DAISS

Question 1

What does DAISS stand for?

Answer 1

Digital Airborne Intercommunications and Switching Set

Question 2

What is the function of DAISS?

Answer 2

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

Question 3

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

Answer 3

5 total
4 in C1 cabinet
1 in P20 Bay 6

Question 4

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

Answer 4

28 VDC from RED EIU 1, 2, 3, & 4 on E42-1

28 VDC from RED EIU No. 5 on P20 Distr

Question 5

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

Answer 5

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

Question 6

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

Answer 6

C1 cabinet

2 total

Question 7

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

Answer 7

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

28 VDC from ACU 1 & 2 on E42-1

Question 8

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

Answer 8

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

Question 9

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

Answer 9

automatically switches to the alternate ACU

Question 10

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

Answer 10

3 total

C1 cabinet

Question 11

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

Answer 11

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

Question 12

What is the function of the Transmultiplexers (XMUXs)?

Answer 12

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

Question 13

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

Answer 13

2 total

P30 Bay 2; ACO station

Question 14

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

Answer 14

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

Question 15

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

Answer 15

provide operator interface for administrative and maintenance functions

Question 16

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

Answer 16

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

Question 17

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

Answer 17

28 VDC from DAISS 1 & 2 on E42-1

Question 18

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

Answer 18

operator interface to DAISS;

provide dialing and access to radio and ICS

Question 19

Where is the Maintenance Control Unit (MCU) located?

Answer 19

ACO station

Question 20

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

Answer 20

28 VDC from P5

Question 21

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

Answer 21

provide access to the CALL Intercom Network and Emergency PA Assembly

Question 22

Where is the Emergency PA Assembly located?

Answer 22

ACO station

Question 23

What are the power requirements for the Emergency PA Assembly?

Answer 23

28 VDC from P5

Question 24

What is the function of the Emergency PA Assembly?

Answer 24

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

Question 25

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

Answer 25

7 total 1 in Crew Rest 6 in Battlestaff

Question 26

What are the power requirements for the DAISS Loudspeakers?

Answer 26

28 VDC from DAISS 1 & 2 on E42-1

Question 27

What is the function of the DAISS Loudspeakers?

Answer 27

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

Question 28

Where is the Battlestaff Security Panel located?

Answer 28

Left Battlestaff Console

Question 29

What are the power requirements for the Battlestaff Security Panel?

Answer 29

28 VDC from BTSF SECURITY on E903-1

Question 30

What is the function of the Battlestaff Security Console?

Answer 30

to allow lockout or enabling of DAISS SDUs

Question 31

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

Answer 31

6 total | C1 cabinet

Question 32

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

Answer 32

TSECs 15-20

Question 33

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

Answer 33

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

Question 34

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

Answer 34

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

Question 35

What kind of FORTEZZA card contains both split ciks?

Answer 35

Fill Card

Question 36

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

Answer 36

User Card

Question 37

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

Answer 37

TPA Card

Question 38

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

Answer 38

Carry Card

Question 39

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

Answer 39

3 total | P30 Bay 1

Question 40

What are the power requirements for the STE RCUs?

Answer 40

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

Question 41

What is the function of the STE RCUs?

Answer 41

operate 2 STE terminals as a dual controller