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2.2.13.3 Setup of Communication Circuit
The GRL100 is provided with one set of transmit and receive signal terminals for two-terminal
application models and two sets of signal terminals for three-terminal application models.
In case of two-terminal applications, the communication circuit is set as shown in Figure
2.2.13.3. In the figure, TX and RX are the transmit and receive signal terminals. CK is the
receive terminal for the multiplexer clock signal and is used when the interface supports CCITT
G703-1.2.2, 1.2.3 and X.21(RS530).
Terminal A
GRL100
TX1
CH1
RX1
Terminal A
GRL100
TX1
CH1
RX1
Terminal A
GRL100
12
25
TX1
11
24
10
23
CH1
RX1
9
22
8
21
CK1
7
20
Shield
13
ground
Terminal A
GRL100
12
25
TX1
11
24
10
23
CH1
RX1
9
22
8
21
CK1
7
20
Shield
13
ground
6
19
TX2
5
18
4
CH2
17
RX2
3
16
2
15
CK2
1
14
(Electrical Interface in accordance with CCITT-G703)
Figure 2.2.13.3 Communication Circuit Setup in Two-terminal Application
(a) Direct Link Using Optical Fiber
O/E
M
U
X
MUX: Multiplexer
O/E: Optical interface unit
(b) Link via Multiplexer (Optical Interface)
P
N
M
P
U
N
X
P
N
(c) Link via Multiplexer (Electrical Interface
in accordance with CCITT-G703)
P
N
M
P
U
N
X
P
N
P
N
M
P
U
X
N
P
N
(d) Link via Multiplexer for Dual communication
32
6 F 2 S 0 8 5 0
Terminal B
GRL100
TX1
CH1
RX1
Terminal B
GRL100
TX1
CH1
M
O/E
RX1
U
X
Terminal B
GRL100
12
P
25
TX1
11
N
24
10
M
P
23
U
CH1
RX1
9
N
X
22
8
P
21
CK1
7
N
20
Shield
13
ground
Terminal B
GRL100
12
P
25
TX1
11
N
24
10
M
P
23
U
CH1
RX1
9
N
X
22
8
P
21
CK1
7
N
20
Shield
13
ground
6
P
19
TX2
5
N
18
M
4
P
U
17
CH2
RX2
3
X
N
16
2
P
15
CK2
1
N
14
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