Harris Constellation, Installation & Maintenance

Page: 166 / 292

Constellation™ November 2003
10-6 Troubleshooting Guidelines
Figure 10-1: Constellation Radio alarm path
Receiver
As
se
mbly
HLM
M
odem
AC
U
M12 Unit
8
.. .
DS3
or
T
ransmit
te
r
As
se
mbly
Mode
m
T2 S
Y
NC LO
S
T1 LOCAL
CLK
TRIB O
U
TPU
T
F
A
IL
SY
NC LOS
S
M1
2 RX
CLK
*
DS
3 OUTPUT
FA
IL
*
CARRI
ER LOS
S
FE
C
L
O
CK
SY
NTH LOCK A
LM
*
AG
C
S
Y
NTH L
O
CK
AL
M
*
O
U
TP
UT POWE
R LOW
NO
IF INP
U
T
TX
ENCODE
R
TX L
E
VE
L
AC
U
HLM
1
STB
Y
M12 Unit
8
.. .
DS3
or
1
STB
Y
T
ransmit
te
r
As
se
mbly
Mode
m
HLM
Receiver
A
ssembly
HLM
Modem
TX T
O
M
O
DE
M
A
L
M
M12
T
X
CLK
TX T
O
HL
M
ALM
*
T
hi
s
alar
m
nor
mal
ly
si
gni
fie
s a
fai
lur
e i
n the
ca
rd
.
F
irs
t, c
hec
k t
o s
ee i
f the
faul
t l
ies
in
th
e c
ar
d. If
not, t
hen
che
ck
the
ca
rd
to th
e l
ef
t
of
the d
iag
ra
m.
LEG
E
ND
155
or
155
or