User manual
GTR64  http://www.matrix.es/GTR64 
1.2 Highlights 
Radio Features 
Quad Band GSM/GPRS 
GSM 850/900 Power class 4 (33dBm)   
GSM 1800/1900 Power class 1 (30dBm)   
Mobile Class B   
Extended Measurement Reporting   
Compliant with 3GPP Release 99 Protocol Stack 
Interfaces 
RS232 9–way Dsub 
Expansion Port: 15-way HD-Dsub: 
4 Digital Input/Output 
1 Analog Input 
1 I2C bus 
1 2-wires RS232 UART 
VRTC + Alarm 
USB mini (2.0 Full-Speed End-Point Compliant) 
Power: 5 – 32VDC (RJ11) 
Audio: Handset (RJ9) 
Antenna: 50 Ohms (FME male) 
SIM card reader: 1,8V/3V interface with SIM detection 
General Features 
Power supply: 5 – 32 VDC 
Overall dimensions (excluding connectors): 
77 x 67 x 26 mm 
Temperature range: 
-30°C to +75°C (Operational) 
-40°C to +85°C (Storage temperature) 
Weight: ca. 100g 
Control by AT commands (GSM 27.005, 27.007 plus proprietary commands) 
Data Features 
GPRS Class 10 
Multiple simultaneous PDDP contexts 
GPRS Coding Schemes CS1-CS4 
Transparent and non-transparent CSD up to 9.6 kbps 
Modem Type; V21, V22, V23, V22bis, V26ter, V32, V34, V24 
V42bis compression 
GSM supplementary services supported 
GSM 27.010 Multiplexing Protocol 
USSD 
GTR64 Integrators Manual V.1.2  Pag. 6 
Preliminary. Subject to change without prior notice 










