Javad LMR400, Руководство пользователя

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Parame-
ter Name Parameter List
CHAN
1Selects the Channel Number: CN = 1 to 32.
Each Channel is defined by three parameters: Car-
rier Frequency, Channel
Spacing and Allowed Output Power level.
CN = 0 is reserved to set up the Frequency Auto-
matic 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 mod-
ulation)
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 modula-
tion) 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)
1 – Seed for Pseudo-Random Sequence Generator
FEC
0 – Disable Forward Error Correction (FEC), a de-
fault setting
1– Enable Reed-Solomon encoding
CHAR
(0 – 255) – defines the ASCI code of the symbol
indicating the end of a data chunk of “Transparent
w/EOT Character” protocol.
ADDR
Indicates the number of address bytes of “STL”
protocol’s data frame.
CLKCORR
0 – Disables Clock Correction algorithm of STL
protocol 1- Enables Clock Correction algorithm of
STL protocol.
LINK FHOP and LINK CHAN commands can be pro-
cessed only if Frequency Map is defined. Auto-
scanning may not start automatically, only when
scanning requested via CLI command (see
LINK CHAN 0 and STATE commands). The frequency
defined by CHAN parameter is not valid if Frequency
Hoping mode is selected. The radio link with GMSK
and 4FSK modulations are used by Non-ArWest pro-
tocols only. Enabling FEC via LINK FEC command pro-
vides different options for different protocols:
• Enables Read-Solomon encoding for frame’s
header used by ArWest proprietary protocols
• Enables Hamming encoding for Trimble and Pa-
cific Crest compatible protocols
• Enables Trellis encod-
ing for Satel compatible protocol
For JAVAD GNSSproprietary protocols, the
Read-Solomon FEC encoding is always applied to
data payload.
• “Half Duplex” Base and “Half Duplex” Remote
protocols are not supported in current release.
LINK ADDR and LINK CLKCORR commands are not
recommended for using on site of End Users.