Document No: LT0255 F3200/NDU AS4428.1 Installation Manual
Installation & Wiring
Issue 1.04 30 June 2004 Page 5-29
DISPLAY EXTENDER BOARD (CONTINUED)
Trial Evac
When the Trial Evac input is activated, the Bell relay is energised and the BEL logic token is
set true regardless of any silence alarms or bells isolate condition.
Silence Alarms
When the silence alarms input is activated, the Bell relay is de-energised and the BEL logic
token is set false unless trial evac is asserted.
Brigade Test/Brigade Isolate
These conditions share the same input and when true, result in an “abnormal” system state
(but defect is not signalled) that can be recalled with a system fault recall.
Lamp Test
This input can be used to test all the LEDs including the front panel LEDs, the LEDs on the
New Zealand Display Extender board, the index lamp and any 16 zone LED display boards.
FIG 5.11.1
NEW ZEALAND EXTENDER TERMINATION BOARD
I/O 01
I/O 02
I/O 03
I/O 04
I/O 05
I/O 06
I/O 07
SPARE-
NC DEF-
NC FIRE-
FIRE-
DEFECT-
NORMAL-
LAMP-
LAMP+
I/O 08
I/O 16
I/O 15
I/O 14
I/O 13
I/O 12
I/O 11
I/O 10
SPKLR OP-
TRIAL EVAC-
SIL ALMS-
EXT DEF-
LAMP TEST-
BRIG ISOL/TEST-
BSR-
EVAC DEF-
I/O 09
PA0483
0V
+V
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