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Robert Bosch LLC MMD 540H Instruction Manual | Version 1 | February 2008
Meter Functions – AC or DC Current (A)
IMPORTANT: All current measured fl ows
through the meter.
It is important that you do not:
Measure current greater than 600
Volts AC or DC, with respect to
ground.
Do Not Exceed 30 seconds when
measuring continuous current
between 1A-20A. Allow fi ve minutes
for cool down before continuing.
Select the “20A” or “mA” range with
the rotary switch.
Press the Mode button to select AC or
DC.
Insert:
Black lead in COM terminal.
Red lead in the 20A or mA terminal
(select 20A if you are unsure of the current draw).
IMPORTANT: Turn OFF all power to the circuit or disconnect the
circuit from the power source.
Connect:
The Red probe to the side of the circuit closest to the power
source.
The Black probe to the side of the circuit to ground.
Turn the power ON and test.
NOTE: Current must always be measured with the meter test
probes connected in series, as described
1.
2.
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18 | MMD 540H Hybrid Multimeter | Meter Functions
Black–Red
+
Round
ide