ok international airidus? air purification ? metcal? soldering & rework systems ? techcon? fluid dispensing groundzero static control ? wire wrapping connec tion solutions ok international ltd ? eagle close ? chandler?s ford ? eastleigh ? hants so53 4nf ? uk phone: +44 (0)1703 489000 ? fax: +44 (0)1703 489109 www.okinternational.com model wbt-02 wrist strap tester instructions for use 1.wrist strap testing ensure wrist strap is making good connection to the skin (this is usually achieved by wearing the strap so that t he stud is on the inside of t he arm, as this area will have less hair). connect one end of wrist strap c able to the strap and the other to the tester using the most suitable connector. hold the tester with wrist strap hand and push the touch plat e with a finger from the other hand. a green light and tone s hould be obtained, indicating a pass. 2. system testing ensure wrist strap is making good connection to the skin (as above). connect ground connection to the most suitable connecto r on the tester. hold tester in wrist strap hand and push the touch plate with a finger from the ot her hand. a green light and pulsing tone should be obtained, indicating a pass. a hi-fail (red led) indicates a resistance greater than 35 meg-ohms in the strap or system and a lo-fail (red led) indicates a resistance lower than 900 k-ohms. in either case, the faulty component can be isolated by testing indi vidually between the touch plate and any of the connectors on the tester. remem ber that different people show a wide variation in body resistance. if a hi-fail is caused because of this, try moving the position of the strap to obtain better contact. specification hi-fail resistance above 35m ohms ( 10%) pass resistance between 35m ohms and 900k ohms ( 10x) lo-fail resistance below 900k ohms ( 10%)
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