Profoto PRO-8A 2400 AIR - Manual (Page 8)

Pro-8a 2400 Air – Pro-8a 1200 Air
8
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Proring 2
For fashion or macro photography, when you want a direct and very prominent light, the
Profoto ProRing 2 provides a ring flash capable of unlimited flash repetition rate due to built-in
thermally controlled silent and efficient fan cooling. The optimized flash tube is made by high
grade UV-free filtered quarts glass and heavy duty electrodes to maximize life time.
A powerful 200 W halogen modeling light are built-in with switch and fuse.
functionality
Power supply
The Pro-8a generator can be connected to 100–120 VAC or 200–240 VAC, 50–60 Hz. The
power supply fuse must not be smaller than specified in the technical data. The generator
automatically senses and adapts to the voltage and frequency supplied.
WArninG
Never use ordinary household extension cords to elongate the power cable. They may overheat. Always unwind cord
reel extension winders fully before use. Contact your Profoto dealer for proper equipment.
Due to the two stage SMPS (Switch Mode Power Supply) technology, the Pro-8a could
make a hearable sound during the recharge cycle. This is fully normal and could be seen
as the sign of power being charged into the generator.
energy control
The selected energy levels for channel A and B are shown in Flash Light Energy Display
A [6] and B [17].
The f-stop scale reading is default. To show energy in Ws scale, push and hold the Ws
Switch [1].
In f-stop scale, the maximal energy (100%) is shown as 10.0. In Ws scale, the maximal
energy (100%) is 2400 for Pro-8a 2400 Air and 1200 for Pro-8a 1200 Air.
The maximal energy for channel A is 10.0 (100%) and the maximal energy for channel B
9.0 (50%). The maximal energy in total for the two channels is 100%.
Flash Light Energy Control A [8] and Control B [19] are used to adjust the energy levels for
channel A and B respectively:
• Turn the control clockwise to increase the energy in 1/10 f-stop increments and counter-
clockwise to decrease.
• Press and hold down the control (a “beep” will sound) and turn the control clockwise to
increase the energy in 1 f-stop increments and counter-clockwise to decrease.