+44 20 8895 6455
info@webbinfra.com

Balun Adapter

Webb’s dual balun adapter is a miniature G.703 balun that allows 75 ohm coax hardware to communicate with 120 ohm twisted pair equipment.
It supports E1data rates to 2.048 Mbps and E2 to 8.448 Mbps. The dual balun receives 75 ohm signals and converts them to 120 ohm for transmission over a network. The signals output by dual balun are scaled to match the pulse shape requirements specified by the CCITT G.703 standard.

Features

No AC power or batteries required
Link to data isolation: 250V Bi-directional signal conversion
Operating temperature: 0°C to 75°C
Compact design

Specifications

2-8 Mbit/s speed version for E1 (T1) data streams

Impedance: 75 ohm to 120 ohm/100 ohm
Insertion loss: Max. 0.2dB (2Mbps); Max. 0.3dB(8Mbps)
Return loss: -29dB(2Mpbs); -21dB(8Mpbs)
Cross talk: better than -80dB from 0.1 to 12MHz between any 2 baluns mounted distance up to 15mm

2-8-34 Mbit/s speed version for E2 (T2) data streams

Impedance: 75 ohm to 120 ohm/100 ohm
Insertion loss: Max. 0.3dB (8Mbps); Max. 0.9dB from 0.2-70MHz
Return loss: -21B(8Mbs); -15dB from 1 to 70 MHz
Cross talk: better than -60dB from 1MHz to 70MHz between any 2 baluns mounted distance up to 15mm

34 to 155 Mbit/s speed version for E3 (T3) and higher data streams

Impedance: 75 ohm to 120 ohm/100 ohm
Insertion loss: Max. 0.8dB from 860 KHz to 52 MHZ Max. 1.5dB from 50KHz to 240 MHz
Return loss: Max. 15dB from 1MHz to 240 MHz
Cross talk: -80dB from 1MHz to 240MH