Panasonic KX-TDA0141 Quick Installation Manual page 23

5 Site Survey Using the KX-TCA175/KX-TCA255/KX-TCA256/KX-TCA275/KX-TCA355/KX-TD7590
•
The PS will not operate in normal mode if scan data is saved on it. For details on clearing scan
data, refer to "Clearing the Stored Scan Data".
2.
Measure the error rate and 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.
Error Rate
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.
May receive noise
May fail to make/receive calls
PS
Channel no. 0
Radio Signal Strength Levels
Level: 11 to 12
Level: 08 to 10
Level: 03 to 07
Level: 01 to 02
Level: 00
Description
CH0
L:12
CH0
PS
L:08
PS
Better
Good
May receive noise
Receives noise easily or disconnects
Out of range
CH0
L:03
Quick Installation Guide 23