Martel Electronics LC100 - Manual (Page 12)

D. Milliamp Measure with Loop Power
Again, Figure 5 shows the proper connections.
But in this case the device under test is a two-
wire transmitter that requires an external power
supply to generate an output current. In this
application the LC100 will supply 24 volts to the
loop while simultaneously measuring the result-
ant loop current. To turn on the loop power
supply press the key while in the
mA measure mode.
Figure 5 - Measuring 4 to 20 mA
NOTE: The loop power mode can only be
enabled while in the mA measure mode.
E. Voltage Measure
Figure 6 shows how to connect the LC100 to
measure DC voltage up to 28 volts. To activate
the volts measure function simply press the
key to toggle through the functions
until the volts measure mode is reached. The
MODE
LOOP PWR
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