APPENDIX AVI212 Spezifikationen PDF herunterladen (Seite 75)

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GAIA.ASU.SP.ESM.00007

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11 APPENDIX B

Table 11-1 summarises the data interfaces between the RTS (Models) and the Avionics SCOE (Spacecraft

Interfaces). These data are transferred across the Real Time Network under the control of the RTS (DMA

read/write cycles).

The maximum update rate for the RTS is defined as 1/64 of the CSW Major Frame control cycle (nominally

64Hz). The rates herein specified are updates/Major Frame control cycle.

The contents of this table will be TBC until final selection of Spacecraft Units.

Interface Type Function Qty RTS Model Input/Output

(to RTS)

Update

Rate

Analog (12-Bit) LCL Currents 38 PCDU I 8

Boolean LCL STATE 38 PCDU I 8

MIL-STD-1553B BUS I/O (serial buffer) 2+2 CDMU/1553 I/O 64

SpaceWire BUS I/O (serial buffer) 2+2 CDMU/EIU I/O 64

PacketWire BUS I/O (serial buffer) 4+4 CDMU/PDHU I/O 64

Boolean Latch Valve Command 18,16 CPS,MPS I 8

Boolean Latch Valve Status 18,16 CPS,MPS O 8

Analog (12-Bit) Simulated Pressure 4,16 CPS,MPS O 8

Integer (percent) Integrated FCV Pulse 16,16 CPS,MPS I 64

Analog (12-Bit) Simulated Flow Rate 16 MPS O 64

Analog (12-Bit) FSS (Q1 - Q4) Detector

Outputs

12 FSS1 - FSS3 O 8

Analog (12-Bit) FSS (T1 - T4) Test

Stimuli

12 FSS1 - FSS3 O 8

Analog (12-Bit) FSS Sun Presence

Signal

3 FSS1 - FSS3 O 8

Real (32-Bit) Gyro Stim Rates 3+3 GYRO1 - GYRO3 O 8

Boolean SHP Commands 192 CDMU/EIU I 8

Boolean Alarms 8 Various O 8

Boolean Bi-Level Telemetry

Simulation

32 Various O 8

Boolean Sep Straps 5 Sep Strap O 1

Boolean Relay Simulation 105 Various O 8

Analog (12-Bit) Voltage Simulation 46 Various O 8

Serial Link BUS I/O (serial buffer) 2 SREM I/O 1

Table 11-1: RTS Data Interface Summary Table

1 2 ... 70 71 72 73 74 75 76 77 78 79

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