Mercury MTTR01, Руководство пользователя

Страница: 13 / 20

MTTR01 User Manual
2.
Plug the red probe into “10A” socket if measurement is 400mA upward
or “uA mA” socket if it is below 400mA. Plug the black probe into
“COM”. Ensure both plugs are fully inserted before taking
measurement.
3. Open the circuit to be measured. Ensure circuit is off and all capacitors
are discharged. Connect test leads in SERIES with the load in where
the current is to be measured.
4. Current reading will be displayed on LCD, press “Select” button to
choose between AC/DC measurements. For DC current measurement,
the polarity of the red probe will also be indicated.
Please note:
When the display shows the over range symbol “OL”, a higher range
must be selected. In addition “10A” function is designed for
intermittent use only.
RESISTANCE MEASUREMENT
1. Connect red lead to “-II-°C°F VΩHzhFE” and black lead to “COM”.
2. Set the range switch to “Ω ”, three functions are available by
pressing “Select”. For resistance measurement, press “Select” until “Ω”
is displayed on the screen. The resistance display is auto ranged and
can be manually adjusted by pressing the “Range” button.
3. If the resistance being measured is connected to a circuit, turn off
power and discharge all capacitors before measurement.
4. Connect test leads to the circuit being measured.
5. Read resistance value on the digital display.
Please note:
 For resistance measurements >1MΩ, the meter may take a few
seconds to stabilize the reading. This is normal for high-resistance
measurement.
 When the input is not connected, i.e. at open circuit, the symbol
“OL” will be displayed as an over range indicator.