SEW 6420 DM, Instruction Manual

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time of measurement is only 50ms, the least
significant digit will not display.
(5)Diode Measurement
Diode measurement mode shares the same
configuration with 4.000 V manual voltage
measurement mode.
If the test circuit is open or the voltage drop
between the two ports of the device (diode) under
test are larger than 2 V, the LCD panel will show
"OL".
The buzzer generates a 2K Hz sound whenever
the digit number is less than 0.25V. Because the
cycle time of measurement is only 50ms, the least
significant digit will not display.
(6)Frequency measurement
Switch to frequency measurement mode.
Insert the BLACK test lead to COM and the RED
one to the Hz terminal.
Apply the test leads to the points across which the
frequency is to be measured, and read the result
directly from the display.
7. MEASUREMENT
Before proceeding with measurement , read the
safety notes.
(1)Voltage measurement
Insert the BLACK test lead to COM and the RED
One to the other terminal.
Switch to V function for ACV or DCV
function.
Use the test lead tip to the circuit and read the
reading of display directly.
If the readings exceed AC 600V(DC 600V), maybe
the reading value is wrong and it is dangerous.
(Refer to the safety notes)
(2)Current measurement
Switch to mA / uA or 10A
function
for AC current
or DC current measurement.
(3)Resistance Measurement
Switch to OHM range and make sure there is no
power in the circuit being measured. Insert the
BLACK lead to the COM and the RED one to
the OHM terminal.
Connect the test leads to the circuit or device
under test and read the display directly.
(4)Continuity Check
Continuity check shares the same configuration
with 400.0 manual resistance measurement
mode, but with buzzer output to indicate continuity.
The buzzer generates a 2KHz sound whenever
the digit number less than 35 . Because the cycle
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