Honeywell Galaxy 3-48C Installation Instruction
Galaxy 3 Series Installation Manual
2-4
PCB Layout
PCB Layout
Figure 2-4. PCB Layout
LID
T AMP
+12V
+12V
+12V
+12V
1
2
3
4
2
AU
X
T
AMP
G N D
RX
TX
B2 A2
A1
B1
+12V
PHONE
LINE
A
B
A
B
AC
MICR
O
PR
OCESSOR
T
elecom
S
o
cke
t
16 on-board z
ones
Exter
nal
loudspeak
er
Leads f
or
lid tamper
micros
witch
RS232 P
or
t
J
umper Lead
for off-w
all
tamper s
witch
RS485
line 1
RS485 line 2
(3-144/3-520 only)
T
elecom
Connect
Batter
y
ter
minals
Expansion card
interf
ace
Hor
n output
volume control
RIO 0
13
RIO 1
GND
GND
+12V
CTS
RT
S
LED1(f
or T
elecoms)
LED2 (f
or RS232)
LK5
LK3
+12V
4
14.5
+BA
T
-BA
T
F1
F2
BA T
BELL
F4
A
UX1
A
UX2 (3-144/3-520 only)
FLASH
SRAM
SPI
P
ro
gra
m
Header
OFF WALL
T AMPER
BA
TTER
Y
ST
AR
T UP
1
2
3
4
5
6
7
8
SW3
RIO
SWITCH
Engineer soc
k
et
(RS485 Line1)
Engineer soc
k
et
(RS485 Line 2)
NO
TE:
Fuse A
UX1 controls
RS485 line 1, RIO 0 (z
ones 1-8)
Fuse A
UX2 controls
RS485 line 2, RIO 1 (z
ones 1-8)
RS232 P
or
t soc
k
et
Memor
y
bac
kup
batter
y
Pull-up s
witches
Rela
y
Output
N/O
C
N/C
ONON
NO
TE:
Zones 1-8 (RIO 0 line 1)
Zones 1-8 (RIO 1 line 1 (s
witch SW3-8 OFF))
OR
Zones 1-8 (RIO 1 line 0 (s
witch SW3-8 ON))
1
2
0V
3
4
0V
RIO 0
5
6
0V
7
8
0V
1
2
0V
3
4
0V
RIO 1
5
6
0V
7
8
0V
F3
3-144/3-520 only