The Patton Model 460 is a miniature G.703 balun that allows 75 ohm coax hardware to communicate with 120 ohm twisted pair equipment. The Model 460 specifically addresses the ONP requirement that European PTTs offer 120 ohm twisted pair terminations to their customers. Some PTTs and private carriers are standardized on 75 ohm coax, or have customers whose CPE has only 75 ohm coax connections. The Model 460 presents a ready solution to this termination mismatch. Supporting E1 data rates to 2.048 Mbps, the Model 460 receives 75 ohm signals and converts them to 120 ohm for transmission over a network or reception by a CPE. The signals output by the Model 460 are scaled to match the pulse shape requirements specified by the CCITT G.703 standard. The Model 460 can perform 120 ohm to 75 ohm signal conversion as well, giving the device a dual role.

 

Transmission Line: CCITT G.703 (unstructured)
Data Rate: 2.048 Mbps
75 Ohm Connection: Dual coax BNC connectors, male or female (RG 59 or 2002 coax)
120 Ohm Connection: Shielded RJ-45 jack (internal terminal block included)
Power Supply: none required
Link-to-Data Isolation: 500 volts AC/DC
Operating Temperature: 0? to 50?C (32? to 122?F)
Dimensions: 2.7" (6.86 cm) L x 1.7" (4.32 cm) W x 0.8? (2.03 cm) D