O16-DPT9 rev B

* 0520-001-H002 (O16-DPT9) DRAWING NO. 41285751-001-02 PAGE 5

0201 * AFTER AN ERROR MESSAGE IS OUTPUT, THE PEN IS MOVED NORTH TWENTY 0202 * UNIT LENGTHS AND Q6 (TEST NO?) IS ASKED 0203 * 0204 * 0205 * METHOD 0206 * 0207 * BEFORE A TEST IS RUN ON A PLOTTER, THE RELEVANT PARAMETERS ARE SET 0208 * UP BY TYPING IN APPROPRIATE ANSWERS TO THE PARAMETER QUESTIONS AS 0209 * DESCRIBED ABOVE. AFTER THE FIRST OUESTION IS ANSWERED UNIT, LMAX 0210 * AND LMIN ARE SET UP AS DESCRIBED BELOW: 0211 * 0212 * OPTN UNIT (NUMBER OF STEPS IN ONE UNIT LENGTH) 0213 * ---- ---- ------------------------------------ 0214 * 2111 20 = 20*0.005 IN = 0.1 IN 0215 * 2112 10 = 10*0.010 IN = 0.1 IN 0216 * 2113 20 = 20*0.100 MM = 2.0 MM 0217 * 2114 10 = 10*0.200 MM = 2.0 MM 0218 * 0219 * OPTN LMAX (NUMBER OF STEPS IN MAXIMUM RANGE OF EAST-WEST LIMIT) 0220 * ---- ---- ----------------------------------------------------- 0221 * 2111 2730 = (13/0.005)*(21/20) 0222 * 2112 1365 = (13/0.010)*(21/20) 0223 * 2113 3465 = (330/0.10)*(21/20) 0224 * 2114 1733 = (330/0.20)*(21/20) 0225 * 0226 * OPTN LMIN (NUMBER OF STEPS IN MINIMUM RANGE OF EAST-WEST LIMIT) 0227 * ---- ---- ----------------------------------------------------- 0228 * 2111 2470 = (13/0.005)*(19/20) 0229 * 2112 1235 = (13/0.010)*(19/20) 0230 * 2113 3135 = (330/0.10)*(19/20) 0231 * 2114 1567 = (330/0.20)*(19/20) 0232 * 0233 * WHEN THE LAST PARAMETER QUESTION IS ANSWERED, THE PROGRAM GOES 0234 * THROUGH INITIALISATION ROUTINE, CHECKING BUSY AND INTERRUPT FLIP- 0235 * FLOPS. THE LIMIT IS ALSO CHECKED TO ENSURE THAT IT DOES NOT OCCUR 0236 * IN LESS THAN FIVE PERCENT OF THE SPECIFIED VALUE AND DOES OCCUR 0237 * WITHIN MORE THAN FIVE PERCENT OF THE SPECIFIED VALUE. AFTER THAT 0238 * THE QUESTION 'TEST N0?' IS ASKED. IF IT IS DESIRED TO REPEAT THE 0239 * INITIALISATION THE ANSWER SHOULD BE LETTER I, OTHERWISE IT SHOULD 0240 * BE 1, 2, 3, 4 OR A (ALL TESTS SEDUENTIALLY).THE APPROPRIATE 0241 * TEST/TESTS WILL THEN BE PERFORMED. ANY OR ALL TESTS MAY NOW BE 0242 * REPEATED BY RETYPING THE ANSWER. WHEN IT IS DESIRED TO END THE 0243 * SERIES OF TESTS, THE ANSWER SHOULD BE LETTER E. IF AN ERROR 0244 * CONDITION IS FOUND, THE PEN IS MOVED UP; THE APPROPRIATE ERROR 0245 * MESSAGE IS TYPED OUT; THE PEN IS MOVED NORTH TWENTY UNIT LENGTHS 0246 * AND CONTROL IS RETURNED TO THE ASR BY ASKING 'TEST NO?'. 0247 * 0248 * 0249 * TEST PATTERNS 0250 *