User guide

System Output
D2119 Dart RTLS User Guide 88
Locate Details
You can enable Locate details for the output data stream (see Configuring output control (on
page 43)). Locate details TLS describes which Receivers were used in a location computation.
The output appears in the following format, with an additional field <Locate-Details>:
<Data Header>,<tag #>,<X>,<Y>,<Z>,<battery>,<timestamp>,<unit>,<Locate-
Details><LF>
where <Locate-Details> describes the Receivers involved in the location computation. The
following example for system output from a Dart RTLS Hub shows that the Receivers 37, 38,
and 43 have detected tag ID 00200007 and involved in the location calculation:
T,00200007,46.2,32.2,0.0,13,1282704616.251,3,S37-S38-S43
T,00200007,46.2,32.2,0.0,13,1282704617.146,3,S37-S38-S43
T,00200007,46.2,32.2,0.0,13,1282704619.045,3,S37-S38-S43
T,00200007,46.2,32.2,0.0,13,1282704620.942,3,S37-S38-S43
Detail Details
The hub can be configured to output detect details which can be helpful for troubleshooting.
Locates and non-locates will now contain details about receivers that detected the blinks,
receivers that were pre-pruned and receivers that were pruned out.
With additional detect details, the data output has the format Hrr[Pxx][Ryy] where
Hrr: indicates receiver rr saw the tag blink where rr is the receiver number
Pxx: indicates receiver rr was pre-pruned during tag location calculation in virtual group xx. Pxx
may not appear if the receiver was not pre-pruned in any virtual group; it might appear
multiple times if the receiver was pre-pruned in more than one virtual group.
Ryy: indicates receiver rr was pruned during tag location calculation in virtual group yy. Ryy
may not appear if pruning was turned off or receiver was not pruned in any virtual group; it
might appear multiple times if the receiver was pruned in more than one virtual group.
In the below T (2D locate) packet examples, ‘S’ indicates the receivers that were used for the
locate computation, ‘H’ indicates the receivers that detected the tag blink, ‘P’ indicates pre-
pruning and ‘R indicates pruning.
Note – If a receiver is present in the ‘H’ list without ‘P’ or ‘R’ but not present in the ‘S’ list, that
means that particular receiver saw the blink and was used for computation in a virtual group,
but that virtual group computation was not selected for the final locate computation.
Example 1:
 T,00210EA1,81.9,47.2,5.0,10,1433424562.700,2,0.93,G0.62,SFF-S81-S42-
S84,H41P2P4-HFF-H81-H42-H84-H43P2P4
o SFF-S81-S42-S84 - receivers FF, 81, 42 and 84 were used for this locate computation.
o H41P2P4- H43P2P4 – receiver 41 and 43 saw the blink but it was pruned in virtual
group 2 and virtual group 4.
o HFF-H81-H42-H84 – receivers FF, 81, 42 and 84 saw the blink and were not pruned
or pre-pruned in any virtual groups.