Product Overview
V.35 fiber optic Modem is a kind of communication equipment to transmit one channel of V.35 data over a pair of fibers. It uses ASIC chip, adopts modular structure inside, integrates the functions of coding, decoding, information insertion, and alarm switchover,. Therefore its circuit is simple, structure is compact and power consumption is low. It is widely used in the occasions that require high reliability and complete auxiliary functions. Features
?Providing one optical port, supporting point-to-point connection in pairs or connection to E1 fiber optic Modem;
?Providing _disibledevent= 1-32), adjustable
?Providing three timing modes: mater timing, tracing V.35 port, and tracing optical port
?Supporting automatic tracing function of remote timeslot bandwidth
?Providing auto-sensation between the receive clock and data phase at V.35 port
?Supporting multiple loopback functions and bit error of internal link test function, facilitating engineering commissioning
?Providing the remote electrical outage detection function, which can tell whether it is fiber cut or the remote electrical outage
?Rich panel display enables the user easy to identify the fault
Typical Applications
Two V.35 fiber optic modems are connected through fibers, which connects two routers with V.35 interface.
Figure 1-3-1 Typical Application (1)
A V.35 fiber optic Modem is connected with a E1 fiber optic Modem through fibers. The router connected with the V.35 fiber optic Modem has a V.35 interface, and the router connected with the E1 fiber optic Modem has E1 interface.
Figure 1-3-2 Typical Application (2)
Based on application (2), transmit transparently the E1 circuit to the equipment room of the user through SDH/PDH network, and connect with a V.35-to-E1 converter, and then to a router.
Figure 1-3-3 Typical Application (3)
Technical Parameters
Technical Parameters of Optical Interface
1)Optical link rate: 4.096 Mb/s
2)Wavelength: 1310 nm (standard) / 1550 nm (optional)
3)Transmission distance: 40 km (standard) / 60 km, 80 km, 120 km (optional)
4)Optical output power: > -12 dBm
5)Receiving sensitivity: superior to ?36 dBm (BER ?10-10)
6)Optical connector: FC (standard)/SC (optional)
7)Optical port: dual-fiber (standard) / single fiber (optional)
Technical Parameters of V.35 Interface
1)Rate: N ?64 Kb/s (N = 1-32)
2)Interface characteristics: In compliance with V.35 standard
3)Connector: DB25 socket
4)Working in DTE or DCE mode (set by selecting the clock of equipment)
5)auto-sensation between the receive clock and data phase
6)Phase of output data can be selected through the DIP switch RXC_MOD
7)Interface level:
- Data and clock signals are differential signals, V.35 or V.11 level optional, and V.35 level by default
- Control signal is non-balanced signal, with electrical characteristics of V.28 Note: The selection of electrical characteristics V.35 level and V.11 level of data and clock signals are made by the jumper J19 (beside SP322) inside the equipment. The default value is V.35 level. If it is required to set to V.11 level, please open the chassis and make selection by yourself. Please do not change the default positions of other jumpers.
Technical Parameters of Power
1)Two optional power supplies: AC and DC
2)AC 220V (175V -265V)
3)DC -48V (-36V -- -72V)
4)Power consumption ( 5W )