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Recharging
The recharging speed is controlled by pressing the Recharging Speed Button [21]:
• When the Recharging Speed Button [21] is unlit, the generator will recycle at normal
speed. Select this alternative when the generator is connected to mains supply with
weak or unknown fuses.
• When the Recharging Speed Button [21] is lit, the recharging will be faster.
The white Ready Lamp [18] will turn on when the generator is fully charged and ready to flash.
To prevent incorrect exposures, it is not possible to release a flash while the generator is
charging. If you try, a long beep will indicate that no flash was released.
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Ready signaling
Ready signaling is used to indicate when the recharging of the generator is completed.
The Ready Mode Button [17] is used to select one of the following ready signaling
alternatives:
• OFF: No ready signal.
• DIM: The modeling light will be turned off while the generator is being charged.
• BEEP: A short audible signal will indicate that the charging of the generator is
completed.
• BUZZ: An audible signal with several "beeps" will indicate that the generator is being
charged.
• BEEP-DIM: The modeling light will be turned off while the generator is being charged
and a short audible signal will indicate that the charging of the generator is completed.
• BUZZ-DIM: The modeling light will be turned off and an audible signal with several
"beeps" will indicate that the generator is being charged.
The Ready Mode Indicators [16] show the current ready signaling setting.
Synchronization
The D4 Air generator can be synchronized with the camera in different ways:
• The two Sync Sockets [4] allow the camera and a flash meter to be connected
simultaneously. The 5 meter sync cable can without restrictions be elongated with
a sync extension cable. Generators can be connected by means of the Profoto sync
interconnection cord.
• The Photocell/IR slave [5] will sense other flashes as well as IR signals from most IR
sync transmitters. The Slave Button [6] is used to activate (lit button) and deactivate
(unlit button) the Photocell/IR slave.
• Synchronization via the Profoto A ir radio system, see section Remote sync and control
below.
www.profoto.com
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