The Phase One FireWire 800 DC plug is designed to provide continuous power to the IQ1, IQ2 and IQ3 digital backs, when used for instance in a copy stand setup.
With this plug installed and powered from a standard Phase One battery charger power supply, it is now possible to connect the computer to the IQ digital back via USB, and have power in on the FireWire connection at the same time – thus you will not have to change the battery in the digital back from time to time.
If you are using an XF Camera System with IQ3 digital back, the XF camera body will also be charged, due to the power share feature.
Charging from PC needs to be set to Fast
In the IQ digital back, “Charging from PC” have to be set to “Fast”
[Menu > Power Management > Charging from PC > Fast]
In this setting charging from FireWire or USB will be enabled. If DC plug is inserted and connected to a wall outlet, the USB charging will be disabled, so that power from for instance a laptop, is not drained. FireWire power charging is per default used, if present.