Kenwood NEXEDGE NX-200 Function Reference page 208
Hide thumbs
Also See for NEXEDGE NX-200:
- Service manual (172 pages) ,
- Instruction manual (136 pages) ,
- Brochure (12 pages)
Table of Contents
8 NXDN CONVENTIONAL SYSTEM
8.14 Site Roaming
When the transceiver receives a synchronization signal from the repeater, the transceiver basically behaves as follows.
Tranceiver
A: The repeater in an NXDN Conventional system transmits a synchronization signal at regular time intervals. Or, the
repeater in an NXDN Conventional system transmits a call signal according to a transmission request from another
transceiver.
B: For example, the transceiver in the zone configured as Site Roaming or Site Roaming with RAN detects an adequate
RSSI level on Channel 4.
C: The transceiver activates Site Roaming Link Delay Time.
D: Upon elapsing the length of time configured for Site Roaming Link Delay Time, the transceiver goes around all the
channels and searches for the channel having the strongest RSSI level.
E: After going around all the channel, the transceiver migrates to the channel having the strongest RSSI level (for
example, Channel 3) and examines whether the received RAN code matches the RAN code preconfigured for the
channel.
•
If "Site Roaming" is configured for Zone Type:
If the received RAN code matches that preconfigured for the channel, the transceiver unmutes the speaker and
the channel will be the Revert Channel.
If the received RAN code does not match that preconfigured for the channel, the transceiver continues to mute
the speaker but the channel will be Revert Channel. Then the transceiver migrates to the channel having the
second strongest RSSI level (for example, Channel 2) and examines whether the received RAN code matches
that preconfigured for the channel. If the received RAN code matches the RAN Code preconfigured for the
channel, the transceiver unmutes the speaker and the channel becomes a Revert Channel.
FUNC (K)/Ver 4.00
A
Synchronization sign
TX
Repeater 1
RX
TX
Repeater 2
RX
TX
Repeater 3
RX
TX
Repeater 4
RX
1 sec.
TX
Repeater 5
RX
Roaming
D
Channel 5 -
B
Channel 4 -
E
Channel 3 -
Channel 2 -
Channel 1 -
C
Link Delay Time
Figure 8-8 Site Roaming
D
-100
-115
> -125
Channel 4
5
1
Figure 8-9 Threshold Level
H
Roaming
F
G
Dropout Delay Time
-93 dBm
-95
Threshold Level
2
3
CONTENTS
INDEX
174
Chapters
Table of Contents
