Panasonic KX-NCP0158 Quick Installation Manual page 33

5 Site Survey Using the KX-TCA175/KX-TCA255/KX-TCA256/KX-TCA275/KX-TCA355/KX-TD7590
Using the KX-TD7590
Press 1, 9, and POWER
for more than 5 seconds.
Display example:
RADIO STRENGTH
<<< MEASURING >>>
*1
Channel number
*2
Slot number
*3
When a slot is synchronised, "SYNC" is displayed.
*4
Radio signal strength level (12 to 00)
*5
Frame error (0000 to 9999)/Frame counter (0000 to 9999). Frame error indicates the number of errors out of 10 000 radio signal
receptions. An increased number of frame errors indicates greater radio signal interference and more frequent noise during
conversation. The ideal number of frame errors is "0000".
Error rate (%) = Frame error (0000 to 9999) / Frame counter (0000 to 9999) ´ 100
*6
Note
•
Storing the scan data will clear all phonebook data.
•
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 for Establishing Conversations Using PSs
Error Rate
Approx. 2%
Approx. 10%
Error Rate for Air Synchronisation between CSs
Error Rate
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 "5". Draw the area on the map.
To survey other slots
/
Previous or Next
To store the scan data
* * *
CH0 1 SLOT:06 2 SYNC 3
L:12 0000/0100
* * *
4 5 6
CS-ID:9005301234
May receive noise
May fail to make/receive calls
May be reset due to synchronisation failure of CSs
To survey specific channel
Channel No.
0 to 9
Log No.
0 to 9
Description
Description
Quick Installation Guide 33