User manual

17
1.3. Radio signal transfer problems
The receiver system is missing signals from one or more sensors, or
only receiving a limited number of signals.
Potential problems:
- Walls or ceilings between sensor and receiver may contain
metallic constructions.
- Sensors and/or receiver may be located on a metallic surface
- Sensor or receiver are situated in locations with high humidity
- Windows between sensor and receiver may contain several
layers of glass or shielding materials or may be covered by
humid moisture.
- Other 433MHz systems may be working within the 20m
operating range
- Interference or jamming signals from radio or TV transmitters
- Electronic or electrical equipment (eg. computer equipment or
magnetrons), operating within the 2-5m operating range
- Low power level of the sensor’s batteries (see 2)
Suggested solutions:
- Modify the locations of the sensor and/or the receiver
- Remove the interfering equipment
2. Communication test
A simple test will check the communication channel between sensor
and receiver:
1. Remove the batteries from the sensor
2. If an entry already exists: remove the sensor from the
temperatur logger application (using the right mouse button)
3. Locate the sensor at ca. 1 m distance to the receiver
4. Insert the batteries in the sensor
5. A correctly working system will add the according sensor entry
to the sensor list within 5 seconds.
Extra information and possible updates can be found on
www.arexx.com (on the forum or through the Temp Logger menu).
Further questions can also be put on our forum,
see www.arexx.com
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