LAT EQUIPMENT EMI REQUIREMENTS PART TWO CONDUCTED EMISSIONS AND SUSCEPTIBILITY

4/12/04 FMB2

4/12/04 FMB3 DEFINITIONS A – LAT TO SPACECRAFT INTERFACE (REQUIREMENT) B – INPUT TO THE TPS, EPU, GASU; PDU INTERNAL POST FILTER (REQUIREMENT) C – EQUIPMENT POST FILTER LEVEL (REFERENCE ONLY)

4/12/04 FMB4 CE102 LAT DAQ A

4/12/04 FMB5 CE102 LAT DAQ A Spacecraft PRU - LAT DAQ interface; Figure 16a. from the 0005 document

4/12/04 FMB6 CE102 LAT DAQ B

4/12/04 FMB7 CE102 LAT DAQ B 21 units; 19 ~ equal power draw RSS emissions from 21 units All equipment emitting 14 dB below the LAT instrument level limit will be equivalent to the LAT DAQ A limit EMI filter provides 40 dB minimum from 100K - 50MHz Therefore, increase limit by 26 dB from 100K - 10MHz

4/12/04 FMB8 CE102 LAT DAQ C

4/12/04 FMB9 CE102 LAT DAQ C EMI filter provides 40 dB minimum from 150K - 50MHz Therefore, increase the LAT DAQ B limit by 40 dB from 150K - 10MHz This is a reference level only

4/12/04 FMB10 CE102 LAT SIU A

4/12/04 FMB11 CE102 LAT SIU A Spacecraft PRU - LAT SIU interface; Figure 16b. from the 0005 document

4/12/04 FMB12 CE102 SIU C

4/12/04 FMB13 CE102 LAT SIU C EMI filter provides 40 dB minimum from 150K - 50MHz Therefore, increase limit by 40 dB This is a reference level only

4/12/04 FMB14 CE102 LAT UNREG POWER

4/12/04 FMB15 CE102 LAT UNREG POWER Spacecraft PDU - LAT interface; Figure 16c. from the 0005 document

4/12/04 FMB16 CECM LAT

4/12/04 FMB17 CECM LAT Applicable to all units; Figure 17 from the 0005 document Grounding techniques employed by the LAT negates the necessity to apportion contributions from all units

4/12/04 FMB18 CS102 LAT DAQ A

4/12/04 FMB19 CS102 LAT DAQ A Spacecraft PRU - LAT DAQ interface; Figure 23a. from the 0005 document

4/12/04 FMB20 CS102 LAT DAQ B

4/12/04 FMB21 CS102 LAT DAQ B EMI filter provides 40 dB minimum from 100K - 50MHz Therefore, decrease CS102 LAT DAQ A limit by 34 dB, allowing for a 6 dB margin; from 100K to 10MHz

4/12/04 FMB22 CS102 LAT DAQ C There is no reference level for LAT DAQ C EMI filter provides 40 dB minimum from 150K - 50MHz Therefore, decreasing CS102 LAT DAQ B by 34 dB would provide a physically unrealizable limit (below 0.0 amps)

4/12/04 FMB23 CS102 LAT SIU A

4/12/04 FMB24 CS102 LAT SIU A Spacecraft PRU - LAT SIU interface; Figure 23b. from the 0005 document

4/12/04 FMB25 CS102 LAT SIU C

4/12/04 FMB26 CS102 LAT SIU C EMI filter provides 40 dB minimum from 150K - 50MHz Therefore, decrease CS102 LAT SIU A limit by 34 dB, allowing for a 6 dB margin; from 150K - 10MHz This is a reference level only

4/12/04 FMB27 CS102 LAT UNREG POWER

4/12/04 FMB28 CS102 LAT UNREG POWER Spacecraft PDU - LAT interface; Figure 23c. from the 0005 document

4/12/04 FMB29 CSCM LAT

4/12/04 FMB30 CSCM LAT Instrument conducted susceptibility common mode requirement; Figure 23d. from the 0005 document

4/12/04 FMB31 DEFINITION - OPERATE Operate is defined as the ability to withstand the applied environment without malfunction, loss of capability, change of operation state/mode, memory changes or need for outside intervention. Operate is the ability of an instrument to execute all ancillary and housekeeping tasks including self test but does not include the ability to take scientific data.

4/12/04 FMB32 CS06 LAT OPERATE

4/12/04 FMB33 DEFINITION - PERFORM Perform is defined as the ability to execute its science mission or to meet its specified performance. Perform requires that the Operate criteria be met.

4/12/04 FMB34 CS06 LAT PERFORM

4/12/04 FMB35 DEFINITION – SURVIVE Survive is defined as the ability to withstand the applied environment without any permanent loss of performance capability. Survival is required for both powered and unpowered states.

4/12/04 FMB36 CS06 LAT SURVIVE Still TBS in the 0005 document This survive relates directly to a fuse blow scenario (fuse, solid state breaker, polyswitch) Results from the fusing study should allow SAI to complete this requirement for the instruments and the spacecraft