User Manual for AML Oceanographic Base
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If the indicator does not light up, the instrument is not operating correctly.
Continue with the remaining troubleshooting items.
•
Allow at least two sample periods for the instrument to detect that it is immersed.
•
Was the red shorting plug firmly seated in the instrument?
•
Are the batteries dead (LED light does not illuminate when shorting plug is installed)?
•
Were the sound velocity increment, pressure increment and/or sample rate settings set to
values that could prevent logging?
•
Was the log file name set correctly?
•
Is the connector damaged, dirty, or corroded?
•
If all previous steps fail, reset the instrument. Send an
INIT
command to the instrument to
re-initialize the memory.
Note: The
INIT
command will completely erase all settings stored on the instrument.
Instrument generates noisy data:
•
Is the connector damaged, dirty, or corroded?
•
If connected to external power, is there noise on the power supply? Switch-mode power
supplies are common sources of noise.
•
Nearby EMI sources such as electric motors can create noise. If possible, move the
instrument and its cables away from the noise source.
•
Are the sensor/s clean?
•
Are there bubbles on or in the sensor/s?
•
Are the sensor/s damaged?
•
Is there something nearby affecting the water temperature?
Battery fails to fully charge:
•
Is the charger connected to the data/power cable?
•
If the instrument is used while charging the battery, the changes in power consumption can
cause the charger to stop charging prematurely. The charger monitors the charging power
to detect when the battery is charged; fluctuating power from the instrument can corrupt the
algorithm. To ensure proper charging, manually reset the charger when you have stopped
using the instrument (refer to procedure below).
•
If the charger light is green but the battery voltage is less than 8 volts, manually reset the
charger (refer to procedure below).
•
If the charger light is green and the battery voltage is between 8 and 8.3 volts, this is normal.
The charger will charge the battery up to 8.3 volts. However, if the data/power cable is left
plugged in to the instrument, the instrument will remain on and draw on the battery. When
the battery voltage drops below 8 volts, the charger will automatically begin charging the
battery up to 8.3 volts. The charger can be restarted at any time by manually resetting the
charger (refer to procedure below).
•
To stop the battery from draining down to 8 volts, unplug the data/power cable from the
instrument as soon as the red light on the charger turns green. This will turn off the
instrument.
•
To manually reset the charger
: Unplug the charger from the wall and plug the charger
back in. This will reset the charger and start charging the battery.
