... the top end of the rail • Push it all the way left to the power supply • Push it down • Screw it tight to the rail underneath SM331; AI 8x12 Bit Getting Started part 1: -20mA Getting Started, ... part 1: -20mA Getting Started, 05/2008, A5E00253410-04 Preface 1.1 General SM331; AI 8x12 Bit Getting Started part 1: -20mA Getting Started, 05/2008, A5E00253410-04 Requirements 2.1 Basics Basic ... device (measuring instrument for commissioning, that can measure and supply current) depends on the manufacturer SM331; AI 8x12 Bit Getting Started part 1: -20mA Getting Started, 05/2008, A5E00253410-04...