PULSAR MEASUREMENT 
 
19 
 
Button Functions 
There are 4 push buttons located under the display. Their name and 
functions are as follows: 
How to Access Program Mode 
To access the Program mode, press the “ESC” and “Enter” button 
simultaneously, where upon the display will show PASS on the LCD display 
briefly, to prompt you to enter the password, the display will now show 
0000, and the left-hand digit will flash. 
By using the UP and DOWN keys to increment or decrement the digit, and 
the ENTER key to shift the flashing digit to the next position. Assuming the 
passcode is the default 1997, you should then enter this. 
 
The ESC key can be used to go back to the previous digit. Finally, when you 
have selected all digits pressing the ENTER key again will input the selected 
pass code to the IMP Lite, if successful the display will show APP 
(Application).  If, however you input the wrong pass code the IMP Lite LCD 
display will show Fail for 2 seconds and will revert to run mode. 
   
Used to Navigate out of the 
Menu System and return to 
Run Mode. Also used to Cancel 
a Parameter Value entered in 
error.