4.2 Measurement of AC/DC voltage
Turn the Rotary switch to “V”. Then plug black lead in “COM” socket, and plug red
lead in “V/Ω” socket. connect the test lead with the two ends of the circuit and then
directly read the reading on the LCD display
NOTE : 1. The inrush measuring funciton can only be change range manually, before
the test,if the voltage is unknown, manually set the measuring range to 700V and then
press the PH key to enter the INRUSH measuring function.
2. Don't measure the peak voltage more than 1000V, otherwise it might
damage the instrument ,if the screen only displays OL, it means that the tested voltage
is higher than DC1000V or AC700V.
3. Presse the SRLECT key in the ACV function to enter the voltage frequency
measurement mode, it can measure the the frequency range from 10Hz to 100KHz with
voltage higher than AC 30V~700V.
4.3 AC current measurement
Turn rotary switch to“~A” range. Press the trigger, opens the mouth of the clamp,
and hold wire ( put the wire in the clamp center ), read the reading directly
NOTE : 1. INRUSH measuring can only be manually setting range. when the current
value being measuring is unknow, turn the rotary switch to 1000A and press INRUSH
key to entry INRUSH measuring funciton.
2. When measuring current ,the clamp might hold only one wire,it is null to
catch one more another wire
4.4 Measurement of resistance,continuity and forward Voltage drop of diode
Warning! When measurement of resistance or continuity, make sure that no
voltage is with the circuit and components.
(1)
Turn the Rotary switch to the range of Ω/•)))/ . At this time, the meter is reserved
at resistance range.
(2)
Plug red lead in “V/Ω” socket, and plug black lead in “COM” socket
(3)
Connect the leads with the two ends of the circuit or component, and then read
the value of resistance.
(4)
Press SELECT key to change the range of •))) When the resistance measured is
less than about 90Ω±20Ω, the buzzer sounds. This is continuity testing.
(5)
When the test lead is under open-circuit or input-overload status, the display will
display “OL”.
(6)
When measuring diode,press the SELECT key to the function of .