User`s guide

INSTALLING THE TRAVELER HARDWARE
23
When operating under bus power, daisy-chaining
is not recommended
The Traveler can be daisy-chained with other
FireWire devices from a single FireWire
connection to the computer. However, if the
Traveler is operating under bus power, this is not
recommended. If you need to daisy chain the
Traveler w it h ot her dev i ces on the same FireWire
bus, power the Traveler with a DC power supply
(or battery), and turn off the Bus Power switch on
the side panel. The other devices on the chain
should also have their own power supply. In
general, bus-powered FireWire devices should not
be daisy-chained.
FireWire adapter products must be powered
If you are using a FireWire adapter (a third-party
product that supplies one or more FireWire ports
to your computer), it must have direct access to a
power supply:
■ PCI FireWire cards — If you plan to connect the
Traveler to a P C I card and run the Traveler under
bus power, the PCI card must have a direct
connection to the power supply harness inside
your computer. This is the same power supply
harness to which you connect internal hard drives,
CD/DVD drives, etc.
■ PCMCIA slot adapters — If you plan to connect
the Traveler to a PC card FireWire adapter
(inserted in the PC card slot in your laptop), it
must provide a 6-pin connection and it must also
have its own power supply. Most commonly, these
types of products have a DC power adapter that
plugs into an AC wall outlet. As you can see,
however, this situation does not allow for remote
battery operation, as the PC card adapter requires
AC.
Examples of bus- powered operation
Here are a few typical examples of bus-powered
Tr a v e l e r operation:
Bus power from a desktop computer
Yo u r d e s k t o p co m p uter is running off of its usual
AC power connection, and the Traveler draws
power from the FireWire cable connected to the
computer. There are no limits to running time.
Bus power from an AC-powered laptop
This scenario is identical to the desktop situation
described above: the laptop is powered by AC, the
Traveler is p owe red v i a t he FireWire bus and there
are no limits to running time.
Bus power from a battery-powered laptop
The laptop is being powered by its own battery, and
the Traveler is being powered by its FireWire
connection to the computer. So the laptop battery
is supplying power to both the laptop and the
Traveler. Th is is the most compact and portable
operating scenario. Running time is determined by
the capacity of the laptop battery. For extended
recording sessions, bring extra, fully charged
laptop batteries.
Powering the Traveler from a battery pack
The 4-pin XLR battery jack on the Traveler side
panel allows you to connect a standard DC battery
pack, which is ideal for extended remote recording.
These products can provide multiple hours of
operation, depending on their capacity. The
battery pack should supply 10-18 volts and 12
watts. A typical application would employ a 12 volt
battery, therefore requiring 1 amp. In this scenario,
a 1 amp-hour battery will power the unit for
1 hour. A 10 amp-hour battery will power the unit
for 10 hours. Follow the manufacturer’s recom-
mendations for battery discharge for proper
battery maintenance. For further details, contact
your preferred supplier of professional audio/video
equipment.
!Traveler Manual/Win Page 23 Monday, November 29, 2004 3:50 PM