... depth ).In the machine,the scale of A and B subrack is standard 19 inch. The height is 3U.The depth ... fixing is a method that put the A and B subrack into the mainframe-box of CIR, and then ties the ... on the 19 inch rack directly. And A subrack is above the B subrack.The bearing of rack must achieve the A ... , B subrack fixing requirement.2.2 MMI2.2.1 Outline dimensionThe ...