impact EX-100A, Instructions Manual

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Best Practices
As with any flash unit, the useful life of the flash tube and the unit as a whole depends on
the way it is used. Avoiding excessive heat is the key to long life.
• The fast recycling feature of the EX-100A allows a rapid sequence of high-power
flashes. However, this feature should be used sparingly, since continuous rapid flashing
can cause overheating and subsequent damage to the flashtube and possibly the
internal electronics.
• Rapid sequences of flashes should always be followed by a reasonable cooling period;
10 to 20 minutes without flashing, or at a substantially reduced rate.
• Dimming or turning off the modeling lamp will reduce heat.
• Avoid rapid high-power flashing when using restrictive reflectors such as snoots or
grid reflectors, particularly if the unit is pointing downward.
• Do not flash over 12 shots per minute for over 10 minutes.
• Do not flash over eight shots per minute for over 30 minutes.
• Take special care when shooting in a high-temperature environment.