4E1 PDH Multiplexer

Mini 4E1 PDH Multiplexer

Product Function：
This OP-4E1 PDH (optical modem) transfers 4 E1 signal over fiber.

Product Character:
(1)High integrate design, work stabile, very low failure rate.
(2)E1 port use digital clock resume circuit and digital phase-lock circuit.
(3) Voltage can select -48V/220V, provide over-voltage and over-current protection, have high electromagnetism shield capability.
(4) Jitter tolerance much better than GB.
(5)Monitor remote equipment through fiber inter-band channel, display remote status on panel LED.
(6)Provide function of 4 E1 remote loop, and 1 interface of phone.
(7)Network manager interface use SNMP.
(8)Two types:Standalone, desktop, 19inch;Card,usually be inserted in our rack 19 inch.

Optical interface parameter:
optical wavelength: 850,1310,1550nm (optional).
optical interface: SC,FC,ST(optional).
transceiver module: > -6dBm
optical receiver sensitivity: <-36(BER<10)
receive range: >-30dB
transmission coding: 4B5B
transmission distance: multi-mode 2 Km, single-mode 40 Km, single-mode 80 Km,single-mode 120 Km.

E1 interface parameter:
Interface Rate: 2.048Mbps+-50ppm
Coding: HDB3
Interface standard: ITU-T G.703
interface Impedance : 75Ω(unbalance) and 120Ω(balance).
interface character: support rack (19 inch, 6u high) up to 24 directions.
interface: BNC,RJ45
Jitter tolerance : according with G.742 and G.823.

Typical Application: