USER MANUAL MODEL 460 SERIES G.703 Coax to Twisted Pair Adapter (Balun) Part# 07M460 SALES OFFICE Doc# 019021U Rev.
CONTENTS 1.0 1.1 1.2 Warranty Information ................................................................. 3 Service and Support ..................................................................... 3 CE Notice...................................................................................... 3 2.0 2.1 Product Description ................................................................... 4 RJ-45 Jack and Terminal Block Descriptions ............................... 5 3.0 Configuration ..............
1.0 WARRANTY INFORMATION Patton Electronics warrants all Model 460 components to be free from defects, and will—at our option—repair or replace the product should it fail within one year from the first date of shipment. This warranty is limited to defects in workmanship or materials, and does not cover customer damage, abuse or unauthorized modification. If this product fails or does not perform as warranted, your sole recourse shall be repair or replacement as described above.
2.0 PRODUCT DESCRIPTION The Patton Model 460 Series enables 75-ohm coax hardware to communicate with 120-ohm twisted-pair equipment. The Model 460 Series specifically address the ONP requirement that European PTTs offer 120ohm 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.
Figure 1. Model 460 functional diagram 2.1 RJ-45 JACK AND TERMINAL BLOCK DESCRIPTIONS Shielded RJ-45 Jack: • Pins 1 and 2 (see Figure 1) are the balanced inputs. The balanced signals are converted to an unbalanced signal on the center conductor of the TX Out coax connector. • The unbalanced signal from the RX In coax connector is converted to balanced signals on pins of the RJ-45. • The shield of the RX In connector may be connected to RJ-45 pin 6 by jumper JP2 (on).
3.0 CONFIGURATION Note If you have a Model 460-TBP, it does not require configuration; refer to section 4.0, “Installation” on page 8. The following section describes configuring the Model 460. The Model 460 Series are preset to work in most applications without additional configuration. The only parameter that is user-configurable is whether there is a shield connection between the 75-ohm coax and 120-ohm interfaces.
JP2 JP1 Figure 3. JP1 and JP2 locations for 460M 2. Using Figure 2 as a reference, remove the desired jumper(s) to break one or both shield connections. Note Do not lose the jumper(s). 3. Align the case halves and end inserts and snap the case halves back together.
4.0 INSTALLATION The sections on the next page describe installing the following: • Model 460 (see section 4.1, “Installing the Model 460” on page 8) • Model 460-TBP (see section 4.2, “Installing the Model 460-TBP” on page 8) Refer to the appropriate section to install your unit. 4.1 INSTALLING THE MODEL 460 Do the following: 1. Refer to the pin configuration below when assembling the cable that will connect to the RJ-45 jack. 2. Plug the modular cable connector into the RJ-45 jack.
RCV XMT Clamp screws (4 places) t RX In 000 9 774 : 00 Lot lun Mo r d sbu r e g ,M l 03 460F- aryla nd Ba TB P 3 121 :99 S/N Ou XMT RCV CPE TX Terminal block G.7 ithe Ga RC V XM T TX Out Pair 1 XMT Twisted-pair CPE RCV RCV Coax CPE XMT Pair 2 RX In Figure 4. Model 460-TBP terminal block interface wiring diagram 3. Connect one pair of wires to the two XMT (transmit) positions on the terminal block.
APPENDIX A SPECIFICATIONS A.1 TRANSMISSION LINE ITU/CCITT G.703 (unstructured) A.2 DATA RATE 2.048 Mbps maximum A.3 UNBALANCED COAXIAL CONNECTION • Dual coax female BNC connectors (RG 59 or 2002 coax) • Nominal line impedance: 75 ohms A.4 BALANCED TWISTED PAIR CONNECTION • Single 8-pin RJ-45 jack, shielded (two twisted-pair) • Nominal line impedance: 120 ohms • 4-position, removable terminal block A.5 POWER SUPPLY None required, passive device A.6 OPERATING TEMPERATURE 32–122°F (0–50°C) A.
Notes _________________________________________________________ _________________________________________________________ _________________________________________________________ _________________________________________________________ _________________________________________________________ _________________________________________________________ _________________________________________________________ _________________________________________________________ _________________________________________
Notes _________________________________________________________ _________________________________________________________ _________________________________________________________ _________________________________________________________ _________________________________________________________ _________________________________________________________ _________________________________________________________ _________________________________________________________ _________________________________________
