TAG
Heuer
Timing
Page 6 / 8
6. Transmission
The transmission between Transmitter and Receiver is 200ms, with a precision of +/- 0.13 ms
Once the receiver receives an impulse, the LED of channel (1 to 4) will switching ON during 0.5s
In same time the LED on right will switch ON to the reception signal power
4
Leds
ON
Good
(<
-60
dBm)
3 Leds ON
Acceptable
(-60 à -70 dBm)
2 Leds ON
Low
(-70 à -80 dBm)
1 Leds ON
Very low
(> -80 dBm)
Transmitter and Receiver provides a visual (LED) and audio alarm, should an external input remain in short-
circuit.
This feature allows you to observe the status of TAG Heuer’s new “direct-response” photocells (HL 2-31, HL
2-35 and HL 2-32 – serial number 7000 or higher), and allows the timekeepers to instantly determine if a
photocell is out of alignment.
WARNING
:
For proper operation it is essential that the transmitters and the receiver are not closer
than 2 meters.
WARNING
:
It is forbidden to operate transmitter without antennas, it may damage the electronic radio transmitter.
7. Installation recommendation
For good transmission, it is recommended that antenna are placed 1m above ground
Transmitter/Receiver should be place vertically and antenna in up direction
A direct view between Transmitter and Receiver will improve performance
Protect Transmitter / Receiver in case of rain (with a platic bag) After using the system in high humidy
ambiance (rain), it is recommended to place them on a warm environment (out in the open air) to prevent
any rust or electronics damage
Warning
:
Radio systems using a similar range of frequency (869 MHz) can disrupt the transmission.
It is strongly recommended to test before the race, and have a back-up system.
