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SETUP USING JUMPERS & POTENTIOMETERS
LCA operating parameters are selectable with com-
binations of push-on jumpers on the circuit board, as
shown on the next two pages of this manual. Please
review the default jumper settings to see if you need
to move jumpers.
To move jumpers from their default settings, first
open the case. As shown in Figure 1, use a screw-
driver to pry apart the two clamshell halves, which
snap together. With the case open, locate the pin
forest headers on the circuit board, which are high-
lighted in gray in Figure 2 and are labeled
E1
thru
E8
.
After resetting jumpers and with the case still open, apply signal and power, and use a
multimeter to measure the signal output. Use a small flat-blade screwdriver to rotate the
25-turn zero and span potentiometers. Verify that the unit can be calibrated as expected,
thereby confirming that your jumper settings are correct.
When done, align the lid of the clamshell case so that the zero and span potentiometers
can be adjusted through holes in the top of the lid, then snap the case shut again.
Figure 2.
Circuit board showing potentiometers, jumper locations, and factory default jumpers.
Figure 1.
Opening clamshell case.
