Honeywell Mini-AT, User Manual, Page: 88 / 156

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Page 88
Mini-AT User Guide
Putting the Mini-AT into “Shutdown”
Shutdown is a ‘mode of operation’ invoked by the user prior to placing the instrument into storage or
prior to performing some type of board maintenance. The Mini-AT Link software manual describes
the procedure for putting the Mini-AT into Shutdown.
There are two types of Shutdown that can be induced into the Mini-AT, Partial and Complete . The
connection status of the battery packs determines which type of Shutdown the instrument assumes.
1)
Partial Shutdown:
To put the Mini-AT into “partial shutdown”, from MasterLink32 software, select
and confirm “SHUTDOWN” from the “Instrument” menu. Leave the main battery and backup battery
plugged-in.
In partial shutdown, the instrument’s real-time clock will continue to update; however, new
volume pulses will not be counted and the instrument will not display corrected gas volume. The
LCD will show dashes “- - - - - - - -” across the display. The instrument still draws normal back
ground current from the main battery when placed in partial shutdown, but it preserves all item
values and audit trail information.
To recover from a partial shutdown, i.e., return to Correct Mode, simply establish a serial link
with the Mini-AT using the standard Mini-AT to computer cable (40-1629) and any software
package that communicates with the Mini-AT.
2) Complete Shutdown: To put the Mini-AT into “complete shutdown”, from MasterLink32 software,
select and confirm “SHUTDOWN” from the “Instrument” menu, then pull the plugs to both the main
battery (or other power source) and the backup battery (J26). In complete shutdown, the instrument’s
clock will stop working and new volume pulses will not be counted. The instrument’s configuration data
and all item values are retained in E
2
PROM, however, audit trail and AGA8 data will be lost. The
LCD display will be blank once the batteries are unplugged.
In order to bring the Mini-AT out of a complete shutdown, simply plug in the main battery and
the backup battery. It will be necessary to reset the date, time, corrected volume, uncorrected
volume and other items that were erased as a result of the complete shutdown.