EIJKELKAMP Scuba, Руководство пользователя

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5. Data logging
Batteries loaded backwards (reversed polarity) can damage any battery pack and may cause
pressure to build up inside the battery pack. So please pay careful attention to the polarity
markers found on all Eijkelkamp battery packs.
5.1 What’s the difference between “Logging” and “Snapshot”?
“Logging” always refers to unattended data capture and storage in the Scuba. “Snapshot” refers to the manual capture of
data into your data display (PC or small-screen device).
5.2 Why we do logging the way we do
Lesser manufacturers may require that you type in long strings of digits to specify start time, start date, end time, end
date and logging interval. One wrong digit and you might get no data. The Scuba requires only that you click one hot
button, install batteries, and (for Scuba 90 and 105 models) flip the battery-pack switch to “ ON ”. No typing. Once this is
done, the red LED will blink five times to confirm that logging is activated, and the green LED will blink briefly to confirm
that the Scuba is receiving adequate voltage to start logging. It’s fast and fool-proof.
Another user-friendly feature of the Scuba logging time uniformity. For instance, if your logging interval is 15 minutes and
you turn logging on at five minutes past 10 AM, your first data will be logged at exactly 10:15, and then every 15 minutes
thereafter. If your logging interval is one hour and you turn logging on at five minutes past 10 AM, your first data will be
logged exactly at exactly 11 AM, and then every hour thereafter. Your data are cleaner, and it’s easier to match times if
you wish to merge data logs.
5.3 Sensor warm-up
Your Scuba knows the warm-up times required for all the sensors you have enabled. It figures out exactly when to turn
the various sensors on so that a frame of data can be taken exactly at the correct time. For instance, the HDO dissolved
oxygen sensor takes 20 seconds to warm up and the turbidity sensor takes 25 seconds to warm up. So, the Scuba turns on
the DO sensor 20 seconds, and the turbidity sensor 25 seconds, ahead of the time data is required. This minimizes power
consumption.
5.4 Setting up logging runs, logging file management, logging interval
These Scuba logging functions are software-driven and explained in Section 3.5.2.
5.5 Activating Scuba logging
To initiate logging, you must “activate” logging by clicking the “ Scuba logging is OFF ” hot button so that it changes to
“ Scuba Logging is ON ”.