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Functionality
Power supply
The D4 Air generator can be connected to 100-240VAC, 50-60Hz. The generator
automatically senses and adapts to the voltage and frequency supplied.
WARNING:
Never use ordinary household extension cables to elongate the power cable, since they may overheat. Always
unwind all cable if an extension cable is used.
Lamp head configuration
The D4 Air generator is designed to – by configuration – be compatible with either the
10
Acute/D4 series or the Pro series of heads. The default configuration is compatibility with
the Pro series of heads. The configuration is easily changed; see instructions on page 17.
When the D4 Air is configured for the Pro series of heads, there is no need to change the
modeling lamp when using Pro heads. The modeling light is powered correctly by the
generator – worldwide.
When the D4 Air is configured for the Acute/D4 series of heads, it is important to use
modeling lamps that correspond to the local mains voltage: 100V modeling lamps in
100V markets, 120V modeling lamps in 110-120V markets and 240V modeling lamps in
200-240V markets.
PLEASE CHECK THE CONFIGURATION OF THE GENERATOR, THE MODELING LAMPS AND
THE MAINS VOLTAGE BEFORE CONNECTING A FLASH HEAD!
Energy distribution
The D4 Air generator offers a flexible, fully asymmetric energy distribution to all four lamp
sockets. Non-used sockets are automatically deactivated.
When only one lamp head is used, it should be connected to Lamp Head Socket A or B [9].
These sockets can be used to release the total energy (100%) of the generator to one lamp
head. With one head connected to socket C, 50% of the total energy can be released and
with one head connected to socket D, 25% can be released.
When two or more lamp heads are connected, the maximal energy level in total for all
heads is of course 100%. It is not possible to select a higher energy level setting than the
maximal; when the upper limit is reached, the energy level setting shown in the Energy
Display [10] will stop at the maximal value even if you try to increase the energy level.
NOTE:
Since the D4 Air works with separate capacitor banks for best color and f-stop stability, about 1/10 f-stop of the total
energy may not be available at some settings when using two or more lamp heads.
www.profoto.com
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