Gaia
GAIA.ASU.SP.ESM.00007
Issue 2.00
Page 11 of 79
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GAIA.ASU.SP.ESM.00007 (Avionics SCOE Req Iss 2).doc
Figure 3.1-1 is a block diagram of the Avionics SCOE, illustrating its interfaces to the Gaia Spacecraft and
other EGSE: (This diagram is indicative only, and is not intended to impose an implementation on the
Avionics SCOE supplier)
Avionics SCOE
EG S E
L A N
H U B
R TN
H U B
Gyro 1
A vio n ic s S C O E
C o n trolle r
Avionics SCOE Instrumentation Bus
G yro Te st S tim u la tio n (S BD L)
L atc h V a lv e A cq uisitio ns (L V C )
M ic ropro pu ls io n
Ele ctr on ics (M P E)
M ic ropro pu ls io n
Ele ctr on ics (M P E)
Flo w C o ntro l V alv e Ac q uisitio ns (F C V)
G az F lo w S e ns or S im u la tio n (A N 2)
FS S H W IL S tim u la tio n T 1- T4 (A N 2)
Fi ne S un Se ns or
(F S S) # 2
F SS S im u la tio n ( De te cto r O u tp u t) (A N 2)
4
1 2
6
3
EIU
Pr im e/
R ed un da nt
F SS Ad d re ss L ine Ac q A 0-A 2 (0 -1 2V ) 9
Flo w C o ntro l V alv e Ac q uisitio ns (F C V)
L atc h V alv e S tatu s (R S A)
Pr es su re T ra n sd uc e r S im ula tio n (P T )
A n alo g V olta ge Sim u latio n (A N 1)
A n alo g V olta ge Sim u latio n (A N 2)
R elay S ta tu s S im u latio n (R S A)
B i- le ve l T e lem e try S im ula tio n (B L D)
S R EM S im ula tio n ( SB DL ) 4
S H P A c qu is ition (SH P)
SH P G e ne ratio n (S HP)
S H P A c qu is ition (SH P)
R ela y S ta tus S im u la tio n (R S A)
C D M U
Pr im e/
R ed un da nt
A la rm Sim ula tio n In te rfa ce ( R SA ) 8
E G S E 1 H z T es t In ter fa ce (P PS ) 2
R T
R T
R T
R T
R T
R T
C
C
C
C
C
C
BC
BC
C
C
BC
BC
C
C
SV M M IL -S TD -1 55 3B B U S In terfa c e A /B
(P rim e/R ed un da n t)
P LM M IL -S TD -1 5 53 B B U S In terfa c e A /B
(P rim e/R ed un da n t)
BC
BC
C
C
BC
BC
C
C
C DM U /E IU S pa ce W ire In te rfa ce s P /R
C D MU /P D H U P a cke tW ire In te rfa ce s P /R
Sta r
Tr ac ke r
# 2
R T
R T
C
C
Sta r
Tr ac ke r
# 1
R T
R T
C
C
R ea l T im e N etw ork
In te rfa ce ( R TN )
R T N
A P I
P
R
P o we r C on tro l
D is tr ib utio n U nit
PC D U
R T
R T
C
C
T ra ns pon de r #2
R T
R T
C
C
T ra ns pon de r #1
R T
R T
C
C
S VM P o we r Sim ula tio n (LC L)
P LM P ow er S im u latio n ( LC L)
R eg ula ted
Po we r
So urce
In stru m en ta tion In te rfa ce
C C S In te rfa ce ( LA N )
S ta r
T ra ck e r
S C O E # 1
S ta r
T ra ck e r
S C O E # 2
D yn am ic
F P A
Sim u la to r
RTN RTN RTN
R ea l T im e
Sim u la to r (R TS)
LAN LAN LAN
C en tral C he ck ou t
Sy ste m ( CC S )
C PS P rim e
Avionics SCOE
Rear Panel Interface
EGSE Interface
Panel
Gaia Skin/Arm
Connectors
PLM 1553 BUS (P/R)
SVM 1553 BUS (P/R)
C DU S yn ch ro nis atio n P u lse (T TL )
T O C D U E G S E
8
P D H U
P rim e/
R e du n da nt
R T
R T
C
C
2
2
2
2
Pr es su re T ra n sd uc e r S im ula tio n (P T )
L atc h V alv e S tatu s (R S A)
L atc h V a lv e A cq uisitio ns (L V C )
4
C & C In te rfa ce
H ou se ke e pin g T M
TS P
T im e M a na ge m en t
C e n tral
A rch iv e
D is c
S C ET C orr ela to r
IR IG R ece ive r
DATATION IRIG-B
Gyro 1
R T
R T
C
C
P
R
Gyro 1
R T
R T
C
C
P
R
M PS P rim e
M PS R dt
C PS R dt
Fi ne S un Se ns or
(F S S) # 1
Fi ne S un Se ns or
(F S S) # 3
4
2 +2
4 +4
1 8
1 6
4
1 8
9 6
9 6
9 6
6 4
1 08
1 6
1 6
1 6
1 6
1 6
V id eo
P ro ce ss in g
U nits P /R
Ac tiv e
In te rfa ce
Bo x
R TS
S y nc h
A ctive
In te rfa ce
B o x
3 2
9 6
Figure 3.1-1: Avionics SCOE Block Diagram
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