Pro's Kit MT-2019 - Resistance Measurement; Zeroing, Lead Connection, and Reading; Range Selection; Diode Measurement

6
tester.
(This tester can afford the voltage <250V DC/AC rms. for the period of 5
seconds max.)
Resistance Measurement
WARNING: DO NOT APPLY VOLTAGE TO MEASURING TERMINAL WHILE
RANGE SWITCH IS IN OHM POSITION.
1. Set the selector switch to the appropriate Ω range to be used.
2. Connect the BLACK test lead to the “-COM” jack and the RED test lead
to the Red “+” jack.
3. Short the leads by touching the probes together. Pointer should read
zero at the right hand end of the uppermost scale, if it doesn’t, use the 0
Ω adjust knob on the right hand of the panel to line up the pointer with
zero. (If pointer can’t be brought to zero, replace battery.)
4. Connect the test leads across the resistance to be measured.
5. Take reading on the top “Ω” scale and multiply it by the multiplication
factor indicated by the selector switch.
6. If there is little or no pointer movement from the left side of the scale,
reset the selector switch to higher range. The effective reading scope on
an Ω meter scale is within the area of between 25 degree of Arc left side
to the Midscale and 25 degree right side to the Midscale.
Note: If connected incorrectly with the voltage, quickly remove the test
leads from the circuit as to avoid the damage to this tester. (This tester
can afford the voltage <250V DC/AC rms. for the period of 5 seconds
max.)
Diode Measurement
Set the selector switch to the appropriate Ω range to be used.
NOTE: To test the diode while current below 0.060 mA at X 10K range;
current below 0.15 mA at X 1K range; current below 1.5 mA at X 100 range;
current below 15 mA at X 10 range; current below 150 mA at X 1 range.
For IF (forward current) Test
Put the BLACK test lead to the “-COM” jack and the RED test lead to the
Red “+” jack. And then connect the Black probe to the Positive terminal of
the Diode, the Red probe to the Negative terminal of the Diode.
For IR (reverse current) Test
Reverse the connection.
1. Read the value IF or IR of the diode on the LI scale.
2. Read the linear (forward voltage) VF of the diode on the LV scale.