Panasonic KX-TDE100 Installation Manual page 174

3.9.5 Site Survey Using the KX-TCA255/KX-TCA256/KX-TCA355/KX-TD7590
Note
Storing the scan data will clear all directory data.
2.
Measure the radio signal strength by moving towards and away from the CS.
Note
•
When the error rate is 2% or more, measure the error rate at the same location at least 5 times.
You must disconnect the CS and then reconnect it to take each measurement. If the error rate is
consistently 2% or more, there may be interference from external wireless equipment. In this case,
the following may happen regardless of the radio signal strength level.
Approx. 2%
Approx. 10%
The above is a rough standard, and may vary depending on the environment.
•
When deciding where to install the CS, priority should be given to an error rate rather than a radio
signal strength level.
•
After installing the CS according to the results of the survey, confirm that calls can be made and
received, and conversations can be heard clearly.
a.
Move to the CS until the radio signal strength level becomes "12".
b.
Move away from the CS and identify the CS coverage area within which the radio signal strength level
is greater than "8". Draw the area on the map.
c.
Move away from the CS and identify the CS coverage area within which the radio signal strength level
is greater than "3". Draw the area on the map.
174 Installation Manual
Error Rate
May receive noise
May fail to make/receive calls
PS
Channel no. 0
Radio Signal Strength Levels
Level: 00
Level: 01 to 02
Level: 03 to 07
Level: 08 to 10
Level: 11 to 12
Description
CH0
L:12
CH0
PS
L:08
PS
Out of range
Receives noise easily or disconnects
May receive noise
Good
Better
CH0
L:03