IXSEA TT801 User manual

TT801
Remote Control System
User Guide

Remote Control System TT801 – User Guide
MU-TT801-AN rev.6 September 2009
i
Copyright
© 2009, IXSEA, France. All rights reserved. No part of this guide may be
reproduced or transmitted, in any form or by any means, whether electronic, printed
manual or otherwise, including but not limited to photocopying, recording or
information storage and retrieval systems, for any purpose without prior written
permission of IXSEA.
Disclaimer
IXSEA specifically disclaims all warranties, either express or implied, included but
not limited to implied warranties of merchantability and fitness for a particular
purpose with respect to this product and documentation. IXSEA reserves the right
to revise or make changes or improvements to this product or documentation at any
time without notifying any persons of such revision or improvements.
In no event shall IXSEA be liable for any consequential or incidental damages,
including but not limited to loss of business profits or any commercial damages,
arising from the use of this product.
Trademarks
Microsoft, MS-DOS and Windows are registered trademarks of Microsoft
Corporation. Intel and Pentium are registered trademarks and Celeron is a
trademark of Intel Corporation.

Remote Control System TT801 – User Guide
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Overview of the TT801 User Guide
This document is the User Guide for IXSEA’s TT801. It must be read and understood prior
to using the TT801 system.
The manufacturer shall in no case be held liable for any application or use that does not
comply with the stipulations in this guide.
The TT801 User Guide is divided into four parts:
• Part 1: Introduction
This document contains a general description of TT801. Details on warranty, IXSEA
contacts and technical support are also given.
• Part 2: Installation
This document gives the recommendations and the procedures to install the TT801
system.
• Part 3: Operation
This document provides the full description of TT801 operation.
• Part 4: Maintenance
This document provides the preventive and corrective maintenance for the TT801. It gives
some clues as regards troubleshooting.
The abbreviations and acronyms used in this guide are listed hereafter.
A Table of Contents is available in the following pages to allow a quick access to
dedicated information.

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Abbreviations and Acronyms
CAF Common Acknowledgement Frequency
CIF Common Interrogation Frequency
CRF Common Reply Frequency
FR1 Reception frequency number 1 (for RT6xx)
FR2 Reception frequency number 2 (for RT6xx)
FSK Frequency Shift Keying
FT0 Transmitted Frequency number 0 (the same than CAF)
FT1 Frequency response to FR1 (the same than CIF)
FT2 Frequency response to FR2 (the same than IIF)
FT4 Transmitted Frequency number 4 (the same than PFR)
IIF Individual Interrogation Frequency
IRF Individual Reply Frequency
MFSK Multi-Frequency Shift Keying
MSB Most Significant Bit
NA Not Applicable
PFR Pinger FRequency

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Table of Contents
COPYRIGHT .............................................................................................................................I
DISCLAIMER ............................................................................................................................I
TRADEMARKS..........................................................................................................................I
OVERVIEW OF THE TT801 USER GUIDE ..................................................................................II
ABBREVIATIONS AND ACRONYMS ..........................................................................................III
TABLE OF CONTENTS ............................................................................................................IV
IINTRODUCTION ................................................................................................................ 1
I.1 Object ....................................................................................................................................... 1
I.2 Verification of the TT801 Pack Contents .............................................................................. 1
I.3 TT801 Overview....................................................................................................................... 1
I.4 Acoustic Remote Control Principles..................................................................................... 2
I.5 TT801 Components............................................................................................................... 10
I.5.1 Physical Description........................................................................................................... 10
I.5.2 Functional Description ....................................................................................................... 13
I.6 Mechanical/Environmental Characteristics ....................................................................... 14
I.6.1 Cabinet............................................................................................................................... 14
I.6.2 Dunking Transducer........................................................................................................... 14
I.6.3 Shipping ............................................................................................................................. 14
I.6.4 Environmental Conditions.................................................................................................. 14
I.7 Electrical Characteristics ..................................................................................................... 15
I.7.1 Front Panel Features ......................................................................................................... 15
I.7.2 Connectors......................................................................................................................... 15
II INSTALLATION ............................................................................................................... 17
II.1 Object ..................................................................................................................................... 17
II.2 Handling................................................................................................................................. 18
II.3 Storage................................................................................................................................... 19
II.4 General Recommendations ................................................................................................. 20
II.5 Getting Started with the TT801 ............................................................................................ 21
II.5.1 Installing the Connections.................................................................................................. 21
II.5.2 Installing the Acoustic Transducer..................................................................................... 21

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II.5.3 Powering the TT801 .......................................................................................................... 22
III OPERATION ................................................................................................................... 23
III.1 Object..................................................................................................................................... 23
III.2 Battery.................................................................................................................................... 24
III.3 TT801 Menus Overview ........................................................................................................ 24
III.4 Configuring the Transmission/Reception Parameters ..................................................... 27
III.4.1 Definitions .......................................................................................................................... 27
III.4.2 Configuring the Tx/Rx Parameters Without Saving the Configuration .............................. 31
III.4.2.1 Monochromatic Transmission/Interrogation Case (RT/ET6xx, RT/ET8xx, RT9xx) 31
III.4.2.2 FSK Transmission Cases 33
III.4.3 Loading a Pre-Programmed Configuration........................................................................ 37
III.4.4 Saving a New Configuration .............................................................................................. 38
III.4.4.1 Monochromatic Transmission/Interrogation Case (RT6xx, RT8xx, RT9xx) 38
III.4.4.2 FSK Transmission Cases 40
III.4.5 Case of the Pressure Measurement.................................................................................. 43
III.4.6 Case of the Pressure Measurement.................................................................................. 44
III.5 Transmission and Data Reception Display........................................................................ 46
III.6 Activating the Release..........................................................................................................48
III.7 Activating the Pinger Frequency Detection ....................................................................... 49
III.8 Activating the Options..........................................................................................................50
III.9 Using the Serial Link ............................................................................................................ 51
III.9.1 Principle ............................................................................................................................. 51
III.9.2 Serial Link Parameters ...................................................................................................... 51
III.9.3 Message Structure............................................................................................................. 51
III.9.3.1 Transponder Command Type 52
III.9.3.2 Remote Control Unit Command Type 53
IV MAINTENANCE ............................................................................................................... 54
IV.1 Object..................................................................................................................................... 54
IV.2 Routine Maintenance............................................................................................................ 54
IV.3 Corrective Maintenance ....................................................................................................... 58
IV.4 Troubleshooting.................................................................................................................... 64
WARRANTY ......................................................................................................................... 65
CUSTOMER SUPPORT .......................................................................................................... 66
CONTACT ............................................................................................................................ 67
APPENDICES........................................................................................................................ 68

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A. TECHNICAL SPECIFICATIONS .......................................................................................... 68
A.1POWER SUPPLY............................................................................................................. 68
A.2SINGLE PULSE TRANSMISSION ....................................................................................... 68
A.3COMMAND CODES ......................................................................................................... 68
A.4FRONT PANEL FEATURES .............................................................................................. 70
B. FREQUENCY TO DIGIT CONVERSION TABLE .................................................................... 71
C. DUNKING TRANSDUCERS ............................................................................................... 72
C.1STANDARD PET801P-30 P/N 9400057......................................................................... 72
C.2OPTIONAL PET661S-TT, P/N 9400051 WITH INTERCONNECT CABLE P/N 9300117 ......... 73
C.3OPTIONAL AM661S ACOUSTIC MODULE, P/N 2809200 WITH INTERCONNECT CABLE P/N
9300102............................................................................................................................. 75
D. EXAMPLES OF BUILD SHEETS ........................................................................................ 77
D.1EXAMPLE OF AR661 BUILD SHEET ................................................................................ 77
D.2EXAMPLE OF RT661 BUILD SHEET................................................................................. 78
D.3EXAMPLE OF AR861 BUILD SHEET ................................................................................ 80
D.4EXAMPLE OF RT861 BUILD SHEET................................................................................. 82
D.5EXAMPLE OF AR701 BUILD SHEET ................................................................................ 84
GENERAL INDEX .................................................................................................................. 166H85

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I INTRODUCTION
I.1 Object
This part is the introduction to the TT801 user manual. It contains the description of the
TT801 system, of its components, some principles about acoustic remote control,
warranty, IXSEA contacts and, technical support.
I.2 Verification of the TT801 Pack Contents
You have just received your equipment in a wooden transit case. Before starting the
installation, we recommend to check the contents of the pack and the equipment
immediately on receipt of your TT801 System. Specifically, you should check that all
items are present on delivery and that none has sustained damage.
For that, you will find in the shipping case a packing-list detailing all the shipped items.
This packing list had been completed and checked for by IXSEA shortly before shipment.
Caution
ON RECEIPT OF THE EQUIPMENT, ITS OVERALL CONDITION SHOULD BE CHECKED AND IXSEA
INFORMED OF ANY DAMAGE SUFFERED DURING THE LOADING OPERATIONS.
IT IS HIGHLY RECOMMENDED TO CONTACT THE INSURANCE COMPANY IN CASE DAMAGE IS FOUND.
I.3 TT801 Overview
The TT801 is a low frequency (8 – 16 kHz) transmitter system of coded acoustic signals to
remote control the operating modes of Acoustic Releases and/or Recoverable
Transponders. It uses a highly secure and reliable FSK telemetry link in the LF frequency
range.
TT801 features also a ranging function to help in relocating and monitoring the operation
of the subsea Acoustic Releases and Transponders.
The TT801 remote control deck set is a portable unit equipped with a Lead-Acid battery. It
can be feed with a continuous or alternative external power source. This external power
also allows the charge of internal rechargeable batteries.
It is particularly dedicated to transmission of:
• Acoustic release orders towards AR701AE Shallow Water Acoustic Releases
• Remote control of acoustic codes towards RTxx1 and ARxx1 series
• Single Interrogation pulses to OCEANO Transponders
The receiver section can process:
• Acknowledgement signals of remote control codes
• Information of range and elapsed time
• Telemetry data (Verticality and / Battery voltage of AR/RT800 and RT600 series)
Transmission
Reception

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The main features are:
• Portable
• Range in excess of 10,000m in good environmental conditions
• Display of data and functions on Liquid Crystal Module
• Audio indication during the configuration
• Secure FSK coded commands for absolute multi-path protection
• Receiver of MFSK (Wide-spread spectrum) and Monochromatic (Tonal) signals
• Functions: Rangemeter / Pinger receiver / Telemetry / Audio listening
• Over 30,000 single codes (65,000 couples of codes for AR 701 AE units)
• Internal rechargeable battery and built-in charger
• 115-230V AC Mains power supply
• 24V DC external power supply
I.4 Acoustic Remote Control Principles
Depending on the target (acoustic release or release transponders see Table 1 and Table
2), the TT801 can transmit
• Single tonal pulse for interrogation: Release transponders are generally fitted with
two-factory set interrogation frequencies (Individual Interrogate Frequency or
Common Interrogate Frequency) ranging from 8.5 to 16 kHz (with 500 Hz steps).
The Release Transponder (if ‘ENABLE’) replies after a turn-around time by sending
an acoustic pulse (Common Reply Frequency or Individual Reply Frequency)
• Encoded commands to monitor the operation of Acoustic Release or Release
Transponders. IXSEA technique is a FSK-2 states command burst using 8-bit
words with 2-state coding. Logical bits ‘0’ and ‘1’ are coded with two different carrier
frequencies.
Depending on the target, the transmitted acoustic command may consist of a unique
“DIRECT” sequence (single 8-bit word) or an “ARM & EXECUTION” sequence (two 8-bit
word burst, the ARM code being equivalent to the address of the commanded subsea
unit).
When a command word has been decoded, the AR/RT OCEANO subsea unit transmits
an acoustic Acknowledgement pulse. With some commanded functions, the subsea unit
transmits a second Acknowledgement pulse when the operation is complete. If the
‘DIAGNOSTIC” command was sent, the reply also includes a data using a Pulse-to-Pulse
Time Modulation technique. TT801 detects in sequence the acknowledgment pulses and
the result / message is posted up on the LCD display.
Main features
Transmission

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Table 1 – Correspondence between the ‘Interrogate’ or ‘Reply’ frequency names and targets
For: OIAR701 OIRT6x1 OIAR6x1 OIRT8x1 OIAR8x1 OIRT9xx OIAR9xx
Individual
Interrogation
frequency name
NA FR2 NA IIF NA IIF NA
Common
Interrogation
frequency name
NA FR1 NA CIF NA CIF NA
Individual Reply
frequency name
NA FT1 NA IRF NA IRF NA
Common Reply
frequency name
NA FT2 NA CRF NA CRF NA
Common
Acknowledgement
Frequency name
NA FT0 FT0 CAF CAF CAF CAF
Pinger Frequency NA FT4 NA PRF PRF PRF PRF
Other
Acknowledgement
frequencies
NA FT5, FT7
generally
set to FT0
NA NA NA NA NA
The main commands supported by the different generations of OCEANO Acoustic
Releases and Release Transponders are listed hereafter:
• ARM: it precedes the commands/orders for OCEANO AR701AE, AR/RT/ET800,
AR/RT/ET900 series and operates like a unique address
• RELEASE: Used with AR/RT 600 series, OCEANO AR/RT 800 and OCEANO
AR701AE to activate the release operation
• DIAGNOSTIC: Used with RT600, OCEANO AR/RT800 and AR/RT900 series to ask
for information about the verticality and battery voltage of the acoustic release.
• INT/RANGE: Used with AR600 series to measure distance from surface to the
acoustic release.
• WINDOW: Possible use with RT600 series and may precede some RT600 series
commands/orders requiring an ARM & EXECUTION sequence. It operates like a
unique address and provides the same action as the ARM command. It allows
range measurement by sending the WINDOW command
• ON FR1-FR2: Used with RT600 series to enable FR1 and FR2 Transponder
channels.
• OFF FR1-FR2-PINGER: Used with RT600 series to disable FR1 and FR2
Transponder channels and Pinger mode

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• ON FR1-OFF FR2: Used with RT600 series to enable FR1 and disable FR2
Transponder channels.
• ON FR2-OFF FR1: Used with RT600 series to enable FR2 and disable FR1
Transponder channels.
• PINGER: Used with RT600 series to activate the Pinger emission
• PINGER ON: Used with OCEANO AR/RT/ET800 and AR/RT900 series to activate
the Pinger emission and disable the Transponder mode
• ARM/RANGING: Allow ranging (distance measurement) on OCEANO AR/RT800
series by sending an ARM single remote control code or a dual ARM & ARM
sequence
• RELEASE with PINGER: Used with OCEANO AR/RT800 and AR/RT900 series
with PINGER: to activate both the release and the pinger emission upon completion
of release operation
• TRANSP. IIF TRANSP.CIF: Used with OCEANO RT/ET800 and RT900 series to
enable IIF and CIF Transponder channels.
• INHIBITION IIF CIF: Used with OCEANO RT/ET800 and RT900 series to disable
IIF and CIF Transponder channels.
• TRANSP. IIF INHIB CIF: Used with OCEANO RT/ET800 and RT900 series to
enable IIF and disable CIF Transponder channels
• TRANSP. CIF INHIB IIF: Used with OCEANO RT/ET800 and RT900 series to
enable CIF and disable IIF Transponder channels
• PINGER OFF: Used with OCEANO AR/RT/ET800 and AR/RT900 series to disable
and to stop the pinger emission.
• ACOUSTIC RESET: Used with OCEANO RT/ET800 and RT900 series. It restores
the transponder default configuration of the OCEANO RT/ET800 and RT900 series.

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Table 2 - Supported commands with respect to targets
Target ARM code ACK Freq Supported Commands ACK Freq.
AR 701 AE Yes No
RELEASE No
RT6x1 Yes or No:
Individual choice
per command
depending on
factory set-up
If ARM (FT0)
If No ARM, NA
WINDOW
ON FR1-FR2
OFF FR1-FR2-Pinger
RELEASE 1
DIAGNOSTIC
ON FR1-OFF FR2
ON FR2-OFF FR1
PINGER
(FT0)
(FT0)
(FT0)
(FT0 and FT5)
(FT0 and FT7)
(FT0)
(FT0)
(FT0 then FT4)
RT8x1
RT9x1
Yes CAF ARM/RANGING
RELEASE
RELEASE WITH
PINGER
TRANSP.IIF
TRANSP.CIF
INHIBITION IIF CIF
TRANSP.IIF INHIB.CIF
TRANSP.CIF INHIB.IIF
PINGER ON
PINGER OFF
DIAGNOSTIC
ACOUSTIC RESET
(CAF)
(CAF & CAF)
(CAF & CAF then
PFR)
(CAF)
(CAF)
(CAF)
(CAF)
(CAF then PFR)
(CAF)
(CAF and CAF)
(CAF)
AR6xx No NA INT/RANGE
RELEASE
(FT0)
(FT0)
AR8xx AR9xx Yes (CAF) ARM/RANGING
RELEASE
RELEASE WITH
PINGER
PINGER ON
PINGER OFF
DIAGNOSTIC
(CAF)
(CAF & CAF)
(CAF & CAF then
PFR)
(CAF then PFR)
(CAF)
(CAF and CAF)

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Each of the commands defines above have a code number to enter in the TT801. These
code numbers can be found in the provided build sheet of your target (see Appendix C).
OCEANO AR/RT/ET800, AR/RT900 and AR701 series are always triggered using a dual
word command (ARM and EXECUTION sequence).
AR600 series are always triggered using a single command word (direct command).
RT600 series are usually triggered using a single command word. However some
commands can be individually to a dual word command (WINDOW/ARM and
EXECUTION sequence). The factory set dual word commands are identified by the “(W)”
note on the build sheet.
In the same way, each target has its own interrogation frequencies, type of recurrence,
which you have to enter in your TT801. You can find this information in the provided build
sheet of your target (see Appendix C).
Depending on the target,
• The Remote control TT801 receives acknowledgement (CAF for the AR/RT/ET800,
AR/RT900 series or FT0 for AR/RT600 series) from the target or not.
• The Remote control TT801 receives some verticality, battery power and/or distance
information.
• The Remote control TT801 is also able to detect the acoustic transmission of free
running Pinger and to display the Pinger transmission rate.
Reception

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Relocation example: Range measurement using Transponder mode (Single pulse)
RT8x1 case
1. TT801 sends a pulse IIF to interrogate a Recoverable transponder (RT).
2. Assuming the transponder channels are active (ENABLE IIF-CIF), the RT will detect
the IIF interrogation signal and transmit in turn a reply pulse with the turn around
delay time.
3. TT801 receives a CRF pulse (M-FSK or Tonal code) and displays the range to the
RT.
Figure 1 – Relocation example, ranging by a single pulse

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Relocation example: ‘Ranging’ after remote control interrogation
AR8x1 case
1. Set up TT801 to execute ARM & ARM operation with suitable ARM command code
and reception parameters.
2. Activate the operation. TT801 transmits once the ARM code.
3. Upon detection of its ARM code, AR8x1 unit transmits an acknowledgement pulse
(CAF).
4. TT801 detects CAF pulse and the distance in meters between TT801 and AR8x1.
5. TT801 transmits the second ARM code (Ranging) and the AR8x1 replies in turn by a
second CAF pulse, which is also used to measure the distance.
Figure 2 – Relocation example, ranging after interrogation

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Mooring Recovery Operation: ‘Release + Pinger’ command sending example
AR8x1 or RT8x1 case
1. Prior sending any release command, it is strongly recommended to relocate the
Acoustic Release (AR800 series for example) by sending RANGING or Diagnostic
command.
2. Set up TT801 to execute ‘Release+Pinger’ operation with suitable
ARM+’Release+Pinger’ command codes and reception parameters
3. Activate the command transmission. TT801 transmits once the ARM code.
4. Upon detection of its ARM code, AR8x1 unit transmits an acknowledgement pulse
(CAF).
5. TT801 detects CAF pulse and the distance in meters between TT801 and AR8x1.
6. TT801 transmits the ‘Release+Pinger’ code. Upon receipt of this command, the
AR8x1 replies in turn by sending a second CAF pulse, which is also used to measure
again the distance.
7. Upon completion of the rotor rotation, the release hook opens and AR8x1 transmits a
CAF pulse to confirm execution of release operation.
8. In addition, as pinger mode has been specified, AR8x1 switches to Pinger operation
for 3 minutes time: AR8x1 transmits PFR acoustic pulses at a rate (default is 5 s) at
Pinger Frequency.TT801 detects these PFR pulses and displays the Pinger rate.
Figure 3 – Relocation example, release and pinger operation

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I.5 TT801 Components
I.5.1 PHYSICAL DESCRIPTION
The TT801 unit is supplied as standard with the following accessories (see Figure 4):
• One dunking transducer PET 801 P-30 with 30m long interconnect cable
• One 115-230V AC power cord (2m or 2.5m long depending on standard)
• One 24V DC power cord (2.5m long)
• Audio headphones with associated lead
• One user manual
• One factory approval form (F.A.T.)
Figure 4 - TT801 System Components
The TT801 unit is supplied as standard with the standard dunking transducer PET 801 P-
30 with 30m long interconnect cable (as seen in Figure 5).
But, if needed, the following options are available:
• Reinforced transducer PET 661S-TT (pp/n 9400051): Associated to its cable p/n
9300117 (30m long), the PET661S-TT transducer is equivalent to the PET801P-30
standard dunking transducer.
Figure 5 - Reinforced transducer PET 661S-TT
Standard
Optional
Features

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• Acoustic Module AM 661S + 100m long cable on hand reel (P/N 9300102): Use of
AM661S Acoustic module is recommended in poor acoustic propagation conditions,
in noisy environment or when long cables are required between TT801 cabinet and
Dunking Transducer. AM661S use is recommended when the sound velocity profile
presents strong gradients near the surface (as it exists in the tropical and equatorial
waters for example). Long cable helps also in reducing the impact of vessel noise
environment by getting the AM661S as far away as possible from thrusters or
propellers.
Figure 6 - Acoustic Module AM661S (with integral transducer on the left, with remote transducer on the
right)
This feature helps to give an audio indication of sonar signal reception. Acoustic
frequencies received by the dunking transducer are converted into 0-8 kHz audio
frequencies. Headphones enable to listen to the acoustic signals in the seawater
specifically the CAF Acknowledgements pulses or the PFR pulses when the Pinger mode
is activated.
The TT801 front panel is described in Figure 7.
Audio
headphones
TT801 Front
Panel

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Figure 7 - TT801 Front panel
• Command/Data Display: Functions, messages and data are displayed on a 16
lines ×20 characters Liquid Crystal Module. Backlight option makes the reading of
data easier in bad visibility conditions.
• LED indicators: There are 3 LED indicators on the front panel:
 AC/DC (yellow) lights on as soon as the TT801 is connected to AC Mains or
24V external power supply
 LOW (red) lights on when battery is in low charge state
 ON (green) light on as soon as the power switch is activated to power on the
TT801 cabinet
• Connectors: Five different types for specific functions:
 XDC to hook up PET801P dunking transducer or PET661S-TT ruggedized
transducer or AM661S acoustic module
 115-230 VAC universal AC power supply input
 24 VDC (range 18 to 36 V) DC power supply input
 RS232/422 serial input/output link
 HEADPHONES (with volume control) for plugging the headset