Telemetry
What functions does the telemetry offer?
For gas cars, the telemetry system offers head temperature, battery voltage, rpm or speed, and lap
time. For electrics, the systems offers rpm, motor or battery temperature, main battery or receiver
battery voltage, and lap times.
How does the lap timer work?
An infrared lap trigger is placed on the edge of the track with its beam facing outward across the
track. An infrared sensor is mounted in the car and each time the car passes the beam a precise lap
time is recorded.
How accurate is the head temperature for nitro engines?
The reading is accurate to within one degree of the actual temperature. A contact type thermister
is mounted at the base of the head and gives real time temperature to your pit man via the
handheld unit. This is a huge benefit for gas car racers.
If I plug in all the telemetry options then there is no place to plug in my personnel
transponder?
The telemetry sensors actually plug into a telemetry module, which in turn plugs into your
receiver. If all of your receiver ports are already being used, you can simply use a Y-harness
(SPM1516) to allow a personal transponder to be plugged in.
I'd like to monitor my 2-cell Li-Po receiver pack with the telemetry to prevent damaging my
pack, over-discharging it. Can this be done?
Yes. In fact, by presetting the voltage alarm to 6.6 volts (for a 2-cell pack), when the critical low
voltage point is reached, the handheld unit will vibrate, indicating the need to stop using the
battery. Spektrum telemetry can be a real Lipo saver!
How does the voltage sensor hook up?
The voltage reading is actually taken internally. Whatever voltage the telemetry module is being
powered by is the voltage that will be displayed on the hand-held unit, thus you automatically get
the receiver pack voltage. A harness is provided that can be soldered to another source (like the
main battery that powers the motor) if you wish to monitor the voltage of something other than
the receiver pack voltage.
How many laps will the handheld unit record?
The handheld unit will record and display up to 99 individual laps giving lap time to .01 seconds
for each lap.
Can Spektrum cause interference with other non-Spektrum radios or can a non-Spektrum
radio cause a Spektrum system interference?
Spektrum operates in the 2.4GHz ISM band. That's 2,400MHz. Because this frequency band is
located so far away from our currently used 72MHz, 75MHz, 27MHz and 53MHz systems,
Spektrum and conventional systems have no effect on each other.
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