Specifications

TC35 / TC37 Hardware Interface Description
TC35_37_HD_02_V03.10 - Released Page 16 of 92 21.12.2001
2.1 TC35 / TC37 key features at a glance
Table 1: TC35 / TC37 key features
Feature Implementation
Transmission Voice, Data, SMS, Fax
Power supply Single supply voltage 3.3V – 5.5V
Please refer to Chapter 6.4 for more detailed information
Frequency bands Dual Band EGSM 900 and GSM 1800 (GSM Phase 2+)
GSM class Small MS
Transmit power Class 4 (2W) for EGSM 900
Class 1 (1W) for GSM 1800
SIM card reader External – connected via interface connector
Note: The SIM card reader is not part of the GSM engine
Antenna design 50 Ohm antenna interface. Connectors vary with type of GSM engine:
• TC35: GSC coaxial connector
• TC37: Coaxial switching connector from AMP and antenna pad
Temperature range Normal operation: -20°C to +55°C
Restricted operation: –25° to –20°C and +55°C to +70°C
Storage: -40°C to +85°C
Current consumption
(typical)
Depending on operating mode
• TALK mode (peak) at EGSM 900 / GSM 1800: 1.8A
• TALK mode at EGSM 900 / GSM 1800: 300mA / 270mA
• IDLE mode at EGSM 900 / GSM 1800: 10mA / 10mA
• SLEEP mode: 3mA
• Power Down mode: 50µA
Speech codec Triple rate codec:
• Half Rate (ETS 06.20)
• Full Rate (ETS 06.10)
• Enhanced Full Rate (ETS 06.50 / 06.60 / 06.80)
SMS MT, MO, CB, Text and PDU mode
DATA Transmission rates: 2.4, 4.8, 9.6, 14.4 kbps, non-transparent, USSD
FAX Group 3: Class 1, Class 2
Audio interface Analog voice:
• Microphone
• Earpiece
• Handsfree (supports echo cancellation and noise reduction)