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Table Of Contents
SARA-R4 series-AT commands manual
UBX-17003787 - R16
14System features
Page 167 of 401
Parameter Description Range Default Notes
<TX_channel> range LTE band EARFCN range
[138650-139649] TDD 40 [38650-39649]
[139650-141589] TDD 41 [39650-41589]
[231072-231971] FDD 65 [131072-131971]
[231972-232671] FDD 66 [131972-132671]
[232672-232971] FDD 68 [132672-132971]
[232972-233121] FDD 70 [132972-133121]
[233122-233471] FDD 71 [133122-133471]
[234002-234181] FDD 85 [134002-134181]
Table 10: <TX_channel> parameter range
The "+CME ERROR: operation not supported" or
"+CME ERROR: 4" error result code will be provided in
these cases (depending on the +CMEE AT command
setting):
o A value not belonging to the above ranges is
set
o The TX channel parameter value belongs to a
non-supported RAT (2G or 3G or 4G RAT) or
band
Avoid channels that would put the TX waveform
outside the band due to SC-FDMA modulation
bandwidth.
The default channel will be equal to 32 if the GSM
RAT is supported, in the other cases it will be the
same as the central channel of the lower LTE band
supported by the module.
<power_
control_level>
Power control
level
-56 ÷ 24 5 For 2G RAT: PCL (power control level). The allowed
values depend on the related <TX_channel> value: lower
numbers means higher power level.
o [0-19]: GSM 850 and 900, if <power_control_level>
is less than 5 the handling is the same for <power_
control_level>=5
o [0-15]: DCS 1800 and PCS 1900
In case <modulation_mode> is set to 2 (8-PSK
modulation) the range is as below. Other values are valid
but behave as the indicated level:
o [0-19]: GSM 850 and 900 if <power_control_level>
is less than 8 the handling is the same for <power_
control_level>=8
o [0-15]: DCS 1800 and PCS 1900; if <power_control_
level> is less than 2 the handling is the same for
<power_control_level>=2
For 3G RAT: absolute output power [dBm]
o [-56 ÷ 24] for all the bands
For 4G RAT: absolute output power [dBm]
o [-40 ÷ 24] for all the bands
Only the values indicated in the above ranges are
valid, otherwise an error result code will be provided
("+CME ERROR: operation not supported" or "+CME
ERROR: 4" depending on the +CMEE AT command
setting).
<training_
sequence>
Training
sequence
0 ÷ 7 5 Training sequence to be used (to be changed only in case
of link with network simulator, else use default)
In 3G / 4G RAT the values is unused.
<modulation_
mode>
Modulation mode 1 ÷ 2 1 Modulation mode:
o 1: GMSK normal modulation including the training
sequence