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B – Options
With drive current applied to the coils of the 440 System, large induced voltages
can appear across the coils of the 350 System. Later versions of the 350 search
coils (serial numbers from 570 and upwards), include diodes to protect them from
damage caused by these induced voltages.
If your System includes coils that have no diode protection (serial numbers below
570), you should ensure that there is a clearance of more than 0.75 metres
between the coils of the 440 System and the coils of the 350 System. Contact
Teledyne TSS for advice if necessary.
B.1.5 Sub-sea Pods
The Dualtrack System includes three sub-sea pods:
❐
The PSU for the 440 System.
❐
The SEP for the 440 System.
❐
The SEP for the 350 or 350 Powertrack System.
Follow the instructions in sub-section 3.2.1 of the 350 / 350 Powertrack Manual to install the 350 / 350
Powertrack SEP.
Follow the instructions included in
the 440 SEP and the 440 PSU.
B.1.6 Electrical Connection
It is very important that you should interconnect the sub-sea components exactly as described in
Figure B-4
and the instructions below.
If the Dualtrack System is an upgrade to an existing 440 System, you must open
the 440 SEP and set it to use RS232 communications. See section 4.2.2.1 "Alter-
native Communication Methods" on page 4-11 of the 440 Manual for instructions
to change the communication method used by the 440 SEP.
B-6
CAUTION
section 3.1.2 "SEP and PSU" on page 3-3
IMPORTANT
© Teledyne TSS
of this Manual to install
DPN 402196 Issue 4.1
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