YUSHI INSTRUMENTS
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3.6.4 DAC Curve Mode
YUT2820 can make DAC curve. Customers can choose straight line or curve lint to connect and
make DAC curve. This menu can adjust the curve mode.
Select the DAC menu, press
(up) or
(down) to select the Curve mode
submenu. Then press
(left) or
(right) to alter between straight line and curve line.
3.6.5 RL (Reference Line)
Press for twice to select the DAC menu, press
(up) or
(down) to select the RL
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 -20dB -- +12dB above the DAC
reference line. DAC reference line: a curve formed by the peak values of the echoes of the reference
points recorded.
3.6.6 SL (Size Line)
Select the DAC menu, press
(up) or
(down) to select the SL submenu. Then press
(left) or
(right) to adjust the values.
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.
3.6.7 EL (Evaluation Line)
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.
3.7 AVG menu(YUT-2820)
Press
“
Curve
”
key for three times to enter into AVG menu.
3.7.1 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.