
DRAWING No.EM7000 09-1306 2040 2040
6-6-2 ±DCA (±DCA ) Maximum measurable current ±DC 150 mA
1) Objects of measurement
This function is useful for measuring circuits where the current
directions ± are not constant such as a detection circuit.
2) Measuring ranges (5 ranges)
±0.06 µ/±0.15 m/±1.5 m/±15 m/±150 mA
3) Measurement procedure
0
A
•
V
C
D
±
+
-
Insert the red plug of
test leadsinto the +input
terminal, andthe black
plug into the –COM
terminal.
Turn the function/range
selector to the appropriate
blue ±DCA range at the
lower left.
Turn on the power switch
(power ON: Lamp blinks).
Turn the electrical zero adjuster (ZERO ADJ) to adjust the
pointer to the zero position at the center of blue ±DCV
•
A scales.
Connect the black test pin to a measuring point on one side of
the circuit to be measured, and the red test pin to a measuring
point on another side through the load (in series).
Read the indication on the ±DCV
•
A scales in a unit of mA
(microampere) or mA (milliampere) depending on the range
used.
If the indication is on the right side of the zero position, the
red test lead is on the positive potential (voltage), and the
black test lead is on the negative one.
If the indication is on the left side of the zero position, the
red test lead is on the negative potential (voltage), and the
black test lead is on the positive one.
Detach the test pins from the circuit to be measured.
Turn off the power switch (power OFF: Lamp blinking goes off).
Observe the same precautions as those for the DC Current
(DCA ) measurement.
Battery
Resistance
(Load)
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EM7000_08_英_再校 13.6.10 1:26 PM ページ19
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