
Section 3. Operations
3.11 Surveying
If you have a pressure sensor, click the OBS menu and select Barometric
Correction (do not do this when the OBS-3A is submerged
). The OBS-3A
takes about five seconds to measure the surface pressure and compute a
barometric correction.
1. Connect OBS-3A to PC with survey cable.
2. Use to select: sensors, lines per minute, depth units (Meters or Feet),
water Temperature, and Salinity. Selection of temperature and salinity
only affects the depth calculation. It does not influence temperature or
salinity measurements.
3. Click Start Survey and check data flow in data window.
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