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APPENDIX B: BELL-BOX CONNECTIONS
The terminal connections for various bell-box models are shown below.
L
y
n
e t
k c
L
d t
- .
1
0 2
L
E
A
c
o c
d r
T
r e
m
n i
s l a
B
E
B
l l e
B
x o
T
r e
m
n i
s l a
H
O
l E
m
e d
e n
-
R
a
i p
r e
3
0 0
2 0
. 0
A
c
o c
d r
T
r e
m
n i
s l a
B
E
B
l l e
B
x o
T
r e
m
n i
s l a
+
C
Q
R
e S
u c
i r
y t
-
S
g i
m
, a
A
c
o c
d r
T
r e
m
n i
s l a
B
E
H
O
B
l l e
B
x o
T
r e
m
n i
s l a
+
V
V
e
n
c t
o r
t f
e S
u c
i r
y t
-
V
A
c
o c
d r
T
r e
m
n i
s l a
B
E
H
O
B
l l e
B
x o
T
r e
m
n i
s l a
+
V
S
T
l F
s a
g h
a u
d r
-
t X
a r
A
c
o c
d r
T
r e
m
n i
s l a
B
E
S
U
B
l l e
B
x o
T
r e
m
n i
s l a
S
T
C
&
K
-
A
i t c
e v
G
a u
d r
A
c
o c
d r
T
r e
m
n i
s l a
B
E
2 1
B
l l e
B
x o
T
r e
m
n i
s l a
S
T
Note: Where two connections are specified for the bell box connection a 0Ω
link should be made between the two terminals on the bell box PCB.
D
1 /
0 2
L
e
o x
. n
L
L
+
B
E
L
L
-
L
D
+
T
R
G
, 0
4
0 0
, 0
5
0 0
, 0
6
0 0
; 0
P
i r
L
L
+
B
E
L
L
-
H
-
R
C
e
q
u
r e
, a
C
e
q
e u
a r
l P
L
L
+
B
E
L
L
-
L
D
O
F
F
S
R I
E
N
E
T
R
G I
s i
o i
, n
C
a l
s s
c i
a
n
d
S
i p
t i r
L
L
+
B
E
L
L
-
L
D
O
F
F
, E
T
R
G I
-
B
+
V
E
L
L
+
B
E
L
L
-
P
P
L
Y
, +
T
R
G I
G
E
R
R
O
B
E
+
L
L
+
B
E
L
L
-
V
, +
S
-
R
B
+
B
E
L
L
B
E
L
L
T
A
M
P
-
T
A
M
H
O
L
D
-
T
A
M
m
a
0 1
, 0
0 2
, 0
0 3
, 0
0 4
, 0
B
E
L
L
B
E
L
L
T
A
M
P
-
T
A
M
-
H
R
T
N
s u
a
n
d
U
i t l
m
. a
B
E
L
L
B
E
L
L
T
A
M
P
-
T
A
M
H
O
L
D
O
F
F
A
T /
R
-
V
E
S
G I
.
B
E
L
L
B
E
L
L
T
A
M
P
-
T
A
M
H
O
L
D
O
F
F
R
T
N
-
V
E
B
E
L
L
B
E
L
L
T
A
M
P
-
T
A
M
T
A
M
P
O
U
T
S
U
P
P
B
E
L
L
B
E
L
L
T
A
M
P
-
T
A
M
2 1
V
, -
T
A
M
T
A
M
4 2
(
g i r
) t h
e l (
) t f
30
S
T
R
B
P
-
R
P
R
S
T
R
B
0 5
, 0
0 6
; 0
t S
r a
g i l
t h
S
T
R
B
P
-
R
-
S
T
S
T
R
B
P
-
R
E
T
S
T
R
O
B
E
T
R
G I
S
T
R
B
P
-
R
S
T
B
-
S
T
R
B
P
-
R
L
Y
-
S
T
R
O
B
-
S
T
R
B
P
-
R
4 2
S
T
B
-
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