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56
29. E
nable the dVK option by using the adjacent key and set the curve factor using the setting keys
and
;
3
0. Enable the DELAY option by using the adjacent key and set the probe delay value using the setting keys
and ;
3
1. Select SET ATT in the MODE video window using the
key;
3
2. Enable the T-LOSS window by using the adjacent key and set the transfer loss value using the setting
keys
and ;
3
3. Enable the REF. dB/m window by using the adjacent key and set the sample material attenuation value
using the setting keys
and ;
3
4. Enable the MAT. dB/m window by using the adjacent key and set the specimen material attenuation
value using the setting keys
and ;
3
5. Select SET REF in the MODE video window using the
key;
3
6. Enable the TBVEL option by using the adjacent key and set the sample material velocity value using the
setting keys
and ;
3
7. Enable the REF TYPE option by using the adjacent key and set the reference reflector type using the
setting keys
and ;
3
8. Enable the REFSIZE option by using the adjacent key and set the reference reflector dimension value
using the setting keys
and ;
3
9. Select SET SIG in the MODE video window using the
key;
4
0. Select the CURSOR window by using the adjacent key and position the vertical bar using the setting
keys
and ;
4
1. Once all of the parameters have been set and the echo selected press SET.
42. The instrument will perform the calculations for construction of the curve: on the screen the
REFERENCE CALCULATION, TEST SENSITIVITY CALCULATION and CURVE
CONSTRUCTION windows appear in sequence;
43. The curve is now enabled and is displayed on the screen (MODE video window on ON and AVG written
on the lower right of the battery level indicator);
44. Enable the TRIGGER option by using the adjacent key and select the monitor type using the setting keys
and ;
4
5. Enable the ERS option by using the adjacent key and set the equivalent flaw value using the setting keys
and . If this parameter is changed, the instrument will calculate the test sensitivity again and
r
edraw the curve;
46. To turn off the curve select OFF in the MODE window using the
key.
11.
4.6 TCG Menu (Time Corrected Gain)
This menu is used to construct the gain/time correction curves (TCG), i.e. the gain compensation curve based
on the ultrasonic path. The result is that the discontinuities with the same equivalent dimension but placed at
different distances in the specimen provided responses with equal amplitude. These curves are constructed
using a series of reference echoes.
N.B.: This function is only included in the RDG700 and RDG800 instruments.
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