Verify that your PGT120 combo testers are calibrated and in working order.
The PGT120.CU device is designed to facilitate easy, in-house, calibration verification of Wolfgang Warmbier PGT120 Series ESD Combo Testers. The PGT120.CU is designed to verify that testers calibrated to ANSI/ESD S1.1-1998 and ANSI/ESD STM9.1-2001 so it works with most makes of test equipment. With the rotation of the selector switch, you can check that the testers are calibrated.
For use with models: