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21January2021/Version 0
LEM International SA
Chemin des Aulx 8
1228 PLAN-LES-OUATES Switzerland
www.lem.com
6.3. Boot screens
6.3.1. Overview
Boot screens provide general information on the device. The sequence rolls on a regular basis
and can be overridden by a started transactions or a pressed button. The sequence ends with a
screen test sequence, allowing to visually check the proper functioning of the whole pixel matrix.
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Screen
index
Solution
1/8
Company logo
Serial number of device
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Identifiers of the versions of each firmware parts
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Integrity checksums for legally relevant firmware parts
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Public key of the device, for LEM format authenticity check (i.e. without OCMF RFC5480 header)
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Screen test sequence
6.3.2. Effect of buttons
Buttons used in this state abort the sequence and lead to the maintenance state.