10 - 



OPE RATIO N 



9. Signals will "be in the 0.1 to 5V range. Adjust Strip Chart 

 Recorder sensitivity accordingly. 



10. Start Strip Chart Recorder. 



11. Holding instrument so that it cannot move, run rope at in- 

 spection speed and record signals. 



12. The amplitude and shape of the "Audio" signal can be adjusted 

 by the Volume and Enhancement controls. 



13. Inspect strip chart recording. In general, flaws will be in- 

 dicated by pronounced pulses in the "Audio" recording. The 

 nature of the flaw can usually be better identified from the 

 "Record" recording. 



13. Reinspect rope visually making use of the headphones to pre- 

 cisely locate the flaw and compare results with strip chart 

 recording. 



27 



