Component vs. channel testing • Component vs. channel testing • Channel Testing • When using a Category 6 system, the full specification includes the testing of each part individually and in an end-to-end-channel. Because CAT6 is an open stand...

The MPO connector • The MPO connector • MPO stands for multifiber push-on connector. It is a connector for multifiber ribbon cable that generally contains 6, 8, 12, or 24 fibers. It is defined by IEC-61754-7 and EIA/TIA-604-5-D, also known as ...

Video • What you need to know about choosing a reliable end-to-end solution. • Brochure PDF • Connect with the Black Box guaranteed-for-life® ETL Verified structured cabling channel solution! • Black Box Explains • Category 6 •   • #testResults {w...

SCSI overview • SCSI overview • SCSI Terminology • SCSI Bus • Width (bits) • SCSI Bus • Speed (MBps) • SCSI-1 • 8 • 5 • Fast SCSI • 8 • 10 • Fast Wide SCSI • 16 • 20 • UltraSCSI • 8 • 20 • Wide UltraSCSI • 16 • 40 • Ultra2 SCSI • 8 • 40 • Wide...

How to select a cabinet • How to select a cabinet. • Consider your requirements one at a time. • The sheer number of available options and variations can make choosing a data or server cabinet a daunting task. But, by considering your requirem...

NEMA ratings for enclosures • NEMA ratings for enclosures • The National Electrical Manufacturers’ Association (NEMA) issues guidelines and ratings for an enclosure’s level of protection against contaminants that might come in contact with its...

Various DSL standards. • HDSL • — High-bit-rate DSL; uses two pairs of copper wires; E1/T1 data rates; distances up to 3657 metres over 24 AWG copper. • SDSL • — Symmetric DSL; uses a single pair of copper wires; multiple data rates of up to 2...

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...

Transatlantic G.703 comparisons. • Transatlantic G.703 comparisons • Europe • U.S. • Called E1 • Called T1 • 32 user timeslots • 24 user timeslots • Total speed: 2.048 Mbps unframed • Total speed: 1.544 Mbps unframed • User speed: ≤ 1.984 kbps...

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...