Robert Bosch LLC
MMD 540H Instruction Manual | Version 1 | December 2010
MMD 540H Instruction Manual | Version 1 | December 2010
Robert Bosch LLC
Meter Functions – Capacitance (CAP)
IMPORTANT: Turn the power OFF to the test circuit
f
Select the Capacitance “
CAP
”
function with the rotary switch
and mode button
Insert:
f
Black lead in
COM
terminal.
f
Red lead in
V-Ω-RPM
terminal
CAUTION: When checking in-
circuit capacitance, be sure that
the circuit has all power removed
and all capacitors are fully
discharged.
Touch the test lead probes across
the capacitance circuit to be tested.
Read the measured value from the
LCD display.
NOTE:
1. The bar graph is disabled in
capacitance measurement mode.
However, since the measurement
time of 4mF and 40mF modes
is quite long (3.75s and 7.5s
respectively, to be precise), the bar graph is instead used to
display the time required to accomplish the measurement.
2. In order to obtain an accurate reading, a capacitor must be
discharged before measurement begins. The meter has a built-
in discharge mode to automatically discharges the capacitor. In
discharge mode, the LCD displays “DIS.C”
3. Discharging through the chip is quite slow. We recommend the
user to discharge the capacitor with some other apparatus.
16
| MMD 540H Hybrid Multimeter |
Meter Functions
Meter Functions – Audible Continuity ( )
IMPORTANT: Turn the power OFF
on the test circuit
f
Select the
Audible Continuity
“ ” function with the rotary
switch and mode button.
Insert:
f
Black lead in
COM
terminal.
f
Red lead in
V-Ω-RPM
terminal.
Connect one test probe to each
end of the circuit to be tested.
f
Circuit complete, the meter will
beep continuously.
f
Circuit open, there is no beep
and the display shows to OL
(over limit).
MMD 540H Hybrid Multimeter |
Meter Functions | 17
Black–
Red+
Circuit open
- no beep
Black–
Red+