U-Link TRx User Guide
Ref.
09-03-V1.0
p
7
R/W
S251
Over the air format 0
Æ
transparent mode
1
Æ
DSNP mode
1
R/W S252 CSMA
mode
0
Æ
Disable CSMA mode
1
Æ
Enable CSMA mode
Check if channel is free with RSSI before
transmitting. Response is “OK” if channel
is free, and “KO” if channel is busy.
0 1
R/W
S253
CSMA mode RSSI
threshold
S253=-xxxdBm<cr><lf> with xxx
decimal value.
The RSSI range is –130dBm to –70dBm
-70 1
R/W
S254
RF link speed
0
Æ
4800 bps
1
Æ
7680 bps
2
Æ
9600 bps
0 1
R/W S255 Squelch
0
Æ
High ( as low as possible)
1
Æ
Medium (about -114dBm)
2
Æ
Low ( -60dBm TBC)
1
Serial link management
The serial link configuration is 38400 bits/s, 8 data bits, no parity, 1 stop bit.
R/W
S214
Command time out Time out duration for detecting the +++
pattern, unit in ms. From 3 up to 240ms
100
Miscellaneous
R/W S233 Transmited
Call
Sign
S233=NZI206211
(FCC ID + product reference)
NZI206211 1
R/W
S234
Call sign activation 0
Æ
disabled
1
Æ
enabled
When enabled, transmit to the air the
FCC ID by using international Morse
code, with a carrier at 1200Hz for short
or long. The Morse code data rate shall
be between 20 and 25 words per minute.
0 1
R/W
S235
Serial Number
The serial number is made up of 11
digits: yyyywwnnn.
Where :
yyyy : year
ww : week in the year
nnn : number in the week
00000000
000
R/W
S236
Date of the last
configuration
8 digits: yyyymmdd
Where:
yyyy : year
mm: month
dd: day
00000000
R/W S237 Owner
10
characters
max
Blank
Note 1: Only specified for US version. It’s mandatory to fix ATS254=2 (datarate = 9600bps) when using the equipment in US.
Electrical Specifications
