Astrodev Li-1 radio - Astronautical Development LLC
Contents
1. TDI 3 3VDI ya M 2 TDO 9 10 Header 5X2 Figure 3 Programming Port Schematic Diagram The programming adapter provided with the radio converts the 1 27mm connector to a standard 0 1 JTAG header The JTAG adapter plugs inline with the radio with the majority of the adapter pointed away from the Li 1 radio In the following figure demonstrates the proper mating of the JTAG adapter Astronautical Development LLC Li 1 User Manual Revision 0 4 9 1 2009 4 of 7 Figure 4 JTAG Adapter Plug Demonstrations COMMUNICATING WITH THE LITHIUM RADIO Refer to AstroDev radio interface application note for detailed instructions RADIO CONFIGURATION PROGRAM Refer to radio configuration program application note for detailed instructions Astronautical Development LLC Li 1 User Manual Revision 0 4 9 1 2009 o of 7 DIMENSIONS AND FORM FACTOR For detailed dimension information please refer to IGS model on www astrodev com ime 8 07 P 62 ji Figure 5 Li 1 Radio All dimensions in mm RECOMMENDED FOOTPRINT POs G Aad 32 9 Figure 6 Recommended PCB Footprint dimensions in mm Please refer to www astrodev com for footprints in PCB layout programs Astronautical Development LLC Li 1 User Manual 6 of 7 Revision 0 4 9 1 2009 Mounting of the Li 1 module using hand soldering is recommended An iron temperature of 350 C should be used with IPC recom2. Current Sink Low L Tow 1 RF Interface Symbol Min Nom Max Units RF Output 28 PHYSICAL CHARACTERISTICS Mas J 48 5 pg y Height H 00 10 mm Widh J W 32 33 mm 64 Please refer to IGS file information at www astrodev com for physical characteristics INTERFACE PIN DESCRIPTION Interface Pin Name RESET 6 Amplifier Voltage RF GND 8 Amplifier Ground 1 0 0 0 0 0 RF GND JJ 9 AmplifierGround 0 O O Astronautical Development LLC Li 1 User Manual Revision 0 4 9 1 2009 3 of 7 LITHIUM MODULE SCHEMATIC DESCRIPTION PCB TX Uart L TX arr m l4 Config Pin 1 RX Uart 2 Conti 13 Config Pin 2 RESET 3 RX UART Contig 2 12 External Event 4 RESET External Event T WCSY S 5 ps NC RADIO RAW VOLTAGE IN 6 AMP RADIO RAW VOLTAGE IN 7 AM GNDI 8 G RF GNDI o E 2 RF GND e i GNDI Li 1 Mount Module Figure 2 Lithium PCB Mount Module Schematic Diagram PROGRAMMING PORT PIN DESCRIPTION Program Pin Pin JTAG Processor Reset JTAG Clock JTAG 3 3V Power JTAG Data In JTAG Test Mode Select JTAGDataOu JTAG Data Out LITHIUM MODULE PROGRAMMING PORT SCHEMATIC DESCRIPTION Prog DATA CLOCK 11 3 ML RSINM DATA 11 S ML
3. electronic components You can protect against ESD and discharge static electricity from your body by touching a metal grounded object Such as an unpainted metal surface such as your antistatic surface before you interact with anything electronic devices When connecting an antenna or power plug to the Li 1 you should always ground both yourself and the CubeSat structure before connecting it You can also take the following steps to prevent damage from electrostatic discharge When unpacking the Li 1 from its shipping carton do not remove the radio from the antistatic packing material until you are ready to install the component Just before unwrapping the antistatic package be sure to discharge static electricity from your body by wearing an antistatic wrist strap When transporting the Li 1 first place it in an antistatic container or packaging Handle the Li 1 static safe area If possible use antistatic floor pads and work bench pads TRADEMARKS In progress DISCLAIMER All information in this document is subject to change at anytime Look for continued updates at http www astrodev com Lithium radios are sold as test devices and require users to gain experimental license from the FCC for use in terrestrial and CubeSat satellite missions NOTES Astronautical Development LLC Li 1 User Manual Revision 0 4 9 1 2009 7 of 7
4. ERFACE PIN DESCRIP TION cues a duc oe dev dard uu douce 3 LITHIUM MODULE SCHEMATIC 4 PROGRAMMING PORT PIN DESCRIPTION LLL e cle llle rc cl llerc eui e eere na semana am oaa a a sanas a nnmnnn nnna 4 LITHIUM MODULE PROGRAMMING PORT SCHEMATIC DESCRIPTION 4 COMMUNICATING WITH THE LITHIUM 5 RADIO CONFIGURATION 1c a rauca danian eiaa Coup v vod up bae encre 5 DIMENSIONS AND FORM FACTOR ductu avv dap era e eo oe tu 6 RECOMMENDED FOOTPRINT 4 41 6 PROTECTING AGAINST ELECTROSTATIC DISCHARGE 7 S 7 DISCLAIMER eR 7 NOTES coton DIO Oen e 7 Astronautical Development LLC Li 1 User Manual Revision 0 4 9 1 2009 2 of 7 ABSOLUTE MAXIMUM RATINGS Operating temperature 30 0 to 70 0 DC Amplifier Voltage 50 90 DC Amplifier Current Cle DC 3 3V Radio Voltage NN Input Voltage Logic High Input Voltage Logic Low 0 0 066 Current Source High
5. mendations reference documents IPC7711 Place the module precisely on the pads Start with a cross diagonal fixture soldering e g pins 14 and 9 and then continue from left to right Thermal compound should be applied to the thermal conduction area under the module The thermal conduction area should include through hole vias that connect to a ground plane to promote thermal dissipation Proper analysis is required to ensure that the module is able to properly dissipate heat within its application environment Reflow or wave soldering of the Li 1 module is not recommended Thermal dissipation through the module heatsink occurs in high temperature environments resulting in inconsistent soldering joints Conformal coating or casting of the module is permitable as long as thermal analysis is performed to realize the new thermal environment The module should be operated at as low temperature as possible toward a nominal 20 C to increase overall efficiency and precise operation PROTECTING AGAINST ELECTROSTATIC DISCHARGE CAUTION Disconnect the Li 1 radio from power source before removing from operating environment Electrostatic discharge ESD events can harm electronic components inside the Li 1 Under certain conditions ESD may build up on your body or an object such as an antenna and then discharge into another object such as the Li 1 To prevent ESD damage you should discharge static electricity from your body before you interact with any
6. ted vehicles Remote embedded systems Features FSK GMSK transceiver Frequencies 130 450MHz Input voltages o Digital 3 3V o Radio power supply 5 9V Output transmit power 250 mW 4 W Power usage o Receive lt 200 mW o Transmit lt 10 Data rate 9 6 kbps Protocol support AX 25 Serial interface 3 3V UART Form factor o SMT module 32 mm x 62 mm Operating Temperature 30 to 70 Options AES 128 or 256 Encryption Connector options RA SMA MCX For more information contact info astrodev com Li 1 emits RF radiation that may interfere with the use of other devices Users must maintain proper licenses during operation Li 1 is static sensitive take the necessary precautions Li 1 requires proper termination of transmitter in 50 Ohm load during operation Transmission power is configurable by the user Maximum is noted 2 Higher data rates require special licensing 38 4kpbs 76 8kbps Encryption not AX 25 compliant O Astronautical Development LLC WWW astrodev com TABLE OF CONTENTS ABSOLUTE MAXIMUM BATIN S caet taxa kixra va de died une au Tu nica ua eu uta nn nnmnnn nnmnnn CER Rue aha 3 PHY SICAL CHARACTERISTICS lt 3 INT
7. vww astrodev com Overview The Lithium radio product line provides a CubeSat compatible communication system for extreme environment applications Lithium radios feature on the fly selectable frequency selection and output power They are compatible with standard amateur radio ground stations capable of communication at 9600 bps or higher bit rates using GMSK modulation The Lithium series radios Li 1 are half duplex radios with adjustable communications parameters Custom frequencies and deviations are available per customer requirements The Lithium series radios are available as an SMT module that be placed on a half size PC 104 board or can be integrated into larger more complex systems without incurring RF complexity in host products A digital command and data interface is provided to the radios Through this interface the radio is configured data is received and data is sent for transmission The interface protocol is serial UART and configurable up to 115 2 kbps A packet protocol with checksums is implemented between the host and radio for robust access The radios communicate using a subset of the AX 25 packet protocol custom protocols can be ordered The AX 25 packet source and destination call signs are configurable Figure 1 Picture of the Li 1 Radio Astronautical Development LLC Li 1 Radio Applications CubeSat Kit systems High altitude balloon missions Rovers or other remotely opera
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