class Flashcards
Which operator directs approach and landing patterns ensuring aircraft are at a safe distance from each other? (5 mile radius)
Local Controller
Which operator uses radar displays to coordinate arrival and departure sequencing with the local controller?
Coordinator
Who is ultimately responsible for tower operations?
Watch Supervisor
How is AF sent to the tower?
Landlines
When transmitting, a radio processor switches what voltage to the line? (PTT)
26VDC
what is the thin metal plate in a carbon mic called?
diaphram
cell phones, computers, and hands-free devices have what kind of mic?
electret mic
What are the 3 main parts of a telephone?
speaker, mic, and hook switch
A typical ring signal is what voltage and frequency?
93VAC @20Hz
What allows you to make phone calls over the internet?
VoIP
PBX circuits are used as what?
dial lines
SS/SS-4 lines utilize what kind of signaling?
Frequency Shift Key
For loop start, what voltage does the ASU supply to one side of the line?
-48VDC
A telecommunication devices, the sampling rate will be
8000 times per second
A telecommunication CODEC will output a lan ____ digital signal word for each time it samples the input audio signal
8-bit
What is the highest frequency we should expect a telecommunications CODEC to convert into digital audio and then back again?
6.4kHz
All data for all channels will be placed on the digital audio bus every
125uS
By combining 32 digital channels onto a single ST bus, the resulting data stream will be
2,048,000 mbits/sec
Which bus type protocol is referred to as CEPT-1?
E1
operating voltage
27.5VDC
MAINS Voltage
240VDC
Back up battery voltage
26VDC
Load Voltage Cutoff (Threshold)
21.8VDC
Over voltage lockout
30VDC
If a fuse blows, the indicator adjacent to the fuse _____ and an alarm sounds
extinguishes
Operator and radio lines connect to the central rack equipment at ______________ panels.
distribution
Telephone conferencers serve up to ______ telephone lines.
30
What does the Configuration Control Group consist of?
Alarm unit High speed serial interface SCTs Gateway/SCT computer Remote SCT Router Nport
An operator position consists of what five (5) modules?
Speaker POTs module Jackbox PIP/Card File TED
What are the 3 types of system busses in the ETVS
control data bus
voice data bus
cluster bus
What happens if one Control Data Bus fails?
The backup will take its place
What is the maximum number of voice channels are in the ETVS?
480
What links the I/O ports of all of the TMU/CMU in the central rack?
Cluster Bus
When the self check fails in all 3 loopbacks what is wrong?
PIP
What uplink is reserved for Radio Processor and OP Processor?
Uplink 1
In the ____, a crosspoint switch places voice data into the correct time slot on up-link 1
Operator Processor (transmit)
the _____ unit multiplexes the voice data onto the voice data bus
tmu/cmu
in the _____, digitized signals are summed by a Digital Signal Processor and passed to a cross-point switch
confrencer
The ____ provides digital summation/confrencing of selected audio time slots
Operator Processor (receive)
Multiplexing, conferencing, and interfacing functional groups are installed in which card cage?
5U
Which Card cage houses the ring generator and the telephone cards
4U
how many card cages can be installed in a central rack
32 (divided into 0-15 and 16-31)
what performs the same tasks on telephone interfaces except they do not have access to the control data bus?
microcontrollers
What manages card audio switching, messaging, status and diagnostic operations on all processor/conference?
microprocessors
EEPROM vs EPROM
EEPROM Map Date
EPROM Firmware
Process of determining which discrete level correctly represents the amplitude of the input signal is what?
Quantization
the position generates dual tone multiple frequencies used for touch tone calls
DTMF (Dual tone multiple frequencies)
Talk-battery
Loop back What voltage?
Loop
-48VDC
This person communicates with aircraft and vehicles on the flight line
Ground Controller
This person monitors flying squadron operations and activities
supervisor of flying
Who communicates with external agencies that support the ATC Mission?
Flight Data
What are the three parts of the supervisor postion?
and what do they do?
Operator Processor (Supervisory Record) -distributes digital audio to up to 2 positions Supervisor Record Interface -converts digital to analog Supervisory Recorder -tape deck
Which button terminates Intercom and Telephone calls
Release button
Where can you find key attributes in the TO?
Table 3-2
Position status may be checked remotely via the _____
SCT
To route a single radio frequency between headset and loudspeaker, what key should you press?
Frequency Button
In the transmit path, microphone audio is digitalized by a CODEC and sent to the ________ over the ISDN link.
Operator Processor
Where is the digitized signal is decoded to an analog signal, conditioned, and output to a radio transmitter
Radio Processor
Where is the SS1/4 Telephone Device Type table in the TO?
Page 5-47
What does DALR stand for?
Digital Audio Legal Recorder
In the DALR1 the logger and NICE Inform Server are the same physical platform (NCF III); Whereas in the DALR2 the Logger and NICE Inform Server are seperate platforms?
DALR1 1 unit
DALR2 Separated into 2 units
What does the GPS Time Source do?
Provides an accurate time reference for the network
What provides access to the NICE Inform application suite?
Workstation
Which program is the application server and access hub of the system
The NICE Inform app
The NICE Inform app has what 3 main user software components
Monitor
Reconstruction
Organizer
(NICE Inform) What is the Monitor function?
Provides near real-time monitoring of audio on multiple channels.
(NICE Inform) What is the Organizer function?
it lets you manage collections of recordings and files
(NICE Inform) What is the Reconstruction function?
this is the playback tool in NICE format
(NICE Inform) What program monitors the alarms?
Castle Rock SNMP alarm monitoring program
Which contains a fully comprehensive guide to all available features?
Appendix A
When an event trap is received by the SNMP application, the message is read and the description is displayed in what tab?
Current
What does the status bar show?
Selected Functions
What does the status box show?
a fault in the system
Where in the TO can you find specific TED button functions
TO Table 3-1
What does the Operator Processor (supervisory record) do?
Distributes digital audio to uo to 2 positions
What does the Supervisor Record Interface do?
Converts digital to analog
What does the Supervisory Recorder do?
Records the analog audio to a tape deck