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615 System Manual
Version 1.0 March 21, 2010
15
Both serial ports 3 and 4 can have jumpers set to select for 12 volts or +5 volts.
J2 does not recommend using +5 volts devices if it can be avoided, as it is quite easy to
damage a +5 volt device by plugging it into a port sup12 volts. Most all serial
scanners are available in the + 12 volt version. If a +5 volt device is used, it is
recommended that it is clearly marked as such. The maximum current is 500ma and is
over-current protected.
Serial Ports