25
3.3. 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
microwave ovens), 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.
4. 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.
Put the batteries back into 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
E
N
G
L
I
S
H
E
N
G
L
I
S
H
