ALLIED Vision Technologies Pike F-1600 - Manual (Page 44)

FireWire
PIKE Technical Manual V5.1.2
44
FireWire Plug & play capabilities
FireWire devices implement the ISO/IEC 13213 configuration ROM model for
device configuration and identification, to provide plug & play capability. All
FireWire devices are identified by an IEEE EUI-64 unique identifier (an exten-
sion of the 48-bit Ethernet MAC address format) in addition to well-known
codes indicating the type of device and protocols it supports. For further details
read Chapter
Configuration of the camera on page 292.
FireWire hot-plug and screw-lock precautions
Caution

Hot-plug precautions
• Although FireWire devices can theoretically be hot-
plugged without powering down equipment, we strongly
recommend turning the computer power off, before
connecting a digital camera to it via a FireWire cable.
• Static electricity or slight plug misalignment during
insertion may short-circuit and damage components.
• The physical ports may be damaged by excessive ESD
(electrostatic discharge), when connected under powered
conditions. It is good practice to ensure proper grounding
of computer case and camera case to the same ground
potential, before plugging the camera cable into the port
of the computer. This ensures that no excessive difference
of electrical potential exists between computer and cam-
era.
• It is very important not to exceed the inrush energy of
18 mJoule in 3 ms. (This means that a device, when pow-
ered via 12 V bus power must never draw more than 1.5 A,
but only 0.5 A in the first 3 ms, assuming constant flow of
current.)
• Higher inrush current may damage the physical inter-
face chip of the camera and/or the phy chip in your PC.
Whereas inrush current is not a problem for one Pike cam-
era, daisy chaining multiple cameras or supplying bus
power via (optional) HIROSE power out to circuitry with
unknown inrush currents needs careful design consider-
ations to be on the safe side.