12.11.3 OPTIONS
Options exist to allow the user to specify (1) the days REX is to be run, (2) the start time, and (3) the duration.
Additional options exist to specify ALIT end time and duration, as well as an option to update RC/V views with the
new schedule. The user need only specify these options, if desired. If not desired, the program will use its own set of
default options.
12.11.4 DEFAULT OPTIONS
Default options are as follows:
REX
The REX runs 7 days a week, beginning at midnight and running for 6 hours.
CM REX
The CM REX begins at 1:00 a.m. and runs for 5 hours.
ALIT
The ALIT ends at midnight with ``start'' time based on the amount of time needed to diagnose all
lines, or 5 hours, whichever is shorter.
NOTE:
The ALIT runs every day, regardless of options.
12.11.5 ERROR CHECKING
One of the goals of the REX scheduler is to diagnose all equipment in the office within at least a 1 week interval. If
this is not possible, a message will be printed on the ROP indicating this, along with an estimate of what percentage
of equipment will complete REX in a given week. The schedule will still go into effect (if the UPDATE option is used)
or the user may retry the command with a different set of days or hours.
Warnings are also issued if SM/SM-2000 REX and ALIT overlap in their start and stop times, as well as warnings for
CM and AM REX schedule conflicts. (This will not happen unless the user-specified options override the default
options.)
12.11.6 OUTPUT
The ROP output gives the calculated REX schedule by day; that is, each day of the week is shown with a list of the
SMs/SM-2000s running on that day. This list is duplicated for each of the REX test types (DGN, FAB, and ELS).
Start time and duration are given at the top, as they will be the same for each day. The ALIT schedule shows start
time and duration.
12.11.7 RECOMMENDATIONS FOR USE
The tool should be run for any new office that comes on line, as well as any times of major equipment growth, or
change in maintenance hours and days. If the tool is rerun to try out different combinations of hours or days, no
penalty is incurred, even if the UPDATE option is used. The REX schedules take effect only at midnight. Thus, a
schedule that begins REX at 10:00 p.m. will not go into effect until the following day.
12.12 DIAGNOSTIC FAILURES
12.12.1 GENERAL
Since REX is nothing more than an automatic scheduler of tests, diagnostic tests are treated by the diagnostic itself
and the diagnostic control software as they were a manual input request from the MCC. If the unit that was
scheduled fails a test, it is removed from service, the failure is noted through an output message on the ROP, an
appropriate alarm is generated, a trouble location procedure (TLP) process is invoked to locate the faulty circuit
235-105-210
October 1999
Copyright © 1999
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