Altium Mechanical Layer机械层定义

北城以北

Mechanical 1 (M1)：Board outline (it is not recommended to use just the keep-out layer, since that can be used for other things also).建议作为板框层使用，不用做禁布层或其他用途
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! F4 Y% q: O/ z8 s, cMechanical 2 (M2)：PCB notes and comments for the PCB manufacturer/assembler (included in Gerber output).需要PCB生产或装配知悉的注释和要求，生成Gerber时输出此层
Mechanical 3 (M3)：General notes and comments that the PCB manufacturer/assembler does not need to know about (not included in Gerber output).不需要PCB生产或装配知悉的注释和要求，生成Gerber时不输出此层

! {, ?1 B8 y" J0 |+ X; qMechanical 11 (M11)：Top layer dimensions (paired with M12).顶层尺寸标注
Mechanical 12 (M12)：Bottom layer dimensions (paired with M11).底层尺寸标注
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Mechanical 13 (M13)：Top layer component body information (3D models and mechanical outlines, paired with M14).顶层元器件实体尺寸信息（3D模型和机械边框，与M14层相对）
& V4 C! E% ?7 _) {" p4 i; f- g* U% dMechanical 14 (M14)：Bottom layer component body information (3D models and mechanical outlines, paired with M13).底层元器件实体尺寸信息（3D模型和机械边框，与M13层相对）
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Mechanical 15 (M15)：Top layer courtyard and assembly information (paired with M16). This normally includes a cross-hairs at the origin of the component.顶层元器件实体占位和装配信息（与M16相对），一般也包括圆心标注的十字准线
. G9 m* H1 ~/ A9 w0 H! O' GMechanical 16 (M16)：Bottom layer courtyard and assembly information (paired with M15). This normally includes a cross-hairs at the origin of the component.底层元器件实体占位和装配信息（与M15相对），一般也包括：原点标注的十字准线

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