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SECONDA UNIVERSITA' DEGLI STUDI DI NAPOLI ... - CO.RI.STA

SECONDA UNIVERSITA' DEGLI STUDI DI NAPOLI ... - CO.RI.STA

SECONDA UNIVERSITA' DEGLI STUDI DI NAPOLI ... - CO.RI.STA

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Timing Command From To IF Note<br />

T0 SIGNAL CDMU PDU TTL TTL enabled<br />

T0 +<br />

T 2min<br />

ALIVE OBC CDMU SER 2 ALIVE signal sent periodically each 2<br />

min<br />

... ... ... ... ... ...<br />

T0 +<br />

T 2min<br />

TM CDMU DU SER 1 Ancillary data Telemetries sent each 2<br />

min<br />

... ... ... ... ... ...<br />

T0 +<br />

T 2min<br />

TM_:RAD OBC CDMU SER 2 Radar data Telemetries sent each 2<br />

min<br />

... ... ... ... ... ...<br />

T0 + A <strong>DI</strong>S_RAD_ACHK CDMU OBC SER 2 Autocheck disabling command<br />

T0 + B<br />

T0 + C<br />

T0 + D<br />

<strong>DI</strong>S_RAD_ACHK_A<br />

CK<br />

EN_PSUMMING<br />

/<strong>DI</strong>S_PSUMMING<br />

EN_PSUMMING_A<br />

CK<br />

/<strong>DI</strong>S_PSUMMING_A<br />

CK<br />

OBC CDMU SER 2 Acknowledge of previous command<br />

CDMU OBC SER 2 Pre-summing enabling/disabling<br />

command<br />

OBC CDMU SER 2 Acknowledge of previous command<br />

T0 + E RAD_<strong>STA</strong>RT CDMU OBC SER 2 Start acquisition command<br />

T0 + F RAD_<strong>STA</strong>RT_ACK OBC CDMU SER 2 Acknowledge of previous command<br />

T0 + G RAD_<strong>STA</strong>RT_OK OBC CDMU SER 2 OK start acquisition message<br />

T0 + H<br />

RAD_<strong>STA</strong>RT_OK_A<br />

CK<br />

CDMU OBC SER 2 Acknowledge of previous command<br />

T0 + I RAD_STOP CDMU OBC SER 2 Stop acquisition command<br />

T0 +L RAD_STOP_ACK OBC CDMU SER 2 Acknowledge of previous command<br />

T0 + M RAD_STOP_OK OBC CDMU SER 2 OK stop acquisition message<br />

T0 + N<br />

RAD_STOP_OK_AC<br />

K<br />

CDMU OBC SER 2 Acknowledge of previous command<br />

T0 + O RAD_SHUT_DOWN CDMU OBC SER 2 OBC shut-down command<br />

T0 + P SIGNAL CDMU PDU TTL TTL disabled<br />

Tabella 1- 1: sequenza Measurement<br />

13

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