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Flashcards in PAAS Deck (35):
1

What does PAAS stand for?

Phased Array Antenna System

2

What is the function of PAAS?

to serve as the primary uplink from the ground station to the aircraft in a receive-only system; provides access to NIPRNET, SIPRNET, & DMS for transfer of e-mail and data files

3

What does DMS stand for?

Defense Messaging System

4

Where is the Phased Array Antenna (PAA) located?

top of aircraft, STA 1100

5

What are the power requirements for the Phased Array Antenna (PAA)?

Passive

6

What is the function of the Phased Array Antenna (PAA)?

to receive circular and linear polarized signals; to monitor internal overtemperature conditions and signal the PAA Power Supply to remove power when such a condition exists

7

Where is the Linear Polarization Converter (LPC) located?

overhead rack, STA 1075

8

What are the power requirements for the Linear Polarization Converter (LPC)?

>>><<<

9

What is the function of the Linear Polarization Converter (LPC)?

to convert linear polarization input signals to vertical or horizontal polarization signals

10

If the LPC receives a circular polarized signal from the PAA, it _____.

passes this signal through to the Low Noise Block (LNB)

11

If the LPC receives a linear polarized signal from the PAA, it _____.

performs addition or subtraction to the signal before sending it to the Low Noise Block (LNB)

12

Where is the Low Noise Block (LNB) located?

overhead rack, STA 1075

13

What are the power requirements for the Low Noise Block (LNB)?

>>><<<

14

What is the function of the Low Noise Block (LNB)?

to receive RF input from the LPC and convert Ku-band satellite frequencies, both lower and upper, to L-band frequencies, which are suitable for the Data Receiver

15

Over what frequency range does the lower Ku-band operate?

11.7 - 12.3 GHz

16

Over what frequency range does the upper Ku-band operate?

12.2 - 12.7 GHz

17

Over what frequency range does the L-band operate?

950 - 1,500 MHz

18

Where is the PAA Power Supply located?

overhead rack, STA 1075

19

What are the power requirements of the PAA Power Supply?

>>><<<

20

What is the function of the PAA Power Supply?

to convert 115 VAC 400 Hz power to DC power for the antenna, LPC, SPAC, & LNB; to monitor output power and indicate any fault status to the SPAC

21

What power does the PAA Power Supply output to each component?

6 VDC +/- 5 VDC to the antenna;
19.5 VDC to the LPC, SPAC, & LNB

22

Where is the System Phased Array Controller (SPAC) located?

overhead rack, STA 1075

23

What are the power requirements for the System Phased Array Controller (SPAC)?

19.5 VDC from the PAA Power Supply

24

What is the function of the System Phased Array Controller (SPAC)?

provide phasing and steering controls to PAA and control signals to PAA components; interface with Data Receiver and IRUs; control antenna element pointing; control LPC selection of circular vs linear polarization combining

25

Where is the RF Switch located?

overhead rack, STA 1075

26

What are the power requirements for the RF Switch?

>>><<<

27

What is the function of the RF Switch?

receive 2 input signals from SPAC; output 1 RF to Data Receiver

28

Where is the PAA/LAN Power Control Panel located?

P20 Bay 2

29

What are the power requirements for the PAA/LAN Power Control Panel?

28 VDC from PAA/LAN PWR c/b on P20 28 VDC DISTR 1B

30

What is the function of the PAA/LAN Power Control Panel?

to control power to the PAAS, CML, & 60 Hz Converter

31

Where is the Data Receiver located?

PAA overhead rack, STA 1075

32

What are the power requirements for the Data Receiver?

>>><<<

33

What is the function of the Data Receiver?

receive an L-band RF signal, decode it, & send it to CML control router

34

The Data Receiver can handle signals up to _____.

38.4 Kbps of data, video, or audio

35

Data Receiver signals both audio and video use _____.

MPEG-2 compression