DIGITIZE DGM-32/64, Руководство по установке и обслуживанию

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700135-0000 Rev. O 39
5 THEORY OF OPERATION
5.1 GENERAL
When the front panel door is closed and the key lock is engaged, you can view the LCD
display and LED indicators through the Plexiglas window in the door. During normal
operation, the DGM displays the current time. In the event of an alarm the DGM displays,
in order, each zone number, its status and any fault conditions. All changes in status are
reported to the head end equipment without intervention by an operator at the DGM.
ALARM
TROUBLE
AC POWER
To obtain access to the internal keypad, use the key lock to open the door of the panel
enclosure. As soon as the door is open, the tamper switch activates an audible alarm. A
corresponding Tamper message is displayed on the LCD, and this change in status is
reported to the SYSTEM 3505 PRISM LX. Press CLR/SIL to clear the Tamper. You now
have limited access to the panel, and by entering your passnumber you will be granted
complete access to all functions (refer to
Section 4 Programming.)
ALARM
TROUBLE
AC POWER
DC POWER
COMM
(XMIT)
RESET
1 2 3
READ
4 5 6 IN/
OUT
7 8 9
CLR/
SIL
TGGL
0
FUNC ENTER
RESET
Regardless of whether or not you have passnumber access you have the ability to view a
specific zone without waiting for the LCD to display it in sequence. Enter the zone number
from the panel keyboard and press READ. The zone of your choice appears in the LCD
with its current status. Press CLR/SIL, CLR/SIL to display the current RTS (Ready to