Installation manual

SAFEPATH Manual Sheet 12 of 78
Rev. C April 1999
OPERATION
This chapter describes the operating characteristics of the SAFEPATH panel. Included is information about the following
SAFEPATH panel features:
•
Operator's Console
•
Message Memory
•
Input and Output Options
•
Message Files
•
Output Channels
•
File Priority
•
Playing Files
•
System Pause
•
Supervision
•
Back-up Battery Requirements
•
Password Protection
•
Memory Retention Battery
Operator's Console
An operator's console, which allows for manual override of the automatic message playing, is provided. The operator's console
includes a microphone, an "ACKNOWLEDGE" push-button, “RESET” push-button, a "MANUAL/AUTOMATIC " switch, “ALL-CALL”
switch, four zone disarrangement switches, and "NORMAL" and "TROUBLE" indicators. The operator's console is accessed by
opening the enclosure door. See Figure 3.
DX-100 Message Memory
The DX-100 has the ability to store up to eight minutes of audio. The audio is stored digitally on up to eight memory integrated
circuit ("I.C.") chips. Each memory I.C. can store up to one minute of audio messages. See Figure 5 for the socket locations S63
and S70 on the DX-100 printed circuit board into which the eight memory I.C.'s U63 thru U70 are inserted.
The eight memory I.C.'s which store audio data are U63 thru U70. These memory I.C.'s are commonly referred to as erasable
programmable read only memories ("EPROM's", see EPROM definition in glossary). The number of memory I.C.'s in the DX-100
will vary between one and eight, depending on the number and length of audio messages recorded.
EPROM's are erased by exposure to ultraviolet ("UV") light. UV light is present in light sources such as sunlight and fluorescent
lamps. An EPROM must be protected against accidental or premature erasure by covering its window (see Figure 2) with a UV
opaque label.
Each EPROM supplied with this module has its window covered with a UV opaque label. An EPROM's UV opaque label is to be
removed only
when erasing the EPROM. After an EPROM has been erased, its window must be recovered with a new UV opaque
label.
WARNING: EACH EPROM MUST HAVE A UV OPAQUE LABEL PLACED IN PROPER POSITION AS SHOWN IN
FIGURE 2. IF THE LABEL IS WORN, TORN, OR OTHERWISE DAMAGED IN ANY WAY THAT WOULD
ALLOW UV LIGHT TO PASS THROUGH, STORED MESSAGES CAN BE ERASED. IF STORED
MESSAGES ARE ERASED, THEY WILL NOT BE DELIVERED WHEN AND WHERE REQUIRED, AND
COULD RESULT IN PROPERTY DAMAGE AND SERIOUS INJURY OR DEATH TO YOU AND/OR OTHERS.
Figure 2.
Top View of Message Memory EPROM