(4)
Digital Flight Data Acquisition Card (DFDAC)
B. The ULCs and the SCIDs are programmable. By using pin programming the ULC and the SCID cards can assume more than one identity based on their slot location in the MAWEA. For example, a ULC will behave as master monitor card A when installed in slot three, and as the crew alerting card when installed in slot seven. The card functions and types are:
(1) Master monitor cards A and B (ULC)
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MAWEA Input Block Diagram
Figure 3
D20816
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J1 J2 J3 J4
J5 J6 J7 J8 J9
SEE A
SEE B SEE B
POWER
POWER
SUPPLY
SUPPLY
J10 J11 J12 J13 J14 J15 J16 J17 J18 J19 J20 J21 J22 J23
MAWEA
POWER SUPPLY MONITOR JACKS
N638K
BO
AIRPLANE ID
POWER
CODE BUTTONS ARINC ARINC
SUPPLY
(EXAMPLE CODE) PSEU A B
PSEU FCU RARA FCU
FMC FMCADC ADC
+12
IRS MCP IRS L-EIU
BUS
R-EIUC-FCU HS/EIU
SELECTOR
B
B SWITCH
A -12 A
+5 TEST TEST
ARINC 429 GND MONITOR JACKS LEFT STALL
L T/O
R LDG WARNING STALL CONFIG
STALL CONFIG LANDING TEST JACK
FAIL FAIL
CONFIGURATION TEST JACK TAKEOFF
POWER SUPPLY MONITOR RIGHT STALL
CONFIGURATION LIGHTS (RED) WARNING TEST JACK
TEST JACK MAWEA MONITOR PANEL
A
MAWEA POWER SUPPLY
B
MAWEA Monitor Panel and Power Supplies
Figure 4
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(2)
Crew alerting card (ULC)
(3)
Configuration warning card (ULC)
(4)
Stall warning management cards (ULC)
(5)
Signal collection cards (SCID)
(6)
Tail identification card (SCID)
C. Master Monitor Cards
(1) The master monitor cards perform the following functions:
(a)
Collect all warning inputs.
(b)
Provide outputs to the master warning lights.
(c)
Provide outputs to the aural synthesizer cards.
(d)
Route information derived from six ARINC 429 input buses to other MAWEA cards.
