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Required Distances between Equipment
Maintain the distances listed below between equipment in order to prevent noise, interference or the
disconnection of a conversation. (The distance may vary depending on the environment.)
Equipment
Distance
CS and office equipment such as a computer, telex, fax
machine, etc.
More than 2 m
CS and PS
More than 1 m
Each CS
More than 3 m
Each PS
More than 0.5 m
PBX and CS
More than 2 m
If multiple CSs cover the same area, the phone connection may become noisy or the number of possible
simultaneous calls with PSs may decrease due to interference between the CSs. For details, refer to "2.9.5 Site
Survey—Testing the Radio Signal Strength".
The required distance between CSs may vary depending on the environment of the installation site and
conditions in which the wireless system is used. Conduct a site survey to determine the appropriate distance.
RF Specification
Item
Description
Radio Access Method
MultiCarrier TDMA-TDD
Frequency Band
1920 MHz to 1930 MHz
Number of Carriers
5
Carrier Spacing
1728 kHz
Bit Rate
1152 kbps
Carrier Multiplex
TDMA, 24 (Tx12, Rx12) slots per frame
Frame Length
10 ms
Modulation Scheme
GFSK
Roll-off factor=0.5 50 % roll-off in the transmitter
Data Coding for Modulator
Differential Coding
Voice CODEC
32 kbps ADPCM (CCITT G.726)
Transmission Output
Peak 0.12 W
CAUTION
•
The CS should be kept free of dust, moisture, high temperature (more than 40 °C), low temperature
(less than 0 °C), and vibration, and should not be exposed to direct sunlight.
•
The CS should not be placed outdoors (use indoors).
•
The CS should not be placed near high-voltage equipment.
•
The CS should not be placed on a metal object.
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Installation Manual
2.9.1 Overview
Summary of Contents for KX-TDA30
Page 248: ...248 Installation Manual 4 1 5 Troubleshooting by Error Log ...
Page 249: ...Section 5 Appendix Installation Manual 249 ...
Page 256: ...256 Installation Manual 5 1 6 PSMPR Software File Version 5 0xxx ...
Page 257: ...Index Installation Manual 257 ...
Page 263: ...Installation Manual 263 Notes ...