SATCOM Theory
Equipment
Linkway (TDMA)
STT Operations
Setup
100
When a satellite rotates around Earth at the same rate it rotates giving it a "fixed" location in the sky from a ground station.
What is Geo-Synchronous Orbit?
100
This device amplifies the signal and downconverts it to L-Band.
What is the LNB?
100
This light flashes when it has Rx Lock and is solid when it has Tx Lock.
What is the SAT light?
100
The main controller BBRam fault on the HPA is what type of fault.
What is a start-up fault?
100
The trailer should be oriented in this direction.
What is the toward the equator?
200
Type of polarization used in Ku frequency band.
What is Linear?
200
This device displays the signal in a graph format, power by frequency, for the purpose of analysis.
What is spectrum analyzer?
200

This burst begins network synchronization, establishes a timing reference, and tells traffic terminals when the Acquisition Burst slots are.

What is the Reference Burst?

200
This is used to determine how level the STT is.
What are the ACU tilt sensors?
200
Where you center the spectrum analyzer to prove you're on the satellite.
What is the beacon frequency?
300
Varying one or more properties of a medium to encode information onto it.
What is modulation?
300
This device is utilized to manipulate the direction of the antenna.
What is Antenna Control Unit (ACU)?
300

The Linkway modem is considered transmit synchronized when three of these bursts are received by the MRT at the correct time slots.

What is the Acquisition Burst.

300
These are the steps to load the bootfile into the Linkway modem.
What is MaxView -> TDMA Screen -> Browse -> select bootfile -> Load bootfile?
300
Used to configure the FDMA modem and get satellite information.
What is Satellite Access Authorization (SAA) or a cutsheet?
400
Three bits of data are represented per symbol in this type of modulation.
What is 8PSK?
400
This device converts Serial connections to Ethernet for monitor and control purposes.
What is the Port Server?
400
Representation of signal quality by dividing the number of error bits received by the total amount of bits received.
What is Bit Error Rate (BER)?
400
The frequency entered into the Linkway modem when the SAT controller gives you a frequency of "14070.25" during a Cross-polarization Isolation procedure.
What is 1020.25?
400
Programmed into the ACU, used to locate satellites, displayed as signal strength.
What is beacon frequency?
500
Attenuation has an inverse relationship to this value.
What is power
500
This device combines and divides L-Band signals for both the Tx and Rx paths.
What is the RMR?
500

This command shows the IP addresses of neighboring Traffic Terminals in the network.

What is RTPRT?

500
The receive IF frequency of the transmitted IF frequency of 1150 MHz.
What is 1150 MHz?
500
The Volt-Meters should read this when CB1 is turned on.
What is 115V (L1) and 120V (L2)?
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