RIGOL MSO/DS1000Z Series - Manual (Page 8)

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a standard 19-inch machine cabinet with four M6 screws and four M6 square
nuts.
6. 安装后注意：机架占 4U 高度，箭头所指的孔为机架的安装孔，注意对准安装。
Post-installation notice: the rack occupies a height of 4U. The holes pointed out
by the arrows are installation holes. Note that they should be aligned with during
installation.
S M1 0 2 0 0 0 2 6 9 2
IGA17X00-1110
Nov. 2013