Simpson 2 Series - Page 29

Operating Instructions
For the 100 MA. range read the 0— 10 figures and
multiply by 10.
For the 500 MA. range read the 0—50 figures and
multiply by 10.
The current values are in milliamperes.
7. Turn off the circuit power. Remove the test leads and
restore circuit continuity.
MEASURING DIRECT CURRENTS,
500 MILLIAMPERES TO 10 AMPERES
1. Connect the black test lead in the -10 A. jack and the
red test lead in the +10 A. jack.
2. Set the range selector switch at 10 AMPS (common with
10 MA.).
3. Open the circuit which is to be measured. Connect the
meter in series with the circuit. Connect the red test
lead toward the positive side and the black test lead
toward the negative side of the circuit.
4. Turn on the power in the circuit which is to be mea-
sured. Observe the meter. If the pointer is deflected
to the left, the current polarity is opposite to that which
was anticipated. Turn off the power, reverse the test
lead connections, and turn on the power again.
5. Read the current directly on the black D.C. arc. Use
the 0—10 figures. The current values are in amperes.
6. Turn off the circuit power. Remove the test leads and
restore circuit continuity.
27