GAMMA ERT 300 - Manual (Page 4)

DYNAMIC TENSION DT
The DT-value is the stiffness of the string bed that
effects during the ball impact of any racquet.
DT determines the playing characteristics POWER
and CONTROL.
Higher DT provides more control
Lower DT provides more power (ball speed up)
DT is ball power in kilo pond (kp) required to depress the string bed 1 cm at the
sweet spot (ball impact).
Internat. standard units kp/cm or Newton/mm
The DT-value is measured with the ERT 300 Tennis computer by electronic simulation
of the ball impact (vibrations). All factors of influence such as racquet type, racquet
size, string pattern and string characteristics are automatically taken into account.
DT is the only realistic (since close to play) and precise value that can be measured
directly at the strung racquet.
What is the DT-value
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The DT can be mainly determined by 4 ranges:
Lo, Mid, Hi, Hi+
(not to be mixed with the racquet size)
Each player determines his DT reference value respectively DT playing rang best
suited for his power level and style of play (overlapping possible). Optimum stringing
ensures play with maximum ball control and power reducing fatigue and the rebound
shock.
The string bed is the heart of the racquet. The proper combination of string and
Dynamic Tension DT suited for a specific style of play is necessary to obtain maximum
player performance.
How to find the optimum DT-value
DT 47 - 56 DT 42 - 46 DT 35 - 41 DT 28 - 34
PLAYING Know your best DT
Defensive
from the
baseline
Dynamic
and offensive
Fast and
aggressive
Very fast and
extremely
aggressive
MORE CONTROL
MORE POWER
E
N
G
LI
S
H
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Club / WTA Club / WTA / ATP ATP (mostly jused) Club Club / WTA Club / WTA / ATP ATP
Hi Mid Lo Hi+