Prokit's Industries 303-150NCS - Manual (Page 8)

8
DC CURRENT MEASUREMENT
1. Connect the red test lead to the "V.Ω.mA" jack and the black
test lead to "COM" jack. (For measurements between 00mA
and 10A, remove red lead to "10A" jack.)
2. Set the rotary switch at desired DCA position.
. Open the circuit in which the current is to be measured, and
connect test leads in series with the circuit.
. Read current value on LCD display along with the polarity of red
lead connection.
AC VOLTAGE MEASUREMENT
1. Connect the red test lead to "V.Ω. mA" jack and the black test
lead to the "COM" jack.
2. Set the rotary switch at desired ACV position.
. Connect test leads across the source or load being measured.
. Read voltage value on the LCD display.
RESISTANCE MEASUREMENT
1. Connect the red test lead to "V. Ω. mA" jack and black test lead
to the "COM" jack. (The polarity of red lead is positive "+".)
2. Set the rotary switch at desired "Ω" range position.
. Connect test leads across the resistor to be measured and read
LCD display.
. If the resistance being measured is connected to a circuit turn
off power and discharge all capacitors before applying test
probes.
DIODE TEST
1. Connect the red test lead to "V.Ω.mA" jack and the black test
lead to the "COM" jack (The polarity of red lead is positive "+".).
2. Set the rotary switch at " " position.
. Connect the red test lead to the anode of the diode to be tested
and the black test lead to the cathode of the diode. The approx.
forward voltage drop of the diode will be displayed. If the con-
nection is reversed, only figure "1" will be shown.