Argus Security SW-SKT-01 User Manual page 4

Measure of the wireless link quality
Wireless link quality between devices can be measured using two indicators:
dB units
Simply decibel units.
RSSI units
RSSI is the acronym of "Radio Signal Strength Indicator" and it is obtained from the measure of the wireless signal quality (in dB units) and the
noise level (still in dB units). In order to simplify the measurement of the wireless signal's quality, RSSI and dB units are spaced out in five
possible "mark" levels (table 1); on the tablet's survey app, levels from Mark 5 to 2 are visualized using four different colours (picture 2); Mark
1 is considered as "no link".
Mark level
Mark 5
Mark 4
Mark 3
Mark 2
Mark 1
Picture 2
In order to work properly, the devices must operate with a signal level quality in the Mark 5 (picture 2, green area) or Mark 4 (picture 2, yellow
area) bands.
Mark 3 band is not recommended.
If the signal's level quality is below Mark 3 (i.e. Mark 2), you must change the position of the devices (either the SGWE or the survey probe
detector).
If the SGWE and the probe detector do not communicate, the survey app will show a warning popup.
You will notice that the signal's value graph on the survey app is traced either in green or, sometimes, in orange:
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dB units
More than 30 dB
From 20 to 30 dB
From 10 to 20 dB
From 0 to 10 dB
Less than 0 dB
Signal's value
graph
Green colour indicates that the wireless signals are received on the SGWE primary antenna.
Orange colour indicates that the wireless signals are received on the SGWE secondary antenna.
RSSI units
More than 20 RSSI
From 13.4 to 20 RSSI
From 6.8 to 13.4 RSSI
From 0 to 6.8 RSSI
Less than 0 RSSI
Excellent
Good
Not recommended
Table 1
Signal's value
L20-SWSKT-0001 (vP.5)
4
Mark 5
Mark 4
Mark 3
Mark 2