Range Of The Communication; Your Body Affects The Signal Strength; Optimal Direction Of The Internal Transceiver Antenna - ABB Excount II User Manual

4. Using the transceiver
38

4.5 Range of the communication

Direct and completely unobstructed line-of-sight is preferable between
the transceiver and the sensor during communication.
The transceiver can communicate with the sensor within a range
of up to 60 meters. However this may differ depending on external
factors, including the physical and geographical layout at the site or
the presence of radio disturbances in the vicinity. A separate (optional)
external hand-held antenna is available to boost the effective signal
strength and increase the communication distance in special confi-
gurations which require it. However to obtain the best possible signal
strength, see section 4.6 to 4.9 below.

4.6 Your body affects the signal strength

Keep the transceiver as far away as possible from your body (arm-
length), since your body acts to diminish the energy from the trans-
mitter. The antenna is located in the top of the transceiver, so do not
place your hands or other obstructions over this area.
4.7 Optimal direction of the internal
transceiver antenna
The signal strength between the antennas in the transceiver and
sensor are influenced by their orientation to each other. See figure
4.7.1 for the best performance from the transceiver when used alone.
Note that the best reception and maximum range is obtained by poin-
ting the transceiver at approximately right angles to the sensor instead
of directly at it.
270°
Optimal direction of the transceiver internal antenna
0°
180°
Figure 4.7.1
1HSA 801 080-15en EXCOUNT-II Users Manual
90°