SECTION I
Theory of Operation
Page 1.4
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1.8 Multi-Level Passwords
A password is required to access and make use of the UPS Maintenance
Menu, described in Section 3.6.3. This menu, with five subsections, makes
possible the performance of a variety of maintenance functions including transfer
and retransfer to bypass, password changes and adjustment of time and date.
All passwords may be changed by a person who already knows either the
password in question or a higher level password.
Passwords consist of a minimum of 4 characters and a maximum of 9
characters. The numerals 0 through 9 and letters A through F may be employed.
The first character of the password indicates the privilege level of the
password. The higher the privilege level, the more capabilities that password can
access.
Privilege level 0: No password. Used for the front panel display of
voltages, currents, etc. only. Does not permit any
menus to be accessed.
Privilege level 1: Reserved for future development.
Privilege level 2: Remote operator password. Used to monitor the UPS,
but not to affect transfers and retransfers.
Privilege level 3: Reserved for future development.
Privilege level 4: Operator password. Monitors the UPS as well as
allowing transfers, retransfers, transfer enables,
retransfer enables, reset faults, etc.
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