Hardware Guide
Table Of Contents
- Introduction
- 2. Overview
- 3. GE865 Mechanical Dimensions
- 4. GE865 module connections
- 5. Hardware Commands
- 6. Power Supply
- 7. Antenna
- 8. Logic level specifications
- 9. Serial Ports
- 10. Audio Section Overview
- 11. General Purpose I/O
- 11.1. GPIO Logic levels
- 11.2. Using a GPIO Pad as INPUT
- 11.3. Using a GPIO Pad as OUTPUT
- 11.4. Using the RF Transmission Control GPIO4
- 11.5. Using the RFTXMON Output GPIO5
- 11.6. Using the Alarm Output GPIO6
- 11.7. Using the Buzzer Output GPIO7
- 11.8. Indication of network service availability
- 11.9. RTC Bypass out
- 11.10. External SIM Holder Implementation
- 12. DAC and ADC section
- 13. Mounting the GE865 on your Board
- 14. Packing system
- 15. Conformity Assessment Issues
- 17. Document History
GE865 Hardware User Guide
1vv0300799 Rev.15– 2012-04-23
Reproduction forbidden without Telit Communications S.p.A. written authorization - All Rights Reserved page 41 of 77
7.4. GSM Antenna - Installation Guidelines
• Install the antenna in a place covered by the GSM signal.
• If the device antenna is located greater then 20cm from the human body and there are no
co-located transmitter then the Telit FCC/IC approvals can be re-used by the end product
• If the device antenna is located less then 20cm from the human body or there are no co-
located transmitter then the additional FCC/IC testing may be required for the end
product (Telit FCC/IC approvals cannot be reused)
• Antenna shall not be installed inside metal cases
• Antenna shall be installed also according Antenna manufacturer instructions.