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43 Cards in this Set
- Front
- Back
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REP: Video Signal Output:
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PPI threshold
B-Scan Threshold Analog PPI video I/Q phase history video digital SAR image. |
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What does the REP control function provide?
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Power-up, initialization, calibration, BIT, and mode changes.
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Where does the waveform start?
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In the REP.
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Transmitter
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50kW power amplifier. Pulse is between 9.35 and 10.15 GHz. the PRF and pulse width vary depending on the mode selected. Also contains waveguide pressurization
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PPS (Programmer Power Supply)
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The power supply provides for BITE to monitor status of waveguide pressurization, IFF triggers, antenna gimbals (pitch, roll, yaw, tilt) and reports status to the RSCI.
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Antenna
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Transmits and receives X-band RF energy for radar applications and L-band RF energy for IFF applications.
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IMU
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Inertial Measurement Unit - received input from the PPS. Used for SAR and REP ISAR.
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Functions of the SDC
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Sweep generation
Processes PPI and image video Range ring/target symbol generation Memory Storage |
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RSCI
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F: Freeze
A: A/C motion Compensation T: TWS (32 targets) B: BITE function A: A-Scan B: B-Scan E: Erase Q: Quadrant Control |
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RSCMP
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Radar Set Computer- used in ISAR to provide ship classification (maintains ship parameter database and overlays.)
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VCU
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Video Converter Unit- receives five video inputs:
1 Radar composite video 2 A-scan or B-scan radar video 3 Maverick missile video 4 aux channel video and 5 IRDS composite video Converts the inputs for use on the VTR's. (default, VTR1=Radar Video, VTR3=missile video). |
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VTR
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Video Tape Recorder = receives composite video from AIMS AIC. 8mm hi-res tapes
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Interface with GPS
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GPS is necessary for SAR PPS. Antenna receives circularly polarized dual-band RF signals transmitted from the BGPs Block II Satellites. Proved to the GPS Pre-Amp for filtering and amplification. Fill port (Brick) required to load the crypto.
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Interface with IFF/SIF
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Provides overlay for Aircraft/Ship detection of applicable modes.
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TWS
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will track and label up to 32 simultaneous targets on the PPI, provide a track line to determine target bearing, range, heading anf velocity. Automatically transferred to OASIS TDP for display, modification and transmission.
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What component of the APS 135 contains the IMU?
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Antenna
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This mode is for long range surface search with sea-clutter supression and target brightness enhancement.
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Search Mode
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Aps-137 has a maximum range of?
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200 NM
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The APS-137 has a maxiumum range of ___ NM in Periscope mode?
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32 NM
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This mode is used for moderately low altitude (3,000 ft or lower) and has a max display range of 32NM.
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Periscope
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Which component is responsible for antenna tilt drive control?
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Programmer Power Supply
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The primary mode for weather and coastline mapping with the APS-137 is?
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Navigate
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MOSA calls are required every ___ miles between 30-10 NM and every ____ NM below 10 NM.
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5,1
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To prevent internal damage, system power shall be set to ____ prior to all power shifts.
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OFF
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Which component of the APX-76 contains the coding and decoding circuits that enable the interrogation cycle to be completed?
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Synchronizer
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APX-76 mode/code returns from interrogated station indicate:
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Identification, Position in azimuth, and range from interrogating A/C.
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What is the warm-up time for the APX-76 system?
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1 minute
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What does the push to test button on the APX-76 R/T do?
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* Checks for proper operation of the SIF by illuminating the fault light on the SIF control box.
* Creates an artificial fault to activate the 3 fault indicator flags on the R/T. |
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APX-76 R/T GTC and RCVR GATE switches are normally placed in the ____ position.
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OFF
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Long range display spacing on the APX-76 is used for radar ranges of ________?
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Greater than 50 NM.
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Short range display spacing on the APX-76 is used for radar ranges of ________?
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Under 50 NM.
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The inclinometer indicates ______ and is used in conjunction with the radar antenna tilt control.
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Aircraft Deck Angle.
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WARNING: Do not operate the APS-137 RADAR on the deck unless:
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An observer is in the flight station
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Which component of the APS-137 performs TWS?
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RSCI
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The APX-76 Fault light illuminates during challenge when a malfunction has been detected by the bite circuits in the ______
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Synchronizer, R/T Unit or the KIR-1C/TSEC Computer
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Stand-off ranges for the APS-137 RADAR when operating on the deck are ____ ft. for personnel and _____ ft. for fuel trucks and HERO.
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250/250
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Five operating modes of the APX-72 IFF:
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1 & 2: IFF modes
3: civil Mode A C: automatic altitude reporting 4: Secure IFF |
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The Mode 2 selector switches allow selection of _____ Mode 2 codes.
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4,096
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Transponder Test Set (APX-72 IFF)
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Provides self-test and monitor functions for Modes 1,2,3/A and C.
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IFF Caution Light (Flight Station) indicates that:
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Mode 4 codes have zeroized
The self-test of the KIT-1C has detected a faulty computer or The transponder is not replying to proper Mode 4 interrogations |
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The R/T push-to-test button creates:
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an artificial fault to activate the three fault indicator flags on the R/T unit.
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The TEST selection on the SIF control panel allows:
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interrogation and display of own aircraft APX-72 transponder.
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APX-76 CAUTIONS:
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Do not select a new power output position with power applied to the APX-76 system.
Ensure the reveiver-transmitter rack-mounted blower is operating. |
