33
velocity 5920m/s, gain appropriate value.
(3) Enter the CAL menu, select: CAL SET: speed/delay; S-REF 1: 100.0mm;
S-REF 2: 200.0mm.
(4) Move Gate A to capture the first bottom echo (refer to Figure 6-2). Enter the
CAL submenu, and press [+] key to confirm echo 1, then "0" is turned to "1" in
CAL submenu.
Figure 6-2 Move Gate A to Capture the First Bottom Echo
(5) Move Gate A to capture the second bottom echo (refer to Figure 6-3). Enter
the CAL submenu, press [+] key to confirm echo 2 (after "calibration
completed" being displayed in the screen, "1" is turned to "0" in CAL submenu),
then the delay calibration value will display in CAL submenu and also in
P-DELAY submenu.
Figure 6-3 Move Gate A to Capture the Second Bottom Echo