Electronic Components Datasheet Search |
|
CC2431ZRTCR Datasheet(PDF) 9 Page - TEXAS ADVANCED OPTOELECTRONIC SOLUTIONS |
|
CC2431ZRTCR Datasheet(HTML) 9 Page - TEXAS ADVANCED OPTOELECTRONIC SOLUTIONS |
9 / 16 page CC2431 2 4 6 8 10 12 14 45 50 55 60 65 70 75 80 85 90 95 10*log10(distance) Path Loss vs. log-distance for source 0x85, Z=2.1082. A=42.4103, n=2.9773 Figure 2: Path loss vs. log distance 2.1.2.1.4 Search Boundary Coordinates It is possible to reduce error and estimation time by setting search boundaries for the estimated location X and Y coordinates. The maximum area that can be considered is with X and Y in the interval [0.0, 63.75] meters. Assume that the Location Engine search is to be limited to include only the rectangular area bounded by the coordinates [xmin, ymin] and [xmax, ymax]. Four search boundary parameters are entered in the following order: xmin, xdelta , ymin, ydelta where: xdelta = xmax - xmin ydelta = ymax - ymin Note that even when it is chosen to search in the whole possible search space, these coordinates must be entered as the coordinates for the whole space, i.e. the following values: 0.0, 63.75, 0.0, 63.75. If some input parameters are omitted the Location Engine will not estimate correctly. 2.1.2.1.5 RSSI Values The RSSI values are the RSSI measurements corresponding to the set of reference coordinates. The RSSI values are within the interval [-40 dBm, -95 dBm] with precision 0.5 dBm. The negative sign is removed in the value written. As an example, in the case where the value RSSI = -50.35 dB, this would be written into the location engine as 50.5. Note that a value of 0.0 must be written as RSSI value for unused reference coordinates, if less than 16 reference nodes are used. The engine will not function correctly if only some of the parameters are loaded. 2.1.2.2 Loading Parameters All measured parameters described in the previous sections are loaded into the RF register MEASPARM . Before writing to MEASPARM , a 1 must be written to the register bit LOCENG.PARLD to indicate that a set of measured parameters are being written. Once the parameter load process commences CC2431 Data Sheet (Rev. 2.01) SWRS034B Page 9 of 15 |
Similar Part No. - CC2431ZRTCR |
|
Similar Description - CC2431ZRTCR |
|
|
Link URL |
Privacy Policy |
ALLDATASHEET.NET |
Does ALLDATASHEET help your business so far? [ DONATE ] |
About Alldatasheet | Advertisement | Contact us | Privacy Policy | Link Exchange | Manufacturer List All Rights Reserved©Alldatasheet.com |
Russian : Alldatasheetru.com | Korean : Alldatasheet.co.kr | Spanish : Alldatasheet.es | French : Alldatasheet.fr | Italian : Alldatasheetit.com Portuguese : Alldatasheetpt.com | Polish : Alldatasheet.pl | Vietnamese : Alldatasheet.vn Indian : Alldatasheet.in | Mexican : Alldatasheet.com.mx | British : Alldatasheet.co.uk | New Zealand : Alldatasheet.co.nz |
Family Site : ic2ic.com |
icmetro.com |