Term
| Name the LRUs tested by the digital DAAE. |
|
Definition
| RTC, ATU, DFE, CIU, JLA, and JLB. |
|
|
Term
| The digital DAAE operates with what other station? |
|
Definition
|
|
Term
| What's the purpose of programmed self-test on the digital DAAE? |
|
Definition
| Ensure proper operation of the overall digital DAAE system and to isolate malfunction to replaceable components within the digital DAAE. |
|
|
Term
| What happens in the event of an over-temperature condition inside either bay? |
|
Definition
| Sensors light a power control panel indicator and shut down the power supplies if the over-temperature condidtion persists. |
|
|
Term
| List the items that make up the power distribution group. |
|
Definition
| Power supplies, control circuits, and the distribution netowrk. |
|
|
Term
| What DC voltages are supplied by the power distribution group? |
|
Definition
| Five VDC, 12 VDC, and +-15 VDC. |
|
|
Term
| What's the purpose of thge control circuits within the power distribution group? |
|
Definition
| Monitor operation of the group; if over-voltage, over-current or over-temperature conditions are detected, the equipment is automatically shut down and fault conditions are provided. |
|
|
Term
| Name the three subgroups of the power distribution group. |
|
Definition
(1) AC power and neutral system.
(2) DC power and ground system.
(3) Status and control system. |
|
|
Term
| What does the TMA FTG provide? |
|
Definition
| A microprocessor-controlled, bidirectional interface betweeen the IATE host computer and other digital DAAE FTGs via the IEEE-488 bus. |
|
|
Term
| Describe the process used to stimulate and evaluate an LRU. |
|
Definition
| Initially, the selected FTG stores the received data until a complete real-time stimuli are transfereed through buses to the UUT via the ITA set and test cable assemblies. Stimulation responses produced by the UUT are returned via the test cables and ITA on the buses to the FTG for logical evaluation. Test data resulting from the evaluation is routed to the TMA and processed for transmission via the IEEE-488 bus to the IATE host computer for further analysis. |
|
|
Term
| Which FTG provides interface between the IATE and DAAE? What bus and language are used between the IATE and the DAAE? |
|
Definition
| The TMA FTG provides the interface between the IATE and DAAE using the IEEE-488 bus. CIIL commands from the IATE are interpreted by the TMA to control DAAE functions and data transfers. |
|
|
Term
| What's the function of the ACU FTG? |
|
Definition
| Simulates operation of the avionics control unit. Is used primarily for testing the CIU that is stored and processed for transmission to the TMA FTG. |
|
|
Term
| What capabilities are provided by the CIU FTG during off-line testing of a CIU? |
|
Definition
| Provides the capabilities for reception memory utilization, real-time tag for received data, and real-time synchronizatino between the ACU, ESP, bus simulation, and real-time tags during off-line testing and fault isolation. |
|
|
Term
| What does the ATU FTG simulate? |
|
Definition
| Complex radar signatures to test the ATU and monitors the response of the ATU to these stimuli. |
|
|
Term
| The ESP FTG provides the real-time scenario emitter descriptor inputs during off-line testing fault isolation for which LRUs? |
|
Definition
| RTC, ATU, CIU, JLA, and JLB. |
|
|
Term
| What does the ABC FTG simulate? |
|
Definition
| Signals and data normally sent to and received from different units under test (JLA, JLB, and RTC) in their normal environment (installed on the aircraft). Responses received by the ABC FTG are stored and processed for transmission to the TMA FTG. |
|
|
Term
| How is the DFE response monitored? Why? |
|
Definition
| By the DF encoder FTG. To determine whether the DF encoder under test is defective. the DF encoder FTG controls the 1207 status bus and generates 96 VIDEO outputs of fixed or variable amplitude, depending on the programmed information. Al communications with the DF encoder under test will be through the ICA. |
|
|
Term
| What components make up the TAG? |
|
Definition
| The DAAE ITA, IATE ITA, self-test cables, and STA. |
|
|
Term
| What's the purpose of the STA? |
|
Definition
| Is used for IAT and cable self-test. |
|
|
Term
| What are the three forms of wiring in the digital DAAE? |
|
Definition
(1) Cabinet cabling.
(2) Cabinet and assembly harnessing.
(3) Backplane wire wrapping. |
|
|
Term
| What's the purpose of the cable termination list? |
|
Definition
| Tabularize the connections of all DAAE interdrawer cables. |
|
|
Term
| How are the standard wire-run lists tabularized? |
|
Definition
In three columns
(1) FROM TERMINAL
(2) TO TERMINAL
(3) AWG NO.
The first lists the source of each wire, the second lists the wire destination, and the third documents the wire size. |
|
|
Term
| What's the purpose of the signal-family list? |
|
Definition
| Is provided for convenience in determining all wires connected to a pin in the double-entry wire listing. |
|
|
Term
| What additional information is added by the signal-family list? |
|
Definition
| The SIGNAL NAME (column 7) documents the signal anme for the signal number in column 6 (RD@). The last area of the signal-family list, column 8, is the TERMINALS IN SIGNAL FAMILY column/columns. |
|
|
Term
| What test verbs are used with the DAAE? |
|
Definition
| SET UP, INITATE, FETCH, and REMOVE. |
|
|
Term
| What test verb initiates all necessary parameters? |
|
Definition
|
|
Term
| What ATLAS noun modifiers are peculiar to the RF DAAE? |
|
Definition
| THREAT SCAN, FREQ ENCODING, and PATTERN GENERATOR. |
|
|
Term
| What noun modifier identifies the UUT? |
|
Definition
|
|
Term
| Which components make up the LRU DC power generation and switching section of the RF module? |
|
Definition
| DC power switching assembly, and 8 LRU DC power supplies. |
|
|
Term
| How is the AC power applied to the eight DC power supplies? |
|
Definition
| Through the use of relays (K1-K8). |
|
|
Term
| What signals are applied to the DC power supplies to make automatic adjustments to the output voltage? |
|
Definition
| To monitor the output voltage and LOCAL/REMOTE SENSE. |
|
|
Term
| What is the purpose of the sense lines used by the DC power supplies? |
|
Definition
| To monitor the output voltage and provide feedback to the individual power supply voltage regulators. |
|
|
Term
| How many of the eight DC power supplies can be activated at one time? |
|
Definition
| A signel unit, several units, or all of the DC power supplies, depending on UUT requirements. |
|
|
Term
| Describe the difference between local and remote sensing. |
|
Definition
| A local sense line samples the DC power supply output at the DC power switching assembly, while remote sensing takes a sample of the output voltage just prior to it being applied to the UUT. |
|
|
Term
| How does the computer know when an LRU DC power supply is energized? |
|
Definition
| The second set of relays in the controlled turn-on assembly generates a FLAG OUT signal that is applied to the monitor CCA. |
|
|
Term
| What type of power is required to energize the RF Module LRU DC power supply assemblies? |
|
Definition
| Two phases of 120/208 VAC, 50/60 Hz. |
|
|
Term
| What SIM CCAs are used to control the operation of the DC power switching assembly? |
|
Definition
| Power sense switch and power switch driver. |
|
|
Term
| How does the test station computer select the power supply output to be switched to the ICA? |
|
Definition
| PS1 SELECT signals are generated by the SIM power switch driver CCA to energize the appropriate DC power switching assembly relays. |
|
|
Term
| When is the ITA interlock driver signal present? |
|
Definition
| When an ITA/STA is installed on the test station. |
|
|
Term
| Why are the DC power supply sense signals routed to the four-wire bus? |
|
Definition
| This makes the power supply outputs available to the test station for diagnostic testing. |
|
|
Term
| What types of frequency stimulus does the RF module provide? |
|
Definition
| Microwave stimulus includes continuous wave (CW), amplitude modulation (AM), pulse modulation (PM), biphase modulation, frequency modulation (FM), and pulse amplitude modulation (PAM |
|
|
Term
| Which components provide the stimulus in the RF module? |
|
Definition
| Three RF synthesizers are used to provide the CW and modulated signals required for LRU testing. Timing and reference signals from the SIM are used to modulate the outputs of the synthesizers as required. |
|
|
Term
| Which components provide stimulus to the LRU indirectly? |
|
Definition
|
|
Term
| Which RF module synthesizer is connected to unswitched AC power? Explain why this is done. |
|
Definition
| Synthesizer 3A1A4; unswitched power maintains a constant temperature for the synthesizer crystal oscillator, negating warm-up time and increasing accuracy. |
|
|
Term
| Describe the output hcaracteristics of the RF synthesizers used in the RF module. |
|
Definition
| CW or modulated outputs with a frequency range of 10 MHz to 18 GHz and a power output range of -110 to +110 dBm. |
|
|
Term
| Which RF synthesizer provides the PM signal that the MSC converts to a biphase signal? |
|
Definition
|
|
Term
| What is the source of the drive signals used to produce PM in the RF synthesizers? |
|
Definition
| STB, 10 MHz REF, or STG from the test station SIM. |
|
|
Term
| What drive signals are used to produce AM and FM in the RF synthesizers? |
|
Definition
|
|
Term
| Which synthesizer outputs pulse amplitude modulation, and how is this signal produced? |
|
Definition
| 3A1A4; PAM results when the PM and AM drive signals are applied simultaneously. |
|
|
Term
| What functions are performed by the MSC? |
|
Definition
| Controlling operation of the synthesizers, power meter, and spectrum analyzer via a secondary bus; providing modulation drive signals; modulating and demodulating test signals; and routing signals to and from the UUT. |
|
|
Term
| What power supply conditions are monitored inside the MSC power supply? |
|
Definition
| Overvoltage, undervoltage, and overcurrent on each output voltage. |
|
|
Term
| What is the power range, in dBm, that the RF module can measure? |
|
Definition
| The RF module power meter is used for power measurements between -70 and +35 dBm. |
|
|
Term
| What types of measurements can be made with the spectrum analyzer? |
|
Definition
| It measures power generated by the UUT. Additionally, it can provide frequency measurements and visual indication of many types of modulated waveforms. |
|
|
Term
| What types of measurement can the MSC make? |
|
Definition
| Capable of performing frequency, pulse width, time interval, DC voltage, and pulse amplitude measurements of demodulated signals. |
|
|
Term
| What is the purpose of power meter 3A1A1 in the RF module? |
|
Definition
| Making RF power measurements in the range of -70 to +35 dBm. |
|
|
Term
| Identifiy the three sensors used with the power meter and state their measurement ranges. |
|
Definition
| 8484A, -70 to -20 dBm; 8481A, -20 to +10 dBm; 8482H, 0 to +35 dBm. |
|
|
Term
| What precautions do you take to prevent damaging the power meter sensors? |
|
Definition
| Do not drop or jar sensor; turn off power meter before removing or installing a sensor; ensure that the power being measured won't exceed the rating of the sensor |
|
|
Term
| What is the frequency range of the spectrum analyzer? |
|
Definition
|
|
Term
| What is the sequence of events that occur when you are using the spectrum analyzer to measure signal characteristics? |
|
Definition
| Commands and setup data are sent to the spectrum analyzer via the MSC and a secondary IEEE-488 bus. Measurement results are then routed back to the test station computer along the same route. |
|
|
Term
| What signal characteristics are measured by the MSC? |
|
Definition
| Rise/fall time, pulse width, pulse repetition frequency (PRF), modulation frequency, percent of modulation, and frequency deviation. |
|
|
Term
| How is data encoded in a PM signal? |
|
Definition
| As PRF, pulse width, or pulse rise and fall time. |
|
|
Term
| How is a PM signal processed by the MSC? |
|
Definition
| Biphase/AM/pulse demodulator assembly A11 removes the RF carrier leaving a simple pulsed signal. Timing Generator/Timer Counter CCA A3 measures the CW FREQ signal to determine the PRF and the TR/TF PULSE output to determine the pulse width, rise time, and fall time of the signal being measured. |
|
|
Term
|
Definition
| The amplitude of a modulating FM signal. |
|
|
Term
| How are FM deviation measurements made by the MSC? |
|
Definition
| The FM signal is demodulated by the FM demodulator assembly (A10) and is applied to !11 for further processing. A11 outputs VIDEO PULSE to A5 that determines the FM deviation. |
|
|
Term
| What signals are required when performing a biphase measurement? |
|
Definition
| A biphase modulated RF signal, two local oscillator signals, and a 50 MHz clock signal. |
|
|
Term
| How is the LRU 50 MHz REF signal used during biphase demodulation? |
|
Definition
| Shifts the biphase-coded modulation into the biphase decoder in a serial format. |
|
|
Term
| What items in the R/EW test station require unique ATLAS statements? |
|
Definition
| ATLAS statements peculiar to the R/EW test station control the fixed DC power supplies, MSC, MSC power supply assembly, RF synthesizers, phase noise analyzer, spectrum analyzer, and the power meter. |
|
|
Term
| How does the station computer know which assets are required by the program? |
|
Definition
| All of the station resources are assigned a number or resource code that tells the computer which asset to use. |
|
|
Term
| When can you use the SETUP command to program a fixed DC power supply? |
|
Definition
| To modify the previous and effective APPLY statement; howerver, you can only use the SETUP command for internal confidence testing. |
|
|
Term
| What ATLAS commands are used to provide RF stimulus? |
|
Definition
| APPLY, SETUP, and remove. |
|
|
Term
| What types of RF stimulus can you provide? |
|
Definition
| Continuous wave, pulsed AC, amplitude modulation, frequency modulation, biphase modulation, and pulse amplitude modulation. |
|
|
Term
| How do the VERIFY and MEASURE commands differ? |
|
Definition
| MEASURE performs the same function as VERIFY, but compare (evaluation field) is omitted. |
|
|
Term
| What RF measurement command displays the results of a measurement on the CRT? |
|
Definition
|
|
Term
| Where are the results of the READ command stored? |
|
Definition
| The results are stored into the system variable 'MEASUREMENT'. |
|
|
Term
| List the common names of the eight AN/ALQ-161A LRUs tested by the RF DAAE. |
|
Definition
(1) Band 1-3 receiver.
(2) Encoder.
(3) tail warning function receiver processor.
(4) Band 4/5 RF source.
(5) Band 6 RF amp/RF source.
(6) Band 7 repeater/RF source.
(7) Band 8 repeater/RF source.
(8) Waveform generator. |
|
|
Term
| Describe real-time synchronized stimulus/response techniques. |
|
Definition
| Test scenarios are set up by the R/EW IATE and RF DAAE and then are executed to simulate the LRU circuitry to operate in a predetermined fashion. The LRU responses to the test scenarios are received by the RF DAAE and are sent to the R/EW IATE. The IATE evaluates the response data to determine whether the LRU is operating correctly. |
|
|
Term
| What is the purpose of the ICA? |
|
Definition
| To provide the means for interfacing various FTGs of the RF DAAE test station with external devices used to interconnect the DAAE with different UUTs. |
|
|
Term
| What happens if low airflow is detected in the DAAE cabinets? |
|
Definition
| Airflow switches activate an alarm and an indicator on power control assembly A1 and shut down the power supplies if low airflow from the cabinet blowers is detected in the cabinet. |
|
|
Term
|
Definition
| Used to test the WFG LRU. The WFG FTG is configured for each test under TMA FTG control by software in the IATE and TMA FTG. The WFG FTG supplies wtimuli to the UUT and accepts responses from the UUT during off-line testing and fault isolation. |
|
|
Term
| What is the purpose of the digital interface in the band 1-3 receiver FTG? |
|
Definition
| To send data and control information, including left and right antenna inputs, to the Bd 1-3 UUT andto receive status and pulse descriptor (PD) information from the receiver during off-line testing and fault isolation. |
|
|
Term
| What is the purpose of the RF interface in the band 1-3 receiver FTG? |
|
Definition
| To generate a series of pulses for transmission to the receiver under test. Pulses are used to modulate RF carriers in the IATE and send the resultant RF signal through the Bd 1-3 receiver FTG to receiver under test. |
|
|
Term
| State the purpose of the RFS FTG. |
|
Definition
| It provides a digital and RF interface with the RFS bands 4-8 LRUs. |
|
|
Term
| What are stimuli from the FRE FTG used for? |
|
Definition
| To simulate the normal FRE operating conditions. Video stimuli are sent to the FRE under test to elicit a pulse descriptor word, while IFX pulses generated by the FRE FTG modulates RF stimuli. Digital stimuli are provided to satisfy status, switching, control, and threshold requirements. |
|
|
Term
| What does the UUT provide to the TWR FTG, and how is it used? |
|
Definition
| Under test, it provides a sample of its coherent scillator (COHO), stable local oscillator (STALO), and synchronization signals. On command from teh TMA FTG, this FTG processes these signals and generates a simulated radar return for injection into the TWR antenna input. |
|
|
Term
| What components make up the TAG? |
|
Definition
| DAAE ITA, IATE ITA, and self-test cables (W1-W7). |
|
|
Term
| Waht is the purpose of the TAG? |
|
Definition
| Allows data and control signals to be transferred between the R/EW IATE and RF DAAE during the RF DAAE self-test. |
|
|
Term
| What does the cable termination list document? |
|
Definition
|
|
Term
| How are wire-wrap programs documented? |
|
Definition
| As wire connection lists. |
|
|
Term
| Each wire-wrap program is organized into three lists. How are these lists further divided? |
|
Definition
| Into signal name directory, input data listing, signal-family listing, and double-entry wire listing. |
|
|
Term
| What does the signal name directory list provide? |
|
Definition
| A cros-reference between the siganl number and the signal name. |
|
|
Term
| What are the components of the AC power and cooling subsystem? |
|
Definition
| The primary AC box, secondary AC box, master and slave 30 KVA PDUs, cooling fans in each frame, and the EMO loop. |
|
|
Term
| Where are the four emergency off buttons located on the test station? |
|
Definition
| Two on the front of the station at control panel 1A2 and panel 4A2, and two on the rear of the station on the primary and secondary AC boxes. |
|
|
Term
| What happens during the first three seconds of conversion while the main ower switch is being held in? |
|
Definition
| The master and slave power distribution units each verify the incoming power for phase rotation, under and overvoltage, and overcurrent conditions. |
|
|
Term
| What does the uninterruptible power supply provide power to when it is turned on? |
|
Definition
| The controller, monitor, KVM, Ethernet hub, printer, keyboard, and mouse. |
|
|
Term
| What is the function of the thermistors in each of the cabinets? |
|
Definition
| To open the EMO loop, causing test station power down if the temperature inside any of the cabinets exceeds 122 degrees F |
|
|
Term
| What prevents power on to the UUT unless all protections are in place? |
|
Definition
| Interlocks for all of the programmable power supplies that are controlled by the UUT power controller. |
|
|
Term
| What do the DLM series power supplies provide? |
|
Definition
| Two DLM 10-60, located at 1A14 and 1A15, provide up to 10 VDC with a maximum of 60 amps current. One DLM 20-30, located at 1A6 provides 20 VDC at 30 amps maximum. Seven DLM 41-15, located at 1A7, 1A8, 1A10, 1A11, 1A13, 5A8 and 5A9, provide 41 VDC/6.25 A, 0-80 VDC/2.5 A, and 0-160 VDC/1.25A modules. |
|
|
Term
| What is the AT800A composed of? |
|
Definition
| Five modular 200-watt DC supplies housed in a single chassis located at 1A3. The five supplies include a two 0-20 VDC/10 A, and one each of 0-32 VDC/6.25 A, 0-80 VDC/2.5 A, and 0-160 VDC/1.25A modules. |
|
|
Term
| What makes up AC1 supply? |
|
Definition
| Three CW 801 single-phase AC supplies are cabled together. The three CW801 modules are located at 4A5, 4A6, and 4A7, with 4A7 being the master module that outputs phase A, 4A6 a slave module outputting phase B, and 4A5 also slave module, outputting phase C. |
|
|
Term
|
Definition
| Under test program control, it receives AC voltages from AC1 and AC2 and couples the voltage across one of nine internal transformers to obtain one of 18 desired outputs. |
|
|
Term
| What are the basic specifications of the station computer? |
|
Definition
| Intel 865G chipset computer running the Windows 2000 operating system, a Pentium 4 processor running a 2.6 GHz or faster, with 1 GB of RAM, two removable 80 GB mass storage drives, a DVD writer, a 3-1/2-inch floppy drive for data storage, and a 14 slot variable configuration backplane. |
|
|
Term
| What is the purpose of the CAT5KVM extender? |
|
Definition
| It allows for the monitor, keyboad, and mouse to be placed as far as 150 feet from the station. |
|
|
Term
| Wh does the Ethernet switch 2C1 provide for the system? |
|
Definition
| High-speed 10/100 Mbps auto-sensing connectivity. Five ports provide LAN access to as many as five users. |
|
|
Term
| What are the two methods for loading the system controller software? |
|
Definition
| The first is the complete software load that deletes all data on the system hard drive and installs and initializes each software package, starting with the operating system. All software settings must be verified and/or changed during this process. The second software load is accomplished by restoring the system software. This process requires that the system controller has been previously imaged. This process restores the system software to the state (including all settings) when the system controller has been imaged. |
|
|
Term
| What does the resource manager utility program do for the station VXI interface? |
|
Definition
| It initializes the communications path, polls each VXI chassis for its instruments, and then assigns logical addressing and memory allocation based on each instrument's requirements and the slot 0 controller's settings. |
|
|
Term
| What station components are connected by GPIB 0? |
|
Definition
| Agilent 33250A Waveform Generator, Agilent 3458A Digital Multimeter (2), Elgar AT8000A DC Power Supply, Elgar DLM 10-60 DC Power Supply (2), Elgar DLM 20-30 DC Power Supply, Elgar DLM 41-15 DC Power Supply (5), Elgar DCS 40-25 DC Supply. |
|
|
Term
| What station components are connected by GPIB 1? |
|
Definition
| Elgar CW 801 3 phase AC supply, Elgar CW 2501 1 phase AC supply (2), Elgar CW 2503 3 phase AC supply, Elgar SW 5250 3 phase AC supply, Elgar TW 5250 3 phase AC supply, Elgar DLM 41-15 DC power supply (2), Keithley 2420 DC source meter (6). |
|
|
Term
| What does the DAQ interface do? |
|
Definition
| It provides a path between the system controller and the forced air blower 2A1. |
|
|
Term
| What is special about force channels 33, 34, and 35 on the two Agilent digital multimeters? |
|
Definition
| They have 75, 93, and 50 ohm terminating resistors, respectively, for selectable loading. |
|
|
Term
| Where does teh 10 MHz standard signal for station analog instruments come from? |
|
Definition
| The VM2164 TIC provides an accurate 10 MHz clock signal to the 3A1-A0 VXI-MXI controller. This clock is fed through the controller to the VXI chassis backplane and out to the analog instruments that require it. |
|
|
Term
| What does the VT1802 provide for the station? |
|
Definition
| 120 single or 60 differential discretedigital channels. Each channel can be set to tri-state mode. Channels are arranged in 10 groups of 12 channels, with each group selectable under program control for input or output. Channel outputs are program selectable at 28 VDC/140 mA or 73 VDC/1 mA. |
|
|
Term
| What makes up the M9 digital test instrument? |
|
Definition
| Two VXI modules, the M927-04 channel card located at 3A3-A5 and the M-918-04 CRB located 3A3-A6. These two modules are replaceable independently but must be installed as a set. Neither module will work correctly without its mate. |
|
|
Term
| What are the individual sine wave outputs of the two Racal 3171 AWGs? |
|
Definition
ARB/PGEN 1's sine wave is 20 MHz sine wave and passes through a 20 MHz filter to the ICA.
ARB/PGEN 2's sine wave is 40 MHz sine wave and passes through a 40 MHz filter to the ICA. |
|
|
Term
| Whare are the output capabilities of the Agilent 33250A AWG? |
|
Definition
| Up to 80 MHz of sine and square wave outputs. The AWG can also produce ramp, noise, and other programmed waveforms and generate pulse waveforms up to 50 MHz with variable rise/fall times. |
|
|
Term
| What is the purpose of the oil-cooling cart? |
|
Definition
| To provide cooling oil to LRUs being tested in the shop. |
|
|
Term
| What determines the flow rate of cooling oil being supplied to the UUT? |
|
Definition
| Cooling requirements of the UUT and ambient temperature conditions. |
|
|
Term
| What are the two modes of operation of the oil-cooling cart? |
|
Definition
|
|
Term
| How does the oil-cooling cart respond to the +12 VDC control signal from the IATE? |
|
Definition
| Electrical panel assembly sends +28 VDC interlock signal to the test station. |
|
|
Term
| When does the alarm circuit of the oil-cooling cart activate? |
|
Definition
| When one of the temperature or flow switches open. |
|
|
Term
| What provides ground for the motor control circuit? |
|
Definition
| A temperature switch located at the output of the A4 hydraulic pump. |
|
|
Term
| What are the hydraulic circuits made up of? |
|
Definition
| Flow meter, flow switch, and pressure gauge. |
|
|
Term
| What does the unused hydraulic circuit do when only one LRU is being cooled? |
|
Definition
| It bypasses using the jumper hose assembly. |
|
|
Term
| What is the purpose of the differential pressure selector valve? |
|
Definition
| Allows the operator to select which inputs will be applied to the differential pressure gauge. |
|
|
Term
| How does the oil-cooling cart cool the hot oil? |
|
Definition
| It is passed through coils that have cooling air blown (flows) across them. |
|
|
Term
| List the three computer systems associated with the test station and include any alternate names they go by. |
|
Definition
(1) DEC AlphaStation 200 or the DEC computer.
(2) SPARC station 20 or the Sun computer.
(3) HP Vectra or phase noise computer. |
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Term
| Describe how the DEC and Sun computers control the test station. |
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Definition
| The DEC computer is the overall system controller and user interface. The statino operator does not interface with the Sun computer directly because the Sun computer does not have a keyboard or monitor. It is accessed through the DEC computer via Ethernet. Any commands the Sun computer executes or messages it returns are through DEC operating system. The Sun computer interfaces with and controls the test station instruments (TRU). It controls all the TRus, stimulus and measurement, via the IEEE and RS 232 buses. |
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Term
| What is the other name for the Ethernet interface? |
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Definition
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Term
| What are the three handshake lines on the IEEE-488 bus? |
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Definition
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Term
| List the interface management lines used by the GPIB. |
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Definition
| ATN, EOI, IFC, REN and SRQ. |
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Term
| What is the main power input for the L393 test system? |
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Definition
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Term
| What contains the IEEE bus circuit breakers? |
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Definition
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Term
| What contains the subsystem contactors, power line filters, and circuit breakers? |
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Definition
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Term
| What contains the RF and test contactors? |
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Definition
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Term
| What contains the 24V system controler transformers? |
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Definition
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Term
| What only contains the circuit breakers for L-x-x power supplies in bay 3? |
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Definition
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Term
| When replacing instruments in the test station, why is it important you plug the new instrument into the same power strip as the old instrument? |
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Definition
| To maintain the load balance. |
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Term
| What plug-in modules are used by the two HP 8110 pulse generators in bay 2? |
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Definition
| The HP 81103A output channel and HP 81106A PLL/external clock. |
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Term
| Name atleast four of the measurement functions of the HP 53132A counter in bay 4. |
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Definition
(1) Frequency
(2) Period
(3) Pulse width
(4) Duty cycle
(5) Rise time
(6) Fall time
(7) Time interval
(8) Frequency ratio.
(9) Totalize
(10)Phase
(11)Peak voltage |
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Term
| What waveforms can the AFG2020 arbitrary function generator in bay 4 produce? |
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Definition
| The standard waveforms of sine, triangle, ramp, square, and pulse, and 32 types of custom waveforms. |
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Term
| Which power supply in bay 5 is capable of acting as a measurement device? |
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Definition
| The Keithley 237 power supply. |
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Term
| What instrument is the ONLY AC power supply in the analog subsystem? Where is it located? |
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Definition
| The California Instruments 4500L AC power supply; at the bottom of bay 5. |
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Term
| Describe the function of relay boxes A and B. |
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Definition
| The relay boxes provide safety interlock control for the high-voltage power supplies in bays 5, 7, and 8. The interlock system allows any voltage present at the DCAI to be removed if any power supply cables are disconnected. Each power supply connector has two interlocked pins that are shorted when the cable is plugged to the power supply. The short is detected by the relay box, which closes a relay to engage the respective power supply. If the relay box detects an open, it immediately toggles a relay that shuts down the respective supply. |
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Term
| The HP 80000 data generator system is used for what? |
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Definition
| To characterize or emulate fast ICs, modules, or components by generating data in the form of PRWSs and PRBSs. |
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Term
| What are the models, quantities, and ratings of the plug-in load modules used in the two electronic load mainframes in bay 8? |
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Definition
| The first mainframe contains two HP 60503B modules rated at 250 wattss each, and one HP 60504B module rated for 600 watts; the second mainframe contains four HP 6050A modules rated for 150 Watts each. |
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Term
| What does the tub assembly do? |
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Definition
| It provides the interface between the UUT and the station stimulus/measurement instruments, generates digital signals to be sent to the UUT, and recives digital signals from the UUT to be analyzed. |
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Term
| What assemblies and systems make up the tub? |
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Definition
| The left matrix card cage, left utility card cage, driver/detector card cage, right utility card cage, cooling system, and mechanical rotation system. |
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Term
| What is made up of a series of terminators? |
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Definition
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Term
| What buffers the test station bus to all cards in the right utility card cage? |
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Definition
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Term
| What produces the drive phase and test windows to the driver/detector cards? |
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Definition
| Phase generator circuit card. |
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Term
| What interprets the object code? |
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Definition
| Digital command processor. |
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Term
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Definition
| Data acquisition controller circuit card. |
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Term
| What is the path of a typical analog stimulus signal during UUT testing? |
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Definition
| It is generated by an analog system instrument and goes to the DCAI. A jumper cable on DCAI routes the signal to the ASCOR matrix. The signal is routed from the ASCOR matrix to the tub's D17 driver/detector cards where it is switched to the ZIF connectors through relays on top of the D17 card. The signal then goes through the base fixture, the PM, and finally through test cables to the UUT. |
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Term
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Definition
| A bus specifically designed for automated test systems and data collection. |
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Term
| How many connections does the hybrid pin matrix support? How are they broken down? |
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Definition
| 456 connections; 408 pin connections distributed to 17 of the 22 D17 channel cards, and 48 instrument connections that go to the DCAI. |
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Term
| List the modules in the HP VXI mainframe in bay 2. |
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Definition
| Slot 9 controller, ARINC 429 module, 1553 bus module, and GPS module. |
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Term
| What is the configuration of the 14 slots in the backplane of the station computer? |
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Definition
| Eleven PCI backplane slots, two ISA backplane slots, and one ISA/PCI combination backplane slot. |
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Term
| What does Teststudio provide for the station? |
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Definition
| An intergrated environment for TPS, development, execution, and documentation. |
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Term
| When does communication with VXI components in the station start? |
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Definition
| When you run the resource manager (Res Man) program. |
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Term
| How are the GPIBs identified or labeled? |
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Definition
| GPIB 0 or main instrumentation, GPIB 1 or ancillary, and GPIB 2 or front panel. |
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Term
| What are the four basic components of the PDU? |
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Definition
(1) Isolation transformer.
(2) Low-pass filter.
(3) Surge suppressor.
(4) Phase rotation monitor. |
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Term
| Where are the two EMO buttons located? |
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Definition
(1) On the primary AC box on the back of unit 1.
(2) On the station control panel on the front left side of unit 1. |
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Term
| What components make up the EMO loop? |
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Definition
| The two EMO buttons, three temperature sensors (one in each bay), and main power switch on the station control panel. |
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Term
| What has the same effect as pressing one of the EMO buttons? |
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Definition
| Pressing the off portion of the main power switch. |
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Term
| List the components powered by the secondary PDU. |
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Definition
| UUT blower (2A1), Elgar CWD 2501P AC power supply (3A1), HP 6035A DC power supply (3A4), Elgar 351SL AC power supplies (3A11 and 3A12), and all of the druck pressure test system components in unit 4. |
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Term
| What voltage does power supply 66000 have? |
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Definition
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Term
| What voltage does power supply 6035A have? |
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Definition
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Term
| What voltage does power supply DLM60-10 have? |
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Definition
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Term
| What voltage does power supply CW2501P have? |
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Definition
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Term
| What voltage does power supply 2003RP have? |
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Definition
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Term
| What voltage does power supply 351SL? |
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Definition
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Term
| What does the CRB in the DTI provide? |
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Definition
| Clock generation, central timing, guided probe, and other instrument-wide functions. |
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Term
| How many digital pins are provided by each of the DTIs? |
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Definition
| The DTI VXI chassis 1A4 has 192 pins; the DTI in VXI chassis 1A5 has 64 pins. |
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Term
| What modules are available to the SCPM? Which ones are used in the CATE SCPM? |
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Definition
| The matrix module, pass-thru module, and port module; 10 matrix modules and three port modules. |
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Term
| What is the flow of command instructions in the VXI chassis 2A3? |
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Definition
| The chassis controller card in slot 0 sends commands to the three assemblies that contain the option 01T switch module controls. The switch module controls then send commands to the modules they control. |
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Term
| What must you do to access the SCPM 1A3 or VXI chassis 1A4? |
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Definition
| Lower the ICA to a horizontal position on its hinged frame. |
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Term
| How are the tiers of the ICA labeled? Which ones are currently used? |
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Definition
| Starting from the top, the tiers are identified as A1, A2, and A3; A1 and A2 |
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Term
| The three VM3616A-3 DACs in the VXI chassis 2A4 are treated as how many independent instruments within the VXI chassis? |
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Definition
| 9 (each of the three DACs contain 48 channels that are divided into three groups of 16; each of those groups is treated as an independent instrument) |
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Term
| What are the VXI-AICs used for? |
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Definition
| To provide integrated interface to multiple avionics data busses. The VXI-AIC in slot A8 of chassis 2A4 is configured to support RS-232 and RS-422 communications protocols. The VXI-AIC in slot A9 is configured to support RS-429 and ARINC-573 communication protocols. |
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Term
| Why is the 2461C frequency counter so effective at providing accurate measurements of signals in noisy environments? |
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Definition
| It has selectable sensitivity and 50 kHz low-pass filters on each channel. |
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Term
| What are the resolution settings of the HP E1412A multimeter? |
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Definition
| 4.5 digits for fast measurements or 6.5 digits for greater accuracy. |
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Term
| What does the PV103 provide for the station? |
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Definition
| Vacuums equivalent to 85,000 feet and pressure for airspeeds up to 1,000 knots. |
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Term
| What component of the computer automated display test set is used specifically to test the HUD LRU? |
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Definition
| The low-level photopic high-speed PMT assembly. |
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Term
| What functions as the intelligent interface between the CATE and DUTS measurement devices? |
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Definition
| The intelligent radiometer. |
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Term
| What computer automated display test set component provides the ability to make multicolored measurements? |
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Definition
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Term
| What two items of the computer automated display test set are specifically used to test the MFD LRU? |
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Definition
(1) TRI-PMT assembly.
(2) Supplementary lens. |
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Term
| What is the function of the variable light source? |
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Definition
| It provides a stimulus to the ambient light sensors of the LRU under test. |
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Term
| How does the intelligent radiometer communicate with the CATE? |
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Definition
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Term
| What component is used as a reference for alignment of the DUTS? |
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Definition
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