Data Storage and Formats .............................................................. 21The Root Directory ........................................................................................... 22The Data Folder ............................................................................................... 22The Histogram Folder ....................................................................................... 23MiniSEED files ................................................................................................... 23Upgrading the Gecko firmware .......................................................................... 24Ports & Wiring ................................................................................ 24Power connector ............................................................................................... 24Alarm & Communications port........................................................................... 254D Sensor port (2018 Compact & Rugged) ........................................................ 251D Sensor port (mid-2019 Blast & SMA) ........................................................... 25Register your Gecko........................................................................ 26Warranty ........................................................................................ 26Extended warranty ............................................................................................ 26Appendix A ..................................................................................... 28Installing the Gecko Blast or SMA ..................................................................... 28Gains, range and clip levels ............................................................................... 29Installing the Gecko SMA-HR ............................................................................ 30Calibrating a Gecko SMA-HR .............................................................................. 32Installing the Gecko Tremor .............................................................................. 32Installing the Gecko Prism ................................................................................ 33Checking Sensor Operation................................................................................ 33Appendix B ..................................................................................... 34Internal Battery ................................................................................................ 34Charge Regulator .............................................................................................. 35LED Patterns (routine) ...................................................................................... 35LED Patterns (exceptions) ................................................................................. 35Appendix C ..................................................................................... 36Perle IOLAN DS1 Ethernet Adaptor ................................................................... 36Change IP address of the Ethernet adaptor ....................................................... 37Define IP address of Kelunji Hub computer ....................................................... 38