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Flashcards in DAISS Deck (41):
1

What does DAISS stand for?

Digital Airborne Intercommunications and Switching Set

2

What is the function of DAISS?

audio and data interface for onboard, air-to-air, and air-to-ground communications

3

Where are the Electrical Interface Units (EIUs) located and how many are there?

5 total
4 in C1 cabinet
1 in P20 Bay 6

4

What are the power requirements for the Electrical Interface Units (EIUs)?

28 VDC from RED EIU 1, 2, 3, & 4 on E42-1
28 VDC from RED EIU No. 5 on P20 Distr

5

What is the function of the Electrical Interface Units (EIUs)?

provide an interface between DAISS and aircraft equipment: Radio, Cryptic, Data, Power Amplifier (PA)
secure communications

6

Where are the Attendant Control Units (ACUs) located and how many are there?

C1 cabinet
2 total

7

What are the power requirements for the Attendant Control Units (ACUs)?

115 VAC 400 Hz from DAISS ACU 1 & 2 on E42-1
28 VDC from ACU 1 & 2 on E42-1

8

What is the function of the Attendant Control Units (ACUs)?

provide all control function of the DAISS; op programs; BIT

9

What happens if an Attendant Control Unit (ACU) fails?

automatically switches to the alternate ACU

10

Where are the Transmultiplexers (XMUXs) located and how many are there?

3 total
C1 cabinet

11

What are the power requirements for the Transmultiplexers (XMUXs)?

115 VAC 400 Hz from DAISS MUX 1, 2, & 3 on E42-1

12

What is the function of the Transmultiplexers (XMUXs)?

creates 15 channels out of 1 frequency input;
combines 15 channels into 1 frequency output;
interface between DAISS and Frequency Division Multiplex (FDM)

13

Where are the Status Display Units (SDUs) located and how many are there?

2 total
P30 Bay 2; ACO station

14

What are the power requirements for the Status Display Units (SDUs)?

28 VDC from DAISS 1 & 2 on E 42-1

15

What is the function of the Status Display Units (SDUs)?

provide operator interface for administrative and maintenance functions

16

Where are the Subscriber Station Units (SSUs) located and how many are there?

10 total
P30 Bay 2; ACO station; 6 in Battlestaff area;
2 in fwd Crew Rest area

17

What are the power requirements for the Subscriber Station Units (SSUs)?

28 VDC from DAISS 1 & 2 on E42-1

18

What is the function of the Subscriber Station Units (SSUs)?

operator interface to DAISS;
provide dialing and access to radio and ICS

19

Where is the Maintenance Control Unit (MCU) located?

ACO station

20

What are the power requirements for the Maintenance Control Unit (MCU)?

28 VDC from P5

21

What is the function of the Maintenance Control Unit (MCU)?

provide access to the CALL Intercom Network and Emergency PA Assembly

22

Where is the Emergency PA Assembly located?

ACO station

23

What are the power requirements for the Emergency PA Assembly?

28 VDC from P5

24

What is the function of the Emergency PA Assembly?

provide ACO access to DAISS during normal operation or direct access to aircraft PA system during an emergency

25

Where are the DAISS Loudspeakers located and how many are there?

7 total
1 in Crew Rest
6 in Battlestaff

26

What are the power requirements for the DAISS Loudspeakers?

28 VDC from DAISS 1 & 2 on E42-1

27

What is the function of the DAISS Loudspeakers?

to amplify the SSU audio output and provide it to the operator

28

Where is the Battlestaff Security Panel located?

Left Battlestaff Console

29

What are the power requirements for the Battlestaff Security Panel?

28 VDC from BTSF SECURITY on E903-1

30

What is the function of the Battlestaff Security Console?

to allow lockout or enabling of DAISS SDUs

31

Where are the Secure Terminal Equipments (STEs) located and how many are there?

6 total
C1 cabinet

32

The 6 Secure Terminal Equipments (STE) are also known as _____.

TSECs 15-20

33

What are the power requirements for the Secure Terminal Equipments (STEs)?

115 VAC 400 Hz from TSEC 15, 16, 17, 18, 19, & 20 on E42-1

34

What is the function of the Secure Terminal Equipments (STEs)?

to provide voice/data encryption with an integral wire line MODEM

35

What kind of FORTEZZA card contains both split ciks?

Fill Card

36

What kind of FORTEZZA card contains operational keys & split cik A?

User Card

37

What kind of FORTEZZA card allows changes to security settings of a specific STE?

TPA Card

38

What kind of FORTEZZA card contains cik split B and is used to associate a User Card with another STE?

Carry Card

39

Where are the STE RCUs located and how many are there?

3 total
P30 Bay 1

40

What are the power requirements for the STE RCUs?

28 VDC from STE RCU 1, 2, & 3 on P30 DISTR 2

41

What is the function of the STE RCUs?

operate 2 STE terminals as a dual controller