Description
These Transmit and Receive Balun Adaptors provide a low cost solution for connecting a balanced 120 ohm twisted pair interface to an unbalanced 75 ohm coax network. The Balun Adaptors provide isolation protection and impedance matching, enabling 75 ohm coaxial networks to interface with 120 ohm twisted pair equipment, bi-directionally, matching signal impedance and pulse shapes in accordance with the G.703 standard. Suitable for 2-8Mbit/s E1/T1 and E2/T2 data streams.

Specifications
75 ohm Connections	Dual BNC (Male or Female), 1.6/5.6 or Type43
120 ohm Connections	Shielded RJ45
Transmission Line	CCITT G.703 or G.704 (transparent)
Speed	2.048Mbit/s (E1) and 8.448Mbit/s (E2)
Cross Talk	Better than -60dB at 1 to 10Mhz
Insertion Loss	Less than 0.35dB
Return Loss	Better than 20dB
Earthing - Grounding	Tx and Rx Ring to RJ45 Shield, via 0.1µF capacitor
Dimensions	20.0 W x 51 D x 42.6mm H
Wiring Scheme	1 - Tx Tip, 2 - Tx Ring, 4 - Rx Tip, 5 - Rx Ring
Materials	Case - ABS UL-94V0 Fire retardant Plastic
Operating Temperature	0° to 50° C
Power Requirements	None