12 cyclic sampling, Cyclic sampling -11 – Campbell Scientific OBS-Mobile Software for Archer-OBS User Manual

Page 17

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Section 1. Operations

1.12 Cyclic Sampling

This mode is for logging data at regular time intervals such as 1, 10, 15, 30,
etc. minutes for example.

1. Request

Barometric Correction. Be sure to do this while the

OBS-3A is at the surface. Doing so when the instrument is submerged
will result in large depth errors.

2. Click

and select sensors, statistics, 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. Configure the Wave Setup if you want to measure wave heights and

periods (see Section 1.8—Definitions). Do this before scheduling the
other sample parameters.

4.

Select Interval, Duration, Rate, and Power level; see recommendations
in “Sampling Schedules” (Section 1.9). The duration must be longer than
the Record Length. The minimum duration for the Record Length will
be computed and displayed by the OBS-Mobile.

5. Click Start Sampling to begin logging data. Unplug test cable; install

dummy plug and locking sleeve. The instrument is ready for deployment.

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