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The Patton Model 465RC TeleMatch G.703 rack mount balun panel lets you
match the connectors, impedance and signal characteristics of up to 16
dual coax 1.6/5.6 connections (75-ohm) with up to 16 twisted-pair
connections (120 ohm).
The Model 465 has the 1.6/5.6 coax connectors used extensively in
telephone exchange sites. The balun has two interfaces, so both the TX and
RX coax signals can be carried over a single length of twisted-pair
cabling (which is much less costly than any kind of coaxial cable) (see
diagrams below).
Operating in compliance with the CCITT G.703 specification, the Model
465RC occupies only 2U (3.5 in./8.9 cm) of vertical rack space in a 19-in.
(48.3-cm) rack—allowing for efficient multiport matching. What's more, the
Model 465RC is modular, meaning that each balun can be added separately.
Purchase an entire panel fully populated with 16 balun modules (Model
465RC/16/F). Or purchase the chassis separately (Model 465R/16) and add
balun modules (Model 465RC/F) as you need them!
On individual twisted pair ports, shield-to-pin and shield-to-ground
connections are strap selectable. So you are not locked into the same
configuration for every balun in the panel. If you need to do multiple
75-ohm to 120-ohm conversions, the Model 465RC is definitely the way to
go! |
