November 12, 2003 1 Instrument Electronics Henrik von der Lippe Lawrence Berkeley National...
-
Upload
eugene-tate -
Category
Documents
-
view
218 -
download
3
Transcript of November 12, 2003 1 Instrument Electronics Henrik von der Lippe Lawrence Berkeley National...
1November 12, 2003
Instrument Electronics
Henrik von der LippeLawrence Berkeley National Laboratory
November 11th, 2003
2November 12, 2003
• Overview & strategy
• Baseline for SNAP Instrument electronics system
• R&D goals
• Progress last year
• CCD & IR focal plane modules
• Mass memory & Compression
• Observatory Control Unit
• Schedule
• Manpower
• R&D management
• R&D deliverables
• Summary
Outline
3November 12, 2003
Instrument electronics
PROPULSION
CONTROLLER
/ACS
ITHACOTYPEBREACTIONWHEEL
SUNSENSORS
GUIDESTARTRACKER
INFRA REDIMAGER
VISIBLEIMAGER
AND POSITION SENSORSHUTTER MOTOR
AND POSITION SENSORSFILTER WHEEL MOTORS
FOCUS CONTROL MOTORSAND POSITION SENSORS
LiHBATTERY21AH2
TOINSTRUMENTS&S/CSYSTEMS
POWER
CONTROLLERSYSTEM
REGULATED+28V
UNIT
COMMAND&DATA
HANDLING
LOWERLGAA
UPPERLGAA
(PRIME)
GIMBLEHGA2AXIS
50CMDIA
TRANSMITTER
6WATT
KaBANDHGA
TRANSPONDERS-BAND5WATT
(PRIME)
LiHBATTERY21AH2
REGULATED+28VTOINSTRUMENTS&S/CSYSTEMS
CONTROLLER
POWERSYSTEM
44
TRANSMITTER
HGA2AXISGIMBLE
KaBAND
6WATT50CMDIA
HGA
TRANSPONDER
UPPERLGAB
LOWERLGAB
S-BAND
(BACK-UP)
5WATT
ITHACOTYPEBREACTIONWHEEL
ITHACOTYPEBREACTIONWHEEL
ITHACOTYPEBREACTIONWHEEL
GROUPB
SETTHRUSTERPRIME
SET
THRUSTERBACK-UP
PROPELLANTTANK
PROPULSION
CONTROLLER
/ACS
CIRCUITBREAKER
BREAKERCIRCUIT
CIRCUITBREAKER
BREAKERCIRCUIT
5OR6TOTAL
5OR6TOTAL
(BACK-UP)
(PRIME)
HANDLING
COMMAND&DATA
UNIT
THRUSTER
(BACK-UP)
CIRCUIT
CLK/BIAS
CIRCUIT
AlN2
CKT
BD
8
2
2
10
CRIC
ASIC
BOARD
30
6
30CRIC
6
STROBE
STROBE
BI-DIRECTIONAL DATA
BI-DIRECTIONAL DATA
CLOCK2
2
3
GROUND
CLOCK
6
8
2
DC-DC
CONV
3
2
BACK-UPINTERFACE
PRIMEINTERFACE
INTERFACE
INTERFACE
INTERFACE
INTERFACE
3
1
1
1 1
1
1
MATRIX CONTROLDRIVER
3
1
3
1
1
1
1 1
1
1
136
RELAY
1
1
4
1
36
35
3
1
1
1
1
1
1
1 1
36
DRIVERMATRIXRELAY
3
3
1
1
1
1
1
1
1
1
1
36
CONTROL
1
4
35
13 1113 1111 3 11DRIVERMATRIXRELAY 1111 35CONTROL36 361 4CONTROL 4 113 11113 1111 3 11DRIVERMATRIX 1111136 361 35
1
1
RELAY
1
35
36
X36 TOTAL
PRIMEINTERFACE
INTERFACEBACK-UP
BACK-UPINTERFACE
PRIMEINTERFACE
3
3
1
1
1
1
1
1
1
1
1
1
1
INTERFACEPRIME
INTERFACEBACK-UP
RELAY
DRIVERMATRIX
1
1
1
336
CONTROL
1
1
1
4
1
1
1
1
1
1
3
1
1
1
1
1
1
1
DRIVERMATRIXRELAY
3
3
1
1
1
361
1
36
35
1
CONTROL 4
SPECTRO-GRAPH
A
GRAPHSPECTRO-
B
CIRCUIT
CLK/BIAS
AlN2
BD
CKT
BOARD
8 CRIC
ASIC2
10
2
6
30CIRCUIT
CRIC
6
30
CKT
BD
AlN2
STROBEBI-DIRECTIONAL DATA
BI-DIRECTIONAL DATASTROBE
DC-DC
CONV
2
2
CLOCK
CLOCK
8
6 2
INTERFACE
3
3
GROUND
2
MONITORSAND MECHANICAL
PRIME
STROBEBI-DIRECTIONAL DATA
STROBEBI-DIRECTIONAL DATA
CONV
DC-DC2
CHIP
ROCKWELLSIDECAR
CLOCK
CLOCK
3
3
GROUND
PRIMEINTERFACE
2
CONV
DC-DC
BI-DIRECTIONAL DATA
BI-DIRECTIONAL DATA
STROBE
STROBE
BD
CKT
AlN2
CLK/BIAS
CIRCUIT3030
BOARD
ASIC
CRIC8
CIRCUIT
10
2
2
CRIC
6 6
6
2
2
CLOCK
2
CLOCK
8
3
GROUND
3
PRIME
BACK-UP
2
STROBE
STROBE
BI-DIRECTIONAL DATA
BI-DIRECTIONAL DATA
DC-DC
CONV
AlN2
CKT
BD
CIRCUIT
CLK/BIAS
8 CRIC
ASIC2
2
6
CRICCIRCUITBOARD
30
6
10
30
2 CLOCK
2
8
6
CLOCK
2
3
GROUND
BACK-UP
2
3
PRIME
CONVDC-DCBI-DIRECTIONAL DATABI-DIRECTIONAL DATASTROBESTROBEBDCKTAlN2 BOARDASICCRIC8 1022 2 CLOCK2 CLOCKCLK/BIASCIRCUIT30 CIRCUITCRIC6 306 68 2 PRIME3 GROUND3 BACK-UPINTERFACEINTERFACE2STROBESTROBEBI-DIRECTIONAL DATABI-DIRECTIONAL DATADC-DCCONV
CONV
DC-DC
BI-DIRECTIONAL DATABI-DIRECTIONAL DATASTROBESTROBEAlN2CKTBDBDCKTAlN2
CIRCUITCLK/BIAS8 CRICASIC 226 CRICCIRCUITBOARD30 61030 2 CLOCK286 CLOCK2
CLK/BIAS
CIRCUIT3030
BOARDASICCRIC8
CIRCUIT
1022
CRIC
6 6
6
2
2
CLOCK2 CLOCK
8
3 GROUND BACK-UPINTERFACE23 PRIMEINTERFACE3 GROUND3INTERFACEPRIME
INTERFACEBACK-UP
2
BACK-UP
INTERFACE
THERMALCONTROLBOARD
POWERCONTROLBOARD
E.G.32LINESTOTAL
TOHEATER
MODULES
COMMANDS
INTERFACE
FROMDPU
DATA
+28VOLTPOWER
DPUBOARD
MEMORYCONTL/FORMATBD
UNITA
INSTRUMENTMEMORY
CALIBSOURCECONTLBD
MOTORCONTROLBOARD
CONTLBDFROMPWR
INSTRUMENTPOWERSERVICES
FOCALPLANEINTFBD
UNITB
MEMORYINSTRUMENT
CONNECTORS INSTALLEDAS NEEDED TO SEPARATEMECHANICAL ASSEMBLIES
21AUGUST,2003HHEETDERKSHHEETDERKSCOGENG'R:TITLE:DRAWNSHEET1OF1DATE:NO:DWGREV:
FLEXCIRCUIT LINK BETWEEN135 DEG K FOCAL PLANE AND290 DEG K SURROUNDINGSTRUCTURETHERMAL FLEXCIRCUIT LINKS MAY BE COMBINEDTO FORM A SMALLER NUMBER OF ASSEMBLIESAS LONG AS PRIME AND REDUNDANT CIRCUITS ARENOT INCLUDED IN THE SAME ASSEMBLY
ALL CIRCUITS ONFOCAL PLANEOPERATE AT135 DEG K
MEMORYSYSTEMTESTCONNECTOR
MEMORYSYSTEMTESTCONNECTOR
QUAD THERMALCONTROLLER ASIC
DOWNLINK MONITORTEXT CONNECTOR
TEXT CONNECTORDOWNLINK MONITOR
MOTORCONTROLBOARD
CALIBSOURCECONTLBD
MEMORYCONTL/FORMATBD
FOCALPLANEINTFBD
DPUBOARD
MAY NEEDFPGA TO
IMPLEMENTREDUNDANTINTERFACES
BI-DIRECTIONAL DATA
GROUND
BI-DIRECTIONAL DATA
CKT
AlN2
BD
INTERFACES
SIDECARROCKWELL
CHIP
2
MAY NEED
REDUNDANTIMPLEMENTFPGA TO
STROBECLOCK
STROBECLOCK
CONV
DC-DC
3
3
2
BI-DIRECTIONAL DATA
GROUND
BI-DIRECTIONAL DATACKT
AlN2
BD
INTERFACES
SIDECARROCKWELL
CHIP
2
MAY NEED
REDUNDANTIMPLEMENTFPGA TO
STROBECLOCK
STROBECLOCK
CONV
DC-DC
3
3
2
BI-DIRECTIONAL DATA
GROUND
BI-DIRECTIONAL DATA
CKT
AlN2
BD
INTERFACES
SIDECARROCKWELL
CHIP
2
MAY NEED
REDUNDANTIMPLEMENTFPGA TO
STROBECLOCK
STROBECLOCK
CONV
DC-DC
3
3
2
GROUPA
SUNSENSORS
STAR TRACKERBALL CT-602
LITTON3 AXIS HRG
UNIT A
PRIME3 AXIS HRGLITTONBACK-UP
STAR TRACKERBALL CT-602
UNIT B
STAR TRACKERUNIT CBALL CT-602
MECHANISMSMOUNTED ON
OPTICS BENCH
INSTRUMENT
INSTRUMENTMOUNTED ONOPTICS BENCHCOMPONENTSACSSPACECRAFT USEANESIZEPRINTERFORGOODLEGIBILITY,
INTERFACE
FROMDPU
+28VOLT
CONTLBDFROMPWR
DATACOMMANDS
POWERCONTROLBOARD
SERVICESPOWERINSTRUMENT
TOHEATER
MODULES
THERMALCONTROLBOARDTOTAL
E.G.32LINES
POWER
INTERFACE
BACK-UP
BI-DIRECTIONAL DATA
BI-DIRECTIONAL DATA
BI-DIRECTIONAL DATA
BI-DIRECTIONAL DATABD
ASIC
CRIC8
2
10
2 2
2
CLOCKSTROBE
CKT
AlN2
CRICCIRCUITBOARD
30
6
30
6
BD
AlN2
CKT
CLK/BIAS
CIRCUIT6
8
2
CLOCK
CONV
DC-DC
STROBE
INTERFACES
CHIPSIDECAR
ROCKWELL
2
REDUNDANTIMPLEMENTFPGA TO
CLOCKSTROBE
MAY NEEDCLOCK
DC-DC
CONV
STROBE
BACK-UP
INTERFACE
GROUND
3
INTERFACE
2
3
PRIME
INTERFACE
BACK-UP
INTERFACE
GROUND
3
2
3
PRIME
1
1
RELAYMATRIXDRIVER
1
1
3
1
13
1
1
1
1
3
1
1
1
1
3
CONTROL
41
4
1
4
1
3 1
1
1
1
1
1
113
13
3 1
1
1
1
1
1
1
13
1
1
1
1
1
1
1
3
RELAYMATRIXDRIVER
1
1
1
1
CONTROL
4
4
1
4
MONITORSAND MECHANICAL
INTERFACEPRIME
BACK-UP
INTERFACE
PRIMEINTERFACE
BACK-UP
INTERFACE
15531553444444444444
POR
DUALFIELDCOILS
POR
DUALFIELDCOILS
3
3
3
3
3
3
3
3
3
3
33
56
56
300MHZDOWNLINKPRIME
300MHZDOWNLINKBACK-UP
300MHZDOWNLINKBACK-UP
300MHZDOWNLINKPRIME
+28VOLTPOWERFROMPRIMES/CPWRDISTUNIT
PWRDISTUNITBACK-UPS/CPOWERFROM+28VOLT
HARNESSSHOWNINCYANISSUPPLIEDBYTHESPACECRAFTVENDOR
NOTETHATTHEREISANADDITIONALSETOFPRIMEANDBACK-UPHARNESSESFROM
WHICHISNOTSHOWNTHEPOWERSYSTEM
PWR DIST UNITBACK-UP S/CPOWER FROM+28 VOLT+28 VOLTPRIME S/CPOWER FROMPWR DIST UNIT15531553PWRDISTUNITBACK-UPS/CPOWERFROM+28VOLT
+28VOLTPOWERFROMPRIMES/CPWRDISTUNIT
HYDRAZINELINES
CALIBRATION LIGHT SOURCES (PRIME)
CALIBRATION LIGHT SOURCES (BACK-UP)
HARNESS SHOWN IN MAGENTAIS SUPPLIED BY THEINSTRUMENT FABRICATOR
TELESCOPE FOCAL PLANE ASSEMBLY
THEPRIMEANDBACK-UPOCUEACHHAVEA28VOLTPOWERSERVICEFROMBOTHTHEPRIMEANDTHEBACK-UPPOWERSWITCHINGUNITS.POWERTOALLOTHERINSTRUMENTFUNCTIONSISSUPPLIEDBYTHEOCU.
(PRIME)
(BACK-UP)
OBSERVATORYCONTROLUNIT(PRIME)
SPACECRAFTINSTRUMENT TO
CONNECTOR
INSTRUMENT TOSPACECRAFTCONNECTOR
OBSERVATORYCONTROLUNIT(PRIME)
SPACECRAFTPOWERSUBSYSTEM
SPACECRAFTCOMMANDANDDATASUBSYSTEM
SPACECRAFTATTITUDECONTROLSUBSYSTEM
IMAGER CCD MODULE
GUIDER CCD MODULE
SPECTROGRAPH CCD MODULE
SPECTROGRAPH IR MODULE
3
2
3
2
GUIDER CCD MODULE
GUIDER CCD MODULE
IMAGER IR MODULE
IMAGER CCD MODULE
IMAGER CCD MODULE
IMAGER IR MODULE
IMAGER IR MODULE
SPECTROGRAPH CCD MODULE
2
3
2
3
SPECTROGRAPH IR MODULE
CLOCK DRIVER MODULE
CLOCK DRIVER MODULE
CLOCK DRIVER MODULE
CLOCK DRIVER MODULE
CLOCK DRIVER MODULECLOCK DRIVER MODULE
CLOCK DRIVER MODULE
CONTROLLED BY TWO4 REDUNDANT HEATERS
CIRCUIT MODULES
HEATER ELEMENT.REDUNDANT MINCO
CLOCK DRIVER MODULE
BETWEEN INSTRUMENT
MECHANICALINTERFACE
AND SPACECRAFTANDSPACECRAFTBETWEENINSTRUMENT
ELECTRICALINTERFACE
INTERFACE BOARDPRIME OCU
INTERFACE BOARDBACK-UP OCU
3
2
3
2
2
3
3
2
3
2
2
3
2
3
2
3
3
2
3
2
3
2
2
3
32323223323
2
THIS HARNESS IS FIXEDON FOCAL PLANE
SPACESCIENCESLABORATORYLAWRENCEBERKELEYNATIONALLABORATORY
FIRSTVERSIONRELEASEDINTOCM.SHOWSCCDMODULEWITHINTEGRATEDCLOCKDRIVERS;FOCALPLANEREDUNDANCYSWITCHING;DESCRIPTION
CREV C.M.
2003AUG28
DATEM.A.ENGRCHK
HDHHDH
BYREVSYS
HASCOMPLETEFOCALPLANEHARNESSANDTHERMALLINKS;SHOWSMOREDETAILONOCUREQUIREMENTSANDFUNCTION.HDHHDHD MODIRDETELECTRONICSPERH.VONDERLIPPECOMMENTS;DOWNLINKDATAFROMOCU;SHOWACSCOMPONENTSONOPTICBENCHHDHHDH2003OCT10
OCUINTERFACESDIRECTLYTOSPECTROGRAPHDETECTORMODULES.THISSIMPLIFIESSPECTROGRAPHELECTRONICS.E HDHHDH2003OCT17
OCU & Mem
Spectrograph
Imager
Star Guider
Thermal Ctrl
5November 12, 2003
Strategy for Instrument Electronics
• Employ existing, tested solutions with space flight heritage wherever possible
• Avoid single-point failures and maintain redundancy where possible within power, weight, cost budgets
• Keep number of components and interconnections to a minimum for reliability
• Reduce number and length of cables carrying low-level analog signals to avoid noise pickup, crosstalk
• Use a common architecture for readout of different sensors to extent possible, to reduce number of different electronics systems
• Have a fallback option for areas of technical or schedule risk
6November 12, 2003
Baseline SNAP Electrical System
• System is has no single point failures— Fully redundant and cross strapped on spacecraft side
— Redundant Observatory Control Units and Large Memories on instrument side
— Instrument Detectors and Mechanisms modularized for failure tolerance
• Uses Industry Standard (e.g. 1553) interface between instrument and spacecraft
• Wide band downlink controlled directly by instrument• Memory Capability incorporated into the Instrument
— No need for Solid State Recorder in spacecraft
• Spacecraft consists of 3 independent modules connected by a 1553 bus
— Power system
— ACS System
— C&DH System
7November 12, 2003
R&D Goals
1. Risk mitigation through early R&D
2. System requirements & interface control documents
3. Conceptual design of electronics/DAQ system/Instrument control
4. Realistic cost & schedule estimate for CDR
• There are only a few key areas where hands-on R&D is required for risk mitigation, mostly in front-end readout and control
• The remainder of the electronics R&D program consists primarily of requirements & interface documentation, conceptual design studies, and cost and schedule estimates for the CDR.
8November 12, 2003
Electronics Working Concept
• Front-end electronics (control and readout) mounted on back of cold plate
+ Reduces cable plant, simplifies grounding & shielding issues, mass+ Minimize cross-talk, pickup for small analog signals+ Reduces power consumption due to increase in e- mobility+ Avoid problems associated with driver on CCD - power, noise+ Compatible with HgCdTe readout being developed by Rockwell for
NASA - must be <10 cm from sensor & operate cold– Thermal constraints - must keep cold plate cold
– Implications for total power and mass of cold plate
• Back-end electronics located in shielded room temperature boxes mounted on space craft
+ Lower radiation exposure+ Simpler temperature requirement+ No thermal impact on focal plane
9November 12, 2003
Progress last year
• Successful Front-end test IC (CRIC)Design specs:
— Photometry: CCD + electronic noise 4.0e- rms— Spectrograph: CCD + electronic noise 2.0e- rms— Large dynamic range: 96dB from noise floor to
130k e- well depth (16-bit)— Readout frequency: 100 kHz & 50kHz— Radiation tolerance: 10 kRad ionization (well
shielded)— Power: 200mJ/image/channel => 10mW/channel
(6.5mW for the analog front-end, 3.5mW for the ADC)
— Operation at 140K and 300K
• Combined CRIC-CCD test in progress (one year ahead of schedule)
• Radiation tolerance testing in progress
• Overall block diagram for the instrument has been developed
10November 12, 2003
CCD module
PROPULSION
CONTROLLER
/ACS
ITHACOTYPEBREACTIONWHEEL
SUNSENSORS
GUIDESTARTRACKER
INFRA REDIMAGER
VISIBLEIMAGER
AND POSITION SENSORSHUTTER MOTOR
AND POSITION SENSORSFILTER WHEEL MOTORS
FOCUS CONTROL MOTORSAND POSITION SENSORS
LiHBATTERY21AH2
TOINSTRUMENTS&S/CSYSTEMS
POWER
CONTROLLERSYSTEM
REGULATED+28V
UNIT
COMMAND&DATA
HANDLING
LOWERLGAA
UPPERLGAA
(PRIME)
GIMBLEHGA2AXIS
50CMDIA
TRANSMITTER
6WATT
KaBANDHGA
TRANSPONDERS-BAND5WATT
(PRIME)
LiHBATTERY21AH2
REGULATED+28VTOINSTRUMENTS&S/CSYSTEMS
CONTROLLER
POWERSYSTEM
44
TRANSMITTER
HGA2AXISGIMBLE
KaBAND
6WATT50CMDIA
HGA
TRANSPONDER
UPPERLGAB
LOWERLGAB
S-BAND
(BACK-UP)
5WATT
ITHACOTYPEBREACTIONWHEEL
ITHACOTYPEBREACTIONWHEEL
ITHACOTYPEBREACTIONWHEEL
GROUPB
SET
THRUSTERPRIME
SET
THRUSTERBACK-UP
PROPELLANTTANK
PROPULSION
CONTROLLER
/ACS
CIRCUITBREAKER
BREAKERCIRCUIT
CIRCUITBREAKER
BREAKERCIRCUIT
5OR6TOTAL
5OR6TOTAL
(BACK-UP)
(PRIME)
HANDLING
COMMAND&DATA
UNIT
THRUSTER
(BACK-UP)
CIRCUIT
CLK/BIAS
CIRCUIT
AlN2
CKT
BD
8
2
2
10
CRIC
ASIC
BOARD
30
6
30CRIC
6
STROBE
STROBE
BI-DIRECTIONAL DATA
BI-DIRECTIONAL DATA
CLOCK2
2
3
GROUND
CLOCK
6
8
2
DC-DC
CONV
3
2
BACK-UPINTERFACE
PRIMEINTERFACE
INTERFACE
INTERFACE
INTERFACE
INTERFACE
3
1
1
1 1
1
1
MATRIX CONTROLDRIVER
3
1
3
1
1
1
1 1
1
1
136
RELAY
1
1
4
1
36
35
3
1
1
1
1
1
1
1 1
36
DRIVERMATRIXRELAY
3
3
1
1
1
1
1
1
1
1
1
36
CONTROL
1
4
35
13 1113 1111 3 11DRIVERMATRIXRELAY 1111 35CONTROL36 361 4CONTROL 4 113 11113 1111 3 11DRIVERMATRIX 1111136 361 35
1
1
RELAY
1
35
36
X36 TOTAL
PRIMEINTERFACE
INTERFACEBACK-UP
BACK-UPINTERFACE
PRIMEINTERFACE
3
3
1
1
1
1
1
1
1
1
1
1
1
INTERFACEPRIME
INTERFACEBACK-UP
RELAY
DRIVERMATRIX
1
1
1
336
CONTROL
1
1
1
4
1
1
1
1
1
1
3
1
1
1
1
1
1
1
DRIVERMATRIXRELAY
3
3
1
1
1
361
1
36
35
1
CONTROL 4
SPECTRO-GRAPH
A
GRAPHSPECTRO-
B
CIRCUIT
CLK/BIAS
AlN2
BD
CKT
BOARD
8 CRIC
ASIC2
10
2
6
30CIRCUIT
CRIC
6
30
CKT
BD
AlN2
STROBEBI-DIRECTIONAL DATA
BI-DIRECTIONAL DATASTROBE
DC-DC
CONV
2
2
CLOCK
CLOCK
8
6 2
INTERFACE
3
3
GROUND
2
MONITORSAND MECHANICAL
PRIME
STROBEBI-DIRECTIONAL DATA
STROBEBI-DIRECTIONAL DATA
CONV
DC-DC2
CHIP
ROCKWELLSIDECAR
CLOCK
CLOCK
3
3
GROUND
PRIMEINTERFACE
2
CONV
DC-DC
BI-DIRECTIONAL DATA
BI-DIRECTIONAL DATA
STROBE
STROBE
BD
CKT
AlN2
CLK/BIAS
CIRCUIT3030
BOARD
ASIC
CRIC8
CIRCUIT
10
2
2
CRIC
6 6
6
2
2
CLOCK
2
CLOCK
8
3
GROUND
3
PRIME
BACK-UP
2
STROBE
STROBE
BI-DIRECTIONAL DATA
BI-DIRECTIONAL DATA
DC-DC
CONV
AlN2
CKT
BD
CIRCUIT
CLK/BIAS
8 CRIC
ASIC2
2
6
CRICCIRCUITBOARD
30
6
10
30
2 CLOCK
2
8
6
CLOCK
2
3
GROUND
BACK-UP
2
3
PRIME
CONVDC-DCBI-DIRECTIONAL DATABI-DIRECTIONAL DATASTROBESTROBEBDCKTAlN2 BOARDASICCRIC8 1022 2 CLOCK2 CLOCKCLK/BIASCIRCUIT30 CIRCUITCRIC6 306 68 2 PRIME3 GROUND3 BACK-UPINTERFACEINTERFACE2STROBESTROBEBI-DIRECTIONAL DATABI-DIRECTIONAL DATADC-DCCONV
CONV
DC-DC
BI-DIRECTIONAL DATABI-DIRECTIONAL DATASTROBESTROBEAlN2CKTBDBDCKTAlN2
CIRCUITCLK/BIAS8 CRICASIC 226 CRICCIRCUITBOARD30 61030 2 CLOCK286 CLOCK2
CLK/BIAS
CIRCUIT3030
BOARDASICCRIC8
CIRCUIT
1022
CRIC
6 6
6
2
2
CLOCK2 CLOCK
8
3 GROUND BACK-UPINTERFACE23 PRIMEINTERFACE3 GROUND3INTERFACEPRIME
INTERFACEBACK-UP
2
BACK-UP
INTERFACE
THERMALCONTROLBOARD
POWERCONTROLBOARD
E.G.32LINESTOTAL
TOHEATER
MODULES
COMMANDS
INTERFACE
FROMDPU
DATA
+28VOLTPOWER
DPUBOARD
MEMORYCONTL/FORMATBD
UNITA
INSTRUMENTMEMORY
CALIBSOURCECONTLBD
MOTORCONTROLBOARD
CONTLBDFROMPWR
INSTRUMENTPOWERSERVICES
FOCALPLANEINTFBD
UNITB
MEMORYINSTRUMENT
CONNECTORS INSTALLEDAS NEEDED TO SEPARATEMECHANICAL ASSEMBLIES
21AUGUST,2003HHEETDERKSHHEETDERKSCOGENG'R:TITLE:DRAWNSHEET1OF1DATE:NO:DWGREV:
FLEXCIRCUIT LINK BETWEEN135 DEG K FOCAL PLANE AND290 DEG K SURROUNDINGSTRUCTURETHERMAL FLEXCIRCUIT LINKS MAY BE COMBINEDTO FORM A SMALLER NUMBER OF ASSEMBLIESAS LONG AS PRIME AND REDUNDANT CIRCUITS ARENOT INCLUDED IN THE SAME ASSEMBLY
ALL CIRCUITS ONFOCAL PLANEOPERATE AT135 DEG K
MEMORYSYSTEMTESTCONNECTOR
MEMORYSYSTEMTESTCONNECTOR
QUAD THERMALCONTROLLER ASIC
DOWNLINK MONITORTEXT CONNECTOR
TEXT CONNECTORDOWNLINK MONITOR
MOTORCONTROLBOARD
CALIBSOURCECONTLBD
MEMORYCONTL/FORMATBD
FOCALPLANEINTFBD
DPUBOARD
MAY NEEDFPGA TO
IMPLEMENTREDUNDANTINTERFACES
BI-DIRECTIONAL DATA
GROUND
BI-DIRECTIONAL DATA
CKT
AlN2
BD
INTERFACES
SIDECARROCKWELL
CHIP
2
MAY NEED
REDUNDANTIMPLEMENTFPGA TO
STROBECLOCK
STROBECLOCK
CONV
DC-DC
3
3
2
BI-DIRECTIONAL DATA
GROUND
BI-DIRECTIONAL DATACKT
AlN2
BD
INTERFACES
SIDECARROCKWELL
CHIP
2
MAY NEED
REDUNDANTIMPLEMENTFPGA TO
STROBECLOCK
STROBECLOCK
CONV
DC-DC
3
3
2
BI-DIRECTIONAL DATA
GROUND
BI-DIRECTIONAL DATA
CKT
AlN2
BD
INTERFACES
SIDECARROCKWELL
CHIP
2
MAY NEED
REDUNDANTIMPLEMENTFPGA TO
STROBECLOCK
STROBECLOCK
CONV
DC-DC
3
3
2
GROUPA
SUNSENSORS
STAR TRACKERBALL CT-602
LITTON3 AXIS HRG
UNIT A
PRIME3 AXIS HRGLITTONBACK-UP
STAR TRACKERBALL CT-602
UNIT B
STAR TRACKERUNIT CBALL CT-602
MECHANISMSMOUNTED ON
OPTICS BENCH
INSTRUMENT
INSTRUMENTMOUNTED ONOPTICS BENCHCOMPONENTSACSSPACECRAFT USEANESIZEPRINTERFORGOODLEGIBILITY,
INTERFACE
FROMDPU
+28VOLT
CONTLBDFROMPWR
DATACOMMANDS
POWERCONTROLBOARD
SERVICESPOWERINSTRUMENT
TOHEATER
MODULES
THERMALCONTROLBOARDTOTAL
E.G.32LINES
POWER
INTERFACE
BACK-UP
BI-DIRECTIONAL DATA
BI-DIRECTIONAL DATA
BI-DIRECTIONAL DATA
BI-DIRECTIONAL DATABD
ASIC
CRIC8
2
10
2 2
2
CLOCKSTROBE
CKT
AlN2
CRICCIRCUITBOARD
30
6
30
6
BD
AlN2
CKT
CLK/BIAS
CIRCUIT6
8
2
CLOCK
CONV
DC-DC
STROBE
INTERFACES
CHIPSIDECAR
ROCKWELL
2
REDUNDANTIMPLEMENTFPGA TO
CLOCKSTROBE
MAY NEEDCLOCK
DC-DC
CONV
STROBE
BACK-UP
INTERFACE
GROUND
3
INTERFACE
2
3
PRIME
INTERFACE
BACK-UP
INTERFACE
GROUND
3
2
3
PRIME
1
1
RELAYMATRIXDRIVER
1
1
3
1
13
1
1
1
1
3
1
1
1
1
3
CONTROL
41
4
1
4
1
3 1
1
1
1
1
1
113
13
3 1
1
1
1
1
1
1
13
1
1
1
1
1
1
1
3
RELAYMATRIXDRIVER
1
1
1
1
CONTROL
4
4
1
4
MONITORSAND MECHANICAL
INTERFACEPRIME
BACK-UP
INTERFACE
PRIMEINTERFACE
BACK-UP
INTERFACE
15531553444444444444
POR
DUALFIELDCOILS
POR
DUALFIELDCOILS
3
3
3
3
3
3
3
3
3
3
33
56
56
300MHZDOWNLINKPRIME
300MHZDOWNLINKBACK-UP
300MHZDOWNLINKBACK-UP
300MHZDOWNLINKPRIME
+28VOLTPOWERFROMPRIMES/CPWRDISTUNIT
PWRDISTUNITBACK-UPS/CPOWERFROM+28VOLT
HARNESSSHOWNINCYANISSUPPLIEDBYTHESPACECRAFTVENDOR
NOTETHATTHEREISANADDITIONALSETOFPRIMEANDBACK-UPHARNESSESFROM
WHICHISNOTSHOWNTHEPOWERSYSTEM
PWR DIST UNITBACK-UP S/CPOWER FROM+28 VOLT+28 VOLTPRIME S/CPOWER FROMPWR DIST UNIT15531553PWRDISTUNITBACK-UPS/CPOWERFROM+28VOLT
+28VOLTPOWERFROMPRIMES/CPWRDISTUNIT
HYDRAZINELINES
CALIBRATION LIGHT SOURCES (PRIME)
CALIBRATION LIGHT SOURCES (BACK-UP)
HARNESS SHOWN IN MAGENTAIS SUPPLIED BY THEINSTRUMENT FABRICATOR
TELESCOPE FOCAL PLANE ASSEMBLY
THEPRIMEANDBACK-UPOCUEACHHAVEA28VOLTPOWERSERVICEFROMBOTHTHEPRIMEANDTHEBACK-UPPOWERSWITCHINGUNITS.POWERTOALLOTHERINSTRUMENTFUNCTIONSISSUPPLIEDBYTHEOCU.
(PRIME)
(BACK-UP)
OBSERVATORYCONTROLUNIT(PRIME)
SPACECRAFTINSTRUMENT TO
CONNECTOR
INSTRUMENT TOSPACECRAFTCONNECTOR
OBSERVATORYCONTROLUNIT(PRIME)
SPACECRAFTPOWERSUBSYSTEM
SPACECRAFTCOMMANDANDDATASUBSYSTEM
SPACECRAFTATTITUDECONTROLSUBSYSTEM
IMAGER CCD MODULE
GUIDER CCD MODULE
SPECTROGRAPH CCD MODULE
SPECTROGRAPH IR MODULE
3
2
3
2
GUIDER CCD MODULE
GUIDER CCD MODULE
IMAGER IR MODULE
IMAGER CCD MODULE
IMAGER CCD MODULE
IMAGER IR MODULE
IMAGER IR MODULE
SPECTROGRAPH CCD MODULE
2
3
2
3
SPECTROGRAPH IR MODULE
CLOCK DRIVER MODULE
CLOCK DRIVER MODULE
CLOCK DRIVER MODULE
CLOCK DRIVER MODULE
CLOCK DRIVER MODULECLOCK DRIVER MODULE
CLOCK DRIVER MODULE
CONTROLLED BY TWO4 REDUNDANT HEATERS
CIRCUIT MODULES
HEATER ELEMENT.REDUNDANT MINCO
CLOCK DRIVER MODULE
BETWEEN INSTRUMENT
MECHANICALINTERFACE
AND SPACECRAFTANDSPACECRAFTBETWEENINSTRUMENT
ELECTRICALINTERFACE
INTERFACE BOARDPRIME OCU
INTERFACE BOARDBACK-UP OCU
3
2
3
2
2
3
3
2
3
2
2
3
2
3
2
3
3
2
3
2
3
2
2
3
32323223323
2
THIS HARNESS IS FIXEDON FOCAL PLANE
SPACESCIENCESLABORATORYLAWRENCEBERKELEYNATIONALLABORATORY
FIRSTVERSIONRELEASEDINTOCM.SHOWSCCDMODULEWITHINTEGRATEDCLOCKDRIVERS;FOCALPLANEREDUNDANCYSWITCHING;DESCRIPTION
CREV C.M.
2003AUG28
DATEM.A.ENGRCHK
HDHHDH
BYREVSYS
HASCOMPLETEFOCALPLANEHARNESSANDTHERMALLINKS;SHOWSMOREDETAILONOCUREQUIREMENTSANDFUNCTION.HDHHDHD MODIRDETELECTRONICSPERH.VONDERLIPPECOMMENTS;DOWNLINKDATAFROMOCU;SHOWACSCOMPONENTSONOPTICBENCHHDHHDH2003OCT10
OCUINTERFACESDIRECTLYTOSPECTROGRAPHDETECTORMODULES.THISSIMPLIFIESSPECTROGRAPHELECTRONICS.E HDHHDH2003OCT17
Star Guider
CIRCUIT
CLK/BIAS
CIRCUIT
AlN2
CKT
BD
8
2
2
10
CRIC
ASIC
BOARD
30
6
30CRIC
6
STROBE
STROBE
BI-DIRECTIONAL DATA
BI-DIRECTIONAL DATA
CLOCK2
2
3
GROUND
CLOCK
6
8
2
DC-DC
CONV
3
2
BACK-UPINTERFACE
PRIMEINTERFACE
IMAGER CCD MODULE CLOCK DRIVER MODULE
3
2
3
2
• CRIC ASIC – Dual-ramp correlated Double Sampler with a multislope integrator for each corner of the CCD. 96 dB dynamic range
• ADC – 12-bit, 100 kHz equivalent conversion rate per CCD
• Backup FE under development by Paris-VI
• Sequencer – Clock pattern generator supporting modes of operation: erase, expose, readout, idle.
• Clock drivers – Programmable amplitude and rise/fall times. Voltages ~20V
• Bias and power generation – Provide switched, programmable large voltages for CCD and local power. (60-80V)
• Temperature monitoring – Local and remote. DAQ and instrument control interface – Path to data buffer memory, master timing, and configuration and control.
11November 12, 2003
PROPULSION
CONTROLLER
/ACS
ITHACOTYPEBREACTIONWHEEL
SUNSENSORS
GUIDESTARTRACKER
INFRA REDIMAGER
VISIBLEIMAGER
AND POSITION SENSORSHUTTER MOTOR
AND POSITION SENSORSFILTER WHEEL MOTORS
FOCUS CONTROL MOTORSAND POSITION SENSORS
LiHBATTERY21AH2
TOINSTRUMENTS&S/CSYSTEMS
POWER
CONTROLLERSYSTEM
REGULATED+28V
UNIT
COMMAND&DATA
HANDLING
LOWERLGAA
UPPERLGAA
(PRIME)
GIMBLEHGA2AXIS
50CMDIA
TRANSMITTER
6WATT
KaBANDHGA
TRANSPONDERS-BAND5WATT
(PRIME)
LiHBATTERY21AH2
REGULATED+28VTOINSTRUMENTS&S/CSYSTEMS
CONTROLLER
POWERSYSTEM
44
TRANSMITTER
HGA2AXISGIMBLE
KaBAND
6WATT50CMDIA
HGA
TRANSPONDER
UPPERLGAB
LOWERLGAB
S-BAND
(BACK-UP)
5WATT
ITHACOTYPEBREACTIONWHEEL
ITHACOTYPEBREACTIONWHEEL
ITHACOTYPEBREACTIONWHEEL
GROUPB
SET
THRUSTERPRIME
SET
THRUSTERBACK-UP
PROPELLANTTANK
PROPULSION
CONTROLLER
/ACS
CIRCUITBREAKER
BREAKERCIRCUIT
CIRCUITBREAKER
BREAKERCIRCUIT
5OR6TOTAL
5OR6TOTAL
(BACK-UP)
(PRIME)
HANDLING
COMMAND&DATA
UNIT
THRUSTER
(BACK-UP)
CIRCUIT
CLK/BIAS
CIRCUIT
AlN2
CKT
BD
8
2
2
10
CRIC
ASIC
BOARD
30
6
30CRIC
6
STROBE
STROBE
BI-DIRECTIONAL DATA
BI-DIRECTIONAL DATA
CLOCK2
2
3
GROUND
CLOCK
6
8
2
DC-DC
CONV
3
2
BACK-UPINTERFACE
PRIMEINTERFACE
INTERFACE
INTERFACE
INTERFACE
INTERFACE
3
1
1
1 1
1
1
MATRIX CONTROLDRIVER
3
1
3
1
1
1
1 1
1
1
136
RELAY
1
1
4
1
36
35
3
1
1
1
1
1
1
1 1
36
DRIVERMATRIXRELAY
3
3
1
1
1
1
1
1
1
1
1
36
CONTROL
1
4
35
13 1113 1111 3 11DRIVERMATRIXRELAY 1111 35CONTROL36 361 4CONTROL 4 113 11113 1111 3 11DRIVERMATRIX 1111136 361 35
1
1
RELAY
1
35
36
X36 TOTAL
PRIMEINTERFACE
INTERFACEBACK-UP
BACK-UPINTERFACE
PRIMEINTERFACE
3
3
1
1
1
1
1
1
1
1
1
1
1
INTERFACEPRIME
INTERFACEBACK-UP
RELAY
DRIVERMATRIX
1
1
1
336
CONTROL
1
1
1
4
1
1
1
1
1
1
3
1
1
1
1
1
1
1
DRIVERMATRIXRELAY
3
3
1
1
1
361
1
36
35
1
CONTROL 4
SPECTRO-GRAPH
A
GRAPHSPECTRO-
B
CIRCUIT
CLK/BIAS
AlN2
BD
CKT
BOARD
8 CRIC
ASIC2
10
2
6
30CIRCUIT
CRIC
6
30
CKT
BD
AlN2
STROBEBI-DIRECTIONAL DATA
BI-DIRECTIONAL DATASTROBE
DC-DC
CONV
2
2
CLOCK
CLOCK
8
6 2
INTERFACE
3
3
GROUND
2
MONITORSAND MECHANICAL
PRIME
STROBEBI-DIRECTIONAL DATA
STROBEBI-DIRECTIONAL DATA
CONV
DC-DC2
CHIP
ROCKWELLSIDECAR
CLOCK
CLOCK
3
3
GROUND
PRIMEINTERFACE
2
CONV
DC-DC
BI-DIRECTIONAL DATA
BI-DIRECTIONAL DATA
STROBE
STROBE
BD
CKT
AlN2
CLK/BIAS
CIRCUIT3030
BOARD
ASIC
CRIC8
CIRCUIT
10
2
2
CRIC
6 6
6
2
2
CLOCK
2
CLOCK
8
3
GROUND
3
PRIME
BACK-UP
2
STROBE
STROBE
BI-DIRECTIONAL DATA
BI-DIRECTIONAL DATA
DC-DC
CONV
AlN2
CKT
BD
CIRCUIT
CLK/BIAS
8 CRIC
ASIC2
2
6
CRICCIRCUITBOARD
30
6
10
30
2 CLOCK
2
8
6
CLOCK
2
3
GROUND
BACK-UP
2
3
PRIME
CONVDC-DCBI-DIRECTIONAL DATABI-DIRECTIONAL DATASTROBESTROBEBDCKTAlN2 BOARDASICCRIC8 1022 2 CLOCK2 CLOCKCLK/BIASCIRCUIT30 CIRCUITCRIC6 306 68 2 PRIME3 GROUND3 BACK-UPINTERFACEINTERFACE2STROBESTROBEBI-DIRECTIONAL DATABI-DIRECTIONAL DATADC-DCCONV
CONV
DC-DC
BI-DIRECTIONAL DATABI-DIRECTIONAL DATASTROBESTROBEAlN2CKTBDBDCKTAlN2
CIRCUITCLK/BIAS8 CRICASIC 226 CRICCIRCUITBOARD30 61030 2 CLOCK286 CLOCK2
CLK/BIAS
CIRCUIT3030
BOARDASICCRIC8
CIRCUIT
1022
CRIC
6 6
6
2
2
CLOCK2 CLOCK
8
3 GROUND BACK-UPINTERFACE23 PRIMEINTERFACE3 GROUND3INTERFACEPRIME
INTERFACEBACK-UP
2
BACK-UP
INTERFACE
THERMALCONTROLBOARD
POWERCONTROLBOARD
E.G.32LINESTOTAL
TOHEATER
MODULES
COMMANDS
INTERFACE
FROMDPU
DATA
+28VOLTPOWER
DPUBOARD
MEMORYCONTL/FORMATBD
UNITA
INSTRUMENTMEMORY
CALIBSOURCECONTLBD
MOTORCONTROLBOARD
CONTLBDFROMPWR
INSTRUMENTPOWERSERVICES
FOCALPLANEINTFBD
UNITB
MEMORYINSTRUMENT
CONNECTORS INSTALLEDAS NEEDED TO SEPARATEMECHANICAL ASSEMBLIES
21AUGUST,2003HHEETDERKSHHEETDERKSCOGENG'R:TITLE:DRAWNSHEET1OF1DATE:NO:DWGREV:
FLEXCIRCUIT LINK BETWEEN135 DEG K FOCAL PLANE AND290 DEG K SURROUNDINGSTRUCTURETHERMAL FLEXCIRCUIT LINKS MAY BE COMBINEDTO FORM A SMALLER NUMBER OF ASSEMBLIESAS LONG AS PRIME AND REDUNDANT CIRCUITS ARENOT INCLUDED IN THE SAME ASSEMBLY
ALL CIRCUITS ONFOCAL PLANEOPERATE AT135 DEG K
MEMORYSYSTEMTESTCONNECTOR
MEMORYSYSTEMTESTCONNECTOR
QUAD THERMALCONTROLLER ASIC
DOWNLINK MONITORTEXT CONNECTOR
TEXT CONNECTORDOWNLINK MONITOR
MOTORCONTROLBOARD
CALIBSOURCECONTLBD
MEMORYCONTL/FORMATBD
FOCALPLANEINTFBD
DPUBOARD
MAY NEEDFPGA TO
IMPLEMENTREDUNDANTINTERFACES
BI-DIRECTIONAL DATA
GROUND
BI-DIRECTIONAL DATA
CKT
AlN2
BD
INTERFACES
SIDECARROCKWELL
CHIP
2
MAY NEED
REDUNDANTIMPLEMENTFPGA TO
STROBECLOCK
STROBECLOCK
CONV
DC-DC
3
3
2
BI-DIRECTIONAL DATA
GROUND
BI-DIRECTIONAL DATACKT
AlN2
BD
INTERFACES
SIDECARROCKWELL
CHIP
2
MAY NEED
REDUNDANTIMPLEMENTFPGA TO
STROBECLOCK
STROBECLOCK
CONV
DC-DC
3
3
2
BI-DIRECTIONAL DATA
GROUND
BI-DIRECTIONAL DATA
CKT
AlN2
BD
INTERFACES
SIDECARROCKWELL
CHIP
2
MAY NEED
REDUNDANTIMPLEMENTFPGA TO
STROBECLOCK
STROBECLOCK
CONV
DC-DC
3
3
2
GROUPA
SUNSENSORS
STAR TRACKERBALL CT-602
LITTON3 AXIS HRG
UNIT A
PRIME3 AXIS HRGLITTONBACK-UP
STAR TRACKERBALL CT-602
UNIT B
STAR TRACKERUNIT CBALL CT-602
MECHANISMSMOUNTED ON
OPTICS BENCH
INSTRUMENT
INSTRUMENTMOUNTED ONOPTICS BENCHCOMPONENTSACSSPACECRAFT USEANESIZEPRINTERFORGOODLEGIBILITY,
INTERFACE
FROMDPU
+28VOLT
CONTLBDFROMPWR
DATACOMMANDS
POWERCONTROLBOARD
SERVICESPOWERINSTRUMENT
TOHEATER
MODULES
THERMALCONTROLBOARDTOTAL
E.G.32LINES
POWER
INTERFACE
BACK-UP
BI-DIRECTIONAL DATA
BI-DIRECTIONAL DATA
BI-DIRECTIONAL DATA
BI-DIRECTIONAL DATABD
ASIC
CRIC8
2
10
2 2
2
CLOCKSTROBE
CKT
AlN2
CRICCIRCUITBOARD
30
6
30
6
BD
AlN2
CKT
CLK/BIAS
CIRCUIT6
8
2
CLOCK
CONV
DC-DC
STROBE
INTERFACES
CHIPSIDECAR
ROCKWELL
2
REDUNDANTIMPLEMENTFPGA TO
CLOCKSTROBE
MAY NEEDCLOCK
DC-DC
CONV
STROBE
BACK-UP
INTERFACE
GROUND
3
INTERFACE
2
3
PRIME
INTERFACE
BACK-UP
INTERFACE
GROUND
3
2
3
PRIME
1
1
RELAYMATRIXDRIVER
1
1
3
1
13
1
1
1
1
3
1
1
1
1
3
CONTROL
41
4
1
4
1
3 1
1
1
1
1
1
113
13
3 1
1
1
1
1
1
1
13
1
1
1
1
1
1
1
3
RELAYMATRIXDRIVER
1
1
1
1
CONTROL
4
4
1
4
MONITORSAND MECHANICAL
INTERFACEPRIME
BACK-UP
INTERFACE
PRIMEINTERFACE
BACK-UP
INTERFACE
15531553444444444444
POR
DUALFIELDCOILS
POR
DUALFIELDCOILS
3
3
3
3
3
3
3
3
3
3
33
56
56
300MHZDOWNLINKPRIME
300MHZDOWNLINKBACK-UP
300MHZDOWNLINKBACK-UP
300MHZDOWNLINKPRIME
+28VOLTPOWERFROMPRIMES/CPWRDISTUNIT
PWRDISTUNITBACK-UPS/CPOWERFROM+28VOLT
HARNESSSHOWNINCYANISSUPPLIEDBYTHESPACECRAFTVENDOR
NOTETHATTHEREISANADDITIONALSETOFPRIMEANDBACK-UPHARNESSESFROM
WHICHISNOTSHOWNTHEPOWERSYSTEM
PWR DIST UNITBACK-UP S/CPOWER FROM+28 VOLT+28 VOLTPRIME S/CPOWER FROMPWR DIST UNIT15531553PWRDISTUNITBACK-UPS/CPOWERFROM+28VOLT
+28VOLTPOWERFROMPRIMES/CPWRDISTUNIT
HYDRAZINELINES
CALIBRATION LIGHT SOURCES (PRIME)
CALIBRATION LIGHT SOURCES (BACK-UP)
HARNESS SHOWN IN MAGENTAIS SUPPLIED BY THEINSTRUMENT FABRICATOR
TELESCOPE FOCAL PLANE ASSEMBLY
THEPRIMEANDBACK-UPOCUEACHHAVEA28VOLTPOWERSERVICEFROMBOTHTHEPRIMEANDTHEBACK-UPPOWERSWITCHINGUNITS.POWERTOALLOTHERINSTRUMENTFUNCTIONSISSUPPLIEDBYTHEOCU.
(PRIME)
(BACK-UP)
OBSERVATORYCONTROLUNIT(PRIME)
SPACECRAFTINSTRUMENT TO
CONNECTOR
INSTRUMENT TOSPACECRAFTCONNECTOR
OBSERVATORYCONTROLUNIT(PRIME)
SPACECRAFTPOWERSUBSYSTEM
SPACECRAFTCOMMANDANDDATASUBSYSTEM
SPACECRAFTATTITUDECONTROLSUBSYSTEM
IMAGER CCD MODULE
GUIDER CCD MODULE
SPECTROGRAPH CCD MODULE
SPECTROGRAPH IR MODULE
3
2
3
2
GUIDER CCD MODULE
GUIDER CCD MODULE
IMAGER IR MODULE
IMAGER CCD MODULE
IMAGER CCD MODULE
IMAGER IR MODULE
IMAGER IR MODULE
SPECTROGRAPH CCD MODULE
2
3
2
3
SPECTROGRAPH IR MODULE
CLOCK DRIVER MODULE
CLOCK DRIVER MODULE
CLOCK DRIVER MODULE
CLOCK DRIVER MODULE
CLOCK DRIVER MODULECLOCK DRIVER MODULE
CLOCK DRIVER MODULE
CONTROLLED BY TWO4 REDUNDANT HEATERS
CIRCUIT MODULES
HEATER ELEMENT.REDUNDANT MINCO
CLOCK DRIVER MODULE
BETWEEN INSTRUMENT
MECHANICALINTERFACE
AND SPACECRAFTANDSPACECRAFTBETWEENINSTRUMENT
ELECTRICALINTERFACE
INTERFACE BOARDPRIME OCU
INTERFACE BOARDBACK-UP OCU
3
2
3
2
2
3
3
2
3
2
2
3
2
3
2
3
3
2
3
2
3
2
2
3
32323223323
2
THIS HARNESS IS FIXEDON FOCAL PLANE
SPACESCIENCESLABORATORYLAWRENCEBERKELEYNATIONALLABORATORY
FIRSTVERSIONRELEASEDINTOCM.SHOWSCCDMODULEWITHINTEGRATEDCLOCKDRIVERS;FOCALPLANEREDUNDANCYSWITCHING;DESCRIPTION
CREV C.M.
2003AUG28
DATEM.A.ENGRCHK
HDHHDH
BYREVSYS
HASCOMPLETEFOCALPLANEHARNESSANDTHERMALLINKS;SHOWSMOREDETAILONOCUREQUIREMENTSANDFUNCTION.HDHHDHD MODIRDETELECTRONICSPERH.VONDERLIPPECOMMENTS;DOWNLINKDATAFROMOCU;SHOWACSCOMPONENTSONOPTICBENCHHDHHDH2003OCT10
OCUINTERFACESDIRECTLYTOSPECTROGRAPHDETECTORMODULES.THISSIMPLIFIESSPECTROGRAPHELECTRONICS.E HDHHDH2003OCT17
IR module
• Bias and power generation – Provide bias voltages for detector & multiplexer
• Temperature monitoring • DAQ and instrument control interface –
Path to data buffer memory, master timing, and configuration and control.
INTERFACEPRIME
INTERFACEBACK-UP
BI-DIRECTIONAL DATA
GROUND
BI-DIRECTIONAL DATACKT
AlN2
BD
INTERFACES
SIDECARROCKWELL
CHIP
2
MAY NEED
REDUNDANTIMPLEMENTFPGA TO
STROBECLOCK
STROBECLOCK
CONV
DC-DC
3
3
2
IMAGER IR MODULE
2
3
2
3
• The Rockwell SIDECAR ASIC provides:
— Programmable gain pre-amplification— 16 bit, 100kHz Analog to digital
conversion• Sequencer – Clock pattern generator
supporting modes of operation: erase, expose, readout, idle.
• Control signals for reading out the mux• Multi-read averaging for noise
reduction
12November 12, 2003
THERMAL CONTROL BOARD
POWER CONTROL BOARD
E.G. 32LINESTOTAL
TO HEATER
MODULES
COMMANDS
INTERFACE
FROM DPU
DATA
+28 VOLTPOWER
DPU BOARD
MEMORY CONTL/FORMAT BD
UNIT A
INSTRUMENTMEMORY
CALIB SOURCE CONTL BD
MOTOR CONTROL BOARD
CONTL BDFROM PWR
INSTRUMENTPOWER
SERVICES
FOCAL PLANE INTF BD
MEMORY SYSTEMTEST CONNECTOR
DOWNLINK MONITORTEXT CONNECTOR
+28 VOLTPOWER FROM
PRIME S/CPWR DIST UNIT
PWR DIST UNITBACK-UP S/C
POWER FROM+28 VOLT
(PRIME)
OBSERVATORY CONTROL UNIT (PRIME)
SPACECRAFTINSTRUMENT TO
CONNECTOR
Observatory Control Unit (OCU)
• Includes all interfaces to the detectors and instrument for both science and housekeeping data
— A given unit connects to either the prime or the redundant interface on focal plane modules
• Has redundant cross strapped interface to Spacecraft Electronics
• Comprised of seven major subassemblies— DPU
• Interfaces to SC C&DH via a single 1553 port on the DPU• Provides command and engineering data interface
— Memory Control / Formatter• Manages Instrument data storage memory• Provides 300 Mhz science data output which directly
drives the Ka band transmitter— Data Compression
• Lossless compression of all science data
— I/O and Control• Collect focal plane science data• Operates motors and mechanisms• Collects instrument housekeeping• Performs power distribution to focal plane electronics• Centroid calculation of guider star for the ACS
— Calibration control• Controls all calibration lamps
— Thermal control• Sets up control for ~1k heater elements
— Power Control
13November 12, 2003
Mass memory
• Two memory technology types are being studied— Flash
— DRAM
• Tests:1. Error rate
2. Access speed
3. Durability (# write cycles)
4. Radiation tolerance
• Total dose
• SEU
• SEL
14November 12, 2003
Data Compression
• Algorithms— CCSDS 120.0 Baseline (Rice)
— Sqrt(N) + CCSDS 120.0
— The algorithms are being test with data from SLOAN and GOODS
• Evaluation of FPGA for algorithm implementation— Survey of alternative FPGA’s
— Performance
— Radiation Tests on Candidate FPGA Technologies
• Evaluation of ASIC’s— Survey of existing IC’s
— Applicability of existing IC to SNAP
15November 12, 2003
R&D Schedule Milestones
SNAP R&D SCHEDULEMajor Milestones O N D J F M A M J J A S O N D J F M A M J J A S O N D J F M A M J J A S
Major Project Reviews ▲ZDR ▲CDRMission Definition and Requirements ▲Draft ▲MCR▲DRR ▲SysRR
INSTRUMENT: Electronics Summary
Essential Model Complete 19-Aug-03Mass Memory Requirement end 15-Oct-03 #
Requirements Analysis end 24-Sep-04 1
Block Diagram Complete 1-Oct-04 1
SIDECAR Characterization done 12-Jan-05 1
CCD Clock & Power Supply Concept complete 17-Feb-05 1
HgCdTe Clock & Power Supply Concept complete 17-Feb-05 1
Compression Requirements end 19-Aug-05 1
CCD Front End Readout end 11-Nov-05 1
Requirements Generation end 18-Jan-06 1
FY 2004 FY 2005 FY 2006
16November 12, 2003
R&D Schedule Milestones
SNAP R&D SCHEDULEMajor Milestones O N D J F M A M J J A S O N D J F M A M J J A S O N D J F M A M J J A S
Major Project Reviews ▲ZDR ▲CDRMission Definition and Requirements ▲Draft ▲MCR▲DRR ▲SysRR
INSTRUMENT: IR Controller (SIDECAR)
MUX Performance Benchmarked 16-Nov-03 #
SIDECAR Delivery 1-Jun-04 #
Start SIDECAR evaluation 2-Jun-04 #
Interface to SIDECAR complete 22-Jul-04 1
Test dewar setup complete 16-Sep-04 1
SIDECAR Temperature performance complete 4-Oct-04 1
SIDECAR Room Temperature functionality test 11-Nov-04 1
SIDECAR Noise Evaluation complete 23-Nov-04 1
Video Generator test complete 27-Dec-04 1
SIDECAR-H2RG test complete 1-Jan-05 1
SIDECAR-VIRGO test complete 16-Feb-05 1
FY 2004 FY 2005 FY 2006
17November 12, 2003
R&D Schedule Milestones
SNAP R&D SCHEDULEMajor Milestones O N D J F M A M J J A S O N D J F M A M J J A S O N D J F M A M J J A S
Major Project Reviews ▲ZDR ▲CDRMission Definition and Requirements ▲Draft ▲MCR▲DRR ▲SysRR
INSTRUMENT: CCD Readout Technology Evaluation
CRIC - CCD Test Complete 1-Nov-03 #
CRIC Testing Complete 15-Dec-03 #
CRIC2 Design Complete 30-Mar-04 #
CRIC2 Fabrication Complete 30-May-04 #
CRIC2 Test Board Complete 30-Jun-04 #
CRIC2 Testing Complete 15-Dec-04 1
CRIC3 Design Complete 30-Jun-05 1
CRIC3 Fabrication Complete 30-Aug-05 1
CRIC3 Test Board Complete 30-Aug-05 1
CRIC3 Testing Complete 30-Nov-05 1
FY 2004 FY 2005 FY 2006
18November 12, 2003
R&D Schedule Milestones
SNAP R&D SCHEDULEMajor Milestones O N D J F M A M J J A S O N D J F M A M J J A S O N D J F M A M J J A S
Major Project Reviews ▲ZDR ▲CDRMission Definition and Requirements ▲Draft ▲MCR▲DRR ▲SysRR
INSTRUMENT: Mass Memory Technology Evaluation
FLASH Test Board Complete 31-Oct-03 #
Mass Memory Technology Review Complete 1-Nov-03 #
FLASH Radiation Test Report Complete 13-Nov-03 #
DRAM Memory Test Board Complete 28-Feb-04 #
Finalize Mass Memory Spec's for CDR 30-Apr-04 #
DRAM Radiation Test Report Complete 13-May-04 #
Mass Memory Technology Recommendation 30-Jun-04 #
for ZDRMass Memory Technology Recommendation 30-May-05 1
for CDR
FY 2004 FY 2005 FY 2006
19November 12, 2003
R&D Schedule Milestones
SNAP R&D SCHEDULEMajor Milestones O N D J F M A M J J A S O N D J F M A M J J A S O N D J F M A M J J A S
Major Project Reviews ▲ZDR ▲CDRMission Definition and Requirements ▲Draft ▲MCR▲DRR ▲SysRR
INSTRUMENT: Compression Algorithm and Implementation Technology Study
FPGA Radiation Test Complete 15-Dec-03 #
Preliminary Report on Sqrt(N) 8-Jan-04 #
CCSCS Preliminary Test Report 21-Jan-04 #
Preliminary Report on LOCO 16-Apr-04 #
ZDR Technology Recommendation 30-Jun-04 #
CDR Technology Recommendation 30-May-05 1
Preliminary Specifications Complete 28-Feb-04 #
Sqrt(N) Preliminary Report on Shapes 30-Mar-04 #
Summary of Literature Research 30-Jun-04 #
Sqrt(N) Report on Weak Lensing 30-Jul-04 1
ZDR Contribution Complete 15-Dec-04 1
CDR Contribution Complete 30-Aug-05 1
FY 2004 FY 2005 FY 2006
20November 12, 2003
Manpower
LBNL CALTECH PARIS XI
A. KarcherH. von der LippeJ-P. WalderG. Zizka
R. SmithM. BonatiD. Guzman
E. BarlettJ-F. GenatH. LebolloR. Sefri
FNAL (pending)
SLAC (pending)
W. Wester (MM)C. Nelson (MM)G. Cardoso (Comp)G. Cancelo (Comp)
W. AlthouseM. E. HufferNew hire
21November 12, 2003
Electronics R&D Management
• Team lead is H. von der Lippe (LBNL)• Weekly meetings with scientists & engineers to review progress,
discuss requirements, etc.• Bi-weekly video meetings between LBNL and Paris to coordinate
electronic R&D activities. These meeting will be converted to Instrument Electronics meetings
• Regular participation in SNAP science, CCD detector, SNAP system engineering & management meetings
• Instrument manager meetings to coordinate between electronics R&D and CCD, HgCdTe, spectrograph R&D activities
• Planning for internal and external reviews— Preliminary design requirements review
— Pre-submission IC design, simulation & verification review
— Preliminary conceptual design review
22November 12, 2003
R&D Deliverables
Two classes• Paper trade studies and conceptual design studies• Active SNAP advancement of a technology
“Paper” deliverables• Detailed requirements & interface control documents• Overall system architecture & design partitioning• Power, grounding & shielding plan• Study of CCD controller options: FPGA, commercial part, VHDL (Custom IC) • Study of memory components• Study of compression algorithms• Study of thermal control system• Plan for space-qualification of all parts
Hardware deliverables• CCD front-end test chip; irradiation & low-temp testing• Test of Rockwell HgCdTe readout IC (SIDECAR)• Prototype demonstration for front-end readout:
- CDS/ADC + CCD sensor
- HgCdTe readout + sensor
23November 12, 2003
Summary
• SNAP instrument electronics presents challenges for high channel count, low noise, low power, low temperature, large dynamic range, and radiation tolerance
• R&D phase will be used to develop requirements, interfaces and system architecture as basis for a detailed cost and schedule for the Conceptual Design Report
• Development of ASIC-based front-end readout requires a limited and focused plan for hands-on R&D towards proof-of-principle prototypes
• R&D management is in place and already actively guiding development