deister electronic GmbH 30890 Barsinghausen Germany 3V19/07/04RDL150 RS485/RS232Contents1 Basic Information..................................................................41.1 Introduction...................................................................................................... 41.2 Applications..................................................................................................... 42 Technical Data...................................................................... 53 Connection RDL150 with RS485............................................ 63.1 Connection RDL 150 with RS232........................................................................64 RS485 Interface..................................................................... 75 Mechanical Dimensions........................................................ 85.1 Rear view (opened housing)............................................................................... 95.2 LED explanation.............................................................................................. 105.3 Easy Trim Function........................................................................................... 116 Installation Instructions...................................................... 126.1 Possible interference sources............................................................................ 126.2 Mounting considerations.................................................................................. 137 Upgrading Firmware.......................................................... 148 Regulatory Notices / Zulassungen..................................... 168.1 Europe/Europa............................................................................................... 168.1 FCC Digital Device Limitations........................................................................ 16