Data Modem Subsystem Flashcards Preview

ACOM/IFT CAT 1 > Data Modem Subsystem > Flashcards

Flashcards in Data Modem Subsystem Deck (16):
1

Where are the Modem Controls located? and how many are there?

2 total
P30 Bay 2

2

What are the power requirements for the Modem Controls?

28 VDC from E905
(through their respective modem)

3

What is the function of the Modem Control?

provide power control, operation mode selection, and status indication for its respective Digital Modem

4

Where is the TSEC Mode Select Panel located?

P20 Bay 5

5

What are the power requirements for the TSEC Mode Select Panel?

28 VDC from 28 VDC DISTR 1A

6

What is the function of the TSEC Mode Select Panel?

allows patching between the desired TSEC 1,2, or 3 and Digital Modem 1 or 2 to provide timing and control signals between them

7

Where are the Digital Modems located and how many are there?

Second shelf from the top of C4
2

8

What are the power requirements for the Digital Modems?

115 VAC 400 HZ from E905

9

Over what circuits does the Digital Modem provide reliable communications?

HF, UHF, Telephone voice circuits

10

Where is the Modem Switch Panel located?

P30 Bay 3

11

What are the power requirements of the Modem Switch Panel?

Passive

12

What is the function of the Modem Switch Panel?

switch between the Command Management Local Area Network (CMLAN) System Modems and the automatic Digital Modems (ADIS)

13

Where is the Data Status Panel located?

P30 Bay 2

14

What are the power requirements of the Data Status Panel?

28 VDC from 28 VDC DISTR 2

15

What is the function of the Data Status Panel?

monitors the status of the data line connections to the Digital Airborne Intercommunications and Switching Set (DAISS)
used to disconnect the UHF lines from the two Electrical Interface Units (EIUs) within DAISS

16

How long must you hold the DISC (disconnect) switch on the Data Status Panel?

10 sec