1. THEMIS/GBO CDR Peer Review 1 Univ. of Calgary, Apr. 26-27, 2004 Ground Magnetometer David Pierce UCLA

2. THEMIS/GBO CDR Peer Review 2 Univ. of Calgary, Apr. 26-27, 2004 CDR Topic Overview GMAG Subsystem Requirements & Specifications Block Diagram Electrical Diagram / Layout Mechanical / Mass / Power GPS Timing Software Instrument Integration and Test Schedule Issues

3. THEMIS/GBO CDR Peer Review 3 Univ. of Calgary, Apr. 26-27, 2004 Requirements & Specifications

4. THEMIS/GBO CDR Peer Review 4 Univ. of Calgary, Apr. 26-27, 2004 Requirements & Specifications System Features GPS Receiver  Antenna and Electronics Integrated into one package  May be located >30M from host (RS422 signals)  NTP compatible (1msec time accuracy) Flxugate Magnetometer  ±72KnT dynamic range @ 0.01nT Resolution (~23 bits)  Offset DAC system for 256 possible ranges per axis  2 Vectors per second data rate  Low Power < 4W  Small Size 22cm x 13cm x 5cm  Ruggedized All Weather Sensor Design  USB interface for data retrieval and firmware upload

5. THEMIS/GBO CDR Peer Review 5 Univ. of Calgary, Apr. 26-27, 2004 Block Diagram UCLA GBO MAGNETOMETER SYSTEM OVERVIEW PIC18F452 Micro-Controller GPS Serial Interface DB15F USB USB Interface DB9F PPS Timing Interface GPS Heater & Power Interface TCXO XC2S50 FPGA FPGA FLASH Power Regulation +/-15V +5V Power Regulation +/-15V +5V DIN-5F Axis 1 Axis 2 Axis 3 DB25F Drive Sensor Heater

6. THEMIS/GBO CDR Peer Review 6 Univ. of Calgary, Apr. 26-27, 2004 Electrical Interfaces GMAG Interfaces GPS ACUTIME2000 AntennaDB-15F GPS SerialNTP InterfaceDB-9F USBData InterfaceUSB-B SensorFluxgate MagnetometerDB-25F PowerDC Voltage InputDIN-5F

7. THEMIS/GBO CDR Peer Review 7 Univ. of Calgary, Apr. 26-27, 2004 Electrical Interfaces Micro Controller FPGA RS-422 / TTL Interface RS-422 / TTL Interface GPS Connector (DB-15F) GPS Connector (DB-15F) Event PORTA PORTB PPS COM2 (DB-9F) COM2 (DB-9F) RS-232 / TTL Interface RS-232 / TTL Interface RXD RTS USB (Type B) USB (Type B) Data & Time Packets GPS ACUTIME 2000 / NTP Interface Detail GPS Time & Status Precise Time Sync GPS Configuration

8. THEMIS/GBO CDR Peer Review 8 Univ. of Calgary, Apr. 26-27, 2004 Mechanical and Thermal UCLA GBO Magnetometer Chassis DB15F – GPS Receiver DB9F – GBO Data System USB Type B – GBO Data System 21.6cm DB25F – Fluxgate Sensor DIN 5F – +12V Power Input 5.1cm 13.4cm All components rated to operate at -40  C - +85  C

9. THEMIS/GBO CDR Peer Review 9 Univ. of Calgary, Apr. 26-27, 2004 Mechanical and Thermal GMAG PCB & Chassis

10. THEMIS/GBO CDR Peer Review 10 Univ. of Calgary, Apr. 26-27, 2004 Mechanical and Thermal UCLA GBO Magnetometer Sensor DB25M ~100cm 12.7cm 50Meters (Max)

11. THEMIS/GBO CDR Peer Review 11 Univ. of Calgary, Apr. 26-27, 2004 Mechanical and Thermal Ground Magnetometer Fluxgate Sensor

12. THEMIS/GBO CDR Peer Review 12 Univ. of Calgary, Apr. 26-27, 2004 Mechanical and Thermal Ground Magnetometer Fluxgate Sensor Components

13. THEMIS/GBO CDR Peer Review 13 Univ. of Calgary, Apr. 26-27, 2004 Mechanical and Thermal Installed Fluxgate Sensor at LANL

14. THEMIS/GBO CDR Peer Review 14 Univ. of Calgary, Apr. 26-27, 2004 Mass & Power Sensor Mass:15 Kg Chassis Mass:1.2 Kg Input Voltage:(9 – 18)VDC Input Current:GPS system100ma. Magnetometer250ma. Sensor Heater600ma. (max) Electronics Heater200ma. (max)

15. THEMIS/GBO CDR Peer Review 15 Univ. of Calgary, Apr. 26-27, 2004 Parts All parts are industrial grade or better All parts rated to operate at -40  C - +85  C

16. THEMIS/GBO CDR Peer Review 16 Univ. of Calgary, Apr. 26-27, 2004 GPS Timing GMAG Data Timing Sampling determined by TCXO (<10ppm aging) Time Tagging determined by GPS (  5msec) GPS Time Quality Factor Logged Time Recalculated Periodically Typ. Hourly Re-Synchronization at Programmable Rate Optional

17. THEMIS/GBO CDR Peer Review 17 Univ. of Calgary, Apr. 26-27, 2004 GMAG Software Program Components GBO Site Installation Software Linux LabView 7.0 Delivery 5/24/2004 GBO Autonomous Software GNU C (POSIX) Delivery5/31/2004 EPO Software Windows LabView 7.0

18. THEMIS/GBO CDR Peer Review 18 Univ. of Calgary, Apr. 26-27, 2004 GMAG Software

19. THEMIS/GBO CDR Peer Review 19 Univ. of Calgary, Apr. 26-27, 2004 GMAG Software

20. THEMIS/GBO CDR Peer Review 20 Univ. of Calgary, Apr. 26-27, 2004 GMAG Software

21. THEMIS/GBO CDR Peer Review 21 Univ. of Calgary, Apr. 26-27, 2004 GMAG Software GMAG Data Products Data Inputs Include:  Configuration File (UCLA_GBO_SSSS_Vxx_xx.INI)  uP Firmware File (UCLA_GBO_SSSS_Vxx_xx.UPF)  FPGA Firmware File (UCLA_GBO_SSSS_Vxx_xx.GAF) Data Outputs Include:  Mag Vector Data (SSSSdddddd_MAG_hh_cc.RMD)  Mag Housekeeping Data (SSSSdddddd_MAG_hh_cc.HKD)  Magnetometer Log Data (SSSSdddddd_MAG_hh_cc.LOD)  Mag Calibration Data (UCLA_GBO_SSSS_Vxx_xx.CAL)

22. THEMIS/GBO CDR Peer Review 22 Univ. of Calgary, Apr. 26-27, 2004 Instrument Integration and Test Verification Tests Performed by UCLA 2.6.1 GMAG Sensitivity (UCLA CF) 2.6.2 GMAG 3-axis Sensing (SGDSD) 2.6.3 GMAG Dynamic Range (UCLA CF) 2.6.4 GMAG Time Resolution (UCLA CF) 2.7.4 GPS Time Base (UCLA CF) 2.7.9 Operating Temperature (UCLA CF) CF - Calibration Facility SGDSD - San Gabriel Dam Site Deployment

23. THEMIS/GBO CDR Peer Review 23 Univ. of Calgary, Apr. 26-27, 2004 GMAG Delivery Schedule GBO GMAG Deliveries GMAG #16/18/2004 GMAG #26/21/2004 GMAG #36/28/2004 GMAG #49/24/2004 GMAG #510/07/2004 GMAG #63/14/2005 GMAG #75/02/2005 GMAG #85/09/2005 GMAG #95/16/2005 GMAG #105/23/2005 GBO GPS Only Deliveries GPS #17/02/2004 GPS #212/06/2004 GPS #31/25/2005 GPS #43/16/2005 GPS #55/16/2005 GPS #66/09/2005 GPS #711/01/2005 GPS #811/15/2005 GPS #912/01/2005 GPS #10TBD

24. THEMIS/GBO CDR Peer Review 24 Univ. of Calgary, Apr. 26-27, 2004 GMAG Delivery Schedule EPO GMAG Deliveries EPOMAG #17/12/2004 EPOMAG #28/12/2004 EPOMAG #38/28/2004 EPOMAG #49/12/2004 EPOMAG #510/14/2004 EPOMAG #66/15/2005 EPOMAG #76/30/2005 EPOMAG #87/15/2005 EPOMAG #98/01/2005 EPOMAG #108/15/2005

25. THEMIS/GBO CDR Peer Review 25 Univ. of Calgary, Apr. 26-27, 2004 Issues GPS Operation at extreme low temperatures LINUX application software in development