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6 – Operating Procedure
6.3.1.7 Coil Mapping
For normal operations, you should leave coil mapping set to its default configuration '1234'. However, if
you change the connections between the coils and the SEP channels, you will have to change the coil
mapping configuration accordingly. To do this, enter the System Parameters Window [Shift+F2] from
the Configuration options.
6.3.1.8 Save and Print the Configuration
After the display software completes its initialisation sequence, it will search for a file that contains the
initial System configuration. You may modify this file by saving a new start-up configuration that is more
appropriate to the requirements of your survey.
After you have established the correct survey configuration for the System, select 'Print Configuration'
from the 'File' Menu. If you do not have a printer connected to the SDC, you may use this screen and
then write the details onto a suitable form.
Whether you create a hard copy of the configuration by hand or whether you print the details, you
should keep a record of the System configuration with the survey log.
6.3.2 Pre-dive Checks
You should perform these important functional checks on the 440 System before you deploy the ROV.
Note that you may display a list of the recommended pre-dive checks by pressing [F8] from the
Operation Menu.
1. Coil insulation test
2. Target detection test
3. Oscilloscope test (in air and in water)
4. Altimeter test
Draft proposals have been issued by the National Radiological Protection Board
(NRPB) that restrict personal exposure to Electric and Magnetic fields. Users of
the Teledyne TSS 440 System should therefore note the following:
Although the search-coils generate intermittent strong magnetic fields while
operating, beyond a distance of 1.5 metres from the coil surface the field strength
is below the maximum level recommended within the NRPB guidelines.
1. Do not handle the search-coils when they are powered-on.
2. When power is applied to the search-coils, all persons must be at least 1.5
metres from the coil surface.
These restrictions apply only to the search-coils, and only when they are under
power.
Teledyne TSS recommends that you press [F5] from the Run Display screen to
switch off coil drive while working close to the coils.
6-12
WARNING
© Teledyne TSS
DPN 402196 Issue 4.1
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