1. 3 COMPONENTS OF MAGNETIC WAVES UP TO 4 kHz
THE DSP – STAFF/DWP EXPERIMENT
3 COMPONENTS OF MAGNETIC WAVES UP TO 4 kHz
COMMON EXPERIMENT PROPOSED BY THE CETP AND SHEFFIELD
FOR THE EQUATORIAL SATELLITE ONLY
Keith Yearby
Bertrand de la Porte TM
Hugo Alleyne
Nicole Cornilleau-Wehrlin PI
SHEFFIELD
CETP
Bertrand de la Porte – 25/03/2002

2. THE DSP-STAFF/DWP EXPERIMENT
Bertrand de la Porte - March 2002
(IEL connection to be added)
STAFF-ant : Search Coil antenna
STAFF-amp : Pre-Amplifier
STAFF-mwf : Magnetic Waveform
STAFF-DWP : Digital Wave Processor
STAFF-pwr : Power Supply

3. DSP-STAFF/DWP Changes w.r.t. CLUSTER
BANDWIDTH limitation to reduce the Spin Signal
(small RC filters inside the connector)
Improvement of the Rad Protection for the Power Supply (+60g)
New Design of the Main Electronic Unit STAFF –mwf/DWP
Bertrand delaPorte – 25/03/2002

4. DSP – STAFF/DWP – STATUS & DELIVERABLES
Instrument Cluster name DSP name Status
Search Coil Sensor WEC.6 STAFF-ant Cluster EM/Spare, available
No EM, no Spare for DSP
Pré-Amplifier WEC.7 STAFF-amp Cluster Spare, available
Spin Correction needed
No Spare for DSP
Magnetic Waveform WEC.8/1 STAFF-mwf Cluster Spare, available
Wave Processor WEC.9/2 like STAFF-DWP new unit derived from Cluster-DWP
An EM will be built
Power Supply WEC.11 STAFF-pwr Cluster Spare, available
Radiation protection to be improved
Possibly EM, no Spare
Harness to be manufactured
 Integrations with an EM can be performed in Europe but it is not envisaged to send an EM for STAFF- in China
Bertrand delaPorte – 25/03/2002

5. DSP-STAFF/DWP INTERFACE DEFINITION
Cluster WEC-EID_B not well adapted to DSP STAFF/DWP
EID_B + ECR possible for STAFF –ant, -amp, -pwr
NOT for the main electronic box STAFF –mwf/DWP
A STAFF/DWP IDS was compiled mid Feb 2002 by Dong Wei
Largely corrected by Keith Yearby and Bertrand delaPorte
Current issue: 4.0 (?) not complete, but right
Configuration Control needed
Something like an EID_A is urgently requested !!!
Bertrand delaPorte – 25/03/2002

6. DSP-STAFF/DWP COMMUNICATION
Assigned Engineer: DONG Wei no – no direct contact
But: large number of technical exchange with Lanlan Wll
Information obviously exchanged within the Chinese teams
Q/R forwarded to Keith with a copy to Roland
COMMUNICATION EXISTS but
FINAL CONCLUSIONS /AGREEMENTS NOT ALWAYS CLEAR
(lack of Control Managment)
Bertrand delaPorte – 25/03/2002

7. DSP-STAFF/DWP COMMUNICATION liste of Questions /Responses in 2001
Q : STAFF – PEACE Interconnections
Q : Telemetry, parameters
Q : STAFF/DWP characteristics, OBDH i/f, temperature sensors
Q : temperature & mechanical characteristics
Q : thermal, mechanical, telemetry, harness
Q : mechanical, thermal specifications
Q : On board monitoring
Q : mechanical specifications
Q : C.o.G., M.o.I. specifications
Bertrand delaPorte – 25/03/2002

8. liste of Questions /Responses in 2002
Q : STAFF/DWP mechanical specifications
Q : Stack mechanical design, boom harness
Q : Boom harness, relation with Magson
Q : Boom harness, request for LFEW harness
Q : Boom harness, responsibilities
Q : Common STAFF/DWP IDS – Hua Hzhao, Dong Wei
R : STAFF/DWP IDS updates, KHY, BdlP
Q : IEL connector, +-6V to DWP, small corrections
Q : questions about connectors and parameters
R : new revision of the IDS – now issue: 4.0
Q : On board Monitoring
Q : request to manufacture the power cable in Europe
Q : questions about the Power cable again
Q : Control Files for Integrations
Q : Request about the boom cable
Bertrand delaPorte – 25/03/2002

9. DSP – STAFF EXPORT REGULATION STATUS
LETTER SIGNED BY THE PIs
Parts classification completed with a good support from IC and OAW
For USA:
No ITAR,
one component only: A/DC, classified CCL : 3A001.a.2.c
One Time Report prepared for BXA to invoque « de-minimis » rule.
To be joined in the common request coordinated by IC
For EU:
No Arms classification,
Magnetic Sensor classified as « dual-use » in the EU List: 6A006.b
Contacts engaged with the « Service des Douanes »
No serious difficulty expected
Bertrand delaPorte – 25/03/2002

10. DSP-STAFF/DWP Outstanding Issues
BOOM DESIGN
PAYLOAD ACCOMMODATION
HARNESS
EMC (Grounding Plan requested)
THERMAL
FUNDING – requested mainly for missions
Additionnal funding expected from the CNES for harness
AIV/Control Files/TM/TC/HK/Monitoring: presented by DWP
Bertrand delaPorte – 25/03/2002

11. 3 BOOMS CONSTRUCTED BY MAGSON - BERLIN
DSP-STAFF OUTSTANDING ISSUES
BOOM & HARNESS DESIGN
3 BOOMS CONSTRUCTED BY MAGSON - BERLIN
REQUEST FROM THE CHINESE FOR PROCUREMENT
OF 3 SETS OF CABLE BY STAFF
MEASUREMENT AXIS TO BE
COORDINATED WITH FGM
Bertrand delaPorte – 25/03/2002

12. DSP-STAFF OUTSTANDING ISSUES Payload ACCOMMODATION – STILL UNKNOWN
PREFERRED SOLUTION
CURRENT DESIGN
Bertrand delaPorte – 25/03/2002