These  steps  conrm  the  basic  functionality  of  your  instrument. 
Turn the instrument power OFF now.
For a basic understanding of the Series 2600B functionality, we 
recommend that rst-time users become familiar with the Series 
2600B Reference Manual (document number 2600BS-901-01). 
Step 6: Turn the output o 
When you nish making measurements, turn the output  
o by pressing the OUTPUT ON/OFF 
 or    control. The 
output indicator LED turns o.