AB16-12T3

* NAME: AB16-12T3 DOC 70181010000 REV F PAGE 4

0118 * 0119 * ER4 - NO INTERRUPT RECEIVED IN 22 MILLISECONDS 0120 * 0121 * ER5 - OCP '220 DID NOT RESET INTERRUPT 0122 * 0123 * ER6 - INTERRUPT RECEIVED WITH MASK RESET 0124 * 0125 * ER7 - LOCATION '61 NOT INCREMENTING 0126 * 0127 * ER8 - MEMORY POINTED TO BY (X) RUNNING TOO FAST 0128 * 0129 * ER9 - MEMORY POINTED TO BY (X) RUNNING TOO SLOW 0130 * 0131 * ERROR MESSAGES (TWO LETTERS) ARE POSSIBLE FROM THE FORTRAN 0132 * LIBRARY, HOWEVER THEY SHOULD NOT APPEAR IF THE CORRECT 0133 * LIBRARY WAS LOADED. 0134 * 0135 * 0136 * OUTPUT DATA - STABILITY TEST 0137 * 0138 * THE STABILITY TEST DETERMINES A VALUE FOR AN RTC CYCLE 0139 * MEASURED IN UNITS OF EIGHT CP CYCLES AND AVERAGED OVER A 0140 * 4096 CYCLE PERIOD. ONE THOUSAND SAMPLES OF ONE RTC 0141 * CYCLE EACH ARE TAKEN AND A RECORD OF EACH DEVIATION 0142 * FROM THE AVERAGE IS KEPT. THE AVERAGE AND THE 0143 * TALLY OF DEVIATIONS (FREQUENCY DISTRIBUTION) ARE LISTED 0144 * IF THE RESULTS ARE NOT ACCEPTABLE OR FORCED (SWITCH 3) 0145 * FOR USE BY THE USER SYSTEMS ANALYST. THE DISTRIBUTION 0146 * SHOWS THE EFFECT OF JITTER ON THE RTC AND THE CP CLOCK. 0147 * 0148 * A 'REJECT' MAY RESULT FROM NON-ZERO COUNTS IN THE ENDS OF 0149 * THE TABLE OR A WIDTH OF MORE THAN: 0150 * 4 IF AVTRAUE LESS THAN 667 0151 * 0.6 % IF AVERAOE 667 TO 1333 0152 * 8 IF AVERAGE GREATER THAN 1333 0153 * 0154 * 0155 * OUTPUT DATA - ELAPSED TIME MEASUREMENT 0156 * 0157 * THE TEST OPERATOR INPUTS THE INTENDED REAL RATE OF THE RTC 0158 * IN HERTZ AND A SAMPLE SIZE IN CYCLES. THE OUTPUT 0159 * IS THE MEASURED TIME FOR THE SAMPLE, WITH RESPECT 0160 * TO THE CP CLOCK, AND THE CALCULATED TIME FOR HIS 0161 * COMPARISON. THE MEASURED TIME IS COMPARED TO THE CALCULATED 0162 * TIME AND THE PER CENT DEVIATION (TC 0.1%) IS TYPED. IF 0163 * THE DEVIATION IS GREATER THAN 7.0% A WARNING MESSAGE 0164 * IS ALSO TYPED. 0165 * 0166 * THE CPU TIME USED IS THE VALUE OBTAINED IN THE 'CPU 0167 * OPERATION TIME' IF IT HAS BEEN RUN, OR THE DEFAULT VALUE