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ONLINE ELECTRONICS LTD 

2405_5001_A01 

Page 10 of 14 

3.5.

 

SINGLE BUTTON MENU INTERFACE 

 
The  MENU  system  can  be 
entered  from  the  OPERATING 
SCREEN  as  described  in  section 
3.4 OPERATING SCREEN.  
 
While in the MENU system, every 
time the user presses the control 
button  the  CURSOR  will  move 
down 

one 

line 

and 

the 

COUNTDOWN INDICATOR will be 
reset to 5. 
 
Once  the  CURSOR  is  pointing  at 
the desired item the user simply 
allows 

the 

COUNTDOWN 

INDICATOR  to  reach  0  and  the 
selected  item  will  be  executed. 
This  simple  behaviour  is  used 
throughout the menu interface to 
modify settings and interact with 
the 2405 unit.  

 
 
 
 
 
 
 
 
 

3.5.1.

 

EXIT 

 
The first item on every page of the menu system is EXIT. If no other selection is made then 
EXIT  is  selected  by  default  and  the  2405  will  exit  the  menu  system  and  return  to  the 
OPERATING SCREEN. 
 
3.5.2.

 

MANUAL MODE / AGC MODE 

 
This  item  toggles  between  AGC  MODE  (Automatic  Gain  Control)  and  MANUAL  MODE  gain 
control.  It  is  recommended  that  AGC  mode  is  used  during  most  deployments  although  in 
environments  where  the  background  noise  level  is  unstable  it  can  be  advantageous  to  use 
MANUAL  MODE  to  prevent  the  AGC  constantly  changing  gain  in  response  to  variations  in 
background noise levels. See section 3.4 OPERATING SCREEN. 
 
3.5.3.

 

SET TIME / DATE 

 
This  item  allows  the  time  and  date  to  be  adjusted.  Ensure  that  a  valid  time  is  entered  in 
24hour, HH:MM:SS format and a valid date in DD/MM/YY format.  
 
The digit to be edited is indicated by ‘^^’ below the digit. Press the push button momentarily 
until the required value is displayed. Once the correct value for the digit is displayed allow the 
countdown timer to expire and the selection arrows will advance to the next digit. 
 
While setting the seconds field the control button can be held down to freeze the current time 
to help synchronise with a reference time. 
 

 

Summary of Contents for 2405

Page 1: ...n Road Blackburn Aberdeen AB21 0PS UK 44 0 1224 714 714 www online electronics com sales online electronics com ACOUSTIC RECEIVER SELF CONTAINED ROV HELD OPERATING MANUAL The 2405 is a standalone battery powered acoustic receiver system which can be used by an ROV for tracking and locating underwater acoustic pingers ...

Page 2: ...001 Checked IF APPLICABLE Date IF APPLICABLE Approved Date Rev Date By Summary of change A00 11 08 17 BG CR00485 Was 2405 ROV ACOUSTIC RECEIVER MANUAL RevA12 CR00380 Address change CR00499 Front cover update A01 06 10 17 BG CR00499 Cover page update COMMENTS ...

Page 3: ...7 3 3 TURNING ON 8 3 4 OPERATING SCREEN 9 3 5 SINGLE BUTTON MENU INTERFACE 10 3 5 1 EXIT 10 3 5 2 MANUAL MODE AGC MODE 10 3 5 3 SET TIME DATE 10 3 5 4 LEDS ON LEDS OFF 11 3 5 5 CONFIGURE 11 3 5 6 SHUTDOWN 11 4 MAINTENANCE 12 4 1 BATTERY REPLACEMENT 12 4 2 2405 O RING REPLACEMENT 13 4 3 ROUTINE MAINTENANCE AND STORAGE 13 5 DISPOSAL OF UNIT 14 6 WARRANTY 14 ...

Page 4: ...are displayed as they are received by the 2405 unit on a 2 7 graphical display and three high brightness LEDs positioned below the display The 2405 system requires no interface other than an ROV camera to observe the received signals on the display The user can turn the unit ON and OFF as well as modify several settings using a single control button and intuitive menu system on the 2405 unit The d...

Page 5: ...AINLESS STEEL Fishtail bracket material 316 STAINLESS STEEL 2405 Housing material ALLOY BRONZE CA104 EN 12163 2405 Endcap material ALLOY BRONZE CA104 EN 12163 2405 Bleedscrew material ALLOY BRONZE CA104 EN 12163 2405 Window material ACRYLIC 2405 Endcap O rings 2x BS 50 243 NBR70 with 2x 250 243 PTFE BURs 2405 Window O rings 1x BS 50 236 NBR70 1x BS 50 237 NBR70 2405 Bleedscrew O ring 1x BS 50 008 ...

Page 6: ...ably it can be positioned in several different positions on the fishtail bracket as required 4 Use the control button to select the expected frequency of the acoustic transmitter 5 It is recommended that AGC gain is selected as per section 3 5 2 MANUAL MODE AGC MODE 6 Select a timebase which will display approximately 5 pulses at the expected repetition rate on the screen as per section 3 4 OPERAT...

Page 7: ...mebase and gain settings entered prior to entering TEST MODE will be saved 3 2 FUNCTION TEST 1 Turn the 2405 ON as described in section 3 3 TURNING ON 2 Ensure the 2405 is in PINGER MODE with AGC gain as per section 3 4 OPERATING SCREEN 3 Activate a test transmitter of known frequency and repetition rate within range of the 2401 hydrophone A range of approximately 5cm should be used if in air 4 Se...

Page 8: ... bottom of the screen in vXX format This screen will be displayed for 5 seconds as shown by the COUNTDOWN INDICATOR at the bottom left corner of the display When the COUNTDOWN INDICATOR reaches zero or the control button is pressed the next screen will appear The next screen shows the TIME DATE see section 3 5 3 SET TIME DATE for more information The unit now completes an INTERNAL CHECK of functio...

Page 9: ...igure the receiver frequency between 8kHz and 50kHz when selected TIMEBASE Allows the operator to set the timebase width of the screen between 3secs and 50secs when selected As shown if the timebase is set to 10 seconds and a pulse is received every 2 seconds then you would expect to see approximately 5 evenly spaced pulses on the screen GAIN If MANUAL gain is selected then this value will have fo...

Page 10: ...EEN 3 5 2 MANUAL MODE AGC MODE This item toggles between AGC MODE Automatic Gain Control and MANUAL MODE gain control It is recommended that AGC mode is used during most deployments although in environments where the background noise level is unstable it can be advantageous to use MANUAL MODE to prevent the AGC constantly changing gain in response to variations in background noise levels See secti...

Page 11: ...e in conjunction with instruction from Online Electronics personnel The FACTORY RESET OPTION can be selected at any time to ensure the unit is using the factory default settings which are adequate for the majority of situations 3 5 6 SHUTDOWN This item switches the unit OFF The unit is fitted with non volatile memory which will remember all settings made via the menu system next time the unit is s...

Page 12: ...ng and detaching the cable connections at the 2405 and 2401 and feeding the cable through the forward hole in the mounting plate so that the mounting plate can be removed without damaging the cable 2 Remove the 4x M8 CAP screws that secure the mounting plate to the frame and remove the mounting plate with 2405 unit and 2401 hydrophone attached being careful not to damage the cable 3 Remove the 2x ...

Page 13: ...e include an internal O ring and BUR Back Up Ring positioned as shown Look into each half of the connector and confirm that the O ring and BUR are in position and are undamaged If these seals are missing or damaged then the system may malfunction when deployed subsea 4 2 2405 O RING REPLACEMENT The 2405 uses the following O rings 1x 50 008 groove in piston bleedscrew O ring 2x 50 243 groove in pis...

Page 14: ...g a new product you will have the possibility to return free of charge another end of life product of equivalent type that has fulfilled the same functions as the supplied equipment These items may be deposited at Online Electronics Ltd Online House Woodburn Road Blackburn Business Park Blackburn Aberdeen AB21 0PS UK Alternatively to arrange a collection of any waste electrical equipment obligated...

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