GAMMA ERT 300 - Manual (Page 5)

Use the enclosed DT-disc for reading out the currant string tension kp (lbs.)
Example:
Racquet size MID+ (98 sq.in.)
string tension 25 kp (55 lbs.)
Measured DT-value
Set the measured DT-value 38 DT
Read out the average string tension 25 kp (55 lbs.)
After the stringing process, the tension of an individual string can no longer be measured
directly. The string bed stiffness DT is measured precisely by electronic simulation of the
ball impact. The corresponding string tension kp (lbs.) can be read at the DT-disc as an
average value.
25.0
55
TENNISCOMPUTER
DT is string bed stiffness
kp/cm, N/mm
(internat.standard.units)
DT determines the
mode of play.
kp/lbs. Average string tension. Deviations may occur depending
on string materials and stringing technic.
Restring the racket when DT tension loss 10% max. 20%.
A ll rig ht s re se rv ed
B E E R S T ec hn ic G m bH
681 - 740 cm2 106 - 115 sq.in.
611 - 680 cm2 95 - 105 sq.in.
540 - 610 cm2 83 - 94 sq.in.
Racket Size Tension
kp lbs.
kp
lbs.
kp
lbs.
OVER
MID +
MID
STRING
TENSION
kp
DYNAMIC
TENSION
DT is the only realistic and precise value to be measured at the strung racket.
Defensive from the baseline
Dynamic and offensive Fast and aggressive Very fast and extremely aggressive
DT 47 - 56 DT 42 - 46 DT 35 - 41 DT 28 - 34
PLAYING Know your best DT
MORE CONTROL MORE POWER
How to know the string tension kp (lbs.)
38
After determing of the suitable DT-value the corresponding machine pull tension set
in kp (kilopond) or lbs. (pounds) is to be read out at the DT-disc.
Example:
Racquet size MID+ (98 sq.in.)
pull tension 25/24 kp (55/53 lbs.)
Required string bed stiffness of
DT 38 which means dynamic
and offensive play
Set the required DT-value 38 DT
Read out the corresponding string tension 25 kp (55 lbs.)
String the racquet with 25/24 kp (55/53 lbs.)
The effective resulting DT-value may deviate slightly. This is not unusual and is
subject to string material, racquet design, string pattern and stringing technique etc.
The experienced stringer will adjust the tension on his stringing machine accordingly.
Check periodically the machine pull tension.
Do not forget: Within the first 2 to 4 hours after stringing, there is often a remarkable
tension loss of 2...4 DT, called the stabilization losses.
How to obtain the required DT-value
25.0
55
TENNISCOMPUTER
DT is string bedstiffness
kp/cm, N/mm
(internat.standard.units)
DT determines the
mode of play.
kp/lbs. Average string tension. Deviations may occure depending
on string materals and stringing technic.
Restring the racket when DT tension loss 10% max. 20%.
A ll rig ht s re se rv ed
B E E R S T ec hn ic G m bH
681 - 740 cm2 106 - 115 sq.in.
611 - 680 cm2 95 - 105 sq.in.
540 - 610 cm2 83 - 94 sq.in.
Racket Size Tension
kp lbs.
kp
lbs.
kp
lbs.
OVER
MID +
MID
STRING
TENSION
kp
DYNAMIC
TENSION
DT is the only realistic and precise value to be measured at the strung racket.
Defensive from the baseline
Dynamic and offensive Fast and aggressive Very fast and extremely aggressive
DT 47 - 56 DT 42 - 46 DT 35 - 41 DT 28 - 34
PLAYING Know your best DT
MORE CONTROL MORE POWER