Flir ThermovisionNavigator II Operators Manual

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JO yS tIck cON trOL U NIt (J cU) 
						

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Jc U d eS cr Ipt ION
ON /OFF
 – turns  the  Navigator  II  on  and  off.  When  the  On/Off 
switch is turned to the On position, 2 FLIR splash screens will display for 
5 seconds each. After this, the infrared image will display, and the system 
is  ready  for  operation.  Note  that  the  Navigator  II  will  still  draw  a  small 
amount of power when off.
J Oy StIck
 –  allows  the  operator  to  control  where  the  Navigator 
II is looking. Move the Joystick to the left or right to rotate the camera in 
the corresponding direction; tilt it forward and back to tilt the camera up   
and down.
d IM
 –  controls  the  brightness  of  the  JCU  panel;  this  control  is  active 
any time power is on. Dimming the control helps to protect the operator’s 
night  vision.  Simply  press  the  button  to  cycle  through  the  four  preset   
brightness levels.
  
HOMe  –  the  Home  position  is  a  user-programmable  set  of  pointing   
angles,  usually  0°-0°  (straight  ahead  and  level  with  the  horizon),  that   
operators  can  use  as  a  reference  and  as  a  rest  position  when  navigating 
for long periods. To set the Home position, use the Joystick to point the   
camera’s  line  of  sight  to  the  position  you  want  to  set  as  “Home,”  press 
and hold the HOME button for 4 seconds, and the Navigator II will save 
this position as Home. (When the Home symbol flashes, the new Home   
position has been saved to memory.) When you want to drive the camera 
to this Home position, press and release the HOME button.  
						

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ZOOM –  toggles  the  2X  zoom  setting  on  and  off.  The  Navigator  II 
Pan/Tilt has a 2X electronic zoom. Press the Zoom button to select and   
de-select this option. A “2X” icon will appear when this control is active . 
S ce Ne
 –  cycles  through  Night  Running,  Day  Running,  Man   
Overboard, or Night Docking settings, which change the brightness and 
contrast	 of	the	 image.	 Varying	 environmental	 conditions	may	make	 one	
setting  more  appropriate  than  the  others  for  a  given  operation.  Experi -
ment with the different settings and choose the one that gives you the best 
image for your conditions. 
Night Running
Man Overboard Day Running
Night Docking 
						

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b/W – toggles between the available image presentation modes: white 
hot,  black  hot,  red  hot,  rainbow  and  fusion.  Hot  objects  appear  white, 
black,  or  red  respectively  depending  on  the  selected  mode.  The  choice 
of  video  image  mode  is  strictly  a  personal  preference,  and  you  should   
experiment to find your preferred mode.
 
Red Hot White Hot
Fusion Rainbow Black Hot 
						

							care a Nd Ma INte NaN ce 
						

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t r OU bLe SHOO tIN g
ca UtION ! 
Do  not  open  the  camera  body  for  any  reason.  Disassembly  of  the  camera 
(including removal of the cover) can cause permanent damage and will void 
the warranty.
The  Navigator  II  is  a  simple  yet  sophisticated  device,  built  to  provide  years 
of  trouble-free  use.  If  you  do  run  into  problems  with  your  Navigator  II,  try 
these simple steps: •	If	 the	 camera	 will	not	produce	 an	image,	 check	the	fuse	 first.	 The	fuse	 is	on	 the 
  main power line in a rubberized cover. Remove the fuse and check to see if   
  it is still intact (see instructions below). If the fuse has blown, determine the 
   cause of the blown fuse, fix the problem, and replace with a 5-Amp fuse. 
•	Check	 the	wiring	 at	both	 the	electrical	 panel	and	at	the	 termination	 to	the 
   JCU. Ensure that the contacts are clean, dry and free from corrosion. Refer   
  to  the  Navigator  II  Installation  Guide  for  proper  wiring  instructions.  If   
  maintenance  on  the  wiring  connection  is  required,  have  an  authorized   
  service representative make the appropriate repairs. 
• 	If 	the 	camera 	still	will 	not	produce 	an	image, 	check	the	video 	connection  
  at the camera and at your display. If the connectors appear to be properly 
  engaged but the camera still does not produce an image, have an authorized 
  service representative make the appropriate repairs.
r ep Lac INg t He  FUS eS
ca UtION !
Replace system fuses with the same value and type provided at the time of 
purchase. Using fuse values other than the ones supplied by FLIR Systems 
may cause permanent damage to the unit and may void the warranty.
To replace the fuse, ensure power is off, remove the fuse from the fuse holder, 
remove the fuse and replace with one of the supplied 5-Amp fuses. 
cL ea NIN g
caUtION ! 
Improper care of the camera window can cause damage to its anti-reflective 
coating,  degrade  the  camera’s  performance,  and  void  the  camera  warranty. 
Clean  the  camera  window  only  with  low-pressure  fresh  water  and  a  soft 
cloth.  If  the  front  window  of  the  camera  gets  water  spots,  wipe  it  with  a 
clean lens cloth folded in fourths and dampened with fresh water.
   
   
						

							FUN da MeN ta LS OF I NFrared 
						

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IN tr O t O INF rared t ecHNOLO gy
The  Navigator  II  detects  differences  in  heat  and  displays  them  as  black  and 
white	TV	video.	 It	may	 look	 like	a	black	 and	white	 version	 of	what	 your	eyes	
see,  but  it’s  not.  The  Navigator  II  sees  heat,  not  light.  The  sooner  you  can 
understand and get comfortable with that difference, the more you will enjoy 
this incredible technology.
Why things look the way they do
The  Navigator  II’s  thermal  imager  makes  video  images  from  differences  in 
heat, not from the light you see every day. It senses the minute differences in 
heat between objects, and (in white hot mode) displays the warmer objects as 
white (or lighter shades of gray), and colder objects as black (or darker shades 
of gray). 
Everything  you  encounter  in  your  day-to-day  existence  gives  off  heat  –  even 
ice! Chances are that the hotter something is, the easier it will be to see. 
While  most  things  give  off  their  own  heat,  some  things  actually  reflect  the 
heat  given  off  by  other  things.  Water  and  polished  metal,  for  example,  aren’t 
as  hot  as  they  appear  when  they  reflect  sunlight,  or  the  heat  generated  by   
other vessels.
What’s  more,  some  things  that  are  the  same  temperature  (or  close  to  it)  look 
different because of their different surface textures.
IR energy doesn’t go through glass or water efficiently, so Navigator II won’t let 
you see well through glass.
Thermal  imagers  are  passive  –  they  only  receive  incoming  energy.  They  don’t 
“see  through”  anything.  While  you  might  think  you  are  seeing  through  a 
vessel ’s hull to see the bulkheads and heat from the engine, you’re not. These 
elements are actually changing the temperature of the hull itself, allowing you 
to see the bulkheads and the hot engine room.
As  you  experiment  with  your  Navigator  II,  you  will  begin  to  see  a  world  of 
heat. Consider every object you view in terms of how it will look “thermally”, 
as opposed to how it looks in the visible spectrum.  
						

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Weather
Environmental conditions, including time of day, humidity, and precipitation, 
will  affect  image  quality  and  contrast.  Fog,  smog  and  rain  will  decrease  the 
range at which you can detect a given target. After sunset, objects warmed by 
the sun during the day will radiate their stored heat for several hours. Early in 
the morning, many of these objects will appear cooler than their surroundings, 
so be sure to look for subtle temperature differences in the scene, not just hot 
(white) targets. 
						

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MOre ab OUt INF rared
At first blush, new technologies can appear intimidating. Infrared cameras may 
seem imposing, but they are not so different from digital camcorders. In fact, 
you can get years of enjoyable, productive use out of your Navigator II without 
knowing  anything  in  this  section.  But, if  you would  like  to  learn  more about 
thermal imaging – how it was discovered and developed – read on.
Infrared – the early years
The  road  to  modern  thermal  imaging  began  way  back  in  1666,  when  Sir 
Isaac Newton used a prism to split white light into the colors of the rainbow.  
Today,  we  call  this  rainbow  the   
“Visible	Light	Spectrum.”		
Newton’s  experiment  proved  that 
sunlight  was  not  an  indivisible 
whole, as was once thought, but was 
made  of  a  range  of  subtly  different 
light energies.
In  1800,  Sir  William  Herschel 
took this discover y one step further, 
when  he  found  that  the  different 
colors	 of	the	 Visible	 Light	Spectrum	
have  different  temperatures,  which 
increase from the violet band of the 
spectrum to the red.
He  did  this  by  splitting  sunlight 
with  a  prism  and  placing  the 
darkened  bulb  of  a  thermometer  in 
each  color  band.    When  he  moved 
a  thermometer  past  the  red  color 
band,  Herschel  found  that  the 
energy  beyond  visible  red  light  was 
w a r m e r  t h a n  t h e  r e d  l i g h t  i t s e l f .   H i s  
name for this energy was “Calorific 
Rays.”    Today  we  call  it  “infrared 
radiation”  or  “thermal  energy,”  and 
use the two terms interchangeably.