DX-300 – DIVER HELD MAGNETOMETER
User Manual
11
1.9
If the performance becomes unacceptable after less than what you (the
operator) determine to be an acceptable minimal operational period, then the
DX-300 Battery Pack needs to be replaced.
Note: If your battery needs to be replaced please contact our technical support dept
to arrange for an installation of a replacement battery, or in the case of an
approved service agent please refer to the servicing data provided.
Please consider NiMH batteries as hazardous material and dispose of your old
battery pack in line with local guidelines.
Troubleshooting Guide
Symptom:
No Response from DX-300 Module
Check the following:-
1.
Check that the battery has been charged – If not, place DX-300 on
charge and then re-test. Note. As the voltage drops below a certain
point, erratic behaviour will result. Further decrease in voltage will
result in total lack of functionality.
2.
Check that both Sensor Probe and Bonephone are correctly connected
3.
Try using an alternative Bonephone/AQ1B Headphones.
4.
Try using an alternative Sensor Probe if available.
5.
Check that both the Sensor Probe and Bonephone are in good
condition. Check by substitution if possible or by monitoring the
nominal resistance of Bonephone/Headphones. Connecting a good
quality multi-meter across the pins of the plug can check the resistance.
NB. It is good policy to firstly check the multi-meter’s reading with the
leads shorted together - this provides a measure of what residual
reading to take into account.
>See DX-300 Resistance Chart below: -
Item
Resistance (ohms)
Bonephone
5.4
Land Headphones
15.0 (Minimum Volume)
U/W Headphones
10.5
6.
There is no user test for the Sensor Probe other than visual mechanical
inspection. Inspect the connector and cable, looking for any signs of
damage that could allow ingress of water into the cable or connector.
If
damage
is
found,
contact
your
Aquascan
agent
for
servicing/replacement.
