Datasheet

LARA-R2 series - Data Sheet
UBX-16005783 - R15 Electrical specifications Page 30 of 48
4.2.6 2G RF characteristics
The 2G bands supported by each LARA-R2 series module are defined in Table 2, while the following
Table 17 describes the Transmitting and Receiving frequencies for each 2G band according to 3GPP
TS 51.010-1 [13].
Parameter
Min.
Max.
Unit
Remarks
Frequency range
E-GSM 900
Uplink
880
915
MHz
Module transmit
Downlink
925
960
MHz
Module receive
Frequency range
DCS 1800
Uplink
1710
1785
MHz
Module transmit
Downlink
1805
1880
MHz
Module receive
Table 17: 2G operating RF frequency bands
LARA-R2 series modules include a GMSK Power Class 4 transmitter for E-GSM 900 band, GMSK
Power Class 1 transmitter for the DCS 1800 band, 8-PSK Power Class E2 transmitter for all 2G bands
(see Table 2), with output power and characteristics according to 3GPP TS 51.010-1 [13].
LARA-R2 series modules 2G receiver characteristics are compliant to 3GPP TS 51.010-1 [13], with
conducted receiver sensitivity performance described in Table 18.
Parameter
Min.
Typical
Max.
Unit
Remarks
Receiver input sensitivity
E-GSM 900
–110.0
dBm
Downlink RF level @ BER Class II < 2.4%
Receiver input sensitivity
DCS 1800
–109.0
dBm
Downlink RF level @ BER Class II < 2.4%
Condition: 50  source, other settings as per 3GPP TS 51.010-1 [13]
Table 18: 2G receiver sensitivity performance
4.2.7 ANT_DET pin
Pin Name
Parameter
Min.
Typical
Max.
Unit
Remarks
ANT_DET
Output DC current
pulse value
9
µA
Generated by means of the AT+UANTR
command
Output DC current
pulse time length
330
µs
Generated by means of the AT+UANTR
command
Table 19: ANT_DET pin characteristics