YUSHI INSTRUMENTS
19
Note: SL can be adjusted free in a range 12dB higher than the DAC reference line with a step of
0.5dB, or 20dB lower, but it can not be lower than the EL or higher than the RL.
3.5.7 EL
Select the DAC menu, press (up) or (down) to select the EL submenu. Then press
(left) or (right) to adjust the values.
Note: based on step of 0.5dB, you can adjust free in the range of 0dB -- 20dB lower than the DAC
reference line.
3.5.8 AVG mode
The instrument offers two modes for making AVG curve: bottom and hole.
Press “Curve” key for three times to select the AVG menu, press (up) or (down) to
select the AVG mode submenu. Then press (left) or (right) to change between the two
modes.
3.5.9 Gate A start
The instruction is the same with that in DAC menu. See 3.6.2 for details.
3.5.10 Sensitivity
When making AVG curve with “Bottom” mode, the dB value that makes the flaw echo to reach a
certain height of the full screen is sensitivity.
Press “Curve” key for three times to select the AVG menu, press (up) or (down) to
select the sensitivity submenu. Then press (left) or (right) to change the value.
The range of the values is from
φ
0 to
φ
90.
3.5.11 AVG Curve
This function is used for making AVG curve with the know
φ
value.
Press “Curve” key for three times to select the AVG menu, then press (up) or (down)
to select the AVG curve submenu. Then press (left) or (right) to change the value. In other
words, this function is to make curve of
φ
X.