Wiring; Figure 3-3 Optical Fiber Cable Wiring - Hitachi SD.LINK User Manual

3 MOUNTING AND WIRING

3.4 Wiring

(1) Primary ring (PR) wiring
Connect the TX and RX terminals of each SD.LINK module and those of the adjoining
SD.LINK module with optical fiber cables to form a ring as shown in Figure 3-3.
Communications data will transit from TX to RX in the arrow direction.
(2) Secondary ring (SR) wiring
Connect the TX and RX terminals of each SD.LINK module and those of the adjoining
SD.LINK module the same way as in primary (PR) wiring, except that the communications
data transmits in the opposite direction (in the direction opposite to the arrow mark for PR
wiring).
LQE530
SD.LINK
TX
PR
RX
ERR
TX
SR
RX
ERR
PR- RX
SR- TX
SR- RX
PR- TX
Optical fiber cable wiring is an error-prone task. Mark each optical fiber cable
with the wire gauge before connecting it.
MODU
No.
U
CPL
No.
L

Figure 3-3 Optical Fiber Cable Wiring

LQE530
SD.LINK
MODU
TX
No.
PR
RX
U
ERR
CPL
TX
No.
SR
RX
ERR
L
PR- RX
SR- TX
SR- RX
PR- TX
NOTICE
3-6
LQE530
SD.LINK
MODU
TX
No.
PR RX
U
ERR
CPL
TX
No.
SR
RX
ERR
L
PR- RX
SR- TX
SR- RX
PR- TX