OPERATION AND MAINTENANCE TRAINING COURSE DOPPLER VHF OMNIDIRECTIONAL

OPERATION AND MAINTENANCE TRAINING COURSE DOPPLER VHF OMNIDIRECTIONAL RANGE BEACON (DVOR) SELEX Sistemi Integrati Inc. 11300 West 89 th Street Overland Park, KS 66214 USA T: 1 -913 -495 -2600 This document contains proprietary information and such information may not be disclosed to others for any purpose nor used for manufacturing purposes without written permission from SELEX Sistemi Integrati Inc 1 Rev -, December 28, 2007

COURSE OBJECTIVES • Name and locate each major assembly of the 1150 DVOR Equipment, explain the function of each, and explain its contribution to the overall signal flow. • Operate and align the DVOR equipment in accordance with the manufacturer’s specifications. • Recognize out of tolerance conditions and troubleshoot the DVOR equipment to the module, subassembly or Line Replaceable Unit (LRU) level. • Verify and perform hardware and software configuration procedures. • Upgrade operating software of the 1150 DVOR equipment. • Perform ground check procedures and provide ground support for flight checks. This document contains proprietary information and such information may not be disclosed to others for any purpose nor used for manufacturing purposes without written permission from SELEX Sistemi Integrati Inc 2 Rev -, December 28, 2007

LECTURE MODEL 1150 DVOR IN CONTEXT OF GENERAL DVOR THEORY This document contains proprietary information and such information may not be disclosed to others for any purpose nor used for manufacturing purposes without written permission from SELEX Sistemi Integrati Inc 3 Rev -, December 28, 2007

OBJECTIVES OF MODEL 1150 DVOR IN CONTEXT OF GENERAL DVOR THEORY • RF spectrum as seen by the aircraft • The phase relationship of the AM and FM components • How Model 1150 Doppler VOR produces each component • The characteristics of the CSB output from the transmitter • The characteristics of each sideband output from the transmitter This document contains proprietary information and such information may not be disclosed to others for any purpose nor used for manufacturing purposes without written permission from SELEX Sistemi Integrati Inc 4 Rev -, December 28, 2007

TYPICAL INSTALLATION OF DVOR STATION Ring of 48 Sideband Antennas The Counterpoise is used for clean reflection of RF pattern Carrier Antenna in the center of the ring The Transmitter is located in the shelter This document contains proprietary information and such information may not be disclosed to others for any purpose nor used for manufacturing purposes without written permission from SELEX Sistemi Integrati Inc 5 Rev -, December 28, 2007

TYPICAL ON-BOARD INDICATORS The “bug” turns the bearing to select the direction the pilot wants to be traveling when he arrives at the VOR. In this case the pilot wants to fly North toward the VOR from the South. He would be on radial 180. VOR ONLY If he is directly south of the VOR, then the needle is centered. Bearing A flag shows that he is flying north “To” the VOR. (The “From” flag would not be visible in this case. ) “bug” This document contains proprietary information and such information may not be disclosed to others for any purpose nor used for manufacturing purposes without written permission from SELEX Sistemi Integrati Inc After he passes over the VOR, the “To” flag disappears and the “From” flag appears. 6 Rev -, December 28, 2007

TYPICAL ON-BOARD INDICATORS VOR AND ILS A VOR Deviation Indicator can be combined with an ILS indicator. When the Localizer is selected, then the vertical needle shows Localizer information instead of VOR information. This document contains proprietary information and such information may not be disclosed to others for any purpose nor used for manufacturing purposes without written permission from SELEX Sistemi Integrati Inc 7 Rev -, December 28, 2007

COMPARING THE TWO 30 Hz SIGNALS AT DIFFERENT AZIMUTHS AM FM NORTH EAST SOUTH WEST 0 DEG AM AND FM SIGNALS ARE IN PHASE 90 DEG 180 DEG 270 DEG RADIAL AM LAGS FM BY 90 DEG AM LAGS FM BY 180 DEG AM LAGS FM BY 270 DEG This document contains proprietary information and such information may not be disclosed to others for any purpose nor used for manufacturing purposes without written permission from SELEX Sistemi Integrati Inc 8 Rev -, December 28, 2007

Example AM FM NORTH W E S T VOR AM AM FM FM AM FM SOUTH This document contains proprietary information and such information may not be disclosed to others for any purpose nor used for manufacturing purposes without written permission from SELEX Sistemi Integrati Inc 9 Rev -, December 28, 2007 E A S T

COMPOSITE VOR SIGNAL 30 HZ COMPONENT 10440 9960 HZ COMPONENT 9960 9480 THE 9960 COMPONENT VARIES ITS FREQUENCY THROUGHOUT ITS CYCLE This document contains proprietary information and such information may not be disclosed to others for any purpose nor used for manufacturing purposes without written permission from SELEX Sistemi Integrati Inc 10 Rev -, December 28, 2007

SOURCE OF THE AM COMPONENT RF MODULATED BY 30 Hz AUDIO FROM DETECTED RF This document contains proprietary information and such information may not be disclosed to others for any purpose nor used for manufacturing purposes without written permission from SELEX Sistemi Integrati Inc 11 Rev -, December 28, 2007

SOURCE OF 30 HZ FM SIGNAL 9960 Hz AUDIO WITH 30 Hz FREQUENCY MODULATION 30 Hz AUDIO FROM DISCRIMINATED 9960 AUDIO This document contains proprietary information and such information may not be disclosed to others for any purpose nor used for manufacturing purposes without written permission from SELEX Sistemi Integrati Inc 12 Rev -, December 28, 2007

VOR SIGNAL FROM PILOT’S POINT OF VIEW (ON SPECTRUM ANALYZER) This document contains proprietary information and such information may not be disclosed to others for any purpose nor used for manufacturing purposes without written permission from SELEX Sistemi Integrati Inc 13 Rev -, December 28, 2007

ROTATION OF SIDEBAND ANTENNAS USB 3 2 1 25 26 27 LSB This document contains proprietary information and such information may not be disclosed to others for any purpose nor used for manufacturing purposes without written permission from SELEX Sistemi Integrati Inc 14 Rev -, December 28, 2007

A portion of the 9960 Hz signal is formed by mixing the Carrier with the USB in space. If the sideband antenna were stationary, then the 9960 Hz signal would not vary in frequency. USB As the sideband antenna rotates, it approaches or departs the receiver at high velocity. This document contains proprietary information and such information may not be disclosed to others for any purpose nor used for manufacturing purposes without written permission from SELEX Sistemi Integrati Inc 15 Rev -, December 28, 2007 The Doppler Effect causes the 9960 Hz to deviate above and below its center frequency.

The Lower Sideband adds amplitude to the 9960 Hz signal. USB LSB This document contains proprietary information and such information may not be disclosed to others for any purpose nor used for manufacturing purposes without written permission from SELEX Sistemi Integrati Inc 16 Rev -, December 28, 2007

BLENDING OF TWO LOWER SIDEBAND SIGNALS IN ADJACENT ANTENNAS 1 ODD ANT 48 3 SIDEBAND 1 (SB 3) 4 2 SIDEBAND 2 (SB 4) EVEN ANT SUM IN SPACE This document contains proprietary information and such information may not be disclosed to others for any purpose nor used for manufacturing purposes without written permission from SELEX Sistemi Integrati Inc 17 Rev -, December 28, 2007

FIVE RF OUTPUTS FROM THE TRANSMITTER CABINET 1. CSB – RF at FC, amplitude modulated by 30 Hz + 1020 Hz + VOICE 2. SIDEBAND 1 – RF at FC-9960 Hz, amplitude modulated by rectified sine wave 3. SIDEBAND 2 – RF at FC-9960 Hz, amplitude modulated by rectified cosine wave 4. SIDEBAND 3 – RF at FC+9960 Hz, amplitude modulated by rectified sine wave 5. SIDEBAND 4 – RF at FC+9960 Hz, amplitude modulated by rectified cosine wave This document contains proprietary information and such information may not be disclosed to others for any purpose nor used for manufacturing purposes without written permission from SELEX Sistemi Integrati Inc 18 Rev -, December 28, 2007

LECTURE ALFORD LOOP ANTENNA This document contains proprietary information and such information may not be disclosed to others for any purpose nor used for manufacturing purposes without written permission from SELEX Sistemi Integrati Inc 19 Rev -, December 28, 2007

OBJECTIVES OF ALFORD LOOP ANTENNA LECTURE • The physical makeup of the Alford Loop antennas (Carrier and Sideband) • The basic propagation theory of the Alford Loop antenna • Tuning points of the Alford Loop antenna This document contains proprietary information and such information may not be disclosed to others for any purpose nor used for manufacturing purposes without written permission from SELEX Sistemi Integrati Inc 20 Rev -, December 28, 2007

TOP VIEW OF CARRIER ANTENNA Hole for DME antenna mast This document contains proprietary information and such information may not be disclosed to others for any purpose nor used for manufacturing purposes without written permission from SELEX Sistemi Integrati Inc 21 Rev -, December 28, 2007

TOP VIEW OF SIDEBAND ANTENNA This document contains proprietary information and such information may not be disclosed to others for any purpose nor used for manufacturing purposes without written permission from SELEX Sistemi Integrati Inc 22 Rev -, December 28, 2007

IMPEDANCE MATCHING NETWORK This document contains proprietary information and such information may not be disclosed to others for any purpose nor used for manufacturing purposes without written permission from SELEX Sistemi Integrati Inc 23 Rev -, December 28, 2007

PHYSICAL MAKEUP OF THE ALFOR LOOP ANTENNA THE ALFORD LOOP IS TWO ORTHAGONAL FOLDED DIPOLES. ONE DIPOLE IS HIGHLIGHTED HERE. This document contains proprietary information and such information may not be disclosed to others for any purpose nor used for manufacturing purposes without written permission from SELEX Sistemi Integrati Inc 24 Rev -, December 28, 2007

PHYSICAL MAKEUP OF THE ALFOR LOOP ANTENNA THE OTHER DIPOLE IS HIGHLIGHTED HERE. This document contains proprietary information and such information may not be disclosed to others for any purpose nor used for manufacturing purposes without written permission from SELEX Sistemi Integrati Inc 25 Rev -, December 28, 2007

REMAINING CURRENTS WITH INTERNAL CURRENTS CANCELLED CONSIDER A MOMENT IN TIME. CURRENT FLOWS IN THE PICTURED DIRECTIONS. ASSUMES 180 DEGREES OF PHASE DIFFERENCE BETWEEN THE TWO FOLDED DIPOLES. THE INTERNAL CURRENTS PRODUCE FIELDS OF OPPOSITE AND EQUAL FIELD STRENGTH. THEY CANCEL OUT EACH OTHER, LEAVING ONLY THE FIELDS GENERATED BY THE EXTERNAL ANTENNA SURFACES THE RESULTING RF PATTERN IS OMNIDIRECTIONAL This document contains proprietary information and such information may not be disclosed to others for any purpose nor used for manufacturing purposes without written permission from SELEX Sistemi Integrati Inc 26 Rev -, December 28, 2007

LECTURE TRANSMITTER CABINET BLOCK DIAGRAM This document contains proprietary information and such information may not be disclosed to others for any purpose nor used for manufacturing purposes without written permission from SELEX Sistemi Integrati Inc 27 Rev -, December 28, 2007

OBJECTIVES OF TRANSMITTER CABINET BLOCK DIAGRAM LECTURE • The main physical components of the 1150 DVOR Transmitter Cabinet • The primary function of each module • The flow of RF, Audio, and Control signals This document contains proprietary information and such information may not be disclosed to others for any purpose nor used for manufacturing purposes without written permission from SELEX Sistemi Integrati Inc 28 Rev -, December 28, 2007

MAIN COMPONENTS OF TRANSMITTER CABINET TRANSMITTER 1 RMS TRANSMITTER 2 This document contains proprietary information and such information may not be disclosed to others for any purpose nor used for manufacturing purposes without written permission from SELEX Sistemi Integrati Inc 29 Rev -, December 28, 2007

MONITORING CSB GENERATOR AUDIO GENERATOR SIDEBAND GENERATION RMS POWER SUPPLIES This document contains proprietary information and such information may not be disclosed to others for any purpose nor used for manufacturing purposes without written permission from SELEX Sistemi Integrati Inc 30 Rev -, December 28, 2007

CSB GENERATION Synthesizer produces CW RF Modulated Carrier (CSB) to the antenna Audio Generator adds Audio LPF eliminates harmonics Directional Coupler provides samples for Power and VSWR measurements RF Monitor detects samples and provides audio to the Audio Generator for measurement This document contains proprietary information and such information may not be disclosed to others for any purpose nor used for manufacturing purposes without written permission from SELEX Sistemi Integrati Inc 31 Rev -, December 28, 2007

Sideband 1 SBO: CW RF at LSB frequency, modulated 100% by rectified 360 Hz sine wave 360 Sine wave + Sine bi-phase = Rectified sine wave, which is applied to CW RF to produce SBO This document contains proprietary information and such information may not be disclosed to others for any purpose nor used for manufacturing purposes without written permission from SELEX Sistemi Integrati Inc 32 Rev -, December 28, 2007

Sideband 2 SBO: CW RF at LSB frequency, modulated 100% by rectified 360 Hz cosine wave 360 Cosine wave + Cosine bi-phase = Rectified Cosine wave, which is applied to CW RF to produce SBO This document contains proprietary information and such information may not be disclosed to others for any purpose nor used for manufacturing purposes without written permission from SELEX Sistemi Integrati Inc 33 Rev -, December 28, 2007

Sideband 3 SBO: CW RF at USB frequency, modulated 100% by rectified 360 Hz sine wave 360 Sine wave + Sine bi-phase = Rectified sine wave, which is applied to CW RF to produce SBO This document contains proprietary information and such information may not be disclosed to others for any purpose nor used for manufacturing purposes without written permission from SELEX Sistemi Integrati Inc 34 Rev -, December 28, 2007

Sideband 4 SBO: CW RF at USB frequency, modulated 100% by rectified 360 Hz cosine wave 360 Cosine wave + Cosine bi-phase = Rectified cosine wave, which is applied to CW RF to produce SBO This document contains proprietary information and such information may not be disclosed to others for any purpose nor used for manufacturing purposes without written permission from SELEX Sistemi Integrati Inc 35 Rev -, December 28, 2007

Power Supplies BCPS 1 powers Transmitter 1 43 Vdc for Power Amplifier Increases to 48 Vdc if modulation is above 43%. 28 Vdc for remaining circuits. Both BCPSes manage the charge on the single set of batteries. This document contains proprietary information and such information may not be disclosed to others for any purpose nor used for manufacturing purposes without written permission from SELEX Sistemi Integrati Inc 36 A second set of batteries may be connected in parallel. Rev -, December 28, 2007

Radiated RF is received by the Yagi antenna The RF is applied to two detectors Detected RF (audio) is applied to the monitors This document contains proprietary information and such information may not be disclosed to others for any purpose nor used for manufacturing purposes without written permission from SELEX Sistemi Integrati Inc 37 Rev -, December 28, 2007

Detected RF (audio) from the dummy load Standby signal is analyzed by both monitors. This document contains proprietary information and such information may not be disclosed to others for any purpose nor used for manufacturing purposes without written permission from SELEX Sistemi Integrati Inc Standby monitoring is only for power levels of CSB and SBO. 38 Rev -, December 28, 2007

Identification Synchronization to the DME This document contains proprietary information and such information may not be disclosed to others for any purpose nor used for manufacturing purposes without written permission from SELEX Sistemi Integrati Inc 39 Rev -, December 28, 2007

LECTURE PMDT OPERATION This document contains proprietary information and such information may not be disclosed to others for any purpose nor used for manufacturing purposes without written permission from SELEX Sistemi Integrati Inc 40 Rev -, December 28, 2007

Objectives of PMDT Operation Lecture • • How to obtain access to the PMDT software The general layout of the PMDT screen The use of Print and Copy icons Memory management This document contains proprietary information and such information may not be disclosed to others for any purpose nor used for manufacturing purposes without written permission from SELEX Sistemi Integrati Inc 41 Rev -, December 28, 2007

SEC 3 THREE Double-click PMDT icon This document contains proprietary information and such information may not be disclosed to others for any purpose nor used for manufacturing purposes without written permission from SELEX Sistemi Integrati Inc Log in with default username and password 42 Rev -, December 28, 2007

Four levels of security: • Level 1, only view data • Level 2, only basic controls (On, Off, Transfer, Reset) • Level 3, full control and configuration • Level 4, same as level 3 but adds capability to create usernames and manage other users’ passwords This document contains proprietary information and such information may not be disclosed to others for any purpose nor used for manufacturing purposes without written permission from SELEX Sistemi Integrati Inc 43 Rev -, December 28, 2007

Sidebar – always visible if logged in. Info and controls of the Sidebar: • • • This document contains proprietary information and such information may not be disclosed to others for any purpose nor used for manufacturing purposes without written permission from SELEX Sistemi Integrati Inc Whethere is a maintenance alert Whether in local mode (must be in local mode to make changes) Status and connection of each transmitter. These buttons allow for control. Status of each monitor. Bypass control. Measurements of the integral monitored parameters. Status of DMEs (not configured on this screen shot) 44 Rev -, December 28, 2007

Copy data from this page to the clipboard. The data can be pasted to other programs (Word Pad, Word, Excel, email, etc. ) Print data from this page to a printer connected to this PC. This document contains proprietary information and such information may not be disclosed to others for any purpose nor used for manufacturing purposes without written permission from SELEX Sistemi Integrati Inc 45 Rev -, December 28, 2007

PMDT Overview Memory Management Printer connected to the PMDT Laptop PMDT PC PC storage device Transmitter Cabinet System, Configuration, Save System, Configuration, Load System, Print Active RAM – These values are the ones actually used by the DME RESET (F 8) RMS, Config_Backup RMS, Config_Restore APPLY (F 7) Screen RAM – These values are the ones displayed on the screen This document contains proprietary information and such information may not be disclosed to others for any purpose nor used for manufacturing purposes without written permission from SELEX Sistemi Integrati Inc 46 Rev -, December 28, 2007 Nonvolatile Backup Memory

Refer to the manual or PMDT software, and examine the following screens: • RMS • Status and Data – Shows condition and measurements of various parameters. These DO NOT include the monitored parameters. • Configuration – Allows the maintenance personnel to select the appropriate operational settings. • A/D Limits defines the “Pre-alarm” limits for the power supplies • Logs – maintains a record of various events. Each tab keeps about 100 records, and rotates the oldest ones off as new ones occur. • Commands – refer to the manual for the definition. • DME Commands refers to a co-located DME; this function gives DME remote control even if the DME has no RMM connection. This document contains proprietary information and such information may not be disclosed to others for any purpose nor used for manufacturing purposes without written permission from SELEX Sistemi Integrati Inc 47 Rev -, December 28, 2007

• TRANSMITTERS • Data – Shows measurements of various RF parameters. • Configuration • Nominal – Defines the values desired • Offsets and Scale Factors – to calibrate the specific transmitter to produce the Nominal values. • Commands • Ident commands allow the user to force or remove ident for test purposes This document contains proprietary information and such information may not be disclosed to others for any purpose nor used for manufacturing purposes without written permission from SELEX Sistemi Integrati Inc 48 Rev -, December 28, 2007

• Monitors • Data: analysis of signal received by monitor antenna • Integrity – Shows the values and limits of the monitored parameters • Ground Check – Allows technician to run an automatic or semiautomatic ground check, and displays the results. • Certification Test Results and Test Data – Allows the technician to run the listed test, and displays the results. • Standby – displays some of the Transmitters Data fields for the transmitter connected to the dummy load. • Offsets and Scale Factors • Test Generator/Certification – calibrates the Monitor CCA itself • Field Detector – adjusts for errors in the detected signal This document contains proprietary information and such information may not be disclosed to others for any purpose nor used for manufacturing purposes without written permission from SELEX Sistemi Integrati Inc 49 Rev -, December 28, 2007

• Diagnostics • Power-up results – shows the results of the digital circuitry test performed at the time of power up. • Fault Isolation – Auto diagnostic software. This document contains proprietary information and such information may not be disclosed to others for any purpose nor used for manufacturing purposes without written permission from SELEX Sistemi Integrati Inc 50 Rev -, December 28, 2007

LECTURE HARDWARE CONFIGURATION This document contains proprietary information and such information may not be disclosed to others for any purpose nor used for manufacturing purposes without written permission from SELEX Sistemi Integrati Inc 51 Rev -, December 28, 2007

Pressing this button causes a window to appear with the proper dip switch settings to select the frequency in the window. This document contains proprietary information and such information may not be disclosed to others for any purpose nor used for manufacturing purposes without written permission from SELEX Sistemi Integrati Inc 52 Rev -, December 28, 2007

Dip switch settings for frequency selection This document contains proprietary information and such information may not be disclosed to others for any purpose nor used for manufacturing purposes without written permission from SELEX Sistemi Integrati Inc 53 Rev -, December 28, 2007

Audio Generator CCA Hardware configuration • • • E 1 – to enable the watchdog, jumper 1 -2 There is no E 2 E 3 –Jumper 3 -4 to disable DVOR ground check. Jumper 1 -2 to enable DVOR ground check. E 4 – For DVOR application, jumper 3 -4 E 5 – For DVOR application, jumper 3 -4. Instructor will point out the jumpers at this time. Serial Interface Hardware configuration • Switch S 1 • Switches 1, 3, 5, and 8 are set to the ON position • Switches 2, 4, 6, and 7 are set to the OFF position This document contains proprietary information and such information may not be disclosed to others for any purpose nor used for manufacturing purposes without written permission from SELEX Sistemi Integrati Inc 54 Rev -, December 28, 2007

Monitor CCA Hardware configuration • Do NOT jumper E 1 to E 2. Used only during design. • Do NOT jumper E 3 to E 4. Used only during Depot maintenance. • E 5, E 6 and E 7 are calibration jumpers set in factory. Do not change them. Instructor will point out the jumpers at this time. 1 A 9 Modem CCA Hardware configuration • • JP 1 set to INT 1 position JP 2 is set up during installation, depending on which dialup modem is used, the internal one, or an external one. Instructor will point out the jumpers at this time. Software Re-Installation procedures Instructor will demonstrate the removal and replacement of software chips on a module. This document contains proprietary information and such information may not be disclosed to others for any purpose nor used for manufacturing purposes without written permission from SELEX Sistemi Integrati Inc 55 Rev -, December 28, 2007

LECTURE CSB TRANSMITTER This document contains proprietary information and such information may not be disclosed to others for any purpose nor used for manufacturing purposes without written permission from SELEX Sistemi Integrati Inc 56 Rev -, December 28, 2007

Objectives of CSB Transmitter Lecture • The inputs and outputs of the Frequency Synthesizer and CSB Power Amp • Physical setting and alignment procedures for the Frequency Generator and CSB Power Amp • Test Points of Frequency Synthesizer and CSB Power Amp • Jumper configurations of Frequency Synthesizer and CSB Power Amp • Signal generation and flow of the CSB This document contains proprietary information and such information may not be disclosed to others for any purpose nor used for manufacturing purposes without written permission from SELEX Sistemi Integrati Inc 57 Rev -, December 28, 2007

This document contains proprietary information and such information may not be disclosed to others for any purpose nor used for manufacturing purposes without written permission from SELEX Sistemi Integrati Inc 58 Rev -, December 28, 2007

Table 3‑ 9. Synthesizer CCA (1 A 4, 1 A 20) Controls and Indicators TP 1 Lower Sideband Quadrature Signal. When Sidebands 1 and 2 (1 A 4, 1 A 21) are in phase and equal amplitude this signal is a triangular waveform. TP 2 Upper Sideband Quadrature Signal. When Sidebands 3 and 4 (1 A 5, 1 A 22) are in phase and equal amplitude this signal is a triangular waveform. TP 3 Carrier Phase Error Voltage (0 V için R 81 ile ayarla) TP 4 Carrier Phase Control Voltage (2 – 9 V arası) TP 5 DVOR Sideband Manual Phase Control Voltage TP 6 This test point is available for scope or voltmeter ground Carrier sample for test purposes This document contains proprietary information and such information may not be disclosed to others for any purpose nor used for manufacturing purposes without written permission from SELEX Sistemi Integrati Inc 59 Rev -, December 28, 2007

Overtemp (70 C) protection – thermistor mounted on Q 5, Q 6 When the percent modulation is programmed to be more than 43%, supply voltage is increased to 48 V Percent modulation stabilization Built-in power out stability and VSWR protection. In addition, there is VSWR protection by the Audio Generator using the forward and reverse power feedback from the RF Monitor This document contains proprietary information and such information may not be disclosed to others for any purpose nor used for manufacturing purposes without written permission from SELEX Sistemi Integrati Inc 60 Rev -, December 28, 2007

Low-Pass Filter Assembly and Directional Coupler The LPA Filters out harmonics Feedback for phase and frequency lock Reflected port to measure VSWR Forward port to measure transmitted power Carrier sample for test point This document contains proprietary information and such information may not be disclosed to others for any purpose nor used for manufacturing purposes without written permission from SELEX Sistemi Integrati Inc 61 Rev -, December 28, 2007

LECTURE AUDIO GENERATOR This document contains proprietary information and such information may not be disclosed to others for any purpose nor used for manufacturing purposes without written permission from SELEX Sistemi Integrati Inc 62 Rev -, December 28, 2007

Objectives of Audio Generator Lecture • The inputs and outputs of the Audio Generator This document contains proprietary information and such information may not be disclosed to others for any purpose nor used for manufacturing purposes without written permission from SELEX Sistemi Integrati Inc 63 Rev -, December 28, 2007

Composite output of the Audio Generator Components of the Composite Audio signal: • 30 Hz (30 %) • Ident (6%) during the time ident is being sent • Voice (5%) if selected and there is an input • DC component that is proportional to the carrier power This document contains proprietary information and such information may not be disclosed to others for any purpose nor used for manufacturing purposes without written permission from SELEX Sistemi Integrati Inc 64 Rev -, December 28, 2007

Sideband audio outputs of the Audio Generator • Sine wave @ 360 Hz • This sine wave will be rectified in the SB Generator, so there will be 720 “humps” per second. • Sideband 1 and Sideband 2 are 90 degrees (of the 360 Hz signal) out of phase, so the “humps” are 180 degrees out of phase This document contains proprietary information and such information may not be disclosed to others for any purpose nor used for manufacturing purposes without written permission from SELEX Sistemi Integrati Inc 65 Rev -, December 28, 2007

Sideband biphase outputs of the Audio Generator • Square wave • Each time the sideband signal reaches zero, the bi-phase changes state • The bi-phase is used in the Sideband Generator to rectify the 360 Hz sine wave. This document contains proprietary information and such information may not be disclosed to others for any purpose nor used for manufacturing purposes without written permission from SELEX Sistemi Integrati Inc 66 Rev -, December 28, 2007

Sideband phasor outputs of the Audio Generator SB 2/4 phase is fixed – it cannot be changed Sideband Phase DC levels – DC voltage set by the operator in PMDT, to adjust the phase of the sidebands to each other (SB 1 to SB 2, and SB 3 to SB 4). This document contains proprietary information and such information may not be disclosed to others for any purpose nor used for manufacturing purposes without written permission from SELEX Sistemi Integrati Inc 67 Rev -, December 28, 2007

Commutator switching outputs of the Audio Generator Switching bus to commutator – creates the 30 Hz FM sine wave This document contains proprietary information and such information may not be disclosed to others for any purpose nor used for manufacturing purposes without written permission from SELEX Sistemi Integrati Inc 68 Rev -, December 28, 2007

Audio Generator serial communication to RMS DC and audio levels from the RF Monitor. Data to RMS for use in PMDT – measurements of audio and dc analog voltages from the RF Monitor. Voice from automated system (ATIS) or microphone This document contains proprietary information and such information may not be disclosed to others for any purpose nor used for manufacturing purposes without written permission from SELEX Sistemi Integrati Inc 69 Rev -, December 28, 2007

LECTURE SIDEBAND GENERATION This document contains proprietary information and such information may not be disclosed to others for any purpose nor used for manufacturing purposes without written permission from SELEX Sistemi Integrati Inc 70 Rev -, December 28, 2007

Objectives of Sideband Generation Lecture • The inputs and outputs of the Sideband Generator • Field alignment procedures for the Sideband Generator • Function of the Isolators This document contains proprietary information and such information may not be disclosed to others for any purpose nor used for manufacturing purposes without written permission from SELEX Sistemi Integrati Inc 71 Rev -, December 28, 2007

Sideband 1 720 “humps”/sec CW RF @ Carrier freq Minus 10 KHz This document contains proprietary information and such information may not be disclosed to others for any purpose nor used for manufacturing purposes without written permission from SELEX Sistemi Integrati Inc 72 Rev -, December 28, 2007

Sideband 2 CW RF @ Carrier freq Minus 10 KHz 720 “humps”/sec This document contains proprietary information and such information may not be disclosed to others for any purpose nor used for manufacturing purposes without written permission from SELEX Sistemi Integrati Inc 73 Rev -, December 28, 2007

Sideband 1 (or 3) Sideband 2 (or 4) This document contains proprietary information and such information may not be disclosed to others for any purpose nor used for manufacturing purposes without written permission from SELEX Sistemi Integrati Inc 74 Rev -, December 28, 2007

Sideband Generator Test Points Table 3‑ 10. Sideband Generator (1 A 5, 1 A 6, 1 A 21, 1 A 22) Controls and Indicators TP 1 This test point is the Sideband 1 (1 A 5, 1 A 21) or Sideband 3 (1 A 6, 1 A 22) Dynamic Phase Control Voltage. TP 2 This test point is the Sideband 1 (1 A 5, 1 A 21) or Sideband 3 (1 A 6, 1 A 22) Sideband Manual Phase Control Voltage. This is a DC voltage representing the phaser control voltage. TP 3 This test point is the Sideband 1 (1 A 5, 1 A 21) or Sideband 3 (1 A 6, 1 A 22) Mean Phase Control Voltage. This is a DC voltage representing the mean (slow) phaser control voltage. TP 4 This test point is the Sideband 1 (1 A 5, 1 A 21) or Sideband 3 (1 A 6, 1 A 22 Mean Phase Error Voltage. This is a DC voltage representing the mean (slow) error control voltage. If the control loop is locked this voltage should be nearly 0 volts. TP 5 This test point is the detected output of the Sideband 1 (1 A 5, 1 A 21) or Sideband 3 (1 A 6, 1 A 22) output. This signal is a rectified 360 Hz waveform in DVOR mode. This document contains proprietary information and such information may not be disclosed to others for any purpose nor used for manufacturing purposes without written permission from SELEX Sistemi Integrati Inc 75 Rev -, December 28, 2007

Sideband Generator Test Points Table 3‑ 10. Sideband Generator (1 A 5, 1 A 6, 1 A 21, 1 A 22) Controls and Indicators TP 6 This test point is the detected output of the Sideband 2 (1 A 5, 1 A 21) or Sideband 4 (1 A 6, 1 A 22) output. This signal is a rectified 360 Hz waveform in DVOR mode. TP 7 This test point is the Sideband 2 (1 A 5, 1 A 21) or Sideband 4 (1 A 6, 1 A 22 Mean Phase Error Voltage. This is a DC voltage representing the mean (slow) error control voltage. If the control loop is locked this voltage should be nearly 0 volts. TP 8 This test point is the Sideband 2 (1 A 5, 1 A 21) or Sideband 4 (1 A 6, 1 A 22 Mean Phase Control Voltage. This is a DC voltage representing the mean (slow) phaser control voltage. TP 9 This test point is the Sideband 2 (1 A 5, 1 A 21) or Sideband 4 (1 A 6, 1 A 22 Sideband Manual Phase Control Voltage. This is a DC voltage representing the phaser control voltage. TP 10 This test point is the Sideband 2 (1 A 5, 1 A 21) or Sideband 4 (1 A 6, 1 A 22) Dynamic Phase Control Voltage. This document contains proprietary information and such information may not be disclosed to others for any purpose nor used for manufacturing purposes without written permission from SELEX Sistemi Integrati Inc 76 Rev -, December 28, 2007

Sideband Generator Test Point 1/10 TP 1 (TP 10) Smooth transition No noise on the rounded part (no spurious oscillations) This document contains proprietary information and such information may not be disclosed to others for any purpose nor used for manufacturing purposes without written permission from SELEX Sistemi Integrati Inc 77 Rev -, December 28, 2007

Sideband Frequency and Phase lock This document contains proprietary information and such information may not be disclosed to others for any purpose nor used for manufacturing purposes without written permission from SELEX Sistemi Integrati Inc 78 Rev -, December 28, 2007

Commutator This document contains proprietary information and such information may not be disclosed to others for any purpose nor used for manufacturing purposes without written permission from SELEX Sistemi Integrati Inc 79 Rev -, December 28, 2007

Isolators are used to redirect reflected energy to a detector circuit to monitor VSWR of sideband antennas This document contains proprietary information and such information may not be disclosed to others for any purpose nor used for manufacturing purposes without written permission from SELEX Sistemi Integrati Inc 80 Rev -, December 28, 2007

LECTURE PHASING CONSIDERATIONS This document contains proprietary information and such information may not be disclosed to others for any purpose nor used for manufacturing purposes without written permission from SELEX Sistemi Integrati Inc 81 Rev -, December 28, 2007

Consider the electrical length of each path SYNTH XTAL PLL LPF, DIR CPLR, RELAY POWER AMP PLL All the RF signals originate from this point. SIDEBAND GENERATOR COMMUTATOR PHASER SIDEBAND GENERATOR PHASER The CSB signal follows this path This document contains proprietary information and such information may not be disclosed to others for any purpose nor used for manufacturing purposes without written permission from SELEX Sistemi Integrati Inc 82 Rev -, December 28, 2007

Sideband 1 follows this path SYNTH XTAL PLL POWER AMP LPF, DIR CPLR, RELAY PLL SIDEBAND GENERATOR COMMUTATOR PHASER SIDEBAND GENERATOR PHASER This document contains proprietary information and such information may not be disclosed to others for any purpose nor used for manufacturing purposes without written permission from SELEX Sistemi Integrati Inc 83 Rev -, December 28, 2007

Sideband 2 follows this path SYNTH XTAL PLL POWER AMP LPF, DIR CPLR, RELAY PLL SIDEBAND GENERATOR COMMUTATOR PHASER SIDEBAND GENERATOR PHASER This document contains proprietary information and such information may not be disclosed to others for any purpose nor used for manufacturing purposes without written permission from SELEX Sistemi Integrati Inc 84 Rev -, December 28, 2007

Sideband 3 follows this path SYNTH XTAL PLL POWER AMP LPF, DIR CPLR, RELAY PLL SIDEBAND GENERATOR COMMUTATOR PHASER SIDEBAND GENERATOR PHASER This document contains proprietary information and such information may not be disclosed to others for any purpose nor used for manufacturing purposes without written permission from SELEX Sistemi Integrati Inc 85 Rev -, December 28, 2007

Sideband 4 follows this path SYNTH XTAL PLL POWER AMP LPF, DIR CPLR, RELAY PLL SIDEBAND GENERATOR COMMUTATOR PHASER SIDEBAND GENERATOR PHASER This document contains proprietary information and such information may not be disclosed to others for any purpose nor used for manufacturing purposes without written permission from SELEX Sistemi Integrati Inc 86 Rev -, December 28, 2007

All five signals must have the same phase in space SYNTH XTAL PLL POWER AMP LPF, DIR CPLR, RELAY PLL SIDEBAND GENERATOR COMMUTATOR PHASER SIDEBAND GENERATOR PHASER This document contains proprietary information and such information may not be disclosed to others for any purpose nor used for manufacturing purposes without written permission from SELEX Sistemi Integrati Inc 87 Rev -, December 28, 2007

Sidebands 1 and 2 are the same frequency SYNTH XTAL PLL POWER AMP LPF, DIR CPLR, RELAY PLL SIDEBAND GENERATOR COMMUTATOR PHASER SIDEBAND GENERATOR PHASER Using the PMDT, it is possible to adjust the phase of Sideband 1 to make it equal to Sideband 2. This document contains proprietary information and such information may not be disclosed to others for any purpose nor used for manufacturing purposes without written permission from SELEX Sistemi Integrati Inc 88 Rev -, December 28, 2007

Sidebands 3 and 4 are the same frequency SYNTH XTAL PLL POWER AMP LPF, DIR CPLR, RELAY PLL SIDEBAND GENERATOR COMMUTATOR PHASER SIDEBAND GENERATOR PHASER Using the PMDT, it is possible to adjust the phase of Sideband 3 to make it equal to Sideband 4. This document contains proprietary information and such information may not be disclosed to others for any purpose nor used for manufacturing purposes without written permission from SELEX Sistemi Integrati Inc 89 Rev -, December 28, 2007

It is not possible to equalize the phases of two different frequencies. But, consider the Carrier and LSB frequencies. Their mix in space creates a beat frequency (9960 Hz). This provides half the modulation. The phase of the beat frequency depends on the relative phase of the two original signals (Carrier and LSB). This document contains proprietary information and such information may not be disclosed to others for any purpose nor used for manufacturing purposes without written permission from SELEX Sistemi Integrati Inc 90 Rev -, December 28, 2007

Now, consider the Carrier and USB frequencies. Their mix in space also creates a beat frequency (9960 Hz). This provides the other half of the modulation The phase of this beat frequency also depends on the relative phase of the two original signals (Carrier and USB). This document contains proprietary information and such information may not be disclosed to others for any purpose nor used for manufacturing purposes without written permission from SELEX Sistemi Integrati Inc 91 Rev -, December 28, 2007

If the phase of the two modulations are the same, then they mix well in space, causing a maximum effect on the carrier (maximum 9960 Hz modulation). If the phase of the two modulations are not the same, then they don’t mix well in space, causing less than optimum effect on the carrier (low 9960 Hz modulation). This document contains proprietary information and such information may not be disclosed to others for any purpose nor used for manufacturing purposes without written permission from SELEX Sistemi Integrati Inc 92 Rev -, December 28, 2007

If the phase of the carrier is adjusted, it has the opposite effect on the two beat signals. Movement of carrier phase both advances one beat signal, and retards the other. When the 9960 Hz modulation is at its maximum, the Carrier to Sideband Phase is at its optimum value. This document contains proprietary information and such information may not be disclosed to others for any purpose nor used for manufacturing purposes without written permission from SELEX Sistemi Integrati Inc 93 Rev -, December 28, 2007

LECTURE RF MONITOR This document contains proprietary information and such information may not be disclosed to others for any purpose nor used for manufacturing purposes without written permission from SELEX Sistemi Integrati Inc 94 Rev -, December 28, 2007

Objectives of RF Monitor Lecture • The Inputs and Outputs of the RF Monitor • The Test Points of the RF Monitor and their meaning • Adjustment Points of the RF Monitor This document contains proprietary information and such information may not be disclosed to others for any purpose nor used for manufacturing purposes without written permission from SELEX Sistemi Integrati Inc 95 Rev -, December 28, 2007

RF Monitor inputs and outputs Each output is audio, directed to Audio Generator Each of these inputs is RF Each audio output is also seen on the test points. TX 1 Forward power TX 1 Reflected power SB 2 Reflected power SB 3 Reflected power SB 4 Reflected power Sideband forward powers are not detected in the RF Monitor The RF Monitor contains the Dummy Load for the Standby Transmitter This document contains proprietary information and such information may not be disclosed to others for any purpose nor used for manufacturing purposes without written permission from SELEX Sistemi Integrati Inc 96 Rev -, December 28, 2007

RF Monitor adjustments Adjustments Tüm ayarlar ile, harici wattmetrede okunan değerlere göre PMDT ayarlanır. All the adjustments are to calibrate the PMDT reading to match an external wattmeter. TX 1 and 2 Forward and Reflected Sidebands 1, 2, 3, and 4 Reflected Note: Sideband forward power PMDT reading is calibrated using R 100 on each Sideband Generator This document contains proprietary information and such information may not be disclosed to others for any purpose nor used for manufacturing purposes without written permission from SELEX Sistemi Integrati Inc 97 Rev -, December 28, 2007

LECTURE MONITORS This document contains proprietary information and such information may not be disclosed to others for any purpose nor used for manufacturing purposes without written permission from SELEX Sistemi Integrati Inc 98 Rev -, December 28, 2007

Objectives of Monitors Lecture • The Inputs and Outputs of the Monitor • The fundamental principle of how the composite signals are analyzed This document contains proprietary information and such information may not be disclosed to others for any purpose nor used for manufacturing purposes without written permission from SELEX Sistemi Integrati Inc 99 Rev -, December 28, 2007

Monitor Antenna Dipole antenna located on any radial, at about 300 feet from the center of the counterpoise. This document contains proprietary information and such information may not be disclosed to others for any purpose nor used for manufacturing purposes without written permission from SELEX Sistemi Integrati Inc 100 Rev -, December 28, 2007

Detector 1 Test Generator Detector 2 Standby Composite This document contains proprietary information and such information may not be disclosed to others for any purpose nor used for manufacturing purposes without written permission from SELEX Sistemi Integrati Inc 101 Rev -, December 28, 2007

Monitor CCA Simplified Block Diagram 30 Hz Filter Peak Detector Zero Crossing Detector 9960 Hz Filter Peak Detector % Mod 30 Hz AM Square Wave 30 Hz AM freq, Azimuth % Mod 9960 Hz AM Field Det 1 Field Det 2 Test Gen MUX Composite (TP 5) Zero Crossing Detector FM Discriminator Square Wave 9960 Hz freq Peak Detector Zero Crossing Detector DC Level Detector 300 – 3 KHz Filter RF Level This document contains proprietary information and such information may not be disclosed to others for any purpose nor used for manufacturing purposes without written permission from SELEX Sistemi Integrati Inc 1020 Notch FL Peak Detector 1020 Hz Filter % Mod Ident Freq Ident 102 Rev -, December 28, 2007 Dev. Ratio FM Square Wave 30 Hz FM freq, Azimuth % Mod Voice

LECTURE FIELD DETECTOR This document contains proprietary information and such information may not be disclosed to others for any purpose nor used for manufacturing purposes without written permission from SELEX Sistemi Integrati Inc 103 Rev -, December 28, 2007

Field Detector Lecture Detects RF from the field monitor antenna, converts to audio for analysis by the monitors. This document contains proprietary information and such information may not be disclosed to others for any purpose nor used for manufacturing purposes without written permission from SELEX Sistemi Integrati Inc 104 Rev -, December 28, 2007

LECTURE REMOTE MAINTENANCE SYSTEM (RMS) This document contains proprietary information and such information may not be disclosed to others for any purpose nor used for manufacturing purposes without written permission from SELEX Sistemi Integrati Inc 105 Rev -, December 28, 2007

CPU CCA Lecture • The main function of the CPU CCA • The purpose of the Lithium battery Gathers data for interaction with PMDT and RCSU software. Communicates with other RMS modules through the backplane. The EEPROM is actually a battery-operated RAM. • Retains its memory as long as the battery is good. • Battery is designed to stay good for 100 years, as long as power remains constantly on. • It takes more than a month of no power to drain the battery • If the CPU CCA is removed from the cabinet, remove the battery jumper to conserve charge. This document contains proprietary information and such information may not be disclosed to others for any purpose nor used for manufacturing purposes without written permission from SELEX Sistemi Integrati Inc 106 Rev -, December 28, 2007

Facilities CCA • Allows CPU μP to send and receive info to/from various discrete and analog lines. This document contains proprietary information and such information may not be disclosed to others for any purpose nor used for manufacturing purposes without written permission from SELEX Sistemi Integrati Inc 107 Rev -, December 28, 2007

Facilities CCA Inputs and Outputs This document contains proprietary information and such information may not be disclosed to others for any purpose nor used for manufacturing purposes without written permission from SELEX Sistemi Integrati Inc 108 Rev -, December 28, 2007

Serial Interface CCA Summary – Allows CPU μP to communicate with devices that require serial communication. • Audio Generator(s) • Monitors • DME(s) • PMDT • External Modem (if used, not required) This document contains proprietary information and such information may not be disclosed to others for any purpose nor used for manufacturing purposes without written permission from SELEX Sistemi Integrati Inc 109 Rev -, December 28, 2007

Test Generator CCA Provides a composite audio signal to apply to the monitors for testing/certification. It takes several minutes for a signal to form once it is configured. This document contains proprietary information and such information may not be disclosed to others for any purpose nor used for manufacturing purposes without written permission from SELEX Sistemi Integrati Inc 110 Rev -, December 28, 2007

Modem CCA Two modems on this module: 1. Dedicated line for RCSU 2. Dialup modem for remote PMDT connection This document contains proprietary information and such information may not be disclosed to others for any purpose nor used for manufacturing purposes without written permission from SELEX Sistemi Integrati Inc 111 Rev -, December 28, 2007

Optional RSCU Interface Allows interface between VOR and obsolete 1138 RSCU. This document contains proprietary information and such information may not be disclosed to others for any purpose nor used for manufacturing purposes without written permission from SELEX Sistemi Integrati Inc 112 Rev -, December 28, 2007

Low Voltage Power Supplies 1 A 15 supplies Transmitter 1 1 A 16 supplies Transmitter 2 1 A 14 supplies the RMS This document contains proprietary information and such information may not be disclosed to others for any purpose nor used for manufacturing purposes without written permission from SELEX Sistemi Integrati Inc 113 Rev -, December 28, 2007

Commutator CCAs SB 2 SB 1 5 7 9 11 13 15 17 19 21 3 1 47 45 43 41 39 37 35 33 31 29 27 25 23 6 8 10 12 14 16 18 20 22 2 48 46 44 42 40 38 36 34 32 30 28 26 24 SB 3 This document contains proprietary information and such information may not be disclosed to others for any purpose nor used for manufacturing purposes without written permission from SELEX Sistemi Integrati Inc 4 114 Rev -, December 28, 2007

Procedures not covered during labs • 6. 4. 3 Cabinet Backplane Connector Adjustment. Use if a replacement module in the RMS does not quite fit into the slot. • 6. 4. 4 Replacing CPU (1 A 13) CCA. Use this procedure when replacing a CPU CCA. It outlines the procedures for loading the alignment and configuration data into the new CPU. • 6. 4. 5 Update of DVOR Software. This should not be attempted except at the instruction of the factory. New software may not be compatible with old hardware. • 6. 4. 8 Changing the CPU CCA (1 A 13) Lithium Battery. If the battery fails during Annual Preventive Maintenance (or at any other time), follow this procedure to replace it. This will keep the data intact. • 9. 7. 1 Strapping Battery Charger Power Subsystem (BCPS) for 240 VAC. Use this procedure any time the BCPS is replaced. • 9. 7. 4 Checking the Battery Charger Power Subsystem for 43 or 48 Volts. Use this procedure any time the Main Voltage needs to be checked. Especially check it after the BCPS is replaced, or after a commercial power surge. This document contains proprietary information and such information may not be disclosed to others for any purpose nor used for manufacturing purposes without written permission from SELEX Sistemi Integrati Inc 115 Rev -, December 28, 2007

LECTURE FLIGHT CHECK This document contains proprietary information and such information may not be disclosed to others for any purpose nor used for manufacturing purposes without written permission from SELEX Sistemi Integrati Inc 116 Rev -, December 28, 2007

Objectives of Flight Check Lecture • How to provide ground support for a flight check What to expect: Prior to arrival, set the DVOR (and associated DME) with antenna to transmitter 1. On arrival, a flight crew normally begins a commissioning FC with an orbit. After the orbit, you can expect to hear the following results. This document contains proprietary information and such information may not be disclosed to others for any purpose nor used for manufacturing purposes without written permission from SELEX Sistemi Integrati Inc 117 Rev -, December 28, 2007

Preparation for Flight Check • Calibrate Transmitters 1 and 2 to produce the value of CSB defined on the Nominal screen, measured with external wattmeter • Calibrate the Sideband Generators so that all eight sidebands have the same power output, measured with external wattmeter • Calibrate the PMDT wattmeter readings • Perform all phasing adjustments (SB 1 -SB 2, SB 3 -SB 4, CSB to Sideband) • Perform the full checkout procedure, paragraph 6. 2 of the manual • Adjust the transmitter values to produce ideal monitor values on the PMDT This document contains proprietary information and such information may not be disclosed to others for any purpose nor used for manufacturing purposes without written permission from SELEX Sistemi Integrati Inc 118 Rev -, December 28, 2007

Transmitters, Configuration, Nominal For one, the flight crew will announce the Station Error, or Offset. Adjust for Station Error by putting the number given by the Flight Check crew in the Azimuth Index field. If using that number increases the error, then change the sign of the index. You will also be told the Spread. This document contains proprietary information and such information may not be disclosed to others for any purpose nor used for manufacturing purposes without written permission from SELEX Sistemi Integrati Inc The maximum spread during Flight Check is 4 degrees. There is no corrective action to reduce spread which can be performed during the flight check. All the causes are due to siting. 119 Rev -, December 28, 2007

Transmitters, Configuration, Nominal You will be told the percent modulation of the 9960 Hz signal. This document contains proprietary information and such information may not be disclosed to others for any purpose nor used for manufacturing purposes without written permission from SELEX Sistemi Integrati Inc Adjust the 9960 Hz percent modulation by increasing or decreasing the SBO RF level. 120 Rev -, December 28, 2007

Transmitters, Configuration, Offsets and Scale Factors You will be told the percent modulation of the 30 Hz signal. This document contains proprietary information and such information may not be disclosed to others for any purpose nor used for manufacturing purposes without written permission from SELEX Sistemi Integrati Inc Adjust the 30 Hz percent modulation by increasing or decreasing the Scale factor for Transmitter 1. 121 Rev -, December 28, 2007

Transmitters, Configuration, Nominal Once the flight crew has completed a test with Transmitter 1 on antenna, they will ask you to transfer the antenna to Transmitter 2. You will transfer back and forth several times during the Flight Check. DO NOT adjust any Nominal values when Transmitter 2 is on the antenna. This document contains proprietary information and such information may not be disclosed to others for any purpose nor used for manufacturing purposes without written permission from SELEX Sistemi Integrati Inc 122 Rev -, December 28, 2007

Transmitters, Configuration, Nominal If the pre-flight inspection alignment was performed well, then there should be no need to adjust Transmitter 2. However, if an adjustment is needed, make all adjustments for Transmitter 2 on Transmitters, Configuration, Offsets and Scale Factors screen. This document contains proprietary information and such information may not be disclosed to others for any purpose nor used for manufacturing purposes without written permission from SELEX Sistemi Integrati Inc 123 Rev -, December 28, 2007

Once the flight check is complete, and has passed, DO NOT ADJUST ANY MORE TRANSMITTER PARAMETERS. However, it is necessary to adjust the monitor parameters on the Field Detector column. Azimuth Angle Offset to correct Azimuth Angle. This document contains proprietary information and such information may not be disclosed to others for any purpose nor used for manufacturing purposes without written permission from SELEX Sistemi Integrati Inc 124 Rev -, December 28, 2007

Monitors, Configuration, Offsets and Scale Factors 30 Hz Modulation to correct 30 Hz Modulation 9960 Hz Modulation to correct 9960 Hz Modulation Once the Flight Check has passed, and the monitors are reading ideal values, then maintenance is complete. Put the controls in normal, clean up, lock up, and have some Scooby snacks. End of Slide Presentation. This document contains proprietary information and such information may not be disclosed to others for any purpose nor used for manufacturing purposes without written permission from SELEX Sistemi Integrati Inc 125 Rev -, December 28, 2007