Simpson 260 Series 8 - DC Current Measurement: 0-1 mA to 500 mA; DC Current Measurement: 0-10 A Range

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4.15.2 Direct Current Measurement 0-1mA through 0-500mA
Range
a. Set the function switch at
+DC (Figure 4-11).
b. Plug the black test lead into
the – COMMON jack and
the red test lead into the +
jack.
c. Set the range switch at one
of the four range positions
marked 1 mA, 10 mA, 100
mA or 500 mA.
d. Open the grounded side of
the circuit in which the cur-
rent is being measured.
Connect the VOM in series
with the circuit. Connect the
red test lead to the positive
side and the black test lead
to the negative side.
e. Turn the power on. Read
the current in milliamperes
on the black DC scale. For
the 1 mA range, use the 0-
10 figures and divide by 10.
For the 10 mA range, use
the 0-10 figures directly.
For the 100 mA range, use
the 0-10 figures and multi-
ply by 10. For the 500 mA
range, use the 0-50 figures
and multiply by 10.
f. Turn the power off and dis-
connect the test leads.
This range is only intended for measurements in low voltage circuits (under 25 V
DC) such as the primary power in vehicles or their accessories.
4.15.3 Direct Current Measurement 0-10A range
a. Plug the black test lead into the –10A jack and the red test lead into the +10A
jack.
b. Set the range switch at 10 AMPS (dual position with 10 mA).
c. Open the grounded side of the circuit in which the current is being measured.
Connect the VOM in series with the circuit, connecting the red test lead to the
positive side and the black test lead to the negative side.
NOTE: The function switch has no effect on polarity for the 10 AMPS range.
d. Turn the power on. Read the current directly on the black DC scale. Use the
0-10 figures to read directly in amperes.
Figure 4-11. Jacks and Switch Positions for
Measuring Direct Current
D
.C
.
D
.C.
500 MA.
50 A.
␮ AMPS.
100MA.
10MA.
AMPS.
1MA.
-10 A.
OUTPUT
350 VDC
MAX.
+
COMMON
-
A.C. VOLTS
ONLY
- D.C.
+ D.C.
OFF
260
ALL TERMINALS 1 V MAX
+1V.
+10A
50 ␮ AMPS.
250 MV.
+
!