50 Foot Black BJC 3G/6G HD SDI Cable (Belden 1694A), BNC to BNC: Home Audio & Theater

Description

Serial Digital Interface video signals are now among the most demanding signal types run through coaxial cables.  Today's SDI may run at 3G (the highest rate for which there is an official spec) or even 6G (supported on many current devices, though without an official spec), requiring a cable with superb bandwidth, tight impedance tolerance and well-controlled return loss.  For any sort of SDI signal ranging from standard-def up to 6G, we offer this cable, assembled in our Seattle workshop from Belden's excellent 1694A cable and Canare BNC connectors.  The cable stock is Belden 1694A, a standby of the broadcast industry.  It has an 18 AWG center conductor, a foam HDPE dielectric, and a 95% tinned copper braid on top of Belden Duofoil, for 100% shield coverage and low shield resistance.  A lot of planning and detail work goes into this cable; we've discussed at length with Belden's engineering staff the difficulties of keeping periodicity -- and its resultant return-loss spikes -- out of cable manufacture, for example, and managing production of a cable like this is a demanding bit of business.  The result is a highly consistent, highly reliable cable that regularly beats its specifications, suitable for any SDI application up to 6G.  The cable is rated CMR for in-wall installation, and has similar texture to typical RG-6 CATV coax -- if you need something more flexible and "drapey," take a look at our Belden 1505F cables or, for short runs, 1855A.   As frequencies rise, wavelengths shorten -- a 6 GHz signal has a wavelength, in air, of just 5 cm! -- and that makes a high-quality connector an important part of any SDI cable assembly because the cable/connector interface and the mating portions of the connector are long enough to play a major role in return loss; they need to be as consistent in impedance as possible.  We use Canare 3-piece crimp BNCs on this cable; Canare's consistency of manufacture, and the stability of the connector once assembled, are top-notch and the dimensional fit of the Canare plug to this cable is perfect, ensuring as little impedance change as possible both into and out of the connector assembly.     Unlike many SDI cable vendors, Blue Jeans Cable does not import SDI assemblies, or job them out to someone else -- we assemble all of our SDI cables in-house, in our assembly shop in Seattle, Washington, where we've been doing this work for over 15 years, handling millions of feet of cable.  Our employees average well over five years of experience in video cable assembly, and we use the best stripping and crimping gear available -- precision programmable strippers and 3-ton pneumatic presses from Schleuniger, in Switzerland -- to do this work.  The result is a quality product, expertly assembled by experienced workers from the best available components: solid, reliable and consistent.

Product Overview