1. Connect the antenna directly to the antenna cable of the myDatalogNANO Ex (see "Overview"
Important note: Do not apply too much force when tightening the antenna. Do not use
any tools to tighten the antennas; tighten the antenna manually.
The following step is not mandatory.
2. Check whether the connection to the myDatanet has worked correctly (see "Testing
communication with the device" on page 55).
7.4.3 Optimum antenna positioning for assembly in a shaft
7.4.3.1 Typical influences on the signal quality
Steel cover
up to -30dBm
Concrete cover
approx. -10dBm
Environmental influences
up to -15dBm
Installation height of the antenna
approx. -5dBm/depth of 15 cm
Vertical/horizontal alignment
approx. -10dBm
Horizontal alignment
up to -15dBm
Centre/edge of the shaft
approx. -10dBm
Other influences
Transmission power of the network operator
Signal losses compared to the reference measurement
Note: Practical example:
GSM level
Position
-67dBm
Reference measurement outside the shaft
-103 dBm
Measurement at a depth of 1.20 m
-95dBm
Vertically on the edge of the shaft at a depth of approx. 15 cm
-83dBm
Centre of the shaft, horizontal on the steel fitting
-89dBm
Antenna turned by 90°
-78dBm
Centre of the shaft, vertical
-75dBm
Plastic pipe used instead of steel fitting
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