Jefferson JEFDMM300V, User Manual

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JEFDMM300V
300V DIGITAL MULTIMETER
USER GUIDE
v.1.1
EQUIPMENT IDENTIFICATION
The table below describes the features numbered in the diagram shown to
the right:
1 LCD Display 3.5 Digits (Maximum reading 1999)
2 H
Button: - Used to Enter / Exit “
Data Hold”
function
3 Function / Range Switch: - Used to select the required Function /
Range and turn the meter ON and OFF
4 10A Terminal: Plug in connector for the red test lead for current
measurements between 200mA - 10A
5 VΩmA Terminal : For all other measurements except current ≥
200mA
6 COM Terminal: Plug-in connector for the black test lead
MEASURING DC VOLTAGE
1. Connect the black test lead to the COM terminal and the red lead to the
VΩmA terminal.
2.
Set the
Function / Range
switch to the desired range position. If the
magnitude of the voltage is not known before hand you can set the range
to the highest range first and then reduce it range by range until a suitable
resolution is obtained.
3. Connect the test leads across the source or circuit to be tested.
4.
Check the DC Voltage reading on the display. The polarity of the red test
lead connection will also be indicated.
Note:
To avoid electric shock, personal injury or damage to the equipment
do not apply any voltage higher than the rated capacity of 300V between
the terminals
MEASURING AC VOLTAGE
1.
Connect the black test lead to the
COM
terminal and the red lead to the
VΩmA terminal.
2. Set the Function / Range switch to the desired range position. If the
magnitude of the voltage is not known before hand you can set the range
to the highest range first and then reduce it range by range until a suitable
resolution is obtained.
3. Connect the test leads across the source or circuit to be tested.
4. Check the AC Voltage reading on the display. The polarity of the red test
lead connection will also be indicated.
Note: To avoid electric shock, personal injury or damage to the equipment
do not apply any voltage higher than the rated capacity of 300V between
the terminals.
BATTERY TESTING
1. Connect the black test lead to the COM terminal and the red lead to the
VΩmA terminal.
2. Set the Function / Range switch to the corresponding BATT range
position.
3.
Connect the red test lead to the positive terminal on the battery and the
black test lead to the negative battery terminal.
4. Check the working voltage of the battery on the display.
DC Voltage
AC Voltage
Battery Testing