Unibrain Firewire-800 9-pin Smart Cable - 40m/131ft (1661)

Part Number: 1661
Connectors: 9-pin to 9-pin
Length: 40 meters = 130 feet

Unibrain introduces a new family of long, locking Firewire-800 cables.
The Long Smart Firewire-800 cables can extend your firewire topology to distances up to 40 meters (130 ft) without the use of repeaters or Bus extenders, via a single, thin 75 Ohm coaxial type cable.

Each END is actually a Smart device using EqcoLogics equalizer with the following unique characteristics:

Auto-adaptive: controls a multiple pole analog filter that compensates for attenuation of the cable.
Variable gain: EqcoLogic's equalizers are used in pairs. Any differences in transmit amplitude are removed by the input pre-driver. The receiver equalizer has variable gain to compensate for attenuation through the transmission line.
Multi-speed: it supports S800, S400, S200 and S100 speeds

Features:

40m (131 ft) Firewire-800, 9 pin to 9 pin standard 1394b ports, with screw lock support.
Up to 800 Mbps full-duplex bidirectional high speed data transmission.
Multiple shielding and insulation for maximum speed without data loss.
Much thinner (Diameter 4.0 mm) and flexible than a 10m regular 1394b cable.
Developed for Low Emissions and High Immunity (automotive applications).
RoHS compliant.
AWG: 23
Min. Bend Radius (Install): 1.5in (3.81 cm)
Temperature: -30' - 75' C (-22' - 167' F)
Operating voltage: 12V

Power requirements for the IEEE 1394 bus: The most important factor considered on any Firewire topology is that sufficient power is provided to the devices guaranteeing stability on the bus.
In long distance solutions, there may be significant power loss across the power as well as the data lines.
Thus it is strongly recommended that the firewire adapter on the PC side is fed with additional power internally through its power connector.
With the 40m (131 ft) version you will need to provide additional power (12V) unless the device is self-powered (e.g. it is an external firewire disk).
If the device does not have input for additional power, you can use a FireRepeater at the end of the long cable for providing additional power to the bus through the repeaters power input jack.

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