PAM modes • G.SHDSL devices use two parameters for line configuration: PAM and BASE RATE. While  G.SHDSL Economy and Etherlink II modems only know two PAM modes (16 and 32), Etherlink IV  works with PAM modes from 4 to 128. Although the PAM mo...

What to consider when choosing a rack • What to consider when choosing a rack. • Why racks? • A rack is any freestanding frame that doesn’t have doors or sides. There are several things you should consider when choosing a rack. If you need fre...

Tech Area • Welcome to the Black Box Tech Area site. Our Technical Support teams worldwide are dedicated to providing the best support for our products. If you need technical assistance, we offer many services. • Support Center • If you are lo...

Why Digital Signage? • No other medium makes it possible to deliver compelling content at the right location at the right time for maximum impact. It works whether your goal is to: • Increase sales and profits. • Inform, educate, notify, alert...

Create your own custom cable or adapter • Call Black Box and we help you solve your unique connectivity problems. • If we don't stock it, we'll make it for you!  • Download your Custom Cable or Adapter form • or • contact us • for more informa...

DDC (Display Data Channel) • DDC (Display Data Channel) • Defined Standard by VESA • DDC ( Display Data Channel) is a defined Standard by VESA. While DDC is just the description of the interface, the true data that is exchanged between graphic...

SCSI Ultra2 and LVD (Low-Voltage Differential) • SCSI Ultra2 and LVD (Low-Voltage Differential) • Small Computer Systems Interface (SCSI), pronounced “scuzzy,” has been the dominant technology used to connect computers and high-speed periphera...

DIN Rail, Industrial Ethernet and Low and High Temperature Grade Devices • DIN Rail, Industrial Ethernet and Low and High Temperature Grade Devices • While racks and standard office temperatures are very common when using an Ethernet Device in...

Surge vs. lightning protection. • Surge vs. lightning protection • A brief rise in voltage • A surge is a brief rise in voltage that's caused when power is switched on or off to a high-powered device. Surges can produce high-transient voltages...

IP Ratings (Ingress Protection) • IP Ratings (Ingress Protection) • Ethernet technology is coming to the factory floor. Once limited to networks in office environments, Ethernet has also proven to be a robust alternative to the RS-232 interfac...