User's Manual
User Guide | FreeSpeak II™
Page 21
Figure 3-4 A connected beltpack site survey screen
Parameter Meaning
Received Signal Strength Indication
(RSSI)
A measure of the signal strength in a
wireless environment. The higher the
value, the stronger the signal.
Frame Error Rate (FER) A measure of the signal connection
quality. The lower the FER, the better
the signal connection.
Link Quality (LQ) A combined quality metric ranging
from 1 (poor) to 5 (high).
Table 3-1 Key to site survey terms
4) Walk around the antenna with the beltpack, monitoring the beltpack signal
strength and goodness rating at various distances.
The signal strength is shown in the Received Signal Strength Indication (RSSI)
field.
The signal strength number will fluctuate, ranging between 0 - 59 as you
walk through the coverage area, and may even fluctuate as you stand
still. As a rule-of-thumb the best system performance will be obtained
when the signal strength remains at 30 or above. If the signal strength
falls below 30 the beltpack may start losing audio. This is the limit of the
coverage zone.
A high Received Signal strength indication and a high Error rate may
indicate that there is another RF system causing interference.
A beltpack can transmit to an antenna at a range of approximately 500m in good
conditions.
5) Draw a map of the coverage zone for the antenna. The coverage zone is
the area where the signal strength, as a rule-of-thumb, is 30 or above and
the Line Quality is 3-5.
2‐digitRP N
Frameerro rrate Linkquality