Zero Reflector Adjustment - Emerson OPM4001 Installation And Operation Manual

I N S T R U C T I O N M A N U A L

ZERO REFLECTOR ADJUSTMENT

After a clear or off stack zero has been performed the zero reflector needs to be adjusted.
1. Find and record the zero offset value found in the set
up page under "Zero Cal Value".
2. On the service Module place the Opacity/ T2 switch
in the Opacity position to observe the correlated
opacity on the digital display.
3. Swing open the transceiver and initiate a zero with
the zero switch on the service module to raise the
zero reflector into place. Observe and record the
zero value after 30 seconds. Return the mirror to
normal resting position by returning the zero switch
to operate position.
4. If required, insert a 1/16" Allen wrench into the adjustment set screw located on the top of the zero reflector. Turn
the set screw clock-wise 1/8 turn.
5. Remove the Allen wrench and initiate a zero utilizing the zero switch on the service module and after 15 seconds
observe the reading is moving toward the desired value. (If value is away from desired repeat step 4 turn set screw
C.C.W.)
6. Repeat steps 4 & 5 each time making small 1/8-turn increments until the desired value is reached. Cycle 2-3 times
more waiting 15 to 20 seconds between cycles to assure unit repeats desired value +/- 0.5% Opacity. Swing
transceiver into operate position and secure in place. Record the zero final value.
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