Download
Share
Print this page
Sonardyne 7986 Operating Manual
  1. Manuals
  2. Brands
  3. Sonardyne Manuals
  4. Marine Equipment
  5. 7986
  6. Operating manual

Sonardyne 7986 Operating Manual

Lightweight release transponder
Hide thumbs

Advertisement

Quick Links

Download this manual
Head Office
Sonardyne International Limited
Blackbushe Business Park
Yateley, Hampshire
GU46 6GD United Kingdom
T. +44 (0) 1252 872288
F. +44 (0) 1252 876100
E. support@sonardyne.com
www.sonardyne.com
OM-7986
Operating Manual for
Type 7986 Lightweight
Release Transponder (LRT)

Advertisement

loading
Need help?

Need help?

Do you have a question about the 7986 and is the answer not in the manual?

Questions and answers

Related Manuals for Sonardyne 7986

Summary of Contents for Sonardyne 7986

  • Page 1 OM-7986 Operating Manual for Type 7986 Lightweight Release Transponder (LRT) Head Office T. +44 (0) 1252 872288 Sonardyne International Limited Blackbushe Business Park F. +44 (0) 1252 876100 Yateley, Hampshire E. support@sonardyne.com GU46 6GD United Kingdom www.sonardyne.com...
  • Page 2 S O N A R D Y N E I N T E R N A T I O N A L L I M I T E D Blackbushe Business Park Yateley Hampshire GU46 6GD United Kingdom Tel: (0) 1252 872288 Fax: (0) 1252 876100 Email : support@sonardyne.com...

  • Page 3: Maintenance

    Rope Canister Specifications Large Rope Canister Specifications DRAWINGS LRT Outline Drawing Release Nut Manufacturing Drawing Rope Canister Outline Drawing Large Rope Canister Outline Drawing SPARES LIST Rope Canister APPENDIX Address/Frequency Group Conversion Table Fig.1 – Type 7986 Lightweight Release Transponder (LRT)
  • Page 4 Additional parameters for “Max Listening Life” CN 9006 21.02.07 Amendment to stock code for shackle in Section 6 - CN 9306 24.09.08 Add Tilt indication version 7986-000-06 1, 2 4, 7, 10 CN 9937 21.07.09 New pictures & rope canister details CN 10328 21.11.10...
  • Page 5 LRT. The 7986-000-06 version of the LRT is fitted with a Tilt indication feature, see label. The ranging behaviour changes if the unit is tipped more than 30 degrees from vertical, as it will...

  • Page 6: Operation

    OPERATION 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 –...
  • Page 7 OM-7986 Page 6 of 23 Issue A - Rev 8 With a waterproof and scratch-proof label or pen mark the acoustic identity clearly on the housing of the LRT. Make a permanent note of the transponder identity (& serial number if required) on file with the associated GPS drop position.
  • Page 8 OM-7986 Page 7 of 23 Issue A - Rev 8 Fig.3 – Loading the release nut into the release mechanism WARNING – Ensure the nut is not engaged at an angle as this may cause the nut to cross- thread causing damage, replace the nut if this happens. If the nut becomes cross-threaded during loading the release mechanism may current-limit and stop before the nut bottoms against the endcap.
  • Page 9 OM-7986 Page 8 of 23 Issue A - Rev 8 To release the LRT, simultaneously press and hold down for >1 seconds the PROGRAM and BATTERY/LOAD buttons. ‘EnbL’ will be displayed indicating the transponder will be enabled. The first unique release command will then be sent to the transponder. If the transponder receives the command it will reply and the range in metres will be displayed and a beep heard.
  • Page 10 Safe Working Loads The Type 7986 LRT has a Safe Working Load (SWL) of 125kg. This is defined as the maximum recommended working load. This is set as a quarter (1/4) of the Breaking Load and allows for factors such as corrosion, fatigue, shock loads, harmonic loads, manufacturing and material variations.
  • Page 11 OM-7986 Page 10 of 23 Issue A - Rev 8 NOTE – Strong tides or currents acting on the instrument mooring or sub-surface floats can significantly increase the in-line load due to drag. This has the effect of increasing the release load on the LRT and therefore could affect the operation of the unit.
  • Page 12 OM-7986 Page 11 of 23 Issue A - Rev 8 Again select the correct acoustic identity on the surface unit and deploy the remote transducer. Simultaneously press and hold down for >1 seconds the PROGRAM and BATTERY/LOAD buttons. ‘EnbL’ will be displayed indicating the transponder will be enabled. The first unique release command will then be sent to the transponder.
  • Page 13 OM-7986 Page 12 of 23 Issue A - Rev 8 Remove the clip and pin holding the nut into the rope canister assembly, shown in picture below. Load the nut as detailed in section 2.4, ensure the correct orientation of the nut.
  • Page 14 OM-7986 Page 13 of 23 Issue A - Rev 8 After use in the sea ensure that the rope is washed through with fresh water and repacked. NOTE: the rating of the rope is degraded by long-term exposure to UV light.
  • Page 15 OM-7986 Page 14 of 23 Issue A - Rev 8 MAINTEINANCE Battery Changing The battery packs can be changed in the field without any specialist equipment. Ensure that a clean dry environment is available when disassembling the unit. Unscrew the two stainless steel M3 counter-sunk screws fitted to the release endcap by approximately 7mm.
  • Page 16 OM-7986 Page 15 of 23 Issue A - Rev 8 Fig.10 – View of internal assembly : Inner pressure housing, foam packed PCB (battery connection on left, transducer connection on right) and battery pack (partly slid out) NOTE – Lithium battery packs are required by law to be disposed of correctly.
  • Page 17 OM-7986 Page 16 of 23 Issue A - Rev 8 Fig.11 - Top : Battery pack Middle : Release mechanism endcap (with foam retaining ring) Bottom : Transducer endcap (with foam retaining ring) General Maintenance Periodically remove the inner transponder assembly to reveal the anodised aluminium pressure housing.

  • Page 18: Specifications

    OM-7986 Page 17 of 23 Issue A - Rev 8 SPECIFICATIONS LRT Specifications Size 63mm Dia x 490mm Long Weight in Air 1.75 kg 0.4 kg Weight in Water 500 metres Depth Rating Construction Materials Plastics / 316 Stainless steel / Aluminium Alloy...
  • Page 19 OM-7986 Page 18 of 23 Issue A - Rev 8 Standard Rope Canister Specifications (with combined LRT assembly) Size Overall Length 530mm Canister Length 395mm 90mm Canister Diameter 158mm Max Width Weight in Air 3.7 kg Weight in Water 0.75 Kg...
  • Page 20 OM-7986 Page 19 of 23 Issue A - Rev 8 DRAWINGS LRT Outline Drawing Release Nut Manufacturing Drawing...
  • Page 21 OM-7986 Page 20 of 23 Issue A - Rev 8 Standard Rope Canister Outline Drawing (75m) Large Rope Canister Outline Drawing (120, 160m)

  • Page 22: Spares List

    OM-7986 Page 21 of 23 Issue A - Rev 8 SPARES LIST Description Type No. Alkaline Battery Pack 10 Cell (15V) 7815-127 641-2414 Standard Lithium Battery Pack 2 x 4 Cell (14V) 7835-007 640-8515 Long-Life Lithium Battery Pack TX & RX (14V)
  • Page 23 Address/Frequency Group Conversion Table Sonardyne’s Type 7797 Homer-Pro and Type 7832 ROV-Homer systems operator with a shortened form of the acoustic identities that the Type 7986 LRT and Type 7815 transponders operate on. There are also fewer acoustic identities available to the Homer systems, see the conversion table below.
  • Page 24 OM-7986 Page 23 of 23 Issue A - Rev 8 Coastal / RovTrak / Prospector systems: Address/Frequency Conversion Table. Rov-Trak, Address Reply Prospector Frequency Code...
  • Page 26 Head Office Sonardyne International Limited T. +44 (0) 1252 872288 Blackbushe Business Park F. +44 (0) 1252 876100 Yateley, Hampshire E. support@sonardyne.com www.sonardyne.com GU46 6GD United Kingdom...