Bedienungsanleitung Spektrum DX8 (Seite 19 von 42) (Englisch)

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5. From the main screen rotate the roller to access the telemetry screen and

verify the ﬂight log data and receiver voltage displays.

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The TM1000 includes a temperature and external voltage sensors. Optional RPM

sensors are available for Gas/Glow and electric brushless models to monitor RPM.

Temperature Sensor

To monitor the temperature of most any component, secure the sensor on the

object. It must come into contact with the surface to get an accurate temperature

reading. You can loop the temperature sensor around the engine’s cylinder head

to assist in tuning an engine. To monitor battery temperature, you can wrap the

sensor around the battery.

The mounting position of the sensor, especially on gas or glow engines, will

result in different temperature readings. So it’s important to experiment with

different positions.

Installation

Insert the temperature sensor connector into the port labeled TEMP/VOLT.

The temperature sensor is now active and the actual temperature displays

on screen.

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External voltage telemetry is commonly used to monitor ﬂight pack voltage or

you can monitor ignition batteries on gas engine equipped aircraft. You can set

warnings to prevent over-discharging batteries.

Installation

Plug the connector of the voltage sensor into the TEMP/VOLT port in the

Telemetry module.

Attach the opposite ends of the voltage sensor (stripped wires) to the

voltage source you wish to monitor.

Note the polarity (Red = + positive /Black = - Negative).

Typically, you can solder the wires to the battery connector. At this point the

External voltage displays on the telemetry screen.

Note: A Y-harness is provided if you want to use temperature and voltage

sensors simultaneously.

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Two RPM sensors are available: SPMA9569 for nitro and gas engines,

SPMA9558 for brushless electric motors.

Engine RPM Sensor

The optional engine RPM sensor mounts inside the backplate of aircraft engines.

The sensor picks up the crankpin as the engine rotates giving accurate RPM.

Additionally, you can use this sensor as an RPM pickup on any rotating gear/

collar or shaft that has a steel setscrew or other magnetic metal by locating the

sensor within 5 mm of the rotating steel object.

Note: On some engines you may need to space the sensor further away

from the backplate. The sensor picks up the crankpin only; on some

engines if the sensor is too close, it will not distinguish the crankpin from

the crank weight.

Installation

Install the backplate sensor in the backplate.

Install the connector into the RPM port in the TM1000.

Testing

Turn the transmitter and receiver on and scroll to the RPM telemetry screen.

Rotate the engine rapidly and the RPM should register on the screen.

The RED LED on the TM1000 indicates the sensor is picking up properly.

You may need to adjust the sensor’s position to optimize the pickup. Move

the sensor closer or farther away until you have a reliable RPM pickup.

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