Omega Vehicle Security 450 User Manual
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e.
Move the DVM HI lead to the “3.7V”
testpoint and record the voltage (disregard
polrity).
f.
The voltage measured at the “3.7V” test-
point should be 3.007 times larger than
the voltage measured at the “-1.23V” test-
point. Adjust Rc (which varies the +3.7V
line to attain the proper ratio.
g.
Adjust Rb for an indicator display of 32.2
°
F.
h.
Adjust Ra for an indicator display of +196.0
°
C.
i.
Reassemble the indicator.
Perform the zero calibration