The Patton Model 463M is a miniature G.703 balun that allows 75-ohm coax hardware to communicate with 120-ohm twisted-pair equipment.
The Model 463 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 463 presents a ready solution to this termination mismatch. Supporting E1 data rates to 34 Mbps, the Model 463 receives 75-ohm signals and converts them to 120-ohm for transmission over a network or reception by a CPE (see diagram below). The signals output by the Model 463 are scaled to match the pulse shape requirements specified by the CCITT G.703 standard.
Transmission Line: CCITT G.703 (unstructured)
Data Rate: 34 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)
