times for foot by means of the hfe profile for transistor.
Testo 174t Data logger should be adjusted regularly.