IOLITE® 
TECHNICAL  REFERENCE  MANUAL 
FPGA 
A   field-programmable   gate   array   (FPGA)   is   an   integrated   circuit   designed   to   be   configured   by   the               
customer  or  designer. 
After  manufacturing:  hence   field-programmable . 
GND 
The  electrical  ground  (aka.  earth). 
GPS 
The   Global   Positioning   System   (GPS)   is   a   space-based   global   navigation   satellite   system  that  provides              
reliable  location  and  time  information  in  all  weather  and  at  all  times  and  anywhere  on  or  near  the  Earth                   
when  and  where  there  is  an  unobstructed  line  of  sight  to  four  or  more  GPS  satellites. 
Hz 
The   hertz   (symbol:   Hz)   is   the   SI   unit   of   frequency   defined   as   the   number   of   cycles   per   second   of   a                    
periodic  signal. 
IRIG-B 
The  Inter  Range  Instrumentation  Group  (IRIG)  is  the  standards  body  of  the  Range  Commanders  Council               
(RCC).  They  publish  a  number  of  standards:  e.g.  IRIG  time-codes  The  different  time-codes  defined  in  the                
Standard  have  alphabetic  designations.  A,  B,  D,  E,  G,  and  H.  IRIG-B  has  a  Bit  rate  of  100  Hz. 
LED 
A  light-emitting  diode  is  a  semiconductor  light  source.  It  is  used  in  all  modules  of  the  SIRIUS®  system  to                   
indicate  the  status  of  the  modules. 
LEMO 
LEMO  is  the  name  of  the  high  quality  push-pull  connectors  that  are  used  for  cable  connections:  e.g.  the                  
power-supply   cable   and   the   sync   cables   of   the   SIRIUS®   system.   The   company   that   produces   these               
connectors  is  also  called  LEMO  ( www.lemo.com ) 
 
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