The displacement check is a new safety feature in 2.16 that prevents shocks with excessive calculated-displacement from damaging your shaker.  Though helpful in protecting expensive equipment or test-articles, this feature can cause an issue with noisy systems. Since the displacement is calculated from a double integration of the acceleration measurement, any noise or ICP settling can be misinterpreted as high displacements.    

Instructions to Disable Displacement Check

Step 1: Open the Shock.ini

• Go to the directory C:/VcpNT/Config and open the shock.ini file with Notepad. 
• Using CTRL+F, search for DISPL

Step 2: Change the Value

• Change the value of DISPL_CHECK_DISABLED to "1" as shown below
• If the line is commented out (Has a # in front of the entry), remove it as shown below. 

DISPL_CHECK_DISABLED: 1
#DISPL_CHECK_DISABLED default is 0
#Use to switch off displacement check

If the shock.ini file does not contain the DISPL_CHECK_DISABLED line, simply copy the lines from above and paste at the end of the file. 

Step 3: Save and Restart the Test

• Save and Close the Shock.ini file in notepad.
• If in Standby or Run mode in m+p VibRunner, select Idle and try the test again. 

Did you know you can enter comments in the shock.ini file by adding a "#" in front of a line of text? The hashtag/pound sign tells VibControl to ignore that line, so add the tag and type away!