User Manual
vi 
after making the measurements by testing with known-operating 
voltage sources and test for both DC and AC voltages. Do not attempt 
any service or adjustment unless another person capable of rendering 
first aid and resuscitation is present.  
Do not insert any object into an instrument's ventilation openings or 
other openings. 
Hazardous voltages may be present in unexpected locations in circuitry 
being tested when a fault condition in the circuit exists. 
Fuse replacement 
Fuse replacement must be done by qualified service-trained 
maintenance personnel who are aware of the instrument's fuse 
requirements and safe replacement procedures. Disconnect the 
instrument from the power line before replacing fuses. Replace fuses 
only with new fuses of the fuse types, voltage ratings, and current 
ratings specified in this manual or on the back of the instrument. Failure 
to do so may damage the instrument, lead to a safety hazard, or cause a 
fire. Failure to use the specified fuses will void the warranty. 
Servicing 
Do not substitute parts that are not approved by B&K Precision or 
modify this instrument. Return the instrument to B&K Precision for 
service and repair to ensure that safety and performance features are 
maintained.  
Cooling fans 










