OM-7986
Page 5 of 23
Issue A - Rev 8
2.
OPERATION
2.1
Initial Checks
On receipt of the LRT from Sonardyne the unit will be in a fully working condition, with the
internal battery pack fitted and the unit on, unless special shipping regulations dictate that the
battery pack is shipped separately. If the battery pack has been shipped separately then
refer to section 3.1 – Battery Changing.
2.2
Programming
The unit will be programmed to the default acoustic identity which is Address 005 Reply 5
(51). Unless the default identity is to be used you will need to program the unit to an identity
of your choice, ensure that the same identity is not already in use with other LRTs that you
have or that are operational within the area.
To program the transponder use the Type 7967 Surface Unit, select the interrogation address
(1 to 401) and then the reply code/frequency (1 to 9). Place the programming loop around
the black transducer as shown below and press the PROGRAM button. The surface unit will
program and then test the transponder, it will display
PASS
and beep once to confirm
successful programming.
FAIL
will be display and no beep will be heard if unsuccessful. An
additional test can be carried out by pressing the TEST button.
NOTE -
if the LRT has the Tilt feature fitted, every other Program operation will give a FAIL
reply if the unit is tilted beyond 30 degrees.
Follow the instructions in the OM-7967 Manual or the short-form instruction sheet inside the
lid of the box.
The programmed acoustic identity is stored in non-volatile memory, therefore if the battery is
disconnected for any period of time the programmed identity is not lost.
INCORRECT
CORRECT
Fig.2 – Programming loop attached around the transducer
NOTE
- For use with Sonardyne’s Homer-Pro and/or ROV-Homer system address groups
004 to 013 only should be used, all reply frequencies (81 unique IDs). See Appendix 7.1.
You can only program the transponder using the loop not the remote transducer. This
interlock ensures that no transponders already deployed in the water are accidentally
programmed.
