ORBCOMM OG2 Modem Integration Manual iv
Table of Contents
1. INTRODUCTION.............................................................................................................................................. 6
1.1 REFERENCES ......................................................................................................................................................6
2. PHYSICAL DESIGN........................................................................................................................................... 7
2.1 MODULE DIMENSIONS.........................................................................................................................................7
2.2 INTERFACE.........................................................................................................................................................8
2.2.1 User Connector Pin Description Table....................................................................................................8
2.2.2 User Connector Mechanical Information .............................................................................................10
2.2.3 Board Connection.................................................................................................................................12
2.2.4 RF Connections.....................................................................................................................................12
3. RADIO FREQUENCY SECTION ........................................................................................................................ 14
3.1 VHF TRANSMITTER ...........................................................................................................................................15
3.1.1 Transmit Modulation ...........................................................................................................................15
3.1.2 Output Power.......................................................................................................................................15
3.1.3 Output Power Variance........................................................................................................................15
3.1.4 Transmitter Power ...............................................................................................................................15
3.1.5 Frequency Control ................................................................................................................................16
3.1.6 Transmit Frequency .............................................................................................................................16
3.1.7 Occupied Bandwidth ............................................................................................................................16
3.1.8 Transmitter Designator........................................................................................................................16
3.2 VHF RECEIVER .................................................................................................................................................17
3.2.1 Receive Modulation .............................................................................................................................17
3.2.2 Minimum Detectable Signal.................................................................................................................17
3.2.3 Acquisition Frequency Range ...............................................................................................................17
4. POWER SUPPLY ............................................................................................................................................ 17
4.1 POWER USAGE PROFILE .....................................................................................................................................17
4.2 VARIATIONS IN INPUT POWER .............................................................................................................................18
4.3 DIP,INTERRUPTIONS,SURGES,FAST TRANSIENTS ....................................................................................................19
4.3.1 Dip & Interruptions ..............................................................................................................................19
4.3.2 Fast Transients.....................................................................................................................................20
5. ENVIRONMENTAL SPECIFICATIONS AND COMPLIANCE ................................................................................ 21
5.1 OPERATIONAL TEMPERATURE..............................................................................................................................21
