Smart SAM3T User Guide V1.52
10
Ver1.52
6.2
RJ45 Socket
Pin
Signals
Description
1
VIN
Input voltage 5Vdc - 32Vdc
2
DCD
Data Carrier Detect
3
DTR/RI
Data terminal Ready/Ring Indicator
4
GND
Common Ground
5
RXD
Serial Data out of the Smart SAM3T
6
TXD
Serial Data into the Smart SAM3
7 CTS
Clear to Send
8
RTS
Ready to Send
6.3
Mini USB Connector
Pin
Signal
1
Vusb
2
D-
3
D+
4
N/C
5
GND
6.4
FME-Male 50Ω Antenna Connector
The FME male antenna connector is a 50Ω impedance antenna connector. The antenna used for the Smart
SAM3T must have 50Ω impedance.
6.5
SIM Holder
The SIM holder is designed to accommodate a mini-SIM card. The SIM card can either be 3V or 1V8 SIM. To
insert the SIM card, remove the door by sliding it back toward the end. Make sure the SIM card faces the
right way as indicated on the box. Voltage levels over this SIM interface complies with 3GPP standards
6.6
LED Status
The LED indication has the following status for different SAMMODE:
SAMMODE=0
Led is handled by Module Software (factory default) with the following timings:
-Not registered: always on
-Registered in idle: blinking 1s on and 2s off
- Modem in a call: always on
