Description
- 25 foot Multi-coaxial VGA cable
- Assembled in USA (in our shop in Seattle) from US-manufactured cable stock, imported connectors
- Coaxial cable geometry provides stable impedance, resulting in clean image (no ringing or ghosting)
- CL2 rated for in-wall installation
- Cable contains five miniature coaxes for R,G,B,H and V signals, each with a combination braid/foil shield.
Blue Jeans Cable VGA Cable, 25 feet
VGA signals are a type of RGBHV video signal, carrying Red, Green, Blue, and Horizontal and Vertical Sync on five separate 75-ohm impedance lines. At short distances, VGA monitor cables that are made of paired conductors, or of shielded conductors of no particular impedance, work fine; but as the distance between graphics card and monitor becomes larger, the characteristic impedance of the cable run between them becomes increasingly important. Inferior cable quality in these runs can cause ringing or ghosting in computer monitor images, due to signal reflection caused by impedance transitions within the cable run and at the terminations.
Coaxial Cable Geometry for High-Performance Impedance Stability
When video signals are being run, as they conventionally are in VGA interfaces, at 75 ohm input and output impedance, the best way to deliver them flawlessly is through 75-ohm coaxial cable, so that the output, transmission line, and input impedances are all matched. To that end, our VGA cable contains five tiny 75-ohm coaxial cables, each with a full-coverage foil shield and a high-coverage tinned copper braid, to maintain that impedance throughout the run, minimizing signal reflections.
Belden and Blue Jeans Cable -- Quality Manufacture
The cable stock is manufactured in the USA by Belden, the world leader in communications cabling, and is terminated with high-quality imported VGA connectors and backshells in Blue Jeans Cable's Seattle cable assembly shop.