Milltronics AiRanger SPL PL-573, Instruction Manual

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Page 58 AiRanger SPL PL-573
Enhancement Pa
ra
m.
Alternatively, if the current sound velocity is known, enter the current sound velocity.
(Refer to Technical Reference Sound Velocity).
The units used are m/s if P005 = 1, 2, or 3 (ft/s if P005 = 4 or 5).
Values:
50.01 to 2001 m/s (164.1 to 6563 ft/s)
P654 Velocity at 20°C
View the current vessel atmosphere sound velocity normalized to 20°C (68°F).
This value is used to calculate Sound Velocity (P653), using Temperature (P664)
based on the sound velocity vs. temperature characteristics of "air".
After a Sound Velocity Calibration, this value may be checked to verify whether the
vessel atmosphere is "air" (typically 344.1 m/s or 1129 ft/s).
Alternatively, if the vessel atmosphere sound velocity at 20°C (68°F) is known, and
the sound velocity vs. temperature characteristics are similar to that of "air", enter the
sound velocity.
The units used are m/s if P005 = 1, 2, or 3 (or ft/s if P005 = 4 or 5).
Values:
50.01 to 2001 m/s (164.1 to 6563 ft/s)