User Manual
  GETTING STARTED 
29 
Basic Safety Checks 
Background 
The GPT-9000/9000A is a high voltage device 
and as such, daily safety checks should be 
made to ensure safe operation.  
1.  Ensure all test leads are not broken and are free 
from defects such as cracks or splitting. 
2.  Ensure the safety tester is always connected to 
an earth ground. 
3.  Test the safety tester operation with a low 
voltage/current output: 
  Ensure the safety tester generates a FAIL 
  judgment when the HIGH VOLTAGE and 
  RETURN terminals are shorted (using the 
  lowest voltage/current as the testing 
  parameters). 
 WARNING 
Do not use high voltages/currents when the HIGH 
VOLTAGE and RETURN terminals are shorted. It 
may result in damage to the instrument. 










