Kramer VS-40FW [5/13] Overview

Overview

3 Overview

This section summarizes:

• The VS-40FW see (section

3.1)

• FireWire® (see section

3.2), FireWire® 800 (see section 3.2.1) and

FireWire® compliance (see section

3.2.2)

• How to achieve the best performance (see section

3.3)

3.1 About the VS-40FW

The VS-40FW is a high-performance bidirectional hub/repeater for 9-pin

FireWire® 800 (IEEE 1394b) signals. It increases the number of ports

available and/or extends the distance of FireWire® cable runs.

The VS-40FW features:

• 4 bidirectional IEEE 1394b 800Mbps (S800) ports

• A range of up to 9m (30ft). This is double the FireWire® range of 4.5m

(15ft). Multiple units can be cascaded to extend the range to up to 72m

(240ft)

• Support for Plug and Play

, hot swapping

and isochronous

• Transfer Rates of 100, 200, 400 and 800Mbps

and

asynchronous applications

• ESD Protection

The VS-40FW can supply up to 2.1A to the bus (each port can provide up to

1A). An external 12V DC power supply, or can be powered via a

FireWire® connection from a PC.

- incorporates Kramer’s Spark-Guard Pro™ signal

protection circuitry to help protect against EDS (electrostatic

discharge) that can damage digital equipment

1 When a device is added or removed, the 1394 bus re-enumerates and configures automatically

2 You can connect and disconnect inputs and outputs dynamically, without having to restart the PC or cycle power

3 Video/audio applications require constant transfer rates, which the serial bus provides by supporting isochronous transfers

4 Sometimes when connecting a "live" DV source to a receptor, an electrical potential difference or any other element

creating a high voltage (such as ESD or a live chassis) may permanently damage one or both of the connected devices. This

high voltage may be seen as a spark occurring at the instant of connection, or may not be seen at all, but nevertheless can

result in costly damage