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LED’s 
There  are  two  LED’s  which  can  be  seen  through  the  lid,  of  the  blackbox 
enclosure,  which  will  indicate  the  operational  status  of  the  unit  whilst  in 
RUN mode, as follows: 
LED 1 
LED 2 
Run Mode 
Constant 
On 
Constant 
On 
Internal Error 
Slow 
Flashing 
Slow 
Flashing 
Transducer fault 
Off  Slow 
Flashing 
Failed Safe /Loss of Echo 
Slow 
Flashing 
Off  Healthy signal unit working 
normally.  
 
Program Mode
Program ModeProgram Mode
Program Mode 
  
 
This mode is used to set up the blackbox or change information already set. 
You must use either the PC Software supplied (standard) or alternatively the 
unit  can  be  set  up  with  a  Hand  Held  Calibrator  (optional),  both  of  which 
must be connected to the blackbox via the RS 232 Serial Interface.   
Entering  a  value  for  each  of  the  parameters  that  are  relevant  to  your 
application provides all the programming information. 
 
How to Access Program Mode 
To enter program mode, you simply enter the passcode, via the keypad on 
the  PC  Programming  Software  (standard)  or  the  Hand  Held  Calibrator 
(optional),  followed  by  the  ENTER  key.  The  default  passcode  is  1997,  so 
you would press the following: