[求助]关于gerber文件

wljboy

我用allegro产生的钻孔文件用文本文档打开里面的符号不知道什么意思，请问谁有RS274X方面的资料，或者谁能解释一下：
M48
METRIC
T01C.33
T02C.762
T03C1.
T04C1.4
T05C1.5
T06C3.
T07C3.5
;LEADER: 12
;HEADER:
;CODE  : ASCII
;FILE  : new-1-2.drl for board new.brd ... layers TOP and BOTTOM
;T01 Holesize 1. = 0.330000 Tolerance = +0.000000/-0.000000 PLATED MM
;T02 Holesize 2. = 0.762000 Tolerance = +0.000000/-0.000000 PLATED MM
;T03 Holesize 3. = 1.000000 Tolerance = +0.000000/-0.000000 PLATED MM
;T04 Holesize 4. = 1.400000 Tolerance = +0.000000/-0.000000 PLATED MM
;T05 Holesize 5. = 1.500000 Tolerance = +0.000000/-0.000000 PLATED MM
;T06 Holesize 6. = 3.000000 Tolerance = +0.000000/-0.000000 PLATED MM
;T07 Holesize 7. = 3.500000 Tolerance = +0.000000/-0.000000 PLATED MM
%
G90
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T07
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M30

yousuosihao

应该是钻孔的坐标位置[em01][em01]