Delta RetroSign GRX-1 User Manual page 34

later in section 3 Operating information for further details). You may alter the threshold offset
value to a higher level than the required level (e.g. 10 % as in the example below).
•
Press 'done' to transfer the information (e.g. MUTCD code, sheeting type and pass/fail
threshold) to the data fields. (or press 'cancel' to abort).
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RetroSign GRX User Manual / December 2017 DELTA