Maps reproduced by permission of Ordnance Survey on behalf of HMSO. Crown copyright and database right 2004. All rights reserved. Ordnance Survey License number 100006863.

next >Strongest Server RSSI

This plot shows the highest signal strength (dBm) measured within each data bin area, overlaid on a map of the area (or building plan for in-building measurements). This is one of many display modes available in TRAMPS. Multiple data files can be loaded as a single data set. The data bin size is user-selectable and all colour keys are fully configurable.

™ TRAMPS is a trademark of Multiple Access Communications Limited

Maps reproduced by permission of Ordnance Survey on behalf of HMSO. Crown copyright and database right 2004. All rights reserved. Ordnance Survey License number 100006863.

< previousnext >Multiple Data Files

Multiple data files can be loaded into TRAMPS as a data set, comprising both RSSI data files and quality-of-service (QoS) files. QoS files can contain data such as C/I and the location area code (LAC) decoded from the broadcast information contained in each channel. Two data sets may be loaded and compared, allowing, for example, the comparison of coverage over time. Basestation files provide a mapping between basestation names, locations and LACs. All input files are in a comma-delimited text format that can be directly loaded from MAC Ltd's CatchAll™ and CRIBS™ TETRA measurement systems, or from third-party tools using a similar format.

™ CatchAll, CRIBS and TRAMPS are trademarks of Multiple Access Communications Limited

Maps reproduced by permission of Ordnance Survey on behalf of HMSO. Crown copyright and database right 2004. All rights reserved. Ordnance Survey License number 100006863.

< previousnext >Difference mode

The TRAMPS difference mode allows comparison between two sets of data. For example, the data sets could contain data collected at different times, allowing the comparison of coverage or quality over time. Alternatively, the difference mode could allow the comparison of measured data to predicted coverage. In the plot above the data bins coloured grey (either light grey or dark grey) indicate that a comparison could not be made as values only exist in one data set and not the other.

™ TRAMPS is a trademark of Multiple Access Communications Limited

Maps reproduced by permission of Ordnance Survey on behalf of HMSO. Crown copyright and database right 2004. All rights reserved. Ordnance Survey License number 100006863.

< previousnext >Bin Inspector

The TRAMPS bin Inspector allows the user to look at all of the available data for a selected data bin. In this example, the main display shows the channel-to-interference ratio (C/I) for a single channel (3678). The Bin Inspector window shows the data for the selected bin (towards the centre of the display - highlighted with a thick blue border). The Bin inspector can be a free-floating window or docked to the main window (as shown above).

™ TRAMPS is a trademark of Multiple Access Communications Limited

Maps reproduced by permission of Ordnance Survey on behalf of HMSO. Crown copyright and database right 2004. All rights reserved. Ordnance Survey License number 100006863.

< previousnext >Single Channel LAC

TRAMPS can display the single channel location area code (LAC) to track down the source of co-channel interference. The plot above shows that Channel 3678 has signals from multiple basestations and is likely to suffer from co-channel interference. The LAC values identify the serving basestations. The data bins that are coloured grey (including the data bin selected for the Bin Inspector display - highlighted with a thick purple border) contain LACs from more than one basestation within the data bin area.

™ TRAMPS is a trademark of Multiple Access Communications Limited

Maps reproduced by permission of Ordnance Survey on behalf of HMSO. Crown copyright and database right 2004. All rights reserved. Ordnance Survey License number 100006863.

< previousnext >Basestations

Basestation files allow TRAMPS to know the position, name and LAC of basestations. This information is used in the Bin Inspector to add the name of known basestations to the LAC column, and to show basestation locations on the display. Clicking on a basestation icon highlights the data bins known to be associated with that basestation for the current display mode. For example, in the single channel LAC plot above, the selected basestation (circled for clarity on this screenshot) is contributing the signals on channel 3678 with a LAC of 3738 (ie, the data bins coloured green).

™ TRAMPS is a trademark of Multiple Access Communications Limited

< previousCRIBS™ Data Analysis with TRAMPS

The output files produced by CRIBS can be directly loaded into the TRAMPS data analysis application, offering a multitude of ways to view the data.

™ CRIBS and TRAMPS are trademarks of Multiple Access Communications Limited