JCM Part No . 960 - 000076R _ Rev . 1 © 2007, JCM - American Corporation 6 - 5 Calibration and Testing World Bill Acceptor (WBA® - 1x/2x - SS & SS2) Section 6 16 . Slowly move the MAG Head Test Board in and out of the Acceptor Head to locate the maximum peak value ( See Figure 6 - 20) . Peak value (b) should read between 0 . 5V and 1 . 2V when within the proper range . 17 . Continue to slowly move the MAG Head Test Board in and out several millimeters to locate the position where the “MAG Center A/D” value enters a range within - 0 . 1Volts in relation to the peak value detected . 18 . When the “MAG Center A/D” value enters the designated range, press the “OK” Screen Button . The calibration process will begin and the Figure 6 - 21 Screen will appear . 19 . When calibration is complete, the Figure 6 - 22 Form 1 Screen will appear providing a prompt asking if the current adjustment data results should be written into the Acceptor Head Memory . 20 . Press the “Save new adjustment . ” Screen Button and then the Click on the “OK” Screen Button to write the data into memory if it is acceptable (See Figure 6 - 23) . If it is not, press the “Return to MAG Adjust - ment” Screen Button or press the "N" n key; the original data will automatically return deleting all of the current adjustment data collected . 21 . When the Figure 6 - 24 Screen appears, all calibration procedures are complete . If another WBA Acceptor Head requires calibration, press the ENTER E key and replace the current calibrated unit with a new Figure 6 - 19 Magnetic Adjust Value Screen a b Figure 6 - 20 Locating the MAG Head Calibration Peak Value Reading Figure 6 - 21 Adjusting Magnetic Gain Screen Figure 6 - 22 Write Value Prompt Screens Figure 6 - 23 Writing Adjustment Data Screen Figure 6 - 24 End Calibration Screen