Honeywell Mini-AT, User Manual, Page: 74 / 156

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Page 74
Mini-AT User Guide
Flash Access Override Jumper
Pins 1 & 2 of Jumper Block 24 (JB24) provide Flash Access Override. With a jumper across pins 1
& 2, the LOADER firmware is forced to execute after an instrument RESET. An instrument RESET
is defined as: Unplugging the main and backup batteries from the main board (for at least 20-sec-
onds) and then, plug-in both batteries. By default, the jumper is removed.
LOADER firmware is a computer program, resident in the Mini-AT’s internal memory, for the sole
purpose of allowing a user to upgrade the Mini-AT’s application firmware. The LOADER firmware
may also be upgraded when LOADER enhancements become available.
Note: The Mini-AT cannot return to the application firmware while this jumper is in place.
Force Factory Defaults Jumper
Pins 3 & 4 of Jumper Block 24 (JB24) provides a means to Force Factory Defaults. With a jumper
across pins 3 & 4, the Mini-AT will be configured to factory defaults after an instrument RESET
(Unconfigured). An instrument RESET is defined as: Unplugging the main and backup batteries from
the main board (for at least 20-seconds) and then, plug-in both batteries. By default, the jumper is
removed.
Note: During Force Factory Defaults, the status of Event Log Lock and the values for Transducer
Coefficients and Transducer Serial Number items remain unchanged.
1 3 5 7 9
2 4 6 8 10
JB24
(with jumper on pins 1 & 2)
1 3 5 7 9
2 4 6 8 10
JB24
(with jumper on pins 3 & 4)