TM 5-3895-374-24-1 To correct this error, 1) Increment the span pointer to the second position Press [16] [SELECT] [1] [ENTER] 5000 lbs.  on scale ? scale reading 4990 LB 2) Set Span, Press [13] [SELECT] Display will flash ’2’ (second span entry) and return to ’4990’ LB. 3) Enter correct weight  Press [5] [0] [0] [0] [ENTER].  Display will then flash old weight (4990) and then read new correct weight  ? scale reading 5000 LB 4) Retest scale at  0, 1000 and 5000 lbs.  If readings are okay, exit Calibration node. Note: If reading at 1000 is no longer correct,  you must re-enter the first span point ? decrement the span pointer: [17] [SELECT] [1] [ENTER].  Set span at 1000 lbs. And then repeat the above procedure.  You can always check  the current position of the span pointer by pressing Set Span ([13] [SELECT]) and observing the number that momentarily flashes. Note the span pointer cannot be incremented past 2 and cannot be decremented past 1. APPENDIX III - WEIGHT STABILIZATION SYSTEM The DF2000 indicator features an internal resolution of 60,000 raw counts.    Since the displayed resolution is limited to 5000 graduations.  the indicator can utilize up to 12 internal raw counts per weight graduation (60,000/5000).    This high ratio  of raw counts to graduations allows the indicator to employ a number of software functions to produce a stable weight display under less than optimum conditions.  The parameters for these functions can be varied  by the user.  The stability, sensitivity and the speed of response to applied load can be adjusted in order to ’tune’ the indicator to handle difficult weighing situations. Average Shift Values 1, 2 and 3  (Parameters 41, 42, and 43) The DF2000 performs 5 analog to digital conversions per second - the process by which the signal from the load cell is converted from voltage into a number value.  Each conversion or update produces a new  internal  raw count reading.  The actual displayed weight is computed from the average of 10 raw count readings stored in a register.  After every update, the new raw count reading is  compared with the average reading.  The amount of difference between the new reading and the average reading determines the rate at which the new reading is shifted into the averaging register - and thus the rate at which the displayed weight will change.  The Average Shift Values 1, 2 and 3 are used to set this rate. e.g.: Averaging register with 10 internal count readings 1 2 3 4 5 6 7 8 9 10 512 512 514 512 513 512 511 512 513 514 - assume the scale has been calibrated so that 10 counts represent a 1.0 lb.  graduation. - average of 10 - internal counts = 513 counts * 51 lb. (displayed weight). Average Shift Value 1 - Assume that the Average Shift Value 1 has been set to 4 counts (slightly less than 1/2 graduation in this example).  As long as the difference between a new internal count reading and the current average reading (513) is less than 4 counts, the new reading will not be shifted into the register and computed into a new average.  Thus the displayed weight will remain stable. (page3-74)