Delta RetroSign GRX-1 User Manual page 31

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The series name is shown at the upper part of the screen. The inspection automatically
inherits the data fields from the series. You just need to fill out the fields e.g. Sign ID. If
needed, it is possible to alter the individual data fields at this level.
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When the 'pass/fail check' is activated (as in the example above), you may enter the
threshold performance value(s) for background, legend, and/or contrast. Type '0' or leave the
field blank if a performance check for one of these is not needed.
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Optional: Select the relevant MUTCD sign to update the pass/fail thresholds for MUTCD
retroreflectivity compliance testing (see below section for further instructions).
Note: You can change to 'single shot' mode directly from the inspection screen. If you do so, the
series chosen will be updated with this setting.
Note: to activate barcode or QR code reading (optional feature) for a field or to delete a field, just
swipe the field from right to left – and this appears on the screen:
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Press the 'Scan'-icon to choose barcode reading, or press the 'Remove'-icon to delete the
field.
How to select MUTCD sign (optional feature - USA only)
For the USA market, the GRX uses the MUTCD library to identify the particular type of sign that is
being inspected and to check that the reflectivity of the sign is above the minimum maintain reflectivity
level (see section MUTCD library for further details). Follow the below instructions to select the
relevant MUTCD sign.
RetroSign GRX User Manual / December 2017
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DELTA