Mod 9: Unit 1-3 Review

During transmit operations, what sends information to the modem to be delivered?

What is the total number of ports on the NSM?

A computer is a device that provides an RS-232 connection to monitor and control the NSM.

Using a parabolic shape results in a much _____ gain than other antennas.

The four common characteristics that SATCOM terminals share are: A Reflector, Feed horn, Amplifiers, and Modem

What is used to amplify the radio frequency to a level suitable to reach the satellite?

How many PDP cases are included with the GMT?

How many CDI ports does the NSM provide?

ATTENUATION is used to control total power output.

After receiving data from the Data Terminal Equipment (DTE), what does the modem modulate the information into?

How many pallets are required to ship all 29 cases of the GMT?

The AN/TSC-179 and also known as the Ground Multiband Terminal (GMT)

What amplifies the gain of the received RF signal?

What randomizes data and makes it difficult to read without the proper key at the receiver?

The TUBE is the component in the Traveling Wave Tube Amplifier (TWTA) that heats up and amplifies the signal strength.

In transmit, the DTE provides data to the modem.

How many electronic cases are included with the GMT?

How many downlinks are there in each hub of a GMT?

DISTANCE is the reason why ground terminals often receive a weak downlink signal from the satellite.

What translates the IF into a usable radio frequency (RF)?

In transmit operations, the signal will leave the feed horn and strike the dish, focusing it into a concentrated beam.

The general purpose of a feed horn is to deliver signals between the transmitter/receiver and the parabolic dish.

In receive, the DTE receives the digital baseband signal from the modem.

What possesses a complex suite of equipment intended to pass tactical information thousands of miles away?

What conveys the transmit signal to the amplifier through a coaxial cable?

The feed horn is also capable of adjusting for different types of what?

The word modem stands for modulate-demodulate.

Power Distribution Panels (PDPs) are designed for use with 60 amp, five-wire power cable.

What uses mathematical algorithms to protect information using either a pre-shared key or a public/private relationship?

What sends the IF to the modem for data extraction?

What was the maximum data rate that the NSM can operate at?

How many transmit cases are included with the GMT?

What handles the movement of the data from ports to the multiplexer channels and from demultiplexer channels to ports?

The NSM is a synchronous time division digital multiplexer that is used in a satellite earth terminal.

What type of capability does the NSM has to interface the modem in the terminal radio equipment with ground equipment?

The GMT is a dual hub system.

A feed horn is used to pass the received signal from the satellite to the low-noise amplifier.

How many spare equipment cases are included with the GMT?

What receives the IF from the down converter where it is then used for data extraction?

What media is used more often to pass signals through a terminal to successfully connect to a COM satellite?

What format is the information the DTE sends to the modem to be delivered in?

How many feet does a local PDP has to be within of a local power source?

In receive, the signal from the satellite is reflected off of the parabolic dish and gets collected into the feed horn.

What translates the RF into an Intermediate Frequency (IF)?

What is used for transmitting and receiving microwave frequencies to and from space that includes a parabolic dish?

What is defined as a horn antenna that offers conveying of signals to-and-from the dish, often attached to waveguides?

What amplifies the gain of the RF signal to be able to reach the satellite?

How many feet can remote PDPs be separated from the local PDP?

The most commonly used amplifier for SATCOM is the Traveling Wave Tube Amplifier (TWTA).

When transmitting, the feed horn can focus the outgoing RF into a beam where it will reflect off of the parabolic dish.

In the event that power is interrupted, what might some systems be equipped with?

During LINEAR polarization, the feed horn can be adjusted to be either horizontal or vertical.

During CIRCULAR polarization, the feed horn can be adjusted to be either right or left-hand polarized.

The receiver consists of: A Low Noise Amplifier, Down Converter, and Modem

How many NRZ ports does the NSM provides?

During transmit, what modulates the information, turning the digital baseband into an analog Intermediate Frequency?

How many antenna cases are included with the GMT?

How many uplinks are there in each hub of a GMT?

The most notable bands that multiband satellite terminals are able to operate in are the C, X, Ku, or Ka bands.

The port router is an electronic patch panel that provides the interconnectivity of data flow.

What receives the IF from the modem and performs the final translation to transmit radio frequency?

In receive, the signal will reflect off the parabolic dish and go into the feed horn where it will be processed further.

What frequency is produced by the modem and is sent to the up converter?

Since the GMT is a dual hub system, it is capable of 2 uplinks and 12 downlinks.

What is the radio frequency received from the assigned satellite known as?

What amplifies the downlink signal without degrading signal-to-noise ratio?

What adds an artificial redundancy to a data stream and uses it to fix errors caused by noise and interference?

A transmitter consist of: A Modem, Up converter, and Amplifier

The four nodal configurations that the NSM can support are: Point-to-Point, Hub-spoke, Mesh, and Hybrid.

What shape of the reflector results in a much higher gain than other antennas?

How many T1/E1 ports does the NSM provide?

How many HSSI ports does the NSM provide?

How many NSM ports can be used in a single configuration?

How many feet can the remote PDP be from the source?