Technical Details; Connection To A Pc Or Timer; Data String Protocol; Error Codes - RaceAmerica T-Link 3.0 Wireless Quick Start Manual

TECHNICAL DETAILS

Connection to a PC or Timer:

The output of the 4520UIDZ USB Wireless
unit has the following:.

Data String Protocol:

Data strings are sent from the 4520UIDZ
unit to provide timing timestamps from each
track sensor, battery charge level in each T-Link
3.0 unit, and RF Data Integrity level of the
wireless communications between the T-Link
3.0 units. The data strings are always terminated
by a 'carriage return' (cr) character and are 11
characters in total length.
<id> is the ID code of the T-Link 3.0 - A thru G
are valid
<timestamp> is a 9-digit number for timing use
<error code> is a single digit number explained
under Error Codes
<rev level> is a 3-digit number of the Revision
Code of the T-Link 3.0
<batA> is a single digit number of the Battery
Charge Level of a T-Link 3.0 unit
<rfA> is a single digit number of the RF
Integrity Level of a T-Link 3.0 unit
<id> <timestamp> cr
ZB <bA><bB><bC><bD><bE><bF><bG><bZ> cr
ZW <rA><rB><rC><rD><rE><rF><rG> 0 cr
<id> E <error code> 0000000 cr
<id> R <rev level> 00000 cr

Error Codes:

When a condition occurs interrupting normal
T-Link 3.0 operation, an error message is sent by
the 4520UIDZ unit. T-Link 3.0 are self-correcting
devices and can with stand continuous interruption
of up to 10 seconds with 100% timing accuracy.
RaceAmerica 5840 T-Link 3.0 Wireless
The error codes are sent in the format of:
<id> E <error code> 0000000
(example: AE3000000)
E1 - Bad trigger data on ID B, C, D, E, F or G
E2 - Greater than 10 sec since last good data
received from ID B, C, D, E, F or G
E3 - Nothing received from ID A during the
last request
E4 - Greater than 10 sec since last good data
received from ID A
E5 - Math overflow during calculation on
ID B, C, D, E, F or G
All error messages are realtime during
normal operation with different levels of urgency.
Errors E1, E3, and E5 indicate local interference
effecting the wireless communications or loss of
signal. These are error messages to alert the user
of intermittent interference and do not effect the
accuracy of the timing system unless the error codes
continue for more than 10 seconds of operation.
Errors E2 and E4 also indicate local interference
effecting the wireless communications or loss of
signal unless these error codes are preceded by 10
seconds of continuous error codes.

MAINTENANCE

To insure uninterrupted operation on race day,
it is suggested to keep track of battery usage hours
so as to have fully charged batteries. To maintain
the highest level of timing accuracy and minimize
false trips, annual preventive maintenance and
calibration should be performed on all system track
sensors and beam emitter units.

SPARE PARTS

Further to minimize race program interruptions,
RaceAmerica recommends some spare parts. A
spare emitter/sensor pair should be available in the
event of an unfortunate accident during a program.
Contact RaceAmerica for availability and pricing
of spares items.
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