Mantracourt Electronics Limited
T24 Technical Manual
4
Connections ...................................................................................................................... 68
Output Range Setting........................................................................................................... 69
T24-WSS [Wind Speed Sensor] ................................................................................................. 70
Overview .......................................................................................................................... 70
Communications ................................................................................................................. 70
Parameter List ................................................................................................................ 70
Data Provider Format .......................................................................................................... 72
Power Supply .................................................................................................................... 72
Battery Life .................................................................................................................... 72
Installation ....................................................................................................................... 73
Antennas ....................................................................................................................... 73
Appendix A ......................................................................................................................... 74
Communications Software Overview ........................................................................................ 74
Operational Modes ........................................................................................................... 74
Deep sleep .................................................................................................................. 74
Default Running ............................................................................................................ 74
Paused ....................................................................................................................... 74
Operation ................................................................................................................... 74
Configuration ............................................................................................................... 74
Data Acquisition ........................................................................................................... 75
Data Type Formats .............................................................................................................. 77
UINT8 ........................................................................................................................... 77
UINT16 ......................................................................................................................... 77
INT32 ........................................................................................................................... 77
Float ............................................................................................................................ 77
String ........................................................................................................................... 77
Binary ........................................................................................................................... 77
RSSI, CV and LQI ................................................................................................................. 78
Unslotted CSMA/CA ............................................................................................................. 79
With CSMA Disabled .......................................................................................................... 79
With CSMA Enabled .......................................................................................................... 79
Data Provider Control Interface DPCI (Advanced) ......................................................................... 79
Manual Implementation ..................................................................................................... 79
Example ..................................................................................................................... 80
Base Station Assisted ........................................................................................................ 80
Examples .................................................................................................................... 80
Cancelling ................................................................................................................... 81
Appendix B ......................................................................................................................... 82
Radio Range ...................................................................................................................... 82
Example 1...................................................................................................................... 82
Example 2...................................................................................................................... 82
Example 3...................................................................................................................... 83
Example 4...................................................................................................................... 84
Antenna Basics ................................................................................................................... 85
Gain ............................................................................................................................. 85
Polarisation .................................................................................................................... 85
Mounting Requirements ..................................................................................................... 85
Receiver Input Power and RSSI Relationship ............................................................................ 85
Path Loss at 2.4GHz .......................................................................................................... 86
Power Density ................................................................................................................. 87
RF Exposure Limits ........................................................................................................... 87
Antenna Installation ......................................................................................................... 87
Internal Chip Antenna .................................................................................................... 87
External Antennas ......................................................................................................... 89
Acquisition Module Power Supply ......................................................................................... 89
Battery Types .............................................................................................................. 89
In-line Battery Modules ................................................................................................... 90
Acquisition Module Battery Life – Strain Gauge Input ................................................................. 90
Rough Guide ................................................................................................................ 90
Accurate Guide ............................................................................................................ 91
Acquisition Module Battery Life – Non Strain Gauge Input ............................................................ 92
Accurate Guide ............................................................................................................ 92
Appendix C ......................................................................................................................... 94
Customising T24 Toolkit ....................................................................................................... 94
Appendix D ......................................................................................................................... 95
Approvals ......................................................................................................................... 95
