Block II Flashcards
What bands can the METs be configured as?
X-Band only, X-Band and Ka-Band, or X-Band, Ka-Band, and Dual Ka-Band.
What does “MET” stand for?
Modernization of Enterprise Terminals
The Modernization of Enterprise Terminals (MET) consists of three antenna sizes:
Large Fixed Terminal
Standard Transportable Terminal
Small Fixed Terminal
What are some important key points to remember when it comes to the MET program?
- Introduction of X-Band Block Up- and Downconverters
(BUC/BDC) and upgrade to Solid State Power Amplifiers (SSPA) - Ka-Band capability greatly increases the data flow capability of
Enterprise Terminals - Ka-Band waveguides are much smaller than the X-Band
waveguides due to the frequency differences. - Ka-Band equipment is located in the hub (on back of the dish)
due to the high loss associated with Ka frequencies - primarily utilize WGS satellites
What does EEB stand for and what is it?
Electronic Equipment Building
This may or may not be hardened, and contains the electronic equipment necessary to support the Large Fixed Antenna.
What does “LFA” stand for?
Large Fixed Antenna
What is the “Antenna Group” (AG)?
Comprises the hub assembly and pedestal base
What components make up the pedestal?
- X-Band HPAs (SSPA)
- X-Band BUCs
- Air Handler
- HPA System Loads
- Lighting
- Antenna Drive Unit & Antenna Control Unit
- Dehydrators
- Critical Power Panel
- Non-Critical Power Panel
- Signal Distribution Panel
- Alarms, phone, emergency OFF switch, fire extinguisher
Reference- MET Overview pg 11
What components make up the hub?
- Scanner plate assy
- Ka-band BDC assy
- Ka-band RFAA assy
- Cable interface
- Ka-band switching & combining network (POL 1)
- Ka-band BUC plate assy
- Ka-band TLT & power sensor
- Discrete Interface Units
- 5 MHz DA
- DC Power Supply
- RS-485 Server & Fiber Optic Transciever
- X-Band BDC Assy
- X-Band RFAA Assy
- X-Band TLT
- Ka-band Switching & Combining Network (POL 2)
- Feed RF Interface Plate
- Ka-band HPA (POL 1)
- Ka-band HPA (POL 2)
What components make up the EEB?
This will vary from site-to site.
MET configruations commonly use:
- MCE - part of the operations group
- PMTS - part of the operations group
- FTSS - part of the operations group
- Antenna Subsystem
- Transmit Subsystem
- Receive Subsystem
The following are deployed on a site specific basis:
- LSS
- LBCD
- SCCS
- FOICF
PG 9-10 MET
The AG is capable of simultaneously transmitting and receiving…?
X-Band and Ka-band satellite c0mmunications
X and Ka utilize different…?
amplifiers
*** Their TX/RC communications functions are similar
What is the “Hub Assembly”
This is where equipment is mounted on plates or separate rack-mounted chassis that can be accessed with the hub assembly doors opened.
What is the “BCU”?
Blower Control Unit
This controls the operation of the blowers located at the top of the hub assembly that provides ventilation air to the assembly.
This is located in hub assembly slot 1.
What is the “ADC”?
Azimuth Drive Components
The AZ (azimuth) drive motor receives control signals from the ADU (antenna drive unit)
Reference???
What is the “ADU”?
Antenna Drive Unit
This contains all the hardware and firmware to generate the signals required to drive the antenna in azimuth and elevation.
- azimuth - left to right
- elevation - up and down
PG 67 MET
What parts make up the ADA?
Azimuth Drive Assembly:
AZ Motor Control Box
AZ Motor
AZ Brake
Gear Reducer
What is the “EDA”?
Elevation Drive Assembly
The EL Motor Drive receives drive control signals from the ADU to rotate the reflector about the EL axis.
What is the “PSS”?
Platform Safety Switches
There are two types of emergency power-off (EPO) switches are mounted on the platform. Both are pushbutton switches. These switches are known as “terminal EPO” and “antenna/TX EPO”
What is on the pedestal exterior?
The Lightning Protective Device (LPD) provides a signal interface between the Antenna Terminal equipment and the EEB equipment.
What is the “ACU”?
Antenna Control Unit
This is used for antenna control and monitoring and can be set up to operate locally, using the front panel controls, remotely using the Portable Maintenance Unit (PMU) or remotely using the CMA in the EEB, the normal mode of operation.
What is the “PMU”?
Portable Maintenance Unit
This is used to execute remote manual rate control and position jogging for each axis of antenna.
** It connects to the ADU using a 100-ft cable.
What is the “DP-9 Control/Status Panel”?
The Deicer Subsystem is installed at selected sites to heat the reflector panels to prevent the buildup of snow or ice on the reflector surface during inclement weather.
***This, is connected directly to the AGTS using a RS-485 serial interface. pg 14 MET.
The Antenna subsystem uses positive-pressure dry air in the waveguides to prevent ___.
corrosion
What does ETI allow?
Elapsed Time Indicator
These allow dual dehydrators for redundancy
How many ETI dehydrators are installed in the pedestal?
Two
** these are separately powered
Where are ECU condensers located?
By the Inter-Facility Link (IFL) trench between the EEB and the antenna terminal.
Terminal Emergency Power Off (EPO) Switches shuts down terminal equipment by…?
tripping the critical and non-critical bus main circuit breakers for the entire antenna terminal
ANT/TX EPO when pressed does what?
Immediately removes power being supplied to the ADU and power being supplied to the SSPAs and Ka-Band HPAs.
pg 21 MET (ANT/TRANS button)
What is the “EMC”?
These modules convert fiber-optic signals to Ethernet signals or Ethernet signals to fiber-optic signals for communication between the EEB and the Antennas
What does the 16-port Ethernet Switch do?
Switch provides the command, control and monitoring link between the Antenna Group (AG) rack and the CMA.
What is the “IFL”?
Interfacility Link
A below-ground, covered cable trench, called an Interfacility Link (IFL) runs from the base of the antenna to the EEB and is an integral component of the concrete foundation.
The design of the trench prevents the pooling of standing water and an automatic sump pump will remove water from the sump.
The IFL extends power and signals between the…?
Antenna and the EEB
Along with the new antennas, the modernization program upgrades associated SATCOM equipment including…?
Command, Monitor and Alarm (CMA)
Performance and measurement testing (PMTS)
Frequency and time standard (FTSS)
Transmit and receive subsystems
Equipment subsystems are designed to support up to __ MET terminals simultaneously.
Six
What is the MCE?
MET Computing Environment (Rack 2)
Manages equipment using Ethernet, Serial and discrete interfaces.
The MET Computing Environment (MCE) is the means for control and status monitoring of theSatellite Communications Terminal (SCT). It is comprised of equipment that makes up the physical network that connects the SCT devices, terminal servers, operator consoles, and related software.
The central connection point for the MCE is the MET Master Terminal Server (MMTS). The MMTS contains the core Control Monitor Alarm (CMA) software, authenticates users, and
coordinates status and control information for all devices in the SCT. The MMTS is connected to the Ethernet LAN, which provides connections to all OCs, all AGs, PMTS, FTSS, LSS.
pg 12 MET
What equipment is in the MCE rack?
- 52 port ethernet switch (master) (2A1)
- Operator Console (OC1) (2A4)
- MET Master Terminal Server (MMTS) (2A5) which hosts:
- Control, Monitor, and Alarm (CMA) software
- Interactive Electronic Technical Manual (IETM)
- Logistics Data Collection Function (LDCF) software, and other MET software components
All networked equipment is monitored by the…?
CMA (Control, Monitor and Alarm)
The ___ allows Ethernet LAN communication between the racks in the Antenna Group (AG) and Electronic Equipment Building (EEB) and MCE.
52-Port Ethernet Switch (A2A1)
*** This is housed on the MCE rack
What is the difference between the Terminal Button and the Ant/Trans Button on the MCE Emergency Function module?
- Terminal Button - removes power from equipment attached to Critical AC Power
Panel and Non-Critical AC Power Panel. - Ant/Trans Button - removes power from equipment attached to antenna Pedestal
Critical AC Power Panel and Non-Critical AC Power Panel.
What is an “OC”?
Operator Console
Essentially, just a laptop
What is the “MMTS”?
Master Terminal Server
This is a centralized control point for all control and status (C/S) information for all MET devices.
It also authenticates users, and communicates status and control information to the Ethernet network and serial port interfaces.
The ___ runs the core CMA software.
MMTS
What do “Media Converters” provide?
These modules convert fiber optic signals to Ethernet signals or Ethernet signals to fiber-optic signals for communication between the EEB and the Antenna(s)
This provides all of the test signal generation, measurement, signal routing, and calibrations for up to six collocated MET terminals.
Performance Monitoring and Test Subsystem (PMTS) (Rack 3)
What does the PMTS rack consist of?
– Performance Monitoring Function (PMF)
– Automated Test Function (ATF)
– Signal Routing Function (SRF)
– X-Band and Ka-Band test translator functions
– Automatic Downlink Calibration Function (ADCF)
PMTS is managed by the __ subsystem
CMA
The Ethernet Switch has __ ports.
16
This allows Ethernet devices in the PMTS rack to be controlled by the Operator Console (OC) attach to the Ethernet LAN.
16-Port Ethernet Switch (3A1)
*** The Signal Generators, Spectrum Analyzers, Universal Serial Bus (USB) Ethernet Media Converters, and RF Matrix Switches are connected to
the Ethernet Switch.
These create a high-quality modulated carrier wave that is used to test RF equipment. They are capable of producing signals at frequencies between 9 kHz thru 3.2 GHz, with signal strength between -120 dBm and +13 dBm.
Signal Generator
*** The Signal Generators can be connected to any offline uplink equipment string to
test individual equipment or the entire system. They are also used to inject pilot tones for the Automatic Downlink Calibration Function (ADCF).
How many spectrum analyzers are on the PMTS rack?
Two (3A8 and 3A9)
These measure the power level of a given frequency or range of frequencies. The
frequency range is 9 kHz thru 3 GHz, which allows direct measuring of L-Band frequencies.
Spectrum Analyzer
To measure other frequencies used in the MET system, the Spectrum Analyzers are used in conjunction with…?
The offline BUCs, BDCs, Equalizers, the Test Loop Translator, and LNAs.
The ___ spectrum analyzer unit is dedicated to the Automated Test Function (ATF) and can be patched to any output on the patch panels.
3A8
The ___ spectrum analyzer unit is dedicated to the Performance Monitoring Function (PMF) and is connected to one output of Dual
Line Amps Assembly 3A14.
3A9
The spectrum analyzer operates in the ___ band only.
L
These allow for automatic or operator-directed routing of test signals to test equipment or injection points.
The RF Matrix Switches (A10-A13, A17, and A18)
The RF Matrix Switches eliminate the need for…?
multiple system-wide test equipment
patch panels.
Up to ___ switches can be used for the PMF, and up to ___ switches can be used for the ADCF.
three
two
This is a dual-channel Line Amplifier that
provides amplification for PMF signals to be measured by the Spectrum Analyzer and RF Power Sensor.
The PMTS Dual Line Amps Assembly (3A14)
It is used in conjunction with the PMTS Attenuator Assembly to equalize signal levels applied to the PMF Spectrum Analyzer across all measurement paths.
The PMTS Dual Line Amps Assembly (3A14)
Each channel gain is adjustable from __ to __ dB and is normally adjusted during installation.
0 to +24 dB
This is an internal tray located below the Coax Patch Panels.
The Component Mounting Tray Assembly (3A2)
*** The components allow for test signal routing through the PMTS rack. The
components include RF Power Sensors (USED FOR TESTING), USB Ethernet Media
Converters, an RF Switch, an Low Freq RF Combiner/Divider, and L-Band RF
Combiner/Dividers.
This rack provides reference signals for up to six MET terminals.
Frequency and Time Standard Subsystem (FTSS) Rack 4
What are the major components of the FTSS Rack?
- Major Components Include:
– Static Transfer Switch (4A1)
– 16-Port Ethernet Switch(4A2)
– GPS receiver (GPS Ant on top of building)(4A5A1)
– 1PPS Sync Panel (4A5A2)
– High Performance Timing System (HPTS)(4A12)
– 2 Primary Reference Sources(PRS)(4A19/4A26)
– 2 Battery Backup Units (BBUs)(4A31/4A35)
Can utilize external signals to
generate the required output reference
signals.
FTSS Rack 4
This allows Local Area Network (LAN)
communication with the MET Master Terminal Server (MMTS) in the MET
Computing Environment (MCE) Rack.
16-Port Ethernet Switch (4A2)
This provides the normal source for 1pps timing signals for the FTSS and the SCT.
GPS Receiver (A5A1)
It also provides two 10-MHz signals to the HPTS and an Inter-Range
Instrumentation Group B (IRIG-B) signal to the SCT.
GPS Receiver (A5A1)
Central point for managing the selection, signal conditioning, monitoring, and
distribution of 1pps timing signals within the FTSS.
It provides a secondary function of interfacing the Cesium Oscillator diagnostic port
on each Primary Reference Source (PRS) to the user network interface for monitoring
and control.
It also provides steering commands to the two Cesium Oscillators to synchronize the
PRS 1pps outputs with the GPS Receiver 1pps timing signal.
Sync Panel (A5A2)
This houses two frequency conversion
modules.
100-MHz Distribution Assembly (A6)
Reference???
The two frequency conversion modules in the Distribution Assembly (A6) convert a __ MHz input into a __ MHz output.
5
100
***The 100 MHz outputs are supplied to the 100-MHz OSMs in the HPTS.
The chassis also holds two DC power supplies, one for each conversion
module.
This provides 1pps, 1-MHz, 5-MHz, 100-MHz timing signals, and IRIG signals to the FTSS and SCT.
It also provides a 1pps timing signal to the Sync Panel.
High Performance Timing System (A12)
HPTS pg 34 MET
This is a piece of equipment that is part of the FTSS rack (Frequency and Time Standard Subsystem) pg 31 MET
- 1PPS/IRIG OSM (A12A5) - generates eight 1pps
signals to outputs (J1-J8). - Also uses the TOD data from the MCM
to generate an IRIG signal that is sent to (J9-J15). - 5-MHz/1-MHz OSM (A12A7, A12A8) - creates a
5-MHz signal that is buffered, isolated, and sent
to outputs (J1-J8).
-5-MHz signal is also filtered, buffered,
isolated and sent to (J9-J12) as 1-MHz outputs. - 100 MHz OSM (A12A9, A12A10) - provides a
precision 100-MHz signal that is buffered,
isolated and sent to (J1-J10) as 100-MHz outputs.
This provides 1-MHz, 5-MHz, and 1pps unswitched output timing signals to external users.
A 1pps and 100-MHz output timing signals are also provided to the Sync
Panel for use throughout the SCT.
It is powered from the AC line supply and 24-VDC input from the BBU, so
operation will continue uninterrupted in the event AC power is lost.
Phase Lock Loop (PLL) Module (A14, A21)
This houses the Cesium Oscillator.
Primary Reference Source (PRS) Chassis (A19, A26)
How many PRS Chassis are in the FTSS?
Two
The ___ PRS Chassis (A19) (PRS1) contains a signal conditioner module.
upper
This receives an external 5-MHz signal and doubles it to form a 10-MHz signal.
This 10-MHz signal is conditioned and then split into two 10-MHz outputs.
The two 10-MHz conditioned signals are sent to each MCM.
Signal Conditioner Module (A19A2)
This provides a 10-MHz timing reference signal to the PLL Module(4A14, A21) to produce “unswitched” 5 MHz, 1 MHz, and buffered 10 MHz timing
signals.
Cesium Oscillator (A19A1, A26A1)
*** There are two of these within the PRS (timing systems 4A19 & A26 on the FTSS rack)
pg 35 - 36 MET
This provides L-Band switching capability, connecting a large number of L-Band Modem signals (48 to 192) to multiple X-Band or KaBand Antennas (up to 24) for uplink (transmit)
or downlink (receive) applications.
L-Band Switching Subsystem (LSS) Rack 41, 45
*** pg 41 MET
The LSS can be configured to support the site-specific mission with one of the configurations listed in figure #.
The Fort Gordon MET LSS is a 12 x 48 configuration, meaning it can support up to a combination of 12 frequency connections and as many as 48 user modems. Each X-Band AG requires one TSS terminal side port and one RSS terminal side port; each X/Ka AG requires two TSS terminal side ports and two RSS terminal side ports; and each X/Ka/Ka AG requires three TSS terminal side ports and three RSS terminal side ports.
This consists of two segments: the Receive Switching System (RSS) Rack 41, and the Transmit Switching System (TSS) Rack 45
L-Band Switching Subsystem (LSS) Rack 41, 45
This controls all TSS/RSS connections, to connect or disconnect
signal paths, set attenuation values, provide system status, or conduct
various BIT tests, and provides TCP/IP communications for operations tasking commands and messages.
Controller
*** The
Controller includes a front panel display and keypad for manual data entry, setup, and control. A
two-line display provides status in both Local and Remote modes.
pg 46 MET
The LSS is a modular system which uses one layer of switching and power division (or combining) to provide it’s functionality. It is available in configurations as small as 12 antennas connections by 48 modem connections (__x__) to as large as (__x__)
12x48
24x192
The ___ performs the uplink (transmit) function of the LSS. L-Band uplink signal inputs from up to 48 modems (in 12x48 configuration) enter the __ Rack at the Modem Interface Panel A21, located at the bottom of the rack.
TSS
In the 12x48 ___ Signal Flow, up to 12 terminal inputs are received from the Down Link Line Amplifiers Assemblies (DLAAs) at the A20 Top Panel Interface on Unit 41.
RSS
The X-Band TX path utilizes ___.
SSPAs
Solid State Power Amplifiers
Each SSPA contains __ power supply chassis.
two
Most sites only have __ active SSPA chassis populated with __ modules
one
eight
The X-Band transmit IF signal is routed from the ___ in the ___ through the IFL trench to the ___ assembly.
ULAA
EEB
Pedestal
X-Band Block Upconverter (BUC) ___ (1A30A12) contains two X-Band BUCs
Assembly
This splits the on-line X-Band RF signal into two equal signals.
Divider / Phase Shifter Interface Panel
** The phase shifters allow for phase alignment of the outputs of the two SSPA chassis so they can be combined in the 16-module configuration. In the 8-module configuration
where only one SSPA chassis is active, the phase shifter settings have no operational impact. This ensures that the two on-line signals will be in phase after amplification by the SSPAs.
pg 52 MET
The output of each SSPA is routed to the ___ ___ ___ (1A30A17A1) in the AG rack where the two outputs are combined into a single composite X-Band transmit RF signal.
RF Waveguide Combiner
pg 53-54 MET
This routes the X-Band transmit RF
Signal to the Antenna Feed Horn
The Feed Interface Plate (4A8)
The Feed Interface Plate contains Waveguide Switch (4A8S1) necessary to select thedesired transmit polarization port within the Antenna Feed Horn. The Antenna Feed Horn contains two X-Band transmit ports, one for RHCP and one for LHCP.
pg 54 MET
The Antenna ___ captures satellite downlink RF signals and concentrates them using the Subreflector to focus the RF signal
into the Antenna Feed Horn
reflector
pg 54 MET
The Antenna Feed Horn interfaces with the __ __ at the Feed Interface Plate
Hub Assembly
The X-Band RFAA (4A8A1) contains two ___.
LNAs
The X-Band ___ utilizes a combination RF/Waveguide Switch (4A8A1S1) for selection of
the on-line X-Band LNA
Radio Frequency Amplifier Assembly (RFAA)
pg 54 MET
X-Band Block Downconverter (BDC) Assembly (4A18) contains
two X-Band ___.
BDCs
One X-Band BDC down converts the X-Band receive RF signal from the X-Band RFAA to an L-Band IF signal. This X-Band BDC is the ___ X-Band BDC. The second X-Band BDC is an ___ spare used for offline testing by the PMTS
on-line
offline
This is used to provide full loop testing of X-Band equipment
X-Band TLT Plate Assy (4A19)
This translates X-Band transmit frequencies (7900 – 8400 MHz) to X-Band receive frequencies (7250 – 7750 MHz).
The X-Band Translator
This is the official chronological record of all
transmission and payload control actions, equipment configuration changes, operational reports, personnel actions and site status changes at the facility. WSOCs will use the automated MSL program to record all significant activities.
MSL
Master Station Log
MSL is classified as ___.
SECRET
It is important to remember that only information that is REL AUS (releasable to australians) can be stored in MSL due to…?
foreign partners presence at WOC or STEP sites
*** If needed, use SIPR for making a manual log entry with NOFORM or TOP SECRET data.
What kinds of information must be entered into MSL?
- Assumption of duty
- Directives given to other facilities and agencies
- Directives received from WBWO or the Wideband Consolidated-SATCOM System Expert (C-SSE)
- Control subsystem status and issues (e.g., failure, degradation, upgrade, install)
- Collocated enterprise terminal failure or degradation
- Transfer of control responsibility to another facility
- Enterprise and Mobile terminal authorized and emergency outages
- Changes in facility status (e.g., Force Protection Condition (FPCON), Information Condition (INFOCON), Systems Capability SYSCAP, or Operations Capability (OPSCAP)
- Relinquishing of duties
- Equipment alarms and failures
- Equipment configuration changes
- Carrier accesses and de-accesses
- Carrier power adjustments
- Terminal Reason For Outage (RFO) information
- Terminal configuration changes
- Initials from external agencies and/or any controller performing verification. Verify critical events such as payload commanding (e.g., gain state, antenna pattern, and connectivity
changes) - Operational Database (ODB) downloads, and equipment changes EMI activities and actions
- Satellite commanding and payload changes
- Satellite anomalies
- Severe weather conditions affecting transmissions and payload control
- Requests for technical assistance
- Close and open logs at RADAY
Log entries in MSL should cover…?
the Who, What, When, Where, Why, and How of an
event.
What does the following MSL acronym mean?
AX
Access
What does the following MSL acronym mean?
CLR
Clear weather
What does the following MSL acronym mean?
CXR
Carrier
What does the following MSL acronym mean?
DEAX
Deaccess
What does the following MSL acronym mean?
MSN
Mission
What does the following MSL acronym mean?
TML
Terminal
In MSL, this function allows a user to create a new MSL entry using a template from a previous one.
Templates
*** This can save time for entry formats that are frequently used.
For WSOC activities, the RADAY (radio day) starts at the beginning of the ___ day.
Zulu (i.e., 0000Z)
The RADAY function is used to close out an MSL and begin a new one.
What happens if RADAY is selected prior to 23:59Z?
Users will not be able to edit entries for the current day
Once the administrator closes out a RADAY, the RADAY, New MSL, Edit MSL, Quicklook and Template buttons will…?
no longer be available for that RADAY
What is the difference between the “find” and “browse” function on MSL?
Find - The Find button on the MSL Main Menu enables a user to conduct a search through the MSL database to
locate an entry to update.
Browse - The Browse button on the MSL Main Menu allows a user to conduct a search through the MSL database
to locate an entry to review.
What does GTC3S stand for?
Global Terrestrial Critical Control Circuit System Technical Manual
This is used as an email server for secure message traffic over the WSOMSnet. Its primary function is to provide email communications for the enterprise SATCOM community around the world.
GTC3S System
*** As a TC, this system is one of the ways that we support positive control and the ability to change terminal configuration parameters and link power. It is also an approved means for WSOC personnel and strategic terminals to submit reports (24-hour reports)
GTC3S consists of how many servers?
4
One server is used as the Exchange Server (mail server), and one server is used
for the Text Email Translator (TET). The remaining two servers are in-line redundant servers.
What rack is the GTC3S located in?
The DOSS server rack and network rack
The following describes which of the servers used by GTC3S?
- The hub of the system, providing the proper routing of messages and serving as the
repository for archived message traffic. - The primary interface with the WSOMS workstations and is used to send and
receive email messages between nodes. - Message traffic received from non-Internet Protocol (IP) users is routed through the
TET, then to the Exchange Server for routing to the proper addressee.
Exchange Server
The following describes which of the servers used by GTC3S?
- Used to convert text messages in serial One-To-Many (OTM) format to email format
and transmit the same. - Takes an email message and converts it to a serial OTM text message.
- Peripheral Component Interconnect (PCI) Serial Card installed in the ___ Server
PCI chassis provides the interface to the 32-port interface panel. - In the event of a __ server failure, there is no automatic failover capability. Cables from the faulted server must be manually swapped to the replacement server.
Tet Server
This permits communication with remote users (RU) and is housed in the DOSS server rack. It communicates with a PCI serial card that is installed in the TET server. The PCI serial card and the 32 port interface panel are required for the interface to function.
J2-Port Interface Panel
The GTC3S servers are physically located at the __ __ and they can communicate with each other directly through the Exchange Servers.
five WSOCs
RUs (remote users) interface to the WSOCs via the ___.
RPTF
When mail traffic is being sent to the RUs, it is routed from the __ server to the __ for translation and then sent to the proper RU.
exchange
TET
Operators interface with GTC3S through the email application (___) present on
the WSOMS workstation. GTC3S servers will interoperate with any text messaging
software that complies with the serial OTM text message format.
outlook
All messages will end with what when using GTC3S?
three periods followed by the operators CHOPS (Common Handle of Person Speaking)
This subsystem of the AN/GSC-52B satellite communications terminal provides the capability for an operator to control the terminal and monitor its performance.
Control, Monitor and Alarm (CMA)
What is the MMTS?
MET Master Terminal Server
This contains the core Control Monitor Alarm (CMA) software, authenticates users, and coordinates status and control information for all devices in the SCT (Satellite Communications Terminal).
The MMTS is connected to the ethernet LAN which provides connections to: all OCs, all AGs, PMTS, FTSS, LSS (if installed.)
CMA vs MCE?
MCE (MET Computing Environment) - This subsystem consists of a network of PC workstations and servers which hosts the software providing the terminal control and monitoring capabilities.
CMA (Control, Monitor and Alarm) - Subsystem of the AN/GSC-52B satellite communications terminal provides
the capability for an operator to control the terminal and monitor its performance. It also
provides control and monitoring from an External Management Element (EME) via Simple Network Management Protocol (SNMP).
What does the AGTS do?
Each AG has one Antenna Group Terminal Server (AGTS). The AGTS coordinates the status and control information for all devices in the AG, and transmits that information to the MMTS to be displayed on the CMA.
*** The MMTS takes the information that the AGTS provides and passes that to the MCE, PMTS, FTSS, SCCS, LBCD, LSS, FOICF, ULAAs, DLAAs.
What do the different color conventions on the MET CMA mean in regards to the equipment?
- Green: Ok/Online equipment carrying satellite communications traffic or performing ancillary
functions that is operational. - Blue: Standby equipment available to carry satellite communications traffic or perform ancillary
functions that is operational but not online. - Yellow: Equipment unavailable for traffic or to perform ancillary functions (due to manually
initiated repair or maintenance). - Red: Equipment malfunction, not operational.
- Gray: Equipment not Installed/No Data or Status cannot be determined.
What is the PMTS?
The Performance Monitor and Test System (PMTS) uses a combination of test and signal
routing equipment to provide the ability to monitor and test RF signal and equipment
performance. Testing is initiated either automatically, on a predetermined schedule, or manually
by the operator making a selection at the CMA. A selected RF signal is injected into the system
and routed through a variety of signal routing equipment and received at one of two Spectrum
Analyzers and Power Sensors. The Spectrum Analyzers and Power Sensors monitor and test
signal strength and ensure SCT RF equipment is operating within set parameters. Two Signal Generators are used to inject a signal to assist in testing RF equipment operation. Results are displayed on the CMA screen at the OC, where adjustments can be made affecting system operation.
What is the ATF?
Automated Test Function
allows the operator to perform tests on offline equipment strings
and components. ATF functions are initiated by the operator at the CMA. The ATF makes
measurements by first taking a baseline reading of a signal entering a component or equipment
string, and then comparing the baseline measurement to the actual output of the component or
string. Operators must manually route signals to the proper test points thru the CMA and
manually connect a Power Sensor to those test points. ATF results are presented in graphical
format and can be saved to an external file for later reference. Tests performed by the ATF are
listed below:
- Gain Stability
- Insertion Loss
- Amplitude Response
- Gain Transfer
- Two-Tone Intermodulation Distortion
Each AG (Antenna Group) has one __ __ __ __. The ___ coordinates the status and control information for all devices in the AG and transmits that information to the MMTS to be displayed on the ___.
Antenna Group Terminal Server
CMA
Why is it important to restart the AGTS or MMTS?
Allows the operator to clear potential logical issues
What will happen if the wrong AGTS/MMTS is restarted?
There is a potential loss of tracking if antenna is not in standby before AGTS is rebooted.
What is PMF?
Performance Monitoring Function
is a series of tests performed on a continuous schedule to monitor individual carrier signals and composite power levels. PMF tests are performed automatically by the CMA and are displayed on the CMA screen. PMF tests require no operator intervention, but they can be run on demand if required. Individual PMF tests are listed below:
- Composite Power Levels
- Individual Carrier Feed Power Level
- Individual Carrier to Noise Ratio at L-Band Converter Output
- Individual Carrier Transmit Gain IF Input to RF Output
- Individual Carrier Receive Gain RF Output to IF Input
If the automated PMF is not disabled before the On-Demand tests are run, what will happen?
they will be added to the end of the Job Queue and will not be performed until the
automated system gets to them.
What is the RPSTL?
The Repair Parts and Special Tools List (RPSTL) lists and authorizes spares and repair parts; special test, measurement, and diagnostic equipment (TMDE); and other special support equipment required for performance of unit maintenance, direct support maintenance, and general support maintenance of the Sample Data Set (SDS). The Repair Parts and Special Tools List is divided into the Repair Parts List, the Special Tools
List and Cross-Reference Indexes.
*** All parts that need to be requested will be adding to the shopping cart in RPSTL and then placed onto a 5988-E form.
What is the difference between the Repair Parts List, Special Tools List and Cross-Reference Indexes?
Repair Parts List: A list of spares and repair parts authorized by this RPSTL for use in the performance of maintenance. The list also included parts which must be removed for
replacement of the authorized parts.
Special Tools List: A list of special tools, special TMDE and other special support equipment
authorized by this RPSTL (as indicated by Basis of Issue (BOI) information in DESCRIPTION
AND USABLE ON CODE boxes) for the performance of maintenance.
Cross-Reference Indexes: A list, in National Item Identification Number (NIIN) sequence, of all
national stock numbered items appearing in the listing, followed by a list in alphanumeric
sequence of all part numbers appearing in the listings.
What RRFIS rack is the following of and what do each of the numbers in the given picture represent?
Rack 901(front)
- Fan (not shown)
- Switch Assembly #4
- Combiner/Divider Modules
- Switch Assembly #3
- Equalizer Modules
- Diagnostic Switch Assembly
- Subsystem Modules
- Downlink Subsystem Input/Output (I/O) (not shown in base)
What RRFIS rack is the following of and what do each of the numbers in the given picture represent?
Rack 901 (rear)
- Terminal Modules (IF, L or X-Band)
- Logic Distribution Panel
- Equalizer Control Busbar #2
- Equalizer Control #1
- Subsystem Modules
- Terminal/Control I/O Panel Long Left/Right (in base - not shown)
- Terminal/Control I/O Panel Short Left/Right (in base - not shown)
- Terminal Module Power Distribution Panel (on side - not shown)
- Equalizer Module Power Distribution Panel (on side - not shown)
What does the “FREQ” button on the spectrum analyzer do?
This is used to specify the frequency axis of the window.
What does the “SPAN” button on the spectrum analyzer do?
The SPAN key allows adjustments to
the frequency span. The frequency
span is the perceived spectrum on the
display screen.
In this picture the span is set to 3 GHz.
This means from the left to right limits
of the grid display is 3GHz.
Another way to look at it, Span is like
zooming in and out of the spectrum.
The higher your span the harder it is to
see small changes.
What does the BW button do on the spectrum analyzer?
The BW key calls a menu for setting
the resolution bandwidth (RBW), video
bandwidth (VBW)
What does the “sweep” button do on the spectrum analyzer?
Sweep is a measurement that
indicates how many scans of
the displayed spectrum are
happening within a time frame.
In this video the sweep time is
every 300 milliseconds.
*** How many scans of the displayed spectrum are happening within a time frame. WRMS calls this dwell time.
What does the “AMPT” button on the spectrum analyzer do?
The AMPT key is used to set the reference level, the maximum
level and the display range of the active window as well as the input impedance and the input attenuation of the RF input.
*** This allows you to adjust up and down on the noise floor to see amplitude. It is measured in dBm and is normally around -90 dBm.
What does the “MKR” button do on the spectrum analyzer?
The markers are used for marking points on traces, reading out
measurement
results and for quickly selecting a display section.
The first marker should be set to the center frequency. The delta marker will measure the distance from the first marker.
Given the follow picture name the equipment that matches the corresponding numbers.
RRFIS Rack 903 Control
- Rack Fan Assembly
- GPIB-ENET Converter
- Sweep Generator
- Spectrum Analyzer
- Power Meter
- Power Meter Sensors & Directional Couplers
- PC Speakers
- Attenuator Control Units (Primary and Secondary)
- PC Controller
- KVM & LCD screen
- Remote Laptop
- Printer
- Power Supply 1, 2 and 3
Given the following picture, describe what the given numbers and names allow you to do with the Oscilloscope.
2 Soft keys Function of keys changes based upon menus shown on the display.
3 [Intensity] key Press the key to illuminate it, then use Entry knob to adjust the intensity of a
waveform.
4 Entry knob Used to select items from menus and to change values.
5 Tools Keys Contains the [Utility], [Quick Action], [Analyze], and [Wave Gen] keys.
6 Trigger Controls Determines how the Oscilloscope triggers to capture data.
7 Horizontal
Controls
Controls the horizontal scale and position of the waveforms
8 Run Control keys Starts and Stops the data acquisition and allows for single scan of waveforms.
9 [Auto Scale] key Automatically scales active waveforms for best display on screen.
10 Waveform
Controls
Contains additional keys to perform various functions and utilities on active
waveforms.
11 Measure Controls Provides a means for measuring active or single scan waveforms.
12 Waveform Keys Allows you to change display settings of the waveforms.
13 Vertical Controls Controls the vertical scale and position of active waveforms.
14 Analog Ch inputs Allows for up to 4 input signals to be viewed and measured utilizing either BNC
cables or the included probes.
The follow picture of the Monitor Panel on the RPTF, what are the numbered connectors?
- DB-25
- Patch cord connector
3-11. BNC connectors (for TX/RX for timing/data)
This piece of equipment tests signal quality and verifies operation by generating a test signal that can be modulated before transmission and reconstructed after reception to determine the signal quality and verify operation.
It is designed to tested communications and weapons systems.
Signal Generator
*** fun factor, this will survive and operate in an uncontrolled temperature environment
*** the given picture is of model SG-1366/U
Given the following picture, describe what each number’s function is? SIGEN
- USB Used to connect a USB Flash Drive(UFD) for data transfer.
2 Display The LCD screen
3 Soft Keys A softkey activates the function indicated by the displayed label
4 Numeric Keypad 0 through 9 keys, a decimal point key, a minus sign key, and a backspace key.
5 Local Cancel / (Esc) Deactivates remote operation and returns the signal generator to Front Panel
6 Arrows and Select Select and arrow keys enable the selection of items on the display for editing.
7 Page Up In a table editor, use this key to display a previous page
8 Menus These keys open softkey menus that enable the configuration of signal generator
functions or access information.
9 Trigger Used to connect a USB Flash Drive(UFD) for data transfer.
10 Preset This key sets the signal generator to a known factory state.
11 User Preset This key sets the signal generator to a known user-defined state.
12 RF On/Off Toggles the operating state of the RF signal present at the RF Output connector.
13 Grounding Points Easily accessible ground contacts
14 RF Output RF connector output
15 Mod On/Off enables or disables the modulation of the output carrier signal by an active modulation
format.
16 Help Display a description of any key.
17 Page Down In a table editor, use this hard key to display the next page.
18 Rotary Knob Increases or decreases a numeric value, or moves the highlight to the next digit,
character, or item in a list.
19 Incr Set Sets the increment value of the currently active function.
20 Return Retraces key presses. In a menu with more than one level, returns to the prior menu page.
21 More When a menu contains more softkey labels than can be displayed, used to display the
next group of labels.
22 Power Switch selects the standby mode or the power on mode.
Given the following picture, what functions do the following numbers display? SIGEN
1 Active Function
Area
Displays the currently active function.
2 Frequency Area Displays the current frequency setting.
3 Annunciators show the status of some of the signal generator functions
and indicate error conditions.
4 Amplitude Area Displays the current output power level setting (If the RF
Output is off, this area is grayed out).
5 Softkey Label
Area
displays labels for the function of the softkeys located
immediately to the right of the display.
6 Scroll Bar Use the Page Up and Page Down keys to scroll through
the text.
7 Text Area Displays signal generator status information, such as the
modulation status, and other information such as sweep
lists and file catalogs.
8 Error Message
Area
displays abbreviated error messages
This is used for capturing, displaying, analyzing and characterizing RF power in both the time and statistical domains.
Power Meters
*** measures RF power
Given the following picture, what are the functions of the displayed numbers? Power Meter
- Allows you to present the power meter, if you are currently work in local mode.
- (up and down arrows) Allows you to select the upper and lower measurement window on the power meter’s display. (bottom button for #2) Allow you to choose either a one or a two-window display.
- This key switches the power meter between on and standby.
- Allows access to softkey menus which affect the general power meter system setup and the setup of the channel inputs.
- Allows you to save and recall setups which you use frequently.
- These keys allow access to softkey menus which affect the setup of the measurement windows.
- These keys allow access to softkey menus which affect the measurement channel.
- Two front panel sensor inputs
- The power reference output. Used for calibrating the sensor and meter combination.
- Allows you to move the position of the cursor, select fields for editing
- These keys allow you to move through all the pages of a menu
- These four keys are used to select from the menus.
Given the following picture, what do the numbers on this front panel display mean? Power Meter
- The status reporting line
- Displays the channel setup being measured
- Measurement data is displayed as either one or two rectangular windows depending on the setting
- The measurement result field
- Displays the unit of measurement either dBm, dB, Watts or %
- Shows an analog meter which displays the measurement result and the meter scaling
- Displays the number of pages in the current softkey menu
- Any softkeys available are displayed in these four fields
- Displays the title of the menu
- This field indicates if the measurement result is out of
the upper or lower limits set - This field displays “rel” if relative mode is on
- This field displays “ofs” if an offset is set
- This field displays “rng hld” if a range is selected
- This field displays “dty cyc” if a duty cycle is set
15.The information in this field is displayed on two lines and depends on the combination of sensor type, sensor calibration table and frequency
dependent offset table currently selected.
Given the follow picture, what do the numbers correspond to?
- Display - Large 50,000 count, ¼ VGA display with white
backlight. Multiple sets of measurement information can be displayed at the same time. - Softkeys/Buttons -
The 14 softkeys/buttons on the front of the multimeter
activate features that augment the rotary switch selected functions, navigate menus, or control power to multimeter. - Rotary Switch -
Used to select a primary measurement function by
positioning the rotary switch to one of the icons around
its perimeter. - Terminals - All functions, except current, use the temp, diode, capacitance, volt, ohm and COM input terminals.
Given the following picture, from top to bottom, name what the picture shows.
- Temperature Probe - measures temperature. Uses a special adapter.
- High Voltage Probe - designed to extend the voltage measuring capability to 6,000 volts peak AC or DC overvoltage category I.
- USB Interface Cable w/CD - used to connect the multimeter to a computer. CD contains the drivers needed to make the connection.
Given the following picture, from top to bottom, name what the picture shows.
- Cable Assembly, RF - This is a male BNC to BNC cable used to connect the multimeter inputs to various pieces of equipment to measure wave signals such as sine waves and square waves.
- Standard Test Lead Set - used with the multimeter to take most measurements.
- Hook Probe Test Leads - set of test leads (red/black) with built in medium sized hook probes.
- Test Lead Set - right angle test leads (red/black) with no probes.
Given the following picture, from top to bottom, name what the picture shows.
- Hook Clip Set - Attaches to the end of any test lead set. Normally used to hook to a component when taking a measurement.
- Large Alligator Clip Set - set of two clips (red/black). Attaches to any test lead set. Used to attach to components when taking higher voltage measurements.
- EX Large Alligator Clip Set - Attaches to multimeter probe tips and are used to attach to components when taking higher voltage measurements.
- Fine Tip Attachment Set - attaches to the end of the standard probe set. Allows the user to access hard to reach components and allows for precision probe placement.
Given the following picture, from top to bottom, name what the picture shows.
- Adapter, Dual Banana Plug to F/BNC - connects into multimeter terminals. Once connected, a BNC cable can be connected to the adapter to allow signal measurement.
- Temperature Probe Adapter - used with the temperature probe
- Probe Covers - This caps effectively reduce the amount of exposed metal at the probe tip
The attached picture shows what?
The set up for monitor mode.
A RS-232 cord will connect to the DB-25 port on the patch panel to the TMDE device. A patch cord will go into the “MON” port below the DB-25 port and the other side will go into the desired circuit you want to test in the monitor (MON) section.
The attached picture shows what?
The set up for patch mode.
This is used for patching around a failed encryption device.
When patching for a failed encryption device, it is important to remember that…?
the patching for each patch panel will be mirrored red to black
The following pictures shows what?
Circuit Integrity Test
A RS-232 cord will connect to the DB-25 port on the patch panel to the TMDE device. A patch cord will go into the “MON” port and the other side will go into the desired circuit you want to test within the MODEM section.
The following pictures shows what?
How to hook up the oscilloscope to the patching panel on the RPTF rack for monitoring.
Step 1. On one end, the patch cord connects to the MON port (below DB-25) and on the other end connects to the desired circuit (left to right) within the MON section.
Step 2. Connect the RS-232 cord from the patch panel to the DB-25 port on the monitor panel
Step 3. Connect the BNC connectors via a cord on the oscilloscope to the BNC ports on the monitor panel.
The following pictures shows what?
How to hook up the oscilloscope to the Breakout Patch Panel on the RPTF rack
Step 1. On one end, the patch cord connects to the MON port (below DB-25) and on the other end connects to the desired circuit (left to right) within the MON section.
Step 2. Connect the RS-232 cord from the patch panel to the DTE port on the Breakout Patch Panel
Step 3.
What is the signal flow for a local loopback test on the CSU/DSU?
- T-BERD
- Red P/P
- KIV-7M
- Black P/P
- CSU/DSU
- CSU/DSU T1 Internal Loop
What is the signal flow for a remote loopback test on the CSU/DSU?
- T-BERD
- Red P/P
- KIV-7M
- Black P/P
- CSU/DSU
- MSPP
- Goes through fiber optic cable to distant end
- MSPP
- CSU/DSU
The following picture is a loopback of what?
GTC3S/RT
This is an end to end test which is also known as “red to red test”
The most common approach used to efficiently isolate the cause of circuit degradation is by testing…?
the path in small steps
Given the following picture, what do the numbers correspond to on this rack?
RRFIS Rack 903 - Control Group BACK SIDE
- Ethernet Switch
- A/B Switch
- Primary Control I/O Panel (in base - not shown)
- Second Control I/O Panel (in base - not shown)
- F/O Gigabit Media Converter (on side - not shown)
- Serial Port Interface Hub (on side - not shown)
Given the following picture, explain what the numbers relate to.
RRFIS Rack 904 Timing
- 1 PPS Distribution Amplifiers (DA) - Comprised of 11 connector ports with associated switches and grounding connections. Ports are displayed horizontally.
- 1/5 MHz DA (provides 1 MHz) - Comprised of 11 ports with associated switches and grounding connections. Ports are displayed horizontally.
- 1/5 MHz DA (provides 5 MHz) - Comprised of 11 ports with associated switches and grounding connections. Ports are displayed horizontally.
- Signal Switch Assembly
- Cesium Standard
- 1 PPS Patch Panel
- Wideband Frequency Distribution Amplifier (FDA)
- Disciplined Frequency Standard
- Serial Device Server & Discrete I/O (in media drawer)
- Discrete Interface Unit (DIU)
- 15 VDC Power Supply
- Standby Power Supply
Given the following picture, explain what the numbers relate to.
RRFIS Rack 905 FO (front side)
- Uplink FO Chassis 1
- Uplink FO Chassis 2
- Downlink FO Chassis 1
- Downlink FO Chassis 2
- Circuit Marker Panels
- Storage Tray
Given the following picture, explain what the numbers relate to.
RRFIS Rack 905 FO (back side)
- Uplink FO Patch Panel (behind a cover)
- Downlink FO Patch Panel (behind a cover)
- PWR/DATA I/O Panel
- FO RF I/O Panel
- Power Strips
