Operating Manual 6175.4760.02 – 01
4.3
M3SR Series 4100
Automatic Link Establishment 2
nd
Generation (ALE-2G)
4.3 Automatic Link Establishment 2
nd
Generation (ALE-2G)
4.3.1
Basics of ALE-2G
The ALE-2G mode (Automatic Link Establishment 2
nd
Generation) affords the radio operator
the following features which automate and simplify the task of establishing communications
with a distant station:
•
Selective call and link with another station using only that station's address
•
Automatic determination of the best calling channel using LQA (Link Quality Analysis)
•
Link with a network of stations
•
Automatic transmission of a message to a distant station or group of stations (AMD =
Automatic Message Display)
•
Assignment and grouping of channels into so called scan groups and assignment of
scan groups to networks or stations
•
Scanning of channels of the assigned (scanning) scan group at a rate of 2 chnPs (Chan-
nels Per Second) or 5 chnPs
4.3.1.1
Selective Call and Handshake
Each station in an ALE network has its own unique address (call sign). When calling another
ALE station, the calling station transmits the target address on the selected channel. When
the called station hears its own address, it stops scanning and responds to the calling station.
The calling station then transmits an acknowledgement (two way handshake) and the two
stations are linked. The operators of the calling and the called stations are notified that the
link has been established and can begin passing traffic.
4.3.1.2
Link Quality Analysis and Automatic Link Establishment
During link establishment LQA data may be exchanged between stations in addition to the
addresses. These LQA data are in the form of a number which represents the quality of the
transmission path between stations.
When the station operator wishes to make a call, the link is established automatically using
the accumulated LQA data to determine the best available channel out of the scan group as-
signed to the destination address (next call scan group).
4.3.1.3
Message Transmission
ALE provides for operation in an AMD mode, which enables operators to send messages up
to 90 characters long to other stations when linking. Such a message is subject to configu-
ration and is shown on the display.
Summary of Contents for M3SR 4100 Series
Page 15: ...M3SR Series 4100 Documentation Overview xiv Operating Manual 6175 4760 02 01...
Page 48: ...M3SR Series 4100 Index 34 Operating Manual 6175 4760 02 01 ZF4401 mod 02 2 10...
Page 70: ...M3SR Series 4100 Radio Control 1 22 Operating Manual 6175 4760 02 01...
Page 116: ...M3SR Series 4100 Example Configuration 2 46 Operating Manual 6175 4760 02 01...
Page 336: ...M3SR Series 4100 Priority Channel 3 220 Operating Manual 6175 4760 02 01...
Page 696: ...M3SR Series 4100 Remote Control 8 4 Operating Manual 6175 4760 02 01...
Page 697: ...Operating Manual 6175 4760 02 01 9 1 M3SR Series 4100 Drawings 9 Drawings...
Page 706: ...M3SR Series 4100 Drawings 9 10 Operating Manual 6175 4760 02 01...
