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10M
25M
50M
75M
100M
10Y
25Y
50Y
75Y
100Y
A
T
B
C
D
E
F
K
L
M
N
O
P
Q
R
S
G
H
I
J
Best Practices
As with any flash unit, the useful life of the flashtube 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 VSD Series 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 the modeling lamp off will reduce heat generation.
• 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 more than 10 minutes.
• Do not flash over 8 shots per minute for more than 30 minutes.
• Take special care when shooting in a high-temperature environment.
