Kramer Electronics 648 - Manual (Page 4)

KRAMER: SIMPLE CREATIVE TECHNOLOGY
Overview
2
3 Overview
The high performance 648 FireWire 800/1394b Optical Repeater can connect
between a host computer and remotely located peripheral devices via fiber
optics. IEEE 1394b protocol signals can be extended to up to 500m (1640
feet), with a data rate of up to 800Mbps in full duplex mode 1 .
In particular, the 648:
Fully complies to the 1394b-2002 standard and is backward-compatible to
the 1394a-2000 and 1995 standards at 100/200/400Mbps
Includes two electrical bilingual ports and an optical duplex LC fiber optic
connector (transmitter and receiver)
Includes full P1394a support, that is, Connection Debounce, Arbitrated
Short Reset, Multispeed Concatenation, Arbitration Acceleration, Fly-By
Concatenation, Port Disable/Suspend/Resume
Meets Class 1 eye safety, certified by FDA/CDRH and IEC 60825-1
Works with both PC and Mac computers
Provides power through the connector
3.1 About FireWire
The Kramer DigiTOOLS 648 is based on FireWire which:
Is a serial bus standard 2 that enables quick universal interfacing between
video and computer hardware items 3
Is simple to use and operates independently of the host system, letting you
connect more items than you otherwise could (as a computer only has
limited ports available), and for extended distances. Several can be
cascaded to create up to a 63 port FireWire Repeater / HUB
Supports Plug and Play
4 , hot swapping 5 and isochronous 6 and
asynchronous applications
1 While the maximum cable length for transferring a 1394b protocol signal is currently 4.5 meters, the optical cables support
extension to up to 500 meters
2 Originally developed by Apple™ and published as IEEE 1394 by the Institute of Electrical and Electronics Engineers
3 Hardware items include digital cameras, computers, printers, VCRs, CD-ROMs, hard disks, scanners and graphic cards
4 Configures automatically. Whenever a device is added or removed the 1394 bus re-enumerates
5 You can connect and disconnect inputs and outputs dynamically, without having to restart the computer or cycle power
6 Video / audio applications require constant transfer rates, which the serial bus provides by supporting isochronous transfers