First, read the Amphibian manual.
Second, connect the Amphibian to your Manta 2 cable’s 9-pin connector.
Three, you’re done as the Amphibian uses the same type of program as is used on the PC.
G Logging
G1 The Difference between “Logging” and “Snapshot”
“Logging” always refers to unattended data capture and storage in the Manta 2. “Snapshot” refers to the manual
capture and storage of data in your PC or Amphibian.
G2 Why We Do Logging the Way We Do
Other Manufacturers require you type in long strings of digits to specify start time, start date, end time, end date, logging
interval, and who knows what else. One wrong digit and you might get no data. After you activate Manta 2 logging via
the PC or Amphibian, however, the Manta 2 has a simple logging-activation mechanism. For the 2-, 2.5-, and 3-inch
Manta 2’s, all you have to do is attach the external battery pack. For the 3.5- and 4-inch Manta 2’s, all you have to do is
flip the ON/OFF switch to ON. In both cases, in most Manta 2 models, the LED indicator lights will confirm that logging
is enabled, the logging interval value, and that sufficient voltage remains in the batteries. The Manta 2 method is faster,
simpler, and virtually foolproof.
Another user-friendly feature of the Manta 2 is synchronization of logging times. For instance, if your logging interval is
15 minutes and you turn the logger 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 on the logger at five minutes past 10
AM, your first data will be logged exactly at exactly 11 AM, and then every hour thereafter. In addition to making the
data log cleaner, this makes it easier to match times if you wish to merge data logs.
G3 Activating Manta 2 Logging
Before you go to the field to deploy your Manta 2 for unattended logging, always turn logging “ON” using the logging hot
button on your PC or Amphibian Manta 2 Control Software. When you get to the field, all you have to do is connect the
external battery pack or, for internal battery packs, flip the battery-pack switch to “ON”. Logging will start and continue
until you disconnect external power or flip the battery-pack switch to “OFF”.
G4 Logging Interval
Logging interval, the time between logging runs in your Manta 2, is set with the “Set Logging Interval” menu under the
“Manta 2” pull-down menu in the Manta 2 Control Software. Once you specify an interval, you never have to do it again
unless you wish to use a different interval.
G5 Sensor Warm-Up
Your Mantra 2 knows the warm-up times required for all the sensors you have enabled. Then 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
Clark Dissolved Oxygen sensor takes two minutes to warm up and the turbidity sensor takes 10 seconds to warm up.
So the Manta 2 turns on the DO sensor two minutes, and the turbidity sensor 10 seconds, ahead of the time data is
required. This minimizes power consumption, and you don’t have to do anything.
G6 Internal Battery Packs
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