Passive Transponders

Reaction Time & Dead Time

Similar to the RACE RESULT Decoder the Track Box (Passive) uses a detection algorithm to maximise the accuracy of recorded times. 

The 2 key settings are the Reaction Time and Dead Time, which by default are set differently on Track Boxes due to their design. 

The default Reaction Time is 10 seconds, the reason for this is that with antennas mounted to the side there is much greater chance of early detections, particularly if the Track Box is facing participants. A low reaction time may result in a less accurate time being recorded, by increasing this to 10 seconds it provides greater chance to record an accurate time. This does result in data being sent to the servers after a minimum of 10 seconds, so if speed of data is more critical than accuracy then this could be reduced.

Dead Time is set by default to 20 seconds, meaning that after a time is recorded then another passing will not be captured for 20 seconds, beware if using this on short laps or turnarounds. If multiple passings are expected within a shorter time then this can be reduced as necessary. 

Both reaction time and dead time can be configured using Track Box Configuration Rules.

Hits & RSSI

When using the Track Box (Passive) you should also expect less hits compared to a RACE RESULT Decoder with standard antenna, this is due to the communication protocol used between Track Box and Transponder.

The reader will only communicate with each transponder in one of every 5 cycles, this maximises the opportunity for other transponders to communicate with the reader and thus maximising overall read rates. 

Guidelines for RSSI values remain the same as Decoder detection data.