Command Line Interface
Modem Commands
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2.2. LINK
The LINK command is responsible for configuring radio’s operation mode. It has six parameters listed
below.
LINK [
Parameter Name
] [
Parameters List
] [
/?
]
Parameter Name
Parameter List
CHAN
Selects the Channel Number: CN = 1 to 32.
Each Channel is defined by three parameters: Carrier Frequency, Channel
Spacing and Allowed Output Power level.
CN = 0 is reserved to set up the Frequency Automatic scanning mode.
The LINK CHAN 0 command also forces the radio modem to continue scanning
starting from the channel currently selected by automatic scanning algorithm.
In Automatic scanning mode, to check the channel currently used or scanned,
the STATE command must be used
FEC
0 – Disable Forward Error Correction, a default setting (see note below)
1 – Enable Forward Error Correction (see note below)
FHOP
(1 – 32) – Frequency Hoping Pattern number LINK FHOP command can be processed
only if the Channel Map (up to 32 channels) is defined by AWLaunch or by MAP
command.
MOD
1 – DBPSK
2 – DQPSK, a default settings
3 – D8PSK
4 – D16QAM
5 – GMSK
6 – 4FSK
PWRB / PWRW
0 – Automatic Transmit Power control, a default setting for Remote units
(15 – 30) / (30 – 1000) – RF output Power in dBm / mW
PROT
1 – “Simplex Receiver” a default setting (see note below)
2 – “Simplex Transmitter”
3 – “Half Duplex” Base (reserved)
4 – “Half Duplex” Repeater (reserved)
5 – Not used
6 – Not used
7 – “TRMB Receiver” (used with GMSK modulation)
8 – “TRMB Transmitter” (used with GMSK modulation)
9 – “Transparent w/EOT” Repeater (used with GMSK and 4FSK)
10 – “Repeater” (ArWest Proprietary Simplex)
11 – “TRMB Repeater” (used with GMSK modulation)
12 – “Transparent w/EOT” Receiver (used with GMSK and 4FSK)
13 – “Transparent w/EOT” Transmitter (used with GMSK and 4FSK)
14 – “STL Receiver” (used with 4FSK modulation)
15 – “STL Transmitter” (used with 4FSK modulation)
16 - Not used
17 - “Fast Async” Receiver (used with GMSK and 4FSK)
18 - “Fast Async” Transmitter (used with GMSK and 4FSK)
19 - “Transparent w/EOT Character” Receiver (used with GMSK and 4FSK)
20 - “Transparent w/EOT Character” Transmitter (used with GMSK and 4FSK)
PWRB / PWRW
(15 – 30) / (30 – 1000) – RF output Power in dBm / mW
RTR
0 – No Retransmission in the wireless cluster
1 – There is Repeater in the wireless cluster, valid for Base only
SCRAM
0 – No Scrambling (a default setting)
(1 – 255) – Seed for Pseudo-Random Sequence Generator
