The Philips digital multimeter PM 2422 A is an accurate 3+1 digit instrument with a maximum reading of 1999 to measure: - DC and AC voltages of 100 pV ... 1000 V (600 V AC,) 5 ranges - DC and AC currents of 100 nA ... 2 A, 5 ranges - Resistances of 0.1 Q ... 20 Mfi, 6 ranges - DC high voltages up to 30 kV with the EHT probe PM 9246 - UHF voltages with UHF probe PM 9200 up to 800 MHz. For frequencies above 30 MHz it is advisable to use T-connector PM 9250 in conjunction with this probe. - DC and AC currents up to 31.6 A with shunt PM 9244 - AC currents up to 100 A with current transformer PM 9245 Operation of the instrument is easy. Selection of the measuring ranges .$ effected by a rotary switch, and AC and DC selection by push-buttons. The decimal point is set automatically by switching the ranges. The polarity of direct voltages and currents is indicated automatically. Only the -sign is displayed. The instrument is protected against overloads on all ranges up to at least 250 V. This efficiently designed instrument can be employed for all applications in modern electronics. TECHNICAL DATA Properties expressed in numerical values with tolerances are guaranteed by the manufacturer. Numerical values without tolerances are given for general information and represent the properties of an average instrument. The data below are applicable at 23 C + 1 C unless otherwise stated.