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Volume 2
F-15 and F-16 Test Equipment
240
Other
Professional
08/16/2011
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Term
What assemblies make up the ESTS power supply system?
 Definition
AC power supply assembly (A3A3), DC power supply assembly (A4A3), and the high voltage DC power supply module (DCPS6).
Term
Which major assembly(s) does the AC power equipment assembly (A3) contain?
 Definition
AC power supply assembly (A3A3).
Term
What is the maximum current of the AC power supply asembly (A3A3)?
 Definition
7.0 amps.
Term
Waht doe the DC power supply assembly (A4A3) and the high voltage DC power supply module provide?
 Definition
Programmable DC power for the LRUs.
Term
What is the maximum power of the DCPS6?
 Definition
200 watts.
Term
What is the maximum ouput ripple of the DC power supply modules (A4A3A2 through A4A3A6)?
 Definition
89 mvolts P-P.
Term
The RF VXI assembly contains the VXI bus extender module (A5A1) and what other instrument modules?
 Definition
(1) RF generator No.2, (2) power meter, (3) RF counter reference, (4) rubidium reference.
Term
In what range does the RF VXI A5 generate RF stimulus signals?
 Definition
0.01 and 18 GHz.
Term
What is the programming resolution of the RF generator No.2?
 Definition
1 Hz.
Term
What is the frequency range of the power meter (A5A8)?
 Definition
10 MHz to 18 GHz.
Term
What is the pulse period range of the RF counter (A5A9)?
 Definition
250 nsec to 1 sec.
Term
In the RF VXI A5, what slot(s) does the rubidium reference (A5A12) mount in?
 Definition
Slots 12 and 13.
Term
What slot(s) does the digital to analog converter mount in withing the STIM/RESP VXI assembly No.1 (A6)?
 Definition
Slot 2.
Term
What is the maximum output current of the DAC?
 Definition
410 milliamps.
Term
Switch modules No.1 and No.2 (A6A3 and A6A4) route signals through various paths which include how many dedicated coaxial instrument ports?
 Definition
6
Term
The S/MUX (A6A5) can service up to 16 instruments and how many UUT signal pairs?
 Definition
96
Term
What is the frequency range of the SRP (A6A6)?
 Definition
360 Hz to 5 Khz
Term
What is the maximum VDC of the Form C Relays (A6A7)?
 Definition
48 VDC
Term
What is the VDC measurement accuracy of the DMM (A6A8)?
 Definition
100 mv to 200 volts.
Term
Each arbitrary function generator (No.1 and No.2) consists of what three circuit boards?
 Definition
(1) VXI interface board, (2) arbitrary main board, (3) arbitrary engine board.
Term
What functions do the AFG No.1 and No.2 modules provide?
 Definition
(1) arbitrary, (2) sine, (3)square, (4) triangle, (5) pulsed DC.
Term
The coutner-timer instrument and the waveform digitizer instrument of the CDM (AGA11) provides how many input channel(s)?
 Definition
2 each.
Term
To what is the operation of the VXI bus extender module (A7A1) identical?
 Definition
The A5A1 and A6A1 VXI bus extender modules.
Term
What two buses does the H009 interface module (A7A4) provide?
 Definition
Clock and data.
Term
The BISM (A7A5) contains two communication channels. What kind are the communication channels?
 Definition
MIL-STD-1553B.
Term
List the AVS (A7A6) functional groups.
 Definition
(1) FG1-VXI interface.
(2) FG2-frequency synthesizer.
(3) FG3-composite video and raster generator.
(4) FG4-stroke generator.
(5) FG5-sync processor.
(6) FG6-image acquisition unit.
(7) FG7-input/output buffer.
Term
DWG No.1, No.2, and No.3 provide how many high-speed I/O pins?
 Definition
96
Term
DWG No.4 and No.5 provide 256 TTL I/O pins. What type are the 256 pins?
 Definition
High-density.
Term
How is the 115 VAC connected to the ESTS?
 Definition
Directly connected.
Term
What type of input power filtering does the PCU provide?
 Definition
EMI filtering.
Term
Which PCU 60 amp circuit breaker controls power to the ESTS assemblies?
 Definition
MAIN POWER ON/OFF circuit breaker.
Term
Which A10 interconnect assembly connector connects to RF EQUIP A2 connector A2J2 and provides IEEE-488 bus, RF, and power distribution interconnections?
 Definition
P4 connector.
Term
Which ALL interconnect assembly connector connects to RF EQUIP A2 connector A2J1 and provides IEEE-488 bus and power distribution interconnections?
 Definition
P3 connector.
Term
Which A12 interconnect assembly connector connects to System Control a9 IEEE-488 (DST) connector and provides IEEE-488 bus interconnections?
 Definition
J1 connector.
Term
The interconnecting box A15 (maintenance ITA) provides the interface required for what ESTS function(s)?
 Definition
Selft-test and calibration.
Term
How many pin connectors are the two rear panel connectors (P1 and P2) on the maintenance ITA?
 Definition
800 pin.
Term
Which maintenance ITA connector connects to PATEC adapter cable when using PATEC equipment as a calibration standard?
 Definition
J4 connector.
Term
Which maintenance ITA connector connects to ESTS STIM/RESP VXI No.2 A7 connectors A7J1 and A7J2?
 Definition
P2A/B connector.
Term
Through what does the system controller control all ESTS operations?
 Definition
IEEE-488 and MXI buses.
Term
What makes up the operator interface?
 Definition
(1) Flat panel display.
(2) Video graphics card.
(3) Integral resistive technology touchscreen.
(4) 101-key keyboard.
Term
Regarding program/data storage, the RAM is expandable to how many Mb?
 Definition
128 Mb.
Term
What is used to transfer classified software and/or data to/from the ESTS?
 Definition
3.5-inch floppy disk.
Term
What device controls the 1.44 Mb floppy drive?
 Definition
Floppy controller.
Term
What does the system interfacing PAR connector provide?
 Definition
Provides a parallel interface to an external printer.
Term
What system interfacing connector provides a serial interface port to/from the system controller (A9)?
 Definition
SER 1.
Term
What system controller left side I/O panel connector provides an MXI bus interface between the system controller and the ESTS instruments?
 Definition
MXI bus connector.
Term
What system controller left side I/O panel connector provides an SCSI bus interface between the system controller and the CD-ROM?
 Definition
SCSI bus connector.
Term
On the system controller right side I/O panel, when is the 3.5-inch disk drives indicator light visible?
 Definition
Indicator light is only visible when the disk drive access door is open.
Term
On the front panel indicators, when is the DC indicator light illuminated?
 Definition
It is not used.
Term
On the system controller keyboard, how many functions keys are there?
 Definition
10.
Term
On the system controller keyboard, when is the green Caps Lock indicator on?
 Definition
When the Caps Lock key is pressed.
Term
On the system controller keyboard, which keys are operation keys?
 Definition
(1) Backspace.
(2) Enter.
(3) Shift.
(4) Caps Lock.
(5) Space-bar
(6) Ta.
(7) CTRL.
(8) Alt.
Term
On the CD-ROM, what increments the CD track selection?
 Definition
Pressing the forward track button.
Term
What selection choics are there on the ESTS main menu?
 Definition
(1) TPS.
(2) TPS (debug mode).
(3) Maintenance support.
(4) Resource management.
(5) Systems services.
(6) Shutdown.
Term
What box on the F15 TPS selection menu when touched allows the operator to scroll the list until the desired TPS appears?
 Definition
NEXT.
Term
Using the F15 TPS selection menu TPS list number option to select a TPS, what box do you touch if you are sure of the TPS selection number?
 Definition
EXECUTE.
Term
How many characters are required to be input in order to use the F15 TPS selection menu LRU work unit code option when selecting the required TPS?
 Definition
5.
Term
After selecting a TPS, the TPS main menu comes up on the screen. List the TPS main menu options?
 Definition
(1) END-TO-END TESTING.
(2) INDIVIDUAL TESTING.
(3) LOAD OFP.
(4) READ/VERIFY OFP.
Term
In what two ways may debug mode commands be entered?
 Definition
Enter either the first character of each word of the command or enter the entire command.
Term
What does the operator need to be completely familiar with prior to using the debug mode?
 Definition
The TPS source code and the operations it performs.
Term
What does the option system services allow the operator to do on the TPS main menu?
 Definition
Copy, print, display calibration data, and access the NUIX operating system shell.
Term
What is the operator asked after selecting the shutdown option from the ESTS main menu?
 Definition
"Do you really want to shutdown?"
Term
What is displayed on the screen after system shutdown?
 Definition
ESTS ssytem shutdown message.
Term
What is the input signal range that the signal analyzer can receive from a line replaceable unit?
 Definition
10 MHz to 18 GHz.
Term
Which signal analyzer control/indicator indicates if the internal signal analyzer temperature exceeds 75 degrees Celsius?
 Definition
VOLT/TEMP indicator.
Term
What does the STATUS ACT indicator light indicate when it is ON?
 Definition
This indicator light is ON when the SA is making a measurement, receiving programming information, or sending measurement data.
Term
What connector is not used during normal operation?
 Definition
CALIBRATION 300 MHz-10dBm connector.
Term
What does the INSTRUMENT STATE SELF TEST indicator light indicate when it is ON?
 Definition
IT is ON when teh local scillator section is performing a self-test and to show local oscillator section is in a pause state undergoing a diagnostic test.
Term
What is the RFG No.1 output frequency range?
 Definition
100 KHz to 2.56 GHz.
Term
Which INSTRUMENT STATE Key when pressed enables RFG No.1 to display the most recent uncleared error number and a short description of the error?
 Definition
MSG key.
Term
Which INSTRUMENT STATE key when pressed returns the RFG No.1 parameters to a known set of preset conditions?
 Definition
PRESET key.
Term
Which key when pressed toggles the frequency modulation ON and OFF?
 Definition
FM ON/OFF (SENSITIVITY) key.
Term
Which key when pressed enables the operator to set the RFG No.1 output frequency?
 Definition
FREQ (MULTIPLIER) key.
Term
Which indicator indicates that one or more of the RFG No.1 frequency controls circuits is not phase locked?
 Definition
UNLOCK indicator.
Term
What is the input frequency range of the ASA?
 Definition
10 Hz to 18 GHz.
Term
What keys select the basic measurement functions?
 Definition
Function select keys.
Term
Which function select key holds the active function to its present value, blanks the soft keys and active function from the CRT display?
 Definition
HOLD key.
Term
Which INSTRUMENT STATE key copies the display contents onto a plotter or a printer?
 Definition
COPY key.
Term
What does the CAL OUTPUT provide?
 Definition
Provides a 300 MHz, -10dBm frequency output.
Term
When lit, which indicator indicates line input power is applied to the ASA?
 Definition
LINE indicator.
Term
The GPITM is made up of what?
 Definition
The GPIU and the GPIU blower.
Term
The GPIU is made up of what subsystems?
 Definition
(1) Internal bus system
(2) Switching subsystem
(3) Waveform stimulus subsystem
(4) Digital test subsystem
(5) Serial bus subsystem
(6) Test module adapters subsystem
(7) UUT power interface
Term
Which GPIU subsystem distributes power and interface signals to plug-in circuit card assemblies?
 Definition
Internal bus subsystem.
Term
Which GPIU subsystem provides general-purpose switching to set up the UUT interface test adapter and special-purpose switching to distribute hte waveform generator outputs to the test station RF modulation inputs?
 Definition
Switching subsystem.
Term
Which GPIU subsystem can perform measurement multiplexing at each of the digital pins that make up the parallel digital circuits?
 Definition
Digital bus sybsystem.
Term
Which GPIU subsystem regulates the transfer of Manchester data and serial data between the GPITM and the UUT?
 Definition
Serial bus subsystem.
Term
The GPIU blower assembly uses what voltage level(s)?
 Definition
115 VAC, 60 Hz.
Term
List the three major assemblies that make up the GPIU.
 Definition
(1) 1A3A2N2 (tier A)
(2) 1A3A2N1 (tier B)
(3) 1A3A2N3 (tier C)
Term
The three tiers of the GPIU contain a total of how many plug-in circuit card assemblies?
 Definition
37.
Term
Tier A, the middle tier, contains a backplane CCA and how many plug-in CCAs?
 Definition
14.
Term
Of the CCAs in tier A, which one has five of the same CCAs?
 Definition
Precision measurement CCA (1A3A2N2A5 through 1A3A2N2A9).
Term
Tier B, the upper tier contains what?
 Definition
A backplane CCA and 17 plug-in CCAs.
Term
How many arbitrary waveform generator CCAs are there in tier B?
 Definition
4 (1A3A2N1A2 through 1A3A2N1A5)
Term
How many high-speed driver/receiver CCAs are there in tier B?
 Definition
10 (1A3A2N1A9 through 1A3A2N1A18)
Term
Tier C, the lower tier, contains what?
 Definition
A backplane CCA and six plug-in CCAs.
Term
What self-contained programs verify the operation of the GPITM without the use of external resources?
 Definition
Built-in test
Term
How is power-on BIT performed?
 Definition
Automatically when power is applied to the GPITM.
Term
What are the two types of continuous BIT?
 Definition
Continuous monitoring BIT and programmed continuous BIT.
Term
When does the GPITM control program initiate BIT of the GPIU?
 Definition
It indicates a required CCA that must Upon receipt of the CNF or IST command from the test station computer.
Term
On FO-3, what does an X in the column to the right of the CCA indicate?
 Definition
It indicates a required CCA that must be installed and operational for BIT to execute.
Term
The initiated BIT failures that are reported by a string of ASCII status indicators to the station computer monitor are output by what?
 Definition
The TMA CCA.
Term
Does this error message have a fail? If so, which tier and CCA failed? 00----0-0----00----00000--000--0*0----00000--000000000000----.
 Definition
Yes, Tier A, CCA 1A3A2N2A16
Term
Each station RF source provides what?
 Definition
Continuous wave or modulated RF signals between 10 MHz and 40 GHz.
Term
What assembly is the output interface for the test station RF stimuli?
 Definition
Stimulus assembly.
Term
What does the stimulus assembly do?
 Definition
Conditions RF source signals and routes them to the front panel connectors for distribution to the UUT or the test station RF measurement resources.
Term
What does the modulation assembly provide?
 Definition
Provides modulation of the RF carrier, including pulse modulation, phase modulation, and biphase modulation.
Term
What corrects power amplifying variations across the frequency band?
 Definition
An automatic leveling control unit.
Term
What does the stimulus distribution assembly do?
 Definition
Combines RF signals from different sources, provides the required termination for the output signal, and routes the output signal to the stimulus assembly front panel connectors.
Term
What is the input interface for RF signals from the UUT?
 Definition
Measurement assembly.
Term
What are the two clock signals from the crystal clock assembly derived from?
 Definition
A 10 MHz reference signal generated by a crystal oscillator.
Term
What converts IF signals supplied by the test station to lower IF frequencies?
 Definition
Fifth IF CCa.
Term
What function(s) does the timing processor CCA perform?
 Definition
Specialized timing and counting functions necessary to measure electronic warefare type signals generated by the UUT.
Term
What are the four basic measurments that are performed by the timing processor CCA?
 Definition
(1) Pulsed frequency demodulation.
(2) Phase demodulation.
(3) CW frequency.
(4) Pulse delay.
Term
What assembly receives ATE commands from the IEEE-488 bus and routes corresponding control signals to the stimulus assembly and the measurement assembly?
 Definition
Control/power assembly.
Term
What device provides a 16-slot card cage and backplane motherboard for the control/power assembly plug-in CCAs?
 Definition
Card cage assembly.
Term
How many of the 16 slots of the card cage are used?
 Definition
9
Term
What device provides address decoding and buffering, data bus buffering, and interrupt handling capacity for the timing processor CCA?
 Definition
Timing processor control CCa.
Term
What does the RF sync CCA provide?
 Definition
Signal routing of transistor-transistor logic level synchronization signals between the Ritm assemblies and between the Ritm an d the test station instruments used in RF tests.
Term
In addition to distributing the signals necessary for RF testing of the UUT, what else does the stimulus assembly provide?
 Definition
(1) Selection of RF source signals supplied by the host station.
(2) Modulation of the source signal.
(3) Generation of RF noise.
(4) Signal amplification/attenuation.
(5) Automatic leveling control.
(6) Selection and routing of stimulus to the UUT or the measurement device.
Term
What device generates bandwidth-limited RF noise at selected frequencies?
 Definition
Noise assembly.
Term
What device attenuates and/or modulates the RF signal?
 Definition
Modulation assembly.
Term
In addition to amplifying the RF signals supplied by the station RF sources, what else do the power amplifiers amplify?
 Definition
Also used to amplify the output of the noise assembly.
Term
What does the remote detector buffer contain that is used to monitor the ambient temperature of the leveling loop detectors?
 Definition
Temperature compensation circuit.
Term
How many connectors does the stimulus distribution assembly include for distribution of signals to the UUT or to a measurement device?
 Definition
20.
Term
Which front panel stimulus distribution assembly connectors are used to input RF signals from the station RF sources?
 Definition
J1 and J2.
Term
Which assembly inputs RF signals from the UUT?
 Definition
Measurement assembly.
Term
In addition to inputting the RF signals from the UUT, what else does the measurement assembly provide?
 Definition
(1) Switching and routing of the input test signals to the internal circuitry and the external measurement instruments/devices.
(2) Input preamplification and/or attenuation.
(3) Input demodulation and down conversion.
(4) Measurement of frequency, delay, and phase relation for past pulsed and CW signals.
(5) Common time base for the station RF resources through a reference clock signal.
Term
What device supplies a stable time baser signal to the station RF resources?
 Definition
Crystal clock assembly.
Term
What clock channel feeds the crystal oscillator signal to a frequency multiplexer (x10), a band pass filter, and a buffer?
 Definition
100 MHz clock channel
Term
Referring to the demodulator assembly, the demodulation signal is ouput on one of three channels depending on the measurement being excecuted. What are the three channels?
 Definition
Channel A, Channel B, or timing processor CCA.
Term
What assembly consists of a LO selector circuit, a down converter assembly, a dual channel mixer assembly, and a phase CCA?
 Definition
RF assembly.
Term
Referring to the RF assembly, what three types of LO signals can be selected by the LO selector circuit?
 Definition
(1) Variable LO.
(2) Swept LO.
(3) BIT LO.
Term
Which LO signal is the amplified RF source signal supplied by the stimulus assembly?
 Definition
Variable LO.
Term
What assembly converts the high-band RF (18 to 40 GHz RF range) from RF CH A and RF CH B inputs to a lower frequency that can be used directly by the phase CCA?
 Definition
Downconverter assembly.
Term
What assembly converts the low-band RF (2 to 18.5 GHz RF range) from RF CH A and RTF CH B inputs to one of two intermediate frequencies that can be used directly by the phase CCA?
 Definition
Dual channel mixer assembly.
Term
The measurement assemblies timing processor CCA connector J7 is used for what purposes?
 Definition
50-pin input/output connector used only for testing purposes.
Term
What does the control/power assemblies' power circuit supply?
 Definition
Supplies DC power to the control circuit and to the stimulus and measurement assemblies.
Term
Referring to the control/power assembly, what controls and monitors the application of power to the fans in each RITM drawer?
 Definition
Circuit breaker panel.
Term
Which circuit breaker applies 208 VAC to the power indicator DS1 and to the power supplies PS1 and PS3 through PS6?
 Definition
CB1.
Term
Which RITM DC power supply supplies +5 VDC, +12VDC, and -12 VDC to the VME bus backplane in the card cage assembly?
 Definition
PS3.
Term
Which RITM DC power supply supplies +15 VDC to the measurement assembly via connector J114?
 Definition
PS6
Term
How are the VME bus backplane lines grouped?
 Definition
Into four sub buses.
Term
Which VME sub bus groups all lines that are active during data transfers?
 Definition
Data transfer bus.
Term
The CIIL code that is transmitted by the station computer over the IEEE-488 bus is in what form?
 Definition
Discrete signals and seven-bit ASCII characters.
Term
What five CCAs make up the CDU computer?
 Definition
(1) Processor.
(2) SCSI
(3) RS-232 SI
(4) MXI
(5) CTSI
Term
What components does the SCSI CCA interface the processor with?
 Definition
The 4.3-Gb hard drive, CD-ROM drive, and zip drive.
Term
Which CDU CCA can communicate with components having cable lenghts of up to 50 feet?
 Definition
The RS-232 SI.
Term
What does the CTSI CCA use to perform data transfers to and from the test station?
 Definition
The test bus.
Term
What has a transfer rate of 2-4.8 Mb/second?
 Definition
CD-ROM drive.
Term
What contains a 4.3 Gb hard drive?
 Definition
Disc drive carrier assembly.
Term
What has a transfer rate of 500 Kb/second?
 Definition
3.5-inch floppy drive.
Term
What provides 100 Mb of storage?
 Definition
Zip drive.
Term
What utilizes a latch lock mechanism?
 Definition
Disc drive carrier assembly.
Term
What video signals does the video display monitor receive?
 Definition
X-, Y-, and Z-axis drive, and composite video.
Term
What is the maximum resolution of the flat panel display?
 Definition
1280 x 1024
Term
What is the purpose of the HHT?
 Definition
It provides an alternate method of entering GO, NO GO, and CONTINUE responses to queries by software: also provides for entering alphabetical or numerical data during testing.
Term
What's the only value that can be specified for the VOLTAGE modifier in the discrete syntax?
 Definition
28 volts
Term
How many ATLAS sytax statements can be used to control the PSU?
 Definition
Four
Term
Why does the blower and refrigeration units' syntax provide you with the ability to select whether or not to activate the blower and refrigeration units?
 Definition
The blower and refrigeration units aren't used with all UUTs.
Term
Which CCAs provide for dedicated signal connections from the IU backplane to the ITA for signal routing to and from the UUT?
 Definition
Stimulus feedthru (1A1 and 1A2)
Term
How many programmable discrete outputs can each IDO CCA provide to the UUT?
 Definition
60
Term
the purpose of the two self-test MUXs on the IDO CCA?
 Definition
Verify6 all relays are operating properly.
Term
On GPS CCAs 1A17 and 1A18, how is the method of controlling relays K1 through K25 different from controlling K26 through K30?
 Definition
K1 - K25 are controlled only by the test station computer; K26 - K30 are controlled by signals from the UUT or computer.
Term
How many low-and high-resolution DAC channels can each improved DAC CCA provide as a source of stimuli to the UUT?
 Definition
Eight 12bit, low-resolution channels, and five 16-bit, high-resolution channels.
Term
Briefly describe the functional characteristics of the three switching networks in each EMM CCA.
 Definition
The two low-voltage channels connect any one of 40 analog signals to any one of seven outputs; the single high-voltage channel connects either of two high-voltage differential signals to one high-voltage differential output.
Term
What's the function of the MLPRF CCA?
 Definition
Generates timing and controls signals for the MLPRF UUT and provides various UUT clocks to affect data timing.
Term
Which CCA provides biphase stimulus to the UUT, and then evaluates the biphase reponse from the UUT?
 Definition
SI (1A5)
Term
What do ABE CCAs emulate?
 Definition
Serial and parallel buses used to interface a UUT.
Term
What monitoring capabilities are built into the IFC CCA?
 Definition
Power supply self-test and ITA interlock.
Term
What's the basic function of ILF measurement CCAs 1A23 and 1A24?
 Definition
To amplify or attenuate analog signals from the UUT, and then send the resulting conditioned signal to the measurement subsystem.
Term
What's the bandwidth of an ILF measurement CCA?
 Definition
1 MHz.
Term
What's the FREQ range of the HF measurement CCA?
 Definition
DC to 10 MHz.
Term
Which IUA CCAs drive the analog AFG CCAs to generate arbitrary waveforms?
 Definition
Digital AFG (3A1 and 3A3).
Term
What's the primary function of the analog AFG CCAs?
 Definition
To generate arbitrary analog waveforms for test station and UUT stimulus.
Term
Briefly describe the characteristics of the LF pulses provided by the dual stimulus buffer CCAs.
 Definition
The LF pulses are below 5 KHz, with amplitude limits up to +-30 VDC.
Term
Why are the input signals to the input buffer CCA attenuated?
 Definition
To prevent the output to the analog channel A and B CCAs from exceeding +-2 VDC.
Term
What are the output voltages ranges for the DC reference and resistance CCA?
 Definition
+-2 VDC, +-10VDC, and +-100 VDC.
Term
The analog channel A and B CCAs condition the analog signals before what action takes place?
 Definition
A/D conversion by the fast A/D converter CCA.
Term
Which IUA CCA provides a time base for providing four fixed FREQs, a square wave, and time-base outputs?
 Definition
The time-base/AC reference.
Term
What is the purpose of the RDT pulse generatged by the rate-delay generator CCA?
 Definition
Acts as a strobe for transferring instantaneous voltage levels from the analog channel A CCA into the fast A/D converter CCA.
Term
How are FREQ adjustments made to 10-MHz standard 3A21?
 Definition
By adjusting an on-board trim potentiometer.
Term
Which IUB CCAs are capable of generating and measuring 16 channels of discrete analog voltages from -32 VDC to +32 VDC?
 Definition
Discrete I/O (4A1 and 4A2).
Term
What programmable attributes are available for the output signal from the PGO CCA?
 Definition
Amplitude, offset, and transition time.
Term
What type of output can be accomplished by connecting TG CCAs 4A7, 4A8, and 4A9 in series?
 Definition
Pulse burst.
Term
Where do the signals come from that are used to determine the deflection voltage during display testing of the advanced display controller CCA?
 Definition
From the photometric assembly and UUT.
Term
What is the primary function of the threat simulator CCA?
 Definition
To simulate up to four radar video signals that can be interpreted as threats.
Term
From what CCA does the raster video generator "C" CCA receive the TTL-leel video and synchronization signals it uses to generate MAVERICK video?
 Definition
Raster video generator "A"
Term
What types of RF output signals are available from the MSU? What's the overall output FREQ range of the MSU?
 Definition
CW, AM, PM, and side-lobe suppression signals; 21.4 MHz - 18.5 GHz.
Term
Which two components provide leveling control for the pin diode attenuator in HF leveler/amplifier SRU 5A2?
 Definition
(1) feedback amplifier.
(2) 12-bit DAC.
Term
Which MSU SRU is capable of switching incoming RF signals to the main output or precision port?
 Definition
HF output (5A4).
Term
What is the output FREQ range of the FREQ sythesizer SRU? Where does the 10-MHz reference signale com from that is used to help produce these FREQs?
 Definition
2.4 - 12.4 GHz; LF receiver SRU of the MMU.
Term
Describe what happens to the output of the pulse modulator in the LF leveler/amplifier SRU.
 Definition
It is amplified by the LF switch amplifier, selectively filtered by harmonic filters, and then fed to the LF output SRU.
Term
Coupler DC1 in the LF output SRU sends one of its outputs to the MSU's main output port (by the HF output SRU). What's the other output from DC1 used for?
 Definition
It's sent to the LF leveler/amplifier SRU's leveling loop circuitry.
Term
What's the basic function of the MMU?
 Definition
It measures all signals ranging from 30 MHz - 18.2 GHz.
Term
Besides its internal circuitry, what other dual power meter component ultimately determines the maximum measurable FREQ for any given test?
 Definition
The power head being used.
Term
What are the four possible RF sources for input to the RF input and downconverter SRU?
 Definition
(1) LRU 1
(2) LRU 2
(3) LRU 3
(4) MSU
Term
What are the two possible functions of the IF log/lin receiver SRU?
 Definition
(1) Provides a compressed IF for a 100-dB dynamic range.
(2) Acts as a linear amplifier for linear applications.
Term
What filtering bandwidths in the LF receiver SRU are available for the 21.4-MHz signal coming from the IF log/lin receiver SRU?
 Definition
1 MHz and 6 MHz.
Term
What are the primary functional components that make up the MMU's control section?
 Definition
Two TG/counter-timer CCAs, a self-test CCA, a dual AFG CCA, and an ATCP CCA.
Term
What TG/counter-timer CCA circuit provides pulses used by the MSU for RF and IF signal generation?
 Definition
TG.
Term
Which MMU CCA provides gate signals to the TG'counter-timer CCA for FREQ measurements?
 Definition
Self-test (6A5)
Term
Which MMU CCA provides the modulating signal that, when combined with an RF carrier signal in the MSU's LF leveler/amplifier CCA, is used to generate AM signals?
 Definition
Dual AFG (6A4)
Term
What's the main purpose of the bench base assembly?
 Definition
Provides a balanced precision support for test of WAC HUD DU and DO HUD DU, and calibration of the BAT.
Term
What allows access to the WAC HUD DU adjustment potentiometers, purge valves, and AGE connectors?
 Definition
HUD holding fixture.
Term
How is the 4-inch mirror properly aligned?
 Definition
By using the calibration fixture assembly as the positioning reference and the digital theodolite assembly as the transfer reference.
Term
What does the selector switch on the photometric assembly provide?
 Definition
It provides +12 VDC operating power from the surface mount connector on the digital theodolite assembly or from the RS-232 data cable interface connector.
Term
Which assembly is used to measure the angular position of targets?
 Definition
Digitial theodolite.
Term
Which assembly provides the stimulus to the HUD ambient light sensors?
 Definition
Light source.
Term
What does the calibration fixture provide the OTB system?
 Definition
A precise optical reference to establish the optical boresight of the OTB system.
Term
How are the storage units used?
 Definition
To transport and store the OTB system components and accessories, and provide a work surface when stacked.
Term
What are the three input power ranges?
 Definition
(1) Single-phase 230 (+-15%) VRMS at 47-53 Hz.
(2) 208 (+-10%) VRMS at 54-66 Hz.
(3) 200 (+-10%) VRMS at 360-440 Hz.
Term
What is the range of the output power?
 Definition
Single-phase, 115 (+-5%) VRMS at 54-63 Hz, 1,000W.
Term
What is the purpose of the variable DC power supply?
 Definition
Supplies manually programmable DC power to the light source assembly.
Term
What is the ouput range of the variable DC power supply assembly (A6)?
 Definition
0 to +18V at 1.6A.
Term
What are the input voltage and FREQ tolerances for line power monitor 7A4A1?
 Definition
Voltage is 177-268 VAC phase-to-phase, or 107-156 VAC phase-toneutral; FREQ is 46-67 Hz or 356-444 Hz.
Term
What PCU component is responsible for converting facility input power (if necessary) to 115-VAC, 60-Hz? to what units is thi voltage supplied?
 Definition
AC-AC power supply (7A4PS4); all test station unit cooling blowers, isolated power supply (3PS1), and station printer.
Term
What function is performed by the power factor correction circuitry in the power conversion assembly (7A4PS4)?
 Definition
Ensures the input current is in phase with the input voltage.
Term
Which PCU CCA provides interlock and DFI fault monitoring capability?
 Definition
Fault monitor (7A4A2).
Term
Which PCU assemblies provide 125 amps of circuit protection when facility power becomes unstable?
 Definition
RF filter (7A4FL1-7A4FL4).
Term
What PSU components keep HF nad LF noise to a minimum, and prevent those noises from passing back to the power source?
 Definition
EMI (8A12) and filter (8A14).
Term
What PSU assembly filters the 80-KHz ripple from the sine shaper's output signal?
 Definition
Capacitor (8A11).
Term
What four protective circuits are built into the main bias supply (8A13)?
 Definition
(1) Low-bias shutdown.
(2) Start-delay.
(3) OV shutdown.
(4) Current-limit.
Term
What component in the power module assembly (8A3) receives nd translates digital commands via the GIPB interface assembly
 Definition
The digital control assembly.
Term
How is the PSU configured for interface with the station computer?
 Definition
By means of two eight-position DIP switches located on the GPIB interface CCA.
Term
What type of output signals is available from the FCU?
 Definition
Single-and 3-phase 400Hz, or single-phase 800-Hz.
Term
Which FCU assembly minimizes HF switching noise from being injected back into the AC supply line?
 Definition
Common-mode EMI filter (14A1).
Term
From where does the AC-DC module (14A3) get its input? What is this output and where does it go?
 Definition
From differential EMI filter assembly (14A2); +400 VDC to the +400-VDC capacitor bank (14A4).
Term
What happens if the +400-VDC capacitor bank's charge exceeds +450 VDC or drops below +200 VDC?
 Definition
The DC-DC module's OV/UV circuitry sends a DFI signal to the module status CCA to disable the FCU output.
Term
From where does the 800-Hz module assembly get its operating power?
 Definition
AUX bias supply (14A7).
Term
Which FCU assembly receives and processes incoming data strings, and then uses that data to set the appropriate output relays?
 Definition
US&M CCA (14A16).
Term
At What temperature does the refrigeration unit begin conditioning the UUT cooling air coming from the blower unit?
 Definition
When the air from the blower unit exceeds 62.6 degrees F.
Term
What refrigeration unit component prevents icing during low-load operating conditions?
 Definition
A hot-gas bypass valve.
Term
What two combined factors cause the system refrigerant to condense to a liquid state?
 Definition
(1) Temperature.
(2) Pressure.
Term
How does the thermal expansion valve prevent liquid refrigerant from entering the compressor suction path?
 Definition
By maintaining the temperature of the refrigerant leaving the evaporator at approximately 9 degrees F above the saturation (boiling) temperature of the refrigerant.
Term
What component is mounted in the air outlet duct to detect air overtemperature conditions? What components act to protect the refrigeration unit from overtemperature conditions?
 Definition
The air temperature probe; case temperature switches (12S1 and 12S2).
Term
What is the basic difference between blower unit operation under GPIB control and manual-mode operation?
 Definition
Manual mode sets the system to maximum speed only and overrides GPIB mode.
Term
Which blower unit CCA controls the blower relay (13K1)?
 Definition
Control and signal conditioning (13A4).
Term
What effect does the manual override switch have on the GPIB interface assembly's ability to provide command and control signals to the refrigeration unit?
 Definition
None.
Term
Which assembly, when used in conjunction with the GPIB interface assembly, and the control and signal conditioning CCA, is part of a feedback loop that regulates blower speed?
 Definition
FREQ-to-voltage converter CCA (13A5)
Term
Which case temperature switch, if ndy, is energized if the blower unit is operating at 157.2 degrees F?
 Definition
13S2 only
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