Bosch MMD 540H Instruction Manual page 23

22 | MMD 540H Hybrid Multimeter | Meter Functions
Meter Functions – Duty Cycle (%)
Ñ
Select the "%DUTY"
Cycle function with the
rotary switch.
Insert:
Ñ
Black lead in COM
terminal.
Ñ
Red lead in V-Ω-RPM
terminal.
Connect the Black test
probe to ground.
Connect the Red test probe
to the signal wire circuit.
The illustration for a mixture
control solenoid is shown
with the metering rod in the
closed position. The meter
will display the percentage
of time the plunger is in the
closed position. (low duty
cycle) during one duty cycle.
Robert Bosch LLC
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MMD 540H Instruction Manual | Version 1 | February 2008
Red+
Mixture
Control
Shown