Ext Alarm - Furuno FM-8800D Service Manual

2. EXT ALARM

This is to set up the external alarm, which is in relation with a category of received DSC
message. In Distress (DIS) or Urgency (URG) category, this is always set to ON. In
ROUTINE or SAFETY categories, ON/OFF set up can be made. All factory settings are
ON. To stop alarm output:
- DIS/URG: Until you press [CANCEL] key.
- SAFETY: Automatically stops 2 minutes after receiving, or until [CANCEL] key is
pressed.
- ROUTINE: Automatically stops 2 minutes after receiving, or until [CANCEL] key
is pressed.
Procedure
1. Select [MENU] -> ALARM and press [ENT] key.
2. Select EXT ALARM. Set up the category to output EXT ALRM and press [ENT]
key.
* SETUP MENU *
ALARM
AUTO ACK
ERASE LOG
MEMORY CHANNEL
MESSAGE FILE ENTRY
EXT ALM output;
Normal Open
Maximum rating of DSM 10 C
- I
F
- V
RM
EXT ALM output;
Normal Close
（ ）
2006/6 and after
EXT ALM Cont.
[ENT]
Q2
2SK3022
EXT ALM Cont.
C31
0.01u
(Forward current): 1 A
(Reverse tolerance pressure): 200 V
U44
PS7241 1B F3
3
1
2
4
C31
0.01u
Fig. 4.3.1 EXT ALM System Diagram
* ALARM MENU *
POS. OLDER
4H
EXT ALARM
CPU
(05P0773)
CR2
DSM10C
EXT ALM_N
J2-1
11
0V
J2-2
12
C29
0.01u
Maximum rating of 2SK3022
- VDSS (Drain source voltage): 60 VDC
- VGSS (Gate source voltage): +20 VDC
- ID (Drain current): +5 A (DC), +10 A (Pulse)
- Pd (Maximum power loss): 10 W
CPU
(05P0773)
CR2
DSM10C
EXT ALM_H
J2-1
11
EXT ALM_C
J2-2
12
C29
0.01u
4-13
4.3 System Setting: User Menu
[ENT]
DIS/URG:ON
SAFETY: OFF
ROUTINE: ON
Junction box
(IF-8810)
TB-6
EXT ALM
TB-7
Recommendation:
Less than 0.5 A for loading EXT ALM
Junction box
(IF-8810)
TB-6
EXT ALM
TB-7
Maximum rating; 50V/80mA
[ENT]
ON
OFF