Instruction manual, SPT and MPT 31x series transponders

SPT and MPT 31x series
Caution
When you deploy the transponder, the anchor-weight
must be lifted separately from the transponder. DO
NOT attempt to lift both the transponder and the
anchor-weight via the transponder -the transducer cage
is only approved for lifting the transponder and the
floating collar.
When you deploy the transponder:
The unit must be positioned with the transducer upright.
Ensure a clear line of sight between the transponder’s head
and the ship’s transducer.
The transponder requires anchor-weight/brackets to hold the
transponder securely in position on the seabed / ROV.
Refer to Auxiliary equipment on page 89.
Release mechanism
The transponder release mechanism must be attached to a
shackle. The shackle will ensure a smooth release of the
transponder when requested by the operator station.
Ready for operation
Once deployed, the transponder is ready for operation. The
sensors in your application will respond to requests from the
HPR / HiPAP system, when they are enabled using telemetry.
Positioning of a transponder
Positioning of a transponder can be done in two ways:
1 The normal way is that the topside sends a request to the
transponder and then the transponder answers the request
after a given time delay.
2 The other way is with the transponder in beacon mode -
the transponder acts as an acoustic lighthouse by
transmitting pulses regularly (with a given Pulse
Repetition Interval) without being interrogated.
For more information, refer to the APOS on-line
help.
42 160820/O