User manual

Beijing Raisecom Science & Technology Co., Ltd. http://www.raisecom.com
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Request to Send — RTS I 4
Clear to Send — CTS O 5
Data Set Ready — DSR O 6
Data Carrier Detect — DCD O 8
Data Terminal Ready — DTR I 20
I --- input; O --- output.
3.1.3 Fiber Optic Interface
For the dual-strand models, the fiber optic interface is DSC/PC. TX stands for optical signal
output (transmit); RX stands for optical signal input (receive).
3.2 Dip-switch SW1 Setup on the Bottom Panel
The dip-switch SW1 on the bottom panel must be set up before use.
1
st
~ 5
th
bit: V.35 interface bandwidth setup
6
th
bit: bandwidth master control/slave control setup
7
th
~ 8
th
bit: timing resource option
3.2.1 The 1
st
~ 5
th
Bit: V.35 Interface Bandwidth Setup
V.35 bit rate is N*64kbps (N=1~31) when working at fractional E1 mode; V.35 bit rate is
2048kbps when working at transparent E1 mode. These 5 bits of the dip-switch are actually
representing the binary code of the N value. When N is configured to 0, RC802-30B-FV35 is
working at transparent E1 mode.
1
st
bit 2
nd
bit 3
rd
bit 4
th
bit 5
th
bit Bandwidth (bit/s)
0 0 0 0 0 2048K (transparent E1 mode)
0 0 0 0 1 1×64K=64K (minimum bandwidth)
0 0 0 1 0 2×64K=128K
0 0 0 1 1 3×64K=192K
1 2 3 4 5 6 7 8
ON
OF
Back Panel Interface
SW1 SW2
Bottom Panel V.35 Interface
Fiber Optical Interface