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Dvm1090 gb 1 dvm1090 – digital multimeter 1. Introduction & safety prescriptions thank you for buying the dvm1090. This digital multimeter has a large lcd, a data-hold function and a backlight. It is ideal for use in open air, workshops and schools and for home and hobby applications. 2. Safety the ...
Dvm1090 gb 2 cad ii overvoltage category ii, pollution degree 2 per iec1010-1 cat iii overvoltage category iii, pollution degree 2 per iec1010-1 2.2 maintenance • do not remove the back cover while a voltage is being applied. Only a qualified technician should handle repairs. • always disconnect the...
Dvm1090 gb 3 4. Specifications max. Accuracy is achieved during a one-year period after calibration. Ideal circumstances require a temperature of 18 to 28°c (64 to 82°f) and a max. Relative humidity of 75%. 4.1 general specifications measuring method dual-slope integration a/d converter sampling tim...
Dvm1090 gb 4 4.2.2. Ac voltage range resolution accuracy 200mv 0.1mv ±1.2% of rdg + 5 digits 2v 1mv ±1.0% of rdg + 5 digits 20v 10mv ±1.0% of rdg + 5 digits 200v 100mv ±1.0% of rdg + 5 digits 700v 1v ±1.2% of rdg + 5 digits input impedance : 10m Ω overload protection : 250v dc or rms ac for the 200m...
Dvm1090 gb 5 4.2.5. Resistance range resolution accuracy 200Ω 0.1Ω ±1.0% of rdg ± 3 digits 2kΩ 1Ω ±1.0% of rdg ± 1 digits 20kΩ 10Ω ±1.0% of rdg ± 1 digits 200kΩ 100Ω ±1.0% of rdg ± 1 digits 2mΩ 1kΩ ±1.0% of rdg ± 1 digits 20mΩ 10kΩ ±1.0% of rdg ± 5 digits open-circuit voltage : ±700mv overload prote...
Dvm1090 gb 6 4.2.9. Frequency range resolution accuracy 20khz 10hz ±1.5% of rdg + 5 digits sensitivity : 200mv rms and input no more than 10v rms overload protection : 250v rms ac 4.2.10. Transistor hfe range function hfe read the approximate hfe value (0-1000) of the transistor under test (all type...
Dvm1090 gb 7 5. Operating instructions 5.1. Using the data hold button press this button if you want the device to hold the measured value. Press this button again to disengage the data hold button. 5.2. Backlight press the light button when it’s getting too dark to read the lcd. The backlight extin...
Dvm1090 gb 8 2. Set the range switch at the desired v-range position. 3. Connect the test leads with the source or load under measurement. 4. Read the measured value from the lcd. The polarity of the red lead connection is also indicated. Remarks • the lcd displays the overrange indication “1” if th...
Dvm1090 gb 9 5.9. Measuring ac current warning deactivate the circuit to be tested before connecting it to the meter. 1. Connect the black test lead with the com jack and the red test lead with the a jack for current measurements up to 200ma. Move the red lead to the 10a jack for measurements up to ...
Dvm1090 gb 10 4. Read the value from the lcd. 5. When frequent capacitance testing is needed you should connect the multifunction socket (included) with the com & v/Ω/a sockets. Insert the capacitor’s pins in the “+” and “-“ connectors of the multifunction socket. Remarks • when measuring low capaci...
Dvm1090 gb 11 5.15. Diode test 1. Connect the black test lead with the com jack and the red test lead with the v jack. 2. Place the range switch in the range position. 3. Connect the red lead with the anode and the black lead with the cathode of the diode to be tested. 4. Read the value from the lcd...
Dvm1090 gb 12 6. Maintenance 6.1. Replacing the battery in order to avoid electroshocks, you should disconnect the test leads before opening the case or the battery compartment. 1. The sign appears on the lcd display when the battery needs to be replaced. 2. Loosen the fixing screw of the case and r...
