Optical modems 16E1+4FE+2RS232 PDH fiber optical multiplexer

overview

This device has the console control, provides the 1+1 fiber back-up protection ,point to point optical transmission, LCD display , on the basic of our company development of the PDH optical transmission, use the special VLSI and the SNMP NMS.

The device provides 1-16*E1 interface, 1-4*10/100M Ethernet interface (Wire speed 100M) and 2 expansion interface. 4Channel Ethernet interface is switch interface, can support VLAN. 2 expansion interface can be used as the transmission channel of RS232/RS485/RS422 asynchronous data. It is very flexible. It has alarm function. The work is reliable, stable, and low power consumption, high integration, small size

Features

• Provides 16 E1 transparent transmission;
• With char 16*2 LCD display and SNMP agent inside
• Provide Console manage interface (RS232)
• Provide two fiber interface 1+1 protect(APS)function ,and ALS(Automatic Laser Shutdown/Reduction)function
• Ethernet package size support 1916 byte and 4 Ethernet port could be set separately, and ethernet bandwidth can be setting base on multiple of 32K
• Uses standard 2 wire telephone (non-telephone handles) set as engineering order-wire hotline(optional)
• Provide two fiber interfaces, one as master, the other as slave, insuring uninterrupted service transmission
• The rate of optical port is 155Mbps, transmission range can reach 25KM, 40KM, 60KM, 80KM or 120KM;
• E1 interface code is HDB3,E1 vibration characteristic conforms to ITU-T G.703,G.823 and G.742;
• Ethernet port supports full/half duplex, 10/100M auto-Nego;
• Ethernet port supports VLAN function and has 4 devision mode for user selection;
• Has complete alarm function and can monitor remote device status;
• Supports two Fiber Loop-back,and Four E1 loop-back mode,and manage device conveniently;
• user configurable main alarm and minor alarm, display in LCD and sound alarm at speaker;
• AC 220V, DC-48V, DC+24V can be optional
• DC-48V/DC+24V power supply polarity detection function, Polarity-Free

Techincal parameters

Fiber

Multi-mode Fiber
50/125um, 62.5/125um,
Maximum transmission distance: 5Km @ 62.5 / 125um single mode fiber,attenuation (3dbm/km)
Wave Length: 820nm
Transmitting power: -12dBm (Min) ~-9dBm (Max)
Receiver sensitivity: -28dBm (Min)
Link budget: 16dBm

Single-mode Fiber
8/125um, 9/125um
Maximum transmission distance: 40Km
Transmission distance: 40Km @ 9 / 125um single mode fiber, attenuation (0.35dbm/km)
Wave Length: 1310nm
Transmitting power: -9dBm (Min) ~-8dBm (Max)
Receiver sensitivity: -27dBm (Min)
Link budget: 18dBm

E1 Interface
Interface Standard: comply with protocol G.703;
Interface Rate: 2048Kbps±50ppm;
Interface Code: HDB3;
E1 Impedance: 75Ω (unbalance), 120Ω (balance);
Jitter tolerance: In accord with protocol G.742 and G.823
Allowed Attenuation: 0~6dBm

Ethernet interface (10/100M)
Interface rate: 10/100 Mbps, half/full duplex auto-negotiation
Interface Standard: Compatible with IEEE 802.3, IEEE 802.1Q (VLAN)
MAC Address Capability: 4096
Connector: RJ45, support Auto-MDIX

Working environment
Working temperature: -10°C ~ 50°C
Working Humidity: 5%~95 % (no condensation)
Storage temperature: -40°C ~ 80°C
Storage Humidity: 5%~95 % (no condensation)

Network application