5 Site Survey
The PS has a Radio Signal Test mode that monitors the state of the radio link to the CS for site survey. In
Radio Signal Test mode, the frame loss and signal strength of a synchronous slot, and the signal strength of
the other slots can be measured when the PS is monitoring the CS. After installing the CSs temporarily as
planned during site planning, set the PS to Radio Signal Test mode and locate each CS to measure its coverage
area. Then, record the results on the map of the installation site.
Testing the Radio Signal Strength
After locating the CS(s) temporarily, execute the Radio Signal Test using the PS. Directly after entering Radio
Signal Test mode, the PS scans channel 0 for a CS that it can connect to. The channel to be scanned can be
changed by pressing the appropriate keys 0 through 4.
1.
Enter Radio Signal Test mode.
Using the KX-TD7685/KX-TD7695/KX-TD7696
0 to 9
Log No.
To store the scan data
Press 1, 9, and POWER
for more than 2 seconds.
1
9
9
Previous or Next
0 to 4
Channel No.
To survey other slots
To survey specific channel
/
RADIO STRENGTH
<<< MEASURING >>>
RADIO STRENGTH
CH0
*
1
SLOT:06
*
2
SYNC
*
3
L:12
*
4
0005/0100
*
5
*
6
CS-ID:9005301234
0
Display example:
*1
Channel number
*2
Slot number
*3
When a slot is synchronized, "
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".
*6
Error rate (%) = Frame error (0000 to 9999) / Frame counter (0000 to 9999)
´
100
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
Description
Approx. 2%
May receive noise
Approx. 10%
May fail to make/receive calls
Document Version 2009-12
Quick Installation Guide
21
5 Site Survey
