Important - Bosch MMD 540H Mode D'emploi

4 | MMD 540H Hybrid Multimeter | Safety
Safety Cont'd...
DANGER
f Avoid electrical shock: do not touch the
test leads, tips or the circuit being tested.
f Do not try a voltage measurement with the
test leads in the 20A or the mA terminal.
f When testing for the presence of voltage or current, make sure
the meter is functioning correctly. Take a reading of a known
voltage or current before accepting a zero reading.
f Choose the proper range and function for the measurement. Do
not try voltage or current measurements that may exceed the
ratings marked on the Function/Range switch or terminal.
f When measuring current, connect the meter in series with the
load.
f Never connect more than one set of test leads to the meter.
f Disconnect the live test lead before disconnecting the common
test lead.
f The mA and the 20A terminals are protected by fuses. To avoid
possible injury or damage, use only in circuits limited to 400mA
or 20A for 30 seconds.
See also...
f Fuse Replacement
Robert Bosch LLC MMD 540H Instruction Manual | Version 1 | December 2010
MMD 540H Hybrid Multimeter | Safety | 5
Safety Cont'd...

IMPORTANT

f To maintain accuracy of the meter, replace the discharged
battery immediately when the symbol "BAT" appears on the
meter display.
f Avoid measuring error from outside interference. Keep the meter
away from spark plug or coil wires.
f Avoid damaging the meter when testing voltage. Disconnect the
test leads from the test points before changing functions.
f Do not exceed the limits shown in the table below:
Function Terminal
DC/AC Volts, V-Ω-RPM
Ohm†/Continuity /
Diode,CAP.,IR- TEMP.
Adaptor, Type-K
TEMP.,Hz,%Duty, Ms
Dwell, RPM
AC/DC μA mA μA / mA
AC/DC20A 20A
*20 Amp measurement for 30 seconds maximum.
†Ohms can not be measured if voltage is present, ohms can be
measured only in a non-powered circuit. However, the meter is
protected to 600 volts.
MMD 540H Instruction Manual | Version 1 | December 2010
Input limit
600VoltsAC DC
400mA DC/AC
*20A DC/AC
Robert Bosch LLC