User manual

Raisecom Technology Co., Ltd
16
synchronization WAN interface is passing when this device is connected and its RX CLK
is Positive.
RX CLK is Positive: Data will be sent to RD signal during RX CLK falling edge.
RX CLK
RD
RX CLK is Reverse: Data will be sent to RD signal during RX CLK rising edge.
RX CLK
RD
Notice: The relationship of TX CLK and TD phase of this series device is auto-adjusted, so
users need not to configure it.
5. The 6th, 7
th
and 8
th
bit: Loop back dip-switch (default OFF)
SW5-6 SW5-7
ON Dual-direction
loopback enable
Local loopback
OFF Dual-direction
loopback disable
Remote loopback
Local loop back: it actually includes local two direction loop back. Those are internal loop
back on V.35 interface and external loop back on fiber interface, as above figure.
To perform local loop back test please set SW5-6 and SW5-7 as ON. The interface inquiry
result of local and remote router is loop back if the fiber and V.35 cable is good.
Remote loop back: it actually includes remote two direction loop back. Local device’s fiber
interface loop back toward local device and its V.35 interface loop back toward DTE
equipment, as above figure.
6. The 8
th
bit: Reserved (default OFF)
DTE or Error code
e
q
ui
p
men
t
Local
(Master)
Remote
(Slave)
Fiber V.35
DTE or Error code
e
q
ui
p
ment
仪
DTE or Error code
e
q
ui
p
men
t
Local
(Master)
Remote
(Slave)
Fiber V.35
DTE or Error code
e
q
ui
p
men
t