Lets the user know if symbol quality is less
than acceptable.
Definition:
If enabled, togglesOutput 1to an active state whenUEC Thresholdis met.
Serial Cmd:
<K800,output on symbol contrast,symbol contrast
threshold,output on printgrowth,print growth threshold,output on axial
non-uniformity,axial non- uniformity threshold,output on UEC,UEC
threshold>