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8

   

   

 

 

To switch between 2 options – single short closing of wet contacts.  

Upon  choosing  the  calibration  option  mode  close  wet  contacts  for  1 
second to start calibration process.  

Upon  this  indicator  will  intensely  flash,  and  calibration  process  will 
start.  Upon  successful  calibration  HUD-A  will  automatically  switch  to 
PO2  indication  mode  and  store  the  calibration  coefficients  in  a 
nonvolatile memory.  

 

7. 

Joint operation with 

AV

1

F

 

and

 

AV

1

eCCR

 

   

HUD-A has 2 separate independent LEDs (red and green) to connect 
the device as a common dependent HUD. There indicators does not 
depend  either  on  HUD-A  electronics  or  on  the    inside,  and  are 
managed exclusively by the external dive computer. 

ATTENTION! IMPORTANT! 

 

HUD-A  does  not  have  pressure  sonsor.  Calibration  is  done 
based  on  the  assumption  that  ambient  pressure  is  equal  to 
1,000  mbar.  When  calibrating  is  done  in  high-altitude 
conditions or at low ambient pressure, PO2 indications will be 
higher as pro rata. 

When  calibrating  at  ambient  pressure  equal  more  than  1,000 
mbar, PO2 indications will be higher as pro rata. 

Take into account this information when planning your dives! 

 

Содержание HUD-A

Страница 1: ...HUD A HEADS UP DISPLAY MANUAL revision 1 2015 2015 ...

Страница 2: ...CONTENTS 1 INTRODUCTION 3 2 TECHNICAL CHARACTERISTICS 3 3 TECHNICAL DESIGN 4 4 SWITCHING ON AND START OF WORK 4 5 PO2 DISPLAY MODE 5 6 CALIBRATION 7 7 JOINT OPERATION WITH AV1F AND AV1ECCR 8 8 STORAGE 10 ...

Страница 3: ...re pressure 2 Technical characteristics Number of measuring channels indication 3 PO2 measurement accuracy 0 1 bar Indication 3 channels with 5 LEDs each Independent indication 2 LEDs red and green with connection to AV1f or AV1eCCR Battery AAA battery 1 5V Uninterrupted operation duration not less than 100 hours Tested depth 250 meters Calibration air or oxygen Operation temperatures range 10С 45...

Страница 4: ...ve display 1 and insert AAA battery 1 5V into the slot mind the polarity Ensure that sealing O rings 4 are clean and are not damaged Lubricate them with a thin layer of silicone grease prior to placing the protective display back HUD A will automatically switch on and internal testing will start upon inserting the battery In case of successful testing all indicator LEDs will flash three times ...

Страница 5: ...ore switching off the device will warn about this with intense LEDs flashing To switch the device from sleeping mode it s recommended to close wet contacts 2 with any metallic subject or by a wet finger In underwater mode HUD A will also immediately switch on 5 PO2 display mode Matrix of 3 columns with 5 LEDs each is used to display PO2 in HUD A Each LED can either beam uninterruptedly or flash wi...

Страница 6: ...0 45 0 65 Low red is glowing Yellow is glowing 0 65 0 75 Yellow is glowing 0 75 0 85 Yellow is flashing 0 85 0 95 Yellow is glowing Blue is glowing 0 95 1 05 Blue is glowing 1 05 1 15 Blue is flashing 1 15 1 25 Blue is glowing Green is glowing 1 25 1 35 Green is glowing ...

Страница 7: ...possibly you will not succeed from the first trial Try several times This procedure is designed on purpose to avoid any possibility of calibration mode switch on by mistake when swimming on surface When switching calibration mode on HUD A will display one of two calibration options by air or by oxygen In case of choice of calibration by air figures 2 and 1 will alternatively flash with 2Hz frequen...

Страница 8: ...te independent LEDs red and green to connect the device as a common dependent HUD There indicators does not depend either on HUD A electronics or on the inside and are managed exclusively by the external dive computer ATTENTION IMPORTANT HUD A does not have pressure sonsor Calibration is done based on the assumption that ambient pressure is equal to 1 000 mbar When calibrating is done in high alti...

Страница 9: ...ATTENTION IMPORTANT When connecting HUD A to the rebreather it is strongly forbidden to cut off sealed cable end 3 This cable end is an integral part of HUD A Its damage can affect the device operation and put HUD A out of order ...

Страница 10: ...10 8 Storage With long intervals of usage it is recommended to take the battery off to avoid complete discharge and electrolyte leakage ...

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