1. Manuals
  2. Brands
  3. Harris Manuals
  4. Transmitter
  5. Atlas DVL400
  6. Technical manual

Harris Atlas DVL400 Technical Manual

Atlas series dvb-t uhf transmitter
Hide thumbs
Table of Contents

Advertisement

Quick Links

TECHNICAL MANUAL
888-2473-001
Atlas Series™
DVB-T UHF Transmitter
Atlas Series™
DVB-T UHF Transmitter
T.M. No. 888-2473-001
Rev C Feb 25, 2003
© Copyright Harris Corporation 2002, 2003
All rights reserved

Advertisement

Table of Contents
loading
Need help?

Need help?

Do you have a question about the Atlas DVL400 and is the answer not in the manual?

Questions and answers

Related Manuals for Harris Atlas DVL400

Summary of Contents for Harris Atlas DVL400

  • Page 1 TECHNICAL MANUAL 888-2473-001 Atlas Series™ DVB-T UHF Transmitter Atlas Series™ DVB-T UHF Transmitter T.M. No. 888-2473-001 Rev C Feb 25, 2003 © Copyright Harris Corporation 2002, 2003 All rights reserved...
  • Page 2 Telephone 44 (0) 1223 245115 to contact the service parts department or address correspondence to Service Parts Department, Broadcast Communications Division, P.O. Box 41, 515 Coldhams Lane, Cambridge England. The HARRIS factory may also be contacted through a FAX facility 44 (0) 1223 411370 NOTE: The # symbol used in the parts list means used with (e.g.
  • Page 3 Manual Revision History Atlas Series™ REV. DATE Pages Affected Rev 0 March 04, 2002 Rev A May16, 2002 Released. Added installation info for cabinet combiner reject load flow switch, page 2-7. Rev B Sept 12, 2002 Add two pages to front pages as stated in ECO 48448: RTTE Compliance Statement &...
  • Page 4 888-2473-001 MRH-2 WARNING: Disconnect primary power prior to servicing.
  • Page 5 • In the ten digit part numbers, if the last three numbers are 000, the item is a part that Harris has purchased and has not manufactured or modified. If the last three numbers are other than 000, the item is either manufactured by Harris or is purchased from a vendor and modified for use in the Harris product.
  • Page 7 The installation, operation, maintenance and service of this equipment involves risks both to personnel and equipment, and must be performed only by qualified personnel exercising due care. HARRIS CORPORATION shall not be responsible for injury or damage resulting from improper procedures or from the use of improperly trained or inexperienced personnel performing such tasks.
  • Page 9 ATLAS SERIES™ DVB-T Transmitter est conforme aux exigences essentielles et aux autres dispositions pertinentes de la directive 1999/5/CE Par la présente, HARRIS Broadcast Communications déclare que ce ATLAS SERIES™ DVB-T Transmitter est conforme aux exigences essentielles et aux autres dispositions de la directive 1999/5/CE qui...
  • Page 10 Italian Con la presente HARRIS Broadcast Communications dichiara che questo ATLAS SERIES™ DVB-T Transmitter è conforme ai requisiti essenziali ed alle altre disposizioni pertinenti stabilite dalla direttiva 1999/5/CE. Spanish Por medio de la presente HARRIS Broadcast Communications declara que el ATLAS SERIES™ DVB-T Transmitter cumple con los...

  • Page 13: Table Of Contents

    Table of Contents Section 1 RF Initial Turn ON .....2-22 Cabinet Phasing ......2-23 Introduction Parallel Remote Control Connections .
  • Page 14 Table of Contents (continued) Section 4 Power Supply Monitor Board ... . .4-32 S1, PS Monitor Board Config Switches ..4-33 Theory of Operation LVPS Interface and Cabinet ID ..4-34 Introduction .

  • Page 15: Purpose Of This Manual

    ATLAS Series™ Section 1 Introduction Purpose of This Manual This technical manual contains the information pertaining to the Atlas™ Series UHF solid-state DTV transmitter. The various sections of this technical manual provide the following types of information. • Section 1, Introduction, provides general manual layout, frontispiece, equipment description, block diagram and general specifications.

  • Page 16: General Description

    3kW, with the dual cabinet configuration on the right allowing for 4.3kW and 5.7kW versions. All Models up to 3kW DVL 4300 and DVL 5700 DVL 400 - DVL 3000 (4.3kW and 5.7kW Models) Figure 1-1 Transmitter Front View 888-2473-001 2/25/03 WARNING: Disconnect primary power prior to servicing.

  • Page 17: Atlas Series™ Transmitter Models

    The available models are listed below in Table 1-1. Table 1-1 Atlas Series™ Transmitter Models Tx Models Cabinets PA Modules Output Power Primary Cooling DVL 400 400W LIQUID DVL 800 800W LIQUID DVL 1100 1.1kW LIQUID DVL 1500 1.5kW...

  • Page 18: System Block Diagrams

    Section 1 Introduction ATLAS Series™ 1.2.2 System Block Diagrams The following figures contain System block diagrams showing the basic signal flow and configuration for each Atlas Series™ Transmitter Model. Figure 1-2 shows the Medium Power single cabinet system with up to 8 PA modules. Note that a driver is not needed, as the exciter power is sufficient to drive up to 8 PA modules.

  • Page 19: Section 1 Introduction

    Section 1 Introduction ATLAS Series™ Model: DVL 5700 Cabinet #2 460W PA 1 Note: For DVL 4300 Omit PAs 7 & 8 and PS #4 RF Output from 460W These Cabinet #1 Components are PA 2 outside the transmitter cabinet 460W Reject 3.4kW...

  • Page 20: Transmitter Control System

    Section 1 Introduction ATLAS Series™ 1.2.3 Transmitter Control System The transmitter uses a distributed architecture control system. This means that each transmitter sub-system is responsible for its own monitoring and protection and simply reports back to the Main Controller for display on the GUI (Graphical User Interface) or to a remote interface.

  • Page 21: Control System Communications

    The Harris ISP program is provided on the CD-ROM accompanying this manual along with all of the transmitter software as it shipped from the factory. The Harris ISP program is easy to use and it only takes a few minutes to load or update software.

  • Page 22: Pa Module

    Section 1 Introduction ATLAS Series™ 1.2.4 PA Module The Atlas Series™ PA Module utilises LDMOS amplifiers to produce up to 460W average power output. Each module weighs approximately 20.5kg and can be un- plugged while the transmitter is running. A single cabinet Atlas Series™ transmitter can have 1, 2, 3, 4, 6 or 8 PA modules to achieve the various power levels shown in Table 1-1.

  • Page 23: Module Control

    Section 1 Introduction ATLAS Series™ 1.2.4.1 Module Control The primary method for control and monitoring of the PA Modules is by the serial CAN (Controller Area Network) Bus. It is used for control, status and monitoring of all PA Module parameters and for the reporting of Module faults. As a backup to this serial control network, each PA Module has dedicated hardware control lines for functions such as On, Off, Restart and RF Mute.

  • Page 24: Cooling System

    Section 1 Introduction ATLAS Series™ 1.2.6 Cooling System The Atlas Series™ transmitter uses a 50/50 glycol liquid cooling system to remove the majority of the heat away from the transmitter but also has cabinet flushing fans to remove residual cabinet heat. A simplified block diagram of the liquid cooling system is shown in Figure 1-6.

  • Page 25: Pump Module

    Section 1 Introduction ATLAS Series™ * Each of these status indications is also sent to the transmitter for display on the GUI and via remote control. When in Remote mode, the transmitter is responsible for control of the cooling system, including ON/OFF, manual pump selection and automatic pump switching in the case of a failure.

  • Page 26: Heat Exchanger

    Section 1 Introduction ATLAS Series™ 1.2.6.3 Heat Exchanger The heat exchanger, which is usually installed outside, has 2 fans. The fans are enabled whenever the pump module is activated, but temperature sensors determine when the fans will actually start. The first one turns on when the coolant temperature reaches 32 C with the second one turning on at 38 1.2.6.4...

  • Page 27: V-Xcast™ Exciter

    Section 1 Introduction ATLAS Series™ 1.2.7 V-XCAST™ Exciter The ITIS V-XCAST™ COFDM (Coded Orthogonal Frequency Division Multiplex) exciter is used with the Atlas Series™ transmitter. This exciter is described in a separate instruction book. A second hot standby exciter/driver and drive chain switcher is available as an option.

  • Page 28: General Specifications

    Section 1 Introduction ATLAS Series™ General Specifications The following table lists the specifications the Atlas Series™ UHF transmitter. NOTE: Specifications subject to change without notice. Table 1-2 Atlas Performance Specifications Item Units Conditions Notes Value General Frequency Range Any UHF TV 470-860 Channel DTV Channel...
  • Page 29 Section 1 Introduction ATLAS Series™ Table 1-2 Atlas Performance Specifications Item Units Conditions Notes Value Performance Equivalent Noise Measured per ETR 290 < 0.5 Degradation (END) Modulation Error Ratio At rated Power and -37 dB Within the > 33 dB (MER) shoulders (using HP89440) performance...
  • Page 30 Weight includes all options Model Weight DVL400 DVL800 DVL1100 DVL1500 DVL2200 DVL3000 DVL4300 DVL5700 1020 "Note: Unless otherwise noted, these specifications apply at the output of a Harris supplied mask filter." 1-16 888-2473-001 2/25/03 WARNING: Disconnect primary power prior to servicing.

  • Page 31: Installation / Initial Turn-On

    3. A copy of the transmitter control software of the same revision as loaded into the transmitter at the factory. 4. Harris ISP (In-System Programming) software which is used to install software upgrades into the transmitter controllers. 2/25/03 888-2473-001...

  • Page 32: Installation Drawings

    Transmitter Wiring Diagram - Interconnection wiring diagram for all assemblies inside the transmitter cabinet. The wiring diagrams are model dependent: • 843-5550-102, DVL 400 up to DVL 1100 - Single Cabinet with 1 to 3 PA Modules. • 843-5550-154, DVL 1500, single cabinet with 4 PA modules •...

  • Page 33: Installation Checkboxes

    Section 2 Installation / Initial Turn-On ATLAS Series™ • 843-5550-100, DVL 4300 and DVL 5700 - Additional PA Cabinet Wiring Diagram. Only used with dual cabinet transmitters, this schematic is used in addition to the 843-5550-004. h. Pump Module Outline Drawing - 843-5550-175 i.

  • Page 34: Cooling System Installation

    The major components of the Atlas cooling system include the pump module, cooling control panel and heat exchanger. The following procedure will rely heavily on the following schematics. DVL 400 - DVL 3000: a. Electrical Installation Diagram - 843-5550-189. b. AC Power Flow Diagram- 843-5550-188.
  • Page 35 Section 2 Installation / Initial Turn-On ATLAS Series™ Set the pump module in place and mount the cooling control panel. Use shims or flat washers to make sure the pump module is level and solid (not rocking). The cooling control panel should be mounted to a solid surface, or structure, able to withstand the minor vibration of the contactors without coming loose.
  • Page 36 Section 2 Installation / Initial Turn-On ATLAS Series™ signals connect from terminals X1-8 thru X1-15 in the heat exchanger to X2-13 thru X2-20 in the cooling control panel. Table 2-2 is a connection reference chart. NOTE: Condensation can occur in the conduit leading to the outside heat exchanger from the control panel.

  • Page 37: Transmitter Ac Connection

    Section 2 Installation / Initial Turn-On ATLAS Series™ If there is a temperature overload switch on the test load, (as would be the case for an air cooled load) it should be connected to J18-11 and J18-12. This will mute the transmitter rf output if the test load temperature threshold is exceeded. A closed contact is required to operate the transmitter.
  • Page 38 Section 2 Installation / Initial Turn-On ATLAS Series™ The DVL1500 -DVL5700 models are 3 phase 380/400/415Vac at 50/60Hz delta or wye. The DVL400 - DVL1100 models are equipped for single phase 220/240Vac at 50/60Hz. If voltage variations in excess of +10/-15% are anticipated, the transmitter power input must be equipped with automatic voltage regulators (optional equipment) capable of correcting the mains voltage.
  • Page 39 Section 2 Installation / Initial Turn-On ATLAS Series™ Safety Ground Connection Figure 2-2 AC Connection to AC Disconnect Switch, S3 Verify that the Primary AC line voltage is correct for the installed MOV board. Measure the primary AC line voltage from phase to phase and write it in the blank below.

  • Page 40: Second Pa Cabinet Interconnections

    Section 2 Installation / Initial Turn-On ATLAS Series™ Second PA Cabinet Interconnections NOTE: The following only applies to the DVL 4300 and the DVL 5700 transmitters which have an additional PA Cabinet (Cabinet 2). The following interconnects will have to be made between from the Main PA/ Control cabinet (called Cabinet 1) to the Additional PA Cabinet (called Cabinet 2).

  • Page 41: Signal And Ground Connections

    Section 2 Installation / Initial Turn-On ATLAS Series™ Signal and Ground Connections NOTE: Control and signal wires should never be run in the same conduit with any AC wiring. A separate conduit should be used for control and signal cables. Connect an MPEG Transport Stream DVB ASI input to each exciter.

  • Page 42: Cabinet Combiner Connections (Dvl 4300 And 5700 Only)

    Precision directional couplers for measuring forward and reflected power should be installed both before the filter and at the system output for measuring and calibrating power. If the precision couplers are supplied by Harris, they will come with a coupling chart which can be used for calbration purposes.

  • Page 43: 2.11 3 Port U-Link Panel Connections

    Section 2 Installation / Initial Turn-On ATLAS Series™ 2.11 3 Port U-Link Panel Connections IMPORTANT: This note only applies to systems without a patch panel or rf switch. If no patch panel or switch is to be installed in the transmitter RF output line, then a jumper must be placed on the External I/O board from J14-3 (RF_SW_A_STAT) to J14-1 (ground).

  • Page 44: 2.12 Install Pa And Ps Modules

    TEMPERATURE. DO NOT TOUCH THE MODULES WITH BARE HANDS AFTER THE TRANSMITTER HAS BEEN RUNNING. SPECIAL GLOVES HAVE BEEN PRO- VIDED IN THE REAR OF THE CABINET OR CAN BE OBTAINED FROM HARRIS, PART #0990006483 OR GRAINGER ITEM #4JF36. Open all coolant system gate valves and make sure all drain valves are closed before proceeding with the initial turn on.

  • Page 45: 2.13 Initial Turn-On

    Section 2 Installation / Initial Turn-On ATLAS Series™ 2.13 Initial Turn-On Read and understand the entire initial turn-on procedure before starting. Detailed use of all GUI screens is given in Section 3 Operation. Shut off all of the front panel breakers. Apply 3 phase primary power to the transmitter.
  • Page 46 Section 2 Installation / Initial Turn-On ATLAS Series™ Check the Low Voltage power supplies and AC Mains voltage. Press the POWER SUPPLY button then PS METERS to access the PS metering screen. Check for +15, -15 and +7.5 volts on LV PSU 1 and optional LV PSU 2, with the BUS voltage slightly lower.

  • Page 47: 2.13.1 Cooling System Turn On

    Section 2 Installation / Initial Turn-On ATLAS Series™ Check and set the transmitter configuration. Here, it is possible to set the number of exciters, as well as the number of cooling pumps. Fully redundant transmitters will have two exciters, two cooling pumps and two low voltage power supply units (LV PSU).

  • Page 48: 2.13.1.1 Setting The Transmitter Flow Rate

    Section 2 Installation / Initial Turn-On ATLAS Series™ Check immediately for any leaks at any of the cooling system points • Transmitter inlet and outlet pipe connections • Pump module inlet and outlet pipe connections • Heat exchanger inlet and outlet pipe connections •...

  • Page 49: Level

    Section 2 Installation / Initial Turn-On ATLAS Series™ mance. Power down and rewire for correct sequence of the AC phases if required. 2.13.1.2 Setting the Test Load Flow Switch Trip Level To set the trip level, an external flow meter needs to be attached in series with the load coolant supply.
  • Page 50 Section 2 Installation / Initial Turn-On ATLAS Series™ • Press SYSTEM then SYSTEM COOLING. This screen is shown in Figure 3-32 on page 3-28. • Select manual pump switching. Button should display MANUAL ENABLED. • Press pump select button for PUMP A ON then PUMP B ON. The pumps should switch.

  • Page 51: 2.13.1.5 Local Pump Operation

    Section 2 Installation / Initial Turn-On ATLAS Series™ 2.13.1.5 Local Pump Operation In normal operation (Cooling Control Panel set for Remote), the transmitter commands the pump selection. If there is a need for operating the pump module independently from the transmitter, the Local button on the Cooling Control Panel should be activated.
  • Page 52 Section 2 Installation / Initial Turn-On ATLAS Series™ The exciter has two DB9 serial communication ports on the rear panel. The Atlas transmitter uses the port labeled Atlas Main Controller. The other port, labeled RS232 is used to connect to the external PC running the V-XCAST software. The ports are referred to as DCE port for the PC communications link and DTE port for the Atlas Main Controller communications link.

  • Page 53: 2.13.3 Rf Initial Turn On

    Section 2 Installation / Initial Turn-On ATLAS Series™ 2.13.3 RF Initial Turn ON Shut the transmitter OFF. The transmitter should be initially powered into the test load. Check and Set the ALC (Automatic Level Control). Press POWER AMP, then PA METERS. The ALC number that controls the power output level of the transmitter is seen at the upper right corner.

  • Page 54: 2.13.4 Cabinet Phasing

    Section 2 Installation / Initial Turn-On ATLAS Series™ For single cabinet systems (up to DVL 3000) slowly bring up the transmitter power to the nominal value, as indicated by the bar graph. Monitor the cabinet forward and reflected powers, as well as the VSWR reading. A large VSWR (above 1.1) is indicative of a bad RF connection to the test load.

  • Page 55: 2.14 Parallel Remote Control Connections

    Section 2 Installation / Initial Turn-On ATLAS Series™ GOAL: To get the Reject Loads detected rf sample Detected rf sample level readings level, 0000 - 1023 below 0030 (with Gain set to LOW) Module Group select buttons Press one of these PA Module Phase buttons Control Voltage...

  • Page 56: 2.14.1 Transmitter Control Functions, J13 And J14

    Section 2 Installation / Initial Turn-On ATLAS Series™ 2.14.1 Transmitter Control Functions, J13 and J14 All control inputs use opto-isolators for surge protection. The opto-isolators are powered by an internal +5Vdc from an isolation protection circuit, U54. All transmitter control functions (except Remote RF Mute) are momentary ground switching and require the remote control equipment to sink at least 15mA to activate the function.

  • Page 57: Remote Status Outputs, J15 & J

    Section 2 Installation / Initial Turn-On ATLAS Series™ * Requires optional equipment 2.15 Remote Status Outputs, J15 & J16 All of the remote status outputs are open collector and will sink 100mA at up to +24Vdc to provide an indication status is active. The pull up supply voltage for the status indications can be supplied via J15 &...
  • Page 58 Section 2 Installation / Initial Turn-On ATLAS Series™ Table 2-4 J15 & J16, External I/O Board, Remote Status Outputs Connector Schematic Label Status Output J15-10 /OUTPUT 16 ASI 1 / 2 SEL Status J15-11 +VDC_EXT_SUPPLY Input For External Pull Up Supply Voltage J15-12 GNDB Isolated Ground...

  • Page 59: 2.15.1 Remote Power Metering, J17

    Section 2 Installation / Initial Turn-On ATLAS Series™ 2.15.1 Remote Power Metering, J17 Each analogue metering output will provide 0 - 4.096Vdc output into a 400 ohm load (where 3Vdc = Full Scale). The connections for J17 are listed in Table 2-5. Table 2-5 J17, External I/O Board, Remote Power Metering Connection Schematic Label...
  • Page 60 Section 2 Installation / Initial Turn-On ATLAS Series™ 2-30 888-2473-001 2/25/03 WARNING: Disconnect primary power prior to servicing.

  • Page 61: Operation

    ATLAS Series™ Section 3 Operation Introduction This section gives detailed operational information for the Atlas™ Series Solid- State UHF DVB-T transmitter. Information will pertain mostly to the operation and navigation of the Graphical User interface (GUI) Touchscreen display. NOTE: Operation of the V-XCAST exciter is covered in a separate manual which came with the transmitter.

  • Page 62: Main Menu "Quick" Buttons

    Section 3 Operation ATLAS Series™ NOTE: A similar set of GUI screens is available via web browser with an ethernet network connection and the optional network interface box. 3.2.1 Main Menu "Quick" Buttons Just to the right of the touchscreen, there are 5 hardware buttons which are part of the front panel overlay.

  • Page 63: Global Status And Navigation

    Section 3 Operation ATLAS Series™ 3.3.1 Global Status and Navigation The top 2 sections of the touchscreen display are considered global because they show up on all screens. The top line gives the transmitter model number and the station name and/or location which is entered by the customer in the configuration screen with a maximum of 24 characters including spaces.

  • Page 64: Gui Home Page

    Section 3 Operation ATLAS Series™ GUI Home Page The HOME screen shown in Figure 3-3 is the primary operator screen and the default screen after boot up. The HOME screen contains the most important general operator information such as: a. System and Cabinet Forward and Reflected power b.
  • Page 65 Section 3 Operation ATLAS Series™ There are always five touchscreen navigation buttons on the right side of the display. These are different on almost every screen and, with the exception of the HOME screen, do not relate to the hardware buttons on the front panel just to the right of the display.

  • Page 66: Drive Chain Main Menu

    Section 3 Operation ATLAS Series™ Drive Chain Main Menu If you press the Drive Chain button on the control panel overlay, or the Drive Chain button on the HOME screen, it will take you to the screen shown in Figure 3-4. The Drive Chain Menu structure is shown in Figure 3-44 on page 3-37.

  • Page 67: Drive Chain Faults

    Section 3 Operation ATLAS Series™ 1. Auto/Manual - This toggle button should always be in the Auto posi- tion for normal operation. Placing it in Manual mode prevents an autoswitch to the alternate drive chain or ASI input. In AUTO mode, if the on-air drive chain drops below 50% of nominal power the controller will automatically switch to the backup drive chain (if available).

  • Page 68: Drive Meters

    Section 3 Operation ATLAS Series™ 3.5.2 Drive Meters When the "Drive Meters" button in Figure 3-4 is pressed, it will bring up the screen shown in Figure 3-6. This screen monitors the exciter power as reported by the exciter and via a directional coupler in the Drive Control Unit or DCU. Exciter power as reported to controller by V-XCAST exciter...

  • Page 69: Exciter Setup

    Section 3 Operation ATLAS Series™ 3.5.3.1 Exciter Setup The Exciter Setup screen in Figure 3-8 is accessed from the Exciter Setup button on the Drive Service screen. This screen provides access to some of the primary exciter configuration parameters without having to connect an external computer to the exciter serial port.
  • Page 70 Section 3 Operation ATLAS Series™ • Amp Correction Table and Filter Compensation Table - this provides a way for the transmitter control system to call up different correction and compensation tables stored in the exciters. Once set, this would only need to be changed if the transmitter frequency is changed or for an N+1 system where one transmitter is backing up 2 or more transmitters at different frequencies.
  • Page 71 Section 3 Operation ATLAS Series™ 3.5.3.1.1 Modulation Status and Input Status Pressing the Modulation Status or Input Status button on the Exciter Setup screen will take you to one of the screens in Figure 3-10. These screens read the modulation and input settings from the exciters(s), allowing the settings to be checked without connecting directly to the exciters with an external serial connection.

  • Page 72: Dcu Setup

    Section 3 Operation ATLAS Series™ 3.5.3.2 DCU Setup The DCU has a directional coupler for each exciter to measure exciter power external to the exciter. This power reading shows up on the Drive Meters screen in Figure 3-6. This screen is used to calibrate the display readings. A digital power meter is required to measure the DCU output.

  • Page 73: Power Amp Main Menu

    Section 3 Operation ATLAS Series™ Power Amp Main Menu If you press the Power Amp button on the control panel overlay, or the Power Amp button on the HOME screen, it will take you to the screen shown in Figure 3-12. The Power Amp Menu structure is shown in Figure 3-45 on page 3-38.

  • Page 74: Pa Faults

    Section 3 Operation ATLAS Series™ 3.6.1 PA Faults This screen is basically a list of all of the faults monitored in each PA Module. • An active fault will be highlighted in RED • A warning condition will be highlighted in YELLOW. The PA Faults screen in Figure 3-13, shows that PA Module #1, in PA Cabinet #1 has no faults.

  • Page 75: Pa Meters

    Section 3 Operation ATLAS Series™ 3.6.2 PA Meters This screen is accessed by pressing the "PA Meters" button in Figure 3-12. This screen gives detailed PA metering by PA Cabinet. For a single cabinet transmitter the PA Cabinet 2 button will be disabled and grayed out. A complete set of PA Meter readings is given in the Factory Test Data.

  • Page 76: Pa Service

    Section 3 Operation ATLAS Series™ 3.6.3 PA Service This screen is accessed by pressing the "PA Service" button in Figure 3-12. This screen allows individual PA modules to be turned on or off. The primary purpose of this screen is to turn off a PA module for removal. It will also allow only a single module to be turned on for troubleshooting purposes.

  • Page 77: Pa Module Alignment

    Section 3 Operation ATLAS Series™ 3.6.3.2 PA Module Alignment This screen is accessed by pressing the "PA Align" button in Figure 3-17. This screen allows the bias on the individual PA module pallets to be optimised. This procedure should only be done after the transmitter has been operating at nominal power output, in an average ambient temperature, for at least 20 minutes.

  • Page 78: Output Main Menu

    Section 3 Operation ATLAS Series™ Output Main Menu If you press the Output button on the control panel overlay, or the Output button on the HOME screen, it will take you to the screen shown in Figure 3-20. The Output Menu structure is shown in Figure 3-46 on page 3-38.

  • Page 79: Output Faults

    Section 3 Operation ATLAS Series™ 3.7.1 Output Faults This screen shows faults which are considered Cabinet or System level such as VSWR, Power High, foldback etc... • An active fault will be highlighted in RED • A warning condition will be highlighted in YELLOW A detailed explanation of each of these faults is given in Section 6, Diagnostics.

  • Page 80: Output Meters

    Section 3 Operation ATLAS Series™ 3.7.2 Output Meters This screen is dedicated for metering of: • Total System Forward and Reflected Power and also gives the VSWR. • PA Cabinet Forward, Reflected and VSWR for each cabinet. To Figure 3-20 Figure 3-22 Output Metering Screen 3.7.3 Output Service...

  • Page 81: Pa Reject Service

    Section 3 Operation ATLAS Series™ 3.7.3.1 PA Reject Service This screen shows the relative power at each of the PA module combiner reject loads. For a 2 cabinet system it also shows the relative power at the Cabinet combiner reject load. This screen should only be accessed by engineering personnel.

  • Page 82: Output Setup

    Section 3 Operation ATLAS Series™ 3.7.3.2 Output Setup This screen is accessed by pressing the Output Setup button on the Output Service screen in Figure 3-23. It is used to calibrate PA Cabinet and Total System Forward and Reflected power. For a detailed calibration procedure refer to "5.5 Power Calibrations"...

  • Page 83: Power Supply Main Menu

    Section 3 Operation ATLAS Series™ Power Supply Main Menu If you press the Power Supply button on the control panel overlay, it will take you to the screen shown in Figure 3-26. The Power Supply Menu structure is shown inFigure 3-47 on page 3-39. This is the overall Power Supply metering screen for both the PA Power Supplies and the Low Voltage Power Supply Units or LV PSU and the AC Mains.

  • Page 84: Ps Faults

    Section 3 Operation ATLAS Series™ 3.8.1 PS Faults This screen is Power Supply status screen which lists of all of the monitored power supply faults for the AC Mains and Low Voltage Power Supplies. An active fault will be highlighted in RED, while a warning condition will be highlighted in YELLOW.

  • Page 85: Ps Service

    Section 3 Operation ATLAS Series™ 3.8.3 PS Service This is an on-line help screen telling how to remove a power supply. To Figure 3-20 Figure 3-29 PS Service Screen 2/25/03 888-2473-001 3-25 WARNING: Disconnect primary power prior to servicing.

  • Page 86: System Main Menu

    Section 3 Operation ATLAS Series™ System Main Menu If you press the System button on the control panel overlay, it will take you to the screen shown in SYSTEM Figure 3-30. The System Menu structure is shown in Figure 3-48 on page 3-39. To Figure 3-31 To Figure 3-32 To Figure 3-36...

  • Page 87: System Control

    Section 3 Operation ATLAS Series™ 3.9.1 System Control The System Control screen is a fault and status screen for the transmitter communication and control system. System control is divided into: a. Parallel Bus - These indicators give the status of each of the 5 hard-wired par- allel control lines which are distributed to all transmitter controllers.

  • Page 88: System Cooling

    Section 3 Operation ATLAS Series™ 3.9.2 System Cooling This screen is the System Cooling Main Menu. It shows status, metering and faults for the cooling system. It also provides for automatic or manual control of pump switching and tells which pump is active. A Cabinet 2 button will be present for dual cabinet transmitters, DVL 4300 and DVL 5700.

  • Page 89: Cooling Faults

    Section 3 Operation ATLAS Series™ 3.9.2.2 Cooling Faults This screen is accessed by pressing either of the Cooling Faults buttons on the System Cooling screen. An active fault condition is highlighted in RED while a warning condition is highlighted in YELLOW. For more information on these faults refer to Section 6, Diagnostics.

  • Page 90: Cooling Service

    Section 3 Operation ATLAS Series™ 3.9.2.4 Cooling Service This screen is accessed by pressing the Cooling Service button on the System Cooling screen. It is a cooling system maintenance checklist and reminder. The screen has no other functionality. To Figure 3-32 Figure 3-35 Cooling Service Screen 3-30 888-2473-001...

  • Page 91: System Log

    Section 3 Operation ATLAS Series™ 3.9.3 System Log This screen is accessed by pressing the System Log button on the System screen in Figure 3-30 on page 3-26. It is a complete listing of all transmitter and system faults in the order in which they occurred. It can hold up to 99 faults and then becomes a FIFO (First IN - First Out) memory buffer.

  • Page 92: System Service

    Section 3 Operation ATLAS Series™ 3.9.4 System Service This screen is accessed by pressing the System Service button in Figure 3-30 on page 3-26. This screen simply provides information concerning the use of the sub- menus accessed from this point. These are: a.

  • Page 93: System Setup

    Section 3 Operation ATLAS Series™ 3.9.4.1 System Setup This screen provides a way to change 3 important pieces of information which are then used throughout the GUI. a. Station Name - This can be up to 24 characters and will appear at the top of Every GUI screen.
  • Page 94 Section 3 Operation ATLAS Series™ 3.9.4.1.1 Control Setup This screen allows the user to set the Date and time which will be used for reporting and for the fault log. It also allows for adjustment of the contrast of the GUI LCD display. The display contrast will adjust dynamically as the number is changed to allow for room lighting.
  • Page 95 Section 3 Operation ATLAS Series™ Once you see the screen in Figure 3-40, simply touch the X in the STEP 2 first 2 screens. This will get you to the first screen in Figure 3-41. To test the calibration simply touch the screen in several places to STEP 3 make sure an X shows up where you touched.

  • Page 96: Software Revisions (Sw Revs)

    Section 3 Operation ATLAS Series™ 3.9.4.2 Software Revisions (SW REVs) This screen shows the software revision for all transmitter controllers and PA module controllers. This information should be known before calling for technical support. To Figure 3-30 To Figure 3-37 Figure 3-42 Software Revisions Screen 3.9.4.2.1 Hardware Revisions This screen shows the hardware revisions for all of the transmitter control boards...

  • Page 97: 3.10 Gui Menu Structures

    Section 3 Operation ATLAS Series™ 3.10 GUI Menu Structures The following figures are simply showing all of the possible screens which can be accessed on the GUI. This is mainly helpful when learning to navigate. The shaded block at the top of each menu tree represents the Main Menu which is accessed using the Quick navigation hardware button on the Control Panel or one of the 5 software buttons on the right side of the HOME Page.
  • Page 98 Section 3 Operation ATLAS Series™ POWER Main Menu Faults Meters Service PA Module More PA More PA PA Module Alignment Faults Meters Removal (Auto-Bias) Figure 3-45 Power Amp Menu Structure OUTPUT Main Menu Output Output Output Faults Meters Service Reject Output PA Reject Meters...
  • Page 99 Section 3 Operation ATLAS Series™ POWER SUPPLY Main Menu Faults Meters Service Figure 3-47 Power Supply Menu Structure SYSTEM Main Menu System System System System Control Service Cooling Cooling Cooling System Software Cooling Meters Service Setup Revision Faults Hardware Control Configuration Revision Setup...
  • Page 100 Section 3 Operation ATLAS Series™ 3-40 888-2473-001 2/25/03 WARNING: Disconnect primary power prior to servicing.

  • Page 101: Theory Of Operation

    ATLAS Series™ Section 4 Theory of Operation Introduction This section contains detailed descriptions of the Atlas Series transmitter and its internal sub-assemblies and any pertinent information regarding the external assemblies such as the pump module and heat exchanger. Due to the modular make- up of the transmitter all versions of the Atlas Series transmitter are covered by this manual.

  • Page 102: Active Logic Symbols

    Table 4-1 Atlas Series™ Transmitter Models # of # of PA # of Power Output Block Models Cabinets Modules Supplies Power Phases Diagram # DVL 400 400W 843-5550-195 DVL 800 800W 843-5550-196 DVL 1100 1.1kW 843-5550-197 DVL 1500 1.5kW 843-5550-198 DVL 2200 2.2kW...

  • Page 103: Transmitter Control System

    Section 4 Theory of Operation ATLAS Series™ Transmitter Control System The Atlas Series transmitters utilise a very advanced but simple to use control system. It is a microprocessor, serial communication based software control system but uses backup Life Support logic circuitry and hard wired control lines, allowing the transmitter to be on the air even if the main control system fails.

  • Page 104: Micro Module

    Section 4 Theory of Operation ATLAS Series™ 4.3.1 Micro Module All of the control boards in the transmitter use the 376 Micro Module. The micro module is a daughter board with a standardised interface which is plugged into a motherboard. It contains Flash memory for storage of its programming and SRAM for program execution.

  • Page 105: Cpld, Complex Programmable Logic Device

    Section 4 Theory of Operation ATLAS Series™ 4.3.2 CPLD, Complex Programmable Logic Device The transmitter control boards with the micro module also incorporate a CPLD (Complex Programmable Logic Device) with the exception of the module controllers. The CPLD is not a microprocessor but is actually just programmed discrete logic and is therefore very stable and reliable.

  • Page 106: Controller Area Network (Can) Bus

    Section 4 Theory of Operation ATLAS Series™ 4.3.3 Controller Area Network (CAN) Bus The Controller Area Network or CAN bus is a high speed serial communications link which is used between the transmitter control boards for transmission of control, status, fault and metering information. The CAN bus is distributed as part of the System Control Bus (ribbon cable).

  • Page 107: System Control Bus

    Section 4 Theory of Operation ATLAS Series™ 4.3.4 System Control Bus The System Control Bus is a multi-conductor ribbon cable which distributes the CAN (Controller Area Network) bus and several parallel control lines to all micro- controllers in the system. System Control Bus connection points include: 1.
  • Page 108 Section 4 Theory of Operation ATLAS Series™ a. ON_/OFF This command corresponds to the transmitter operator pushing the "ON" or "OFF" button, thereby turning the transmitter on or off respectively. This sig- nal is high for ON and low for OFF. This is driven only by the Main Control- ler and is a sense only line for the rest of the control boards.

  • Page 109: Main Controller

    Section 4 Theory of Operation ATLAS Series™ g. ALC - Automatic Level Control. The ALC signal is used to control the trans- mitter power output and is normally sent digitally over the CAN bus. This line carries a voltage from the Main Controller to the PA Modules which is an analogue version of the digital ALC signal sent over the CAN bus.

  • Page 110: Serial Connections

    1 serial port, J90, is available for operator connection to run the In-System Programming or ISP software, supplied by Harris, to update the software for the Main Controller and/or any other micro in the transmitter.

  • Page 111: Manual Rf Mute

    Section 4 Theory of Operation ATLAS Series™ Transmitter power will be controlled by the analogue ALC (Automatic Level Control) voltage sent over a discrete line on the System Control Cable to all of the PA modules (normally the ALC value is sent over the CAN bus to control transmitter power).
  • Page 112 Section 4 Theory of Operation ATLAS Series™ 1. On and OFF 2. Raise and Lower 3. Driver A / Driver B Select 4. Pump 1 / Pump 2 Select 5. Driver A / Driver B Status 6. Pump 1 / Pump 2 Status 7.

  • Page 113: External Interlocks

    Section 4 Theory of Operation ATLAS Series™ 4.3.6.1 External Interlocks There are 4 External Interlock terminals provided on J18 which will shut the transmitter off when the circuit is opened. These are primarily to be used for the protection of personnel. The External Interlock circuit requires a closed contact between J18-1 and ground.

  • Page 114: Rf Mute Interlock

    Section 4 Theory of Operation ATLAS Series™ 4.3.6.2 RF Mute Interlock There are 2 more interlock connections on J18 which can be used to apply an RF Mute; instead of a Fault OFF condition as discussed above. These are: • J18-9 to J18-10 •...

  • Page 115: Transmitter Rf System

    For this configuration the DCU consists of a sample coupler for monitoring of the exciter power output. Configuration 2: DVL 400 up to DVL 3000 with Dual Exciters • For this configuration the DCU will include the DCU controller, an RF drive switch with a dummy load for the off-air exciter and two sample couplers.

  • Page 116: Backplane Interface Board

    Section 4 Theory of Operation ATLAS Series™ 4.4.3 Backplane Interface Board The Backplane Interface Board is accessed from the rear of the transmitter and is located just above the PA Module compartment. This board has no active components. Its function is to distribute RF, low voltage and control signals to the PA modules.

  • Page 117: Low Voltage Power Supply Distribution

    Section 4 Theory of Operation ATLAS Series™ 4.4.3.3 Low Voltage Power Supply Distribution The LVPS is distributed to all of the PA Modules and includes: • +7.5Vdc • +15Vdc • -15Vdc For more information on the Low Voltage Power Supplies or LVPS, see "4.5.3 Low Voltage Power Supplies (LVPS)"...

  • Page 118: Phase And Gain Board

    Section 4 Theory of Operation ATLAS Series™ The PA Module is made up of the following components: a. Phase and Gain Board b. Predriver pallet (actually 1/2 of an amplifier pallet) c. Two driver pallets d. Two 4-way RF splitters e.

  • Page 119: Automatic Level Control (Alc)

    Section 4 Theory of Operation ATLAS Series™ Control In-Phase Signal Attenuator Combiner RF Out Hybrid Driver RF Mute Pre-Driver Attenuator Control Output Signal Splitter Input Over-Drive Comparator Envelope Module RF Detector Controller Input Power Sample Adjust Figure 4-4 Phase and Gain Board Block Diagram 4.4.4.2 Automatic Level Control (ALC) Each PA module uses an Automatic Level Control or ALC circuit to keep the...

  • Page 120: Rf Pallets

    Section 4 Theory of Operation ATLAS Series™ 4.4.4.3 RF Pallets The PA module utilises several LDMOS RF amplifier pallets. The pallet is actually made up of 2 push-pull amplifiers with a hybrid splitter on the input and a hybrid combiner on the output. Eight (8) pallets are used as the main power amplifiers or PA pallets, two (2) are used as Driver Pallets and 1/2 of one pallet is used for a Predriver.

  • Page 121: Pallet Splitters And Combiner

    Section 4 Theory of Operation ATLAS Series™ one side of all the pallets and adjust the bias for the desired idle current on the other half of each pallet. Then it will store these settings and repeat the procedure for the other half of the pallets.

  • Page 122: Pa Module Combiner

    6-way and 3-way combiners shown in Figure 4-8 and Figure 4-9 respectively. NOTE: For the DVL 400 which has only one PA module, a combiner is not used. The PA module is connected directly to the transmitter output. 4-22...
  • Page 123 Section 4 Theory of Operation ATLAS Series™ Figure 4-6 8-Way RF System - DVL 3000 and DVL 5700 Figure 4-7 4-Way RF System - DVL 1500 2/25/03 888-2473-001 4-23 WARNING: Disconnect primary power prior to servicing.
  • Page 124 Section 4 Theory of Operation ATLAS Series™ NOTE NOTE *NOTE: Input line length to PA3 and PA6 adjusted due to the fact that 4.77/1.76 hybrids do not have a perfect 90 degree relationship. Figure 4-8 6-Way RF System - DVL 2200 and DVL 4300 NOTE *NOTE: Input line length to PA3 adjusted due to the fact that 4.77/1.76 hybrid does not have a perfect 90 degree relationship.

  • Page 125: Combiner Isolation Loads

    Section 4 Theory of Operation ATLAS Series™ Figure 4-10 2-Way RF System - DVL 800 4.4.5.1 Combiner Isolation Loads The combiner isolation loads are actually 500W or 1kW, 40dB attenuators whose output is taken to the RF Monitor Board for metering and protection. The RF samples are detected by the RF Monitor Board and then minimised by adjusting the module Phase and Gain from the control panel.

  • Page 126: Rf Monitor Board

    Section 4 Theory of Operation ATLAS Series™ Figure 4-11 Combiner Reject Load Locator 4.4.6 RF Monitor Board The RF Monitor Board is located just above the PA Modules in the rear of the transmitter. The RF Monitor is responsible for the following: a.

  • Page 127: Rf Detectors

    Section 4 Theory of Operation ATLAS Series™ 4.4.6.1 RF Detectors There are 2 types of RF detectors used on the RF Monitor Board: • Relative - Used to monitor the reject load power levels. These detectors are very accurate at a calibrated power level, but are not linear across a wide dynamic range.

  • Page 128: Reject Load Rf Detector (Relative)

    Section 4 Theory of Operation ATLAS Series™ 4.4.6.2 Reject Load RF Detector (Relative) The reject load RF detectors are a diode based envelope detector. These detectors are intended to provide relative readings only, not accurate absolute power measurements. The inputs for these detectors come from the 40dB attenuators being used as reject loads for the PA module combiner.
  • Page 129 Section 4 Theory of Operation ATLAS Series™ The comparator fault thresholds are set using "EEPOTS". These are basically programmable electronic potentiometers that are being programmed by the micro module based on the lookup table mentioned above. Example: (Note: The following values are used for example only) At a reference frequency of 600MHz, 50mW of RF input = 3Vdc detected output At a transmitter frequency of 500MHz, 50mW of RF input = 3.4Vdc detected output...

  • Page 130: Precision Rf Power Detectors

    Section 4 Theory of Operation ATLAS Series™ Remember that the default gain setting for the reject load detectors is Low. This means that if all of the modules have the correct insertion phase, the reject load will show minimum reject power on the PA Reject Service screen, and the ADC reading will be very close to zero.

  • Page 131: Power Supplies

    Section 4 Theory of Operation ATLAS Series™ Power Supplies This section covers both the AC and DC portions of the power supply as well as control, protection and monitoring. Actual sub-assemblies involved include: a. PS (Power Supply) Monitor Board b. MOV Board c.

  • Page 132: Low Voltage Power Supplies (Lvps)

    Section 4 Theory of Operation ATLAS Series™ The proper voltage is then obtained from a frequency table in the PS Monitor software and is not directly user adjustable. Nominal operating voltage at the frequency tested can be obtained from the factory test data which shipped with the transmitter.
  • Page 133 Section 4 Theory of Operation ATLAS Series™ 4.5.4.1 S1, PS Monitor Board Configuration Switches There is a PS Monitor board installed in each PA cabinet to control and monitor the supplies and to report back to the Main Controller in the #1 PA Cabinet. Dipswitch S1 has 8 switches, which are used to set the cabinet ID and to configure the board so that it knows how many and what type of supplies it is monitoring.

  • Page 134: Lvps Interface And Cabinet Id

    Section 4 Theory of Operation ATLAS Series™ 4.5.4.2 LVPS Interface and Cabinet ID The PS Monitor Board controls the low voltage power supplies and acts as the distribution point for the low voltage to the rest of the system. If the dual LVPS option is used, then the 2 supplies will be diode or’ed on this board to provide redundancy should one supply fail.

  • Page 135: Ac Line Monitoring

    Section 4 Theory of Operation ATLAS Series™ 4.5.4.4 AC Line Monitoring The PS Monitor board monitors the condition of the incoming 1 or 3 phase AC lines and provides status updates to the main controller via the CAN network. Upon detecting certain conditions, the power supply monitor can activate the /FLT_OFF, /RF_MUTE, /PS_MUTE, or /AC_LOW command based on the fault.
  • Page 136 Section 4 Theory of Operation ATLAS Series™ 4.5.4.5.2 Air Pressure The PS Monitor board monitors the air pressure within the transmitter cabinet. It is a differential pressure sensor that provides a voltage output which is directly proportional to the difference in pressure between the inside of the cabinet and outside the cabinet.
  • Page 137 Section 4 Theory of Operation ATLAS Series™ Table 4-3 PS Monitor, Analogue Measurements and Scaling Ref. # Signal Scale Description Phase A 400vac = 3.0vdc AC Primary voltage Phase B 400vac = 3.0vdc AC Primary voltage Phase C 400vac = 3.0vdc AC Primary voltage Average ac 400vac = 3.0vdc...
  • Page 138 Section 4 Theory of Operation ATLAS Series™ Table 4-4 PS Monitor, LED Indicators LED Number Function Condition Color FLT_OFF Faults Present RF_MUTE Mute PS_MUTE Mute AC_LOW AC line voltage low SPARE_1 Active SPARE_2 Active SPARE_3 Active PA Power Supply 1 Disabled &...

  • Page 139: Cooling System

    Section 4 Theory of Operation ATLAS Series™ Cooling System The Atlas liquid cooling system consists of: a. Pump Module with optional dual pumps in main/alternate mode for redun- dancy and the coolant reserve tank. b. Heat exchanger (usually mounted outside). c.

  • Page 140: Heat Exchanger

    Section 4 Theory of Operation ATLAS Series™ 4.6.2 Heat Exchanger The heat exchanger is a simple 2 fan radiator system where the first fan comes on at a coolant temperature of 32 C and the second fan comes on at 38 C.

  • Page 141: Transmitter Interconnect

    Section 4 Theory of Operation ATLAS Series™ 4.6.4.1 Transmitter Interconnect The pump control panel connects to the transmitter External I/O board. The X2 connector on the Pump Control Box is a pin for pin connection to the J12 connector on the External I/O board. 4.6.4.2 Front Panel Controls The Pump Control Panel has the following controls:...

  • Page 142: Control Voltage Power Supply

    Section 4 Theory of Operation ATLAS Series™ when the panel is in Local mode or is changed from Remote to Local. Press- ing Pump B will change K4 to the opposite position of that shown and will light the Pump B Pre-Set LED H8. It will select Pump B only when the panel is in Local mode or is changed from Remote to Local.
  • Page 143 Section 4 Theory of Operation ATLAS Series™ 4.6.4.4.2 Latching Relay K9 When the transmitter is turned ON, a relay on the External I/O board for Pump A or pump B is closed (depends on the previous operating condition). This supplies the +34Vdc from the control panel back through X2 pin 4 or 5 to latching relay K9.
  • Page 144 Section 4 Theory of Operation ATLAS Series™ 4.6.4.4.6 K7, Interlock Relay The transmitter always has final control over the pump module via K7, the Interlock Relay. There is an interlock control relay located on the External I/O Board in the transmitter which must be closed for the pump module to operate.
  • Page 145 Section 4 Theory of Operation ATLAS Series™ 4.6.4.4.8 Pump A Control and Status When K1 is activated it closes the 2 paralleled contacts which supply 24Vac to X3 pin 1 and Contactor K3 coil. K3 will only be activated if the transmitter pump interlock line is pulled low activating K7 (to opposite of position shown) and the coolant fault relay K8 is relaxed (in the position shown) applying 24Vac to X4 pin 1.
  • Page 146 Section 4 Theory of Operation ATLAS Series™ 4-46 888-2473-001 2/25/03 WARNING: Disconnect primary power prior to servicing.

  • Page 147: Maintenance And Alignments

    BARE HANDS AFTER THE TRANSMITTER HAS BEEN RUNNING, ESPECIALLY IN HIGH AMBIENT TEMPERATURE ENVIRONMENTS. SPECIAL GLOVES HAVE BEEN PROVIDED IN THE REAR OF THE CABINET OR CAN BE OBTAINED FROM HARRIS, PART #0990006483 OR GRAINGER ITEM #4JF36. HEAVY WEIGHT THE PA MODULE WEIGHS APPROXIMATELY 21KG AND CAN BE AWKWARD TO HANDLE.

  • Page 148: Pa Module Removal

    Section 5 Maintenance and Alignments ATLAS Series™ 5.2.1 PA Module Removal PA Modules can be removed (or installed) while the transmitter is turned on, but the module needs to be shut off via the GUI (Graphical User Interface) first. To make sure the PA module being removed is shut off, go to the STEP 1 Power Amp Service screen in Figure 5-1, using the key presses shown below.

  • Page 149: Installing A Pa Module

    Section 5 Maintenance and Alignments ATLAS Series™ CAUTION: DO NOT LET THE MODULE SWING DOWN WHEN PULLING THE MODULE OUT WITH THE FRONT HANDLE. THIS COULD CAUSE SEVERE DAMAGE TO THE CONNECTORS ON THE BACK OF THE MODULE. Grab the handle on the front of the module and slide it out about STEP 6 halfway.

  • Page 150: Pa Module Auto Bias Procedure

    Section 5 Maintenance and Alignments ATLAS Series™ PA Module Auto Bias Procedure Due to natural drift of LDMOS devices with age, periodic re-biasing of the pallets within the modules is recommended. However, this procedure has been automated and is done with the press of a button, and only takes a few seconds. The schedule for this procedure is as follows: •...

  • Page 151: Pa Module Phasing

    Section 5 Maintenance and Alignments ATLAS Series™ PA Module Phasing Due to the use of a hybrid combining system, each pair or group of modules being combined has a 90 relationship. This requires adjustment to the phase of individual modules and module groups while watching the power at each of the reject loads and adjusting for a minimum reading.

  • Page 152: Module Phasing Procedure

    Section 5 Maintenance and Alignments ATLAS Series™ 5.4.2 Module Phasing Procedure GOAL: Get all reject load power level readings below 0030 with the GAIN button set to "LOW" (or under 0100 with the GAIN button set to "HIGH"). (A secondary goal would be to leave all modules as close to a 0512 phase reading as possible, although this is not required and will not actually improve performance).

  • Page 153: Power Calibrations

    Section 5 Maintenance and Alignments ATLAS Series™ Power Calibrations Other than for installation, power calibration should only be required if the controller containing the calibration settings is replaced, or if a directional coupler is replaced. However, calibration is very simple and can be done whenever it is deemed necessary.

  • Page 154: Forward Power Calibration

    Section 5 Maintenance and Alignments ATLAS Series™ 5.5.1 Forward Power Calibration This procedure is used to calibrate the output sample from the precision forward power directional couplers to display the correct power level on the GUI. Remove the sample cable from the directional coupler to be STEP 1 calibrated.

  • Page 155: Dcu Calibration

    Section 5 Maintenance and Alignments ATLAS Series™ 5.5.3 DCU Calibration The Drive Control Unit or DCU has a forward power directional coupler for each exciter to measure exciter power output. This power reading shows up on the Drive Meters screen in Figure 3-6 on page 3-8. This screen is used to calibrate the display readings.

  • Page 156: Lcd Contrast Adjustment

    Section 5 Maintenance and Alignments ATLAS Series™ LCD Contrast Adjustment The contrast of the LCD display can be adjusted by accessing the Control Setup screen shown in Figure 5-7. Touch the white text box for the LCD Contrast and a pop up window will appear to allow the setting to be adjusted.

  • Page 157: Touch Screen Calibration

    Section 5 Maintenance and Alignments ATLAS Series™ Touch Screen Calibration If the touch screen soft buttons on the GUI are working and seem to be accurate, then this procedure is not required. If the soft buttons on the touch screen do not seem to work or can only be activated by pressing outside the button graphic, then a simple touch screen calibration will have to be done as follows: The touch screen calibration is accessed from the Control Setup...

  • Page 158: V-Xcast Exciter Adjustments

    Section 5 Maintenance and Alignments ATLAS Series™ Figure 5-8 Touchscreen Calibration Screens Figure 5-9 Touchscreen Calibration Test Screen V-XCAST Exciter adjustments For all adjustments to the V-XCAST exciter, refer to the manual which came with the exciter. Main Controller Battery Check A 3V Lithium battery, BT1, is fitted on the Main Controller PCB for the Real Time Clock.

  • Page 159: Introduction

    ATLAS Series™ Section 6 Diagnostics Introduction This section contains diagnostic and troubleshooting information for the Atlas Series UHF transmitter. Included is a complete description of all faults which can be displayed via the transmitter front panel display or GUI (Graphical User Interface). Due to the complexity of the control system and the extensive use of surface mount components, the scope of this diagnostics section is to isolate the problem down to a PC board or module which can then be easily exchanged.

  • Page 160: Gui System Log

    Section 6 Diagnostics ATLAS Series™ GUI System Log The GUI contains a System Log which is a listing of all faults which have occurred. To see the System Log press SYSTEM then SYSTEM LOG. This will bring up the screen in Figure 6-1. The System Log gives the following information: a.

  • Page 161: Fault Tables

    Section 6 Diagnostics ATLAS Series™ Fault Tables The following tables provide a listing of Atlas Transmitter faults along with a brief description, the fault level or threshold and the action taken by the transmitter. Table 6-1 Atlas Transmitter Fault List TYPE Description Fault Level or Threshold...
  • Page 162 Section 6 Diagnostics ATLAS Series™ Table 6-1 Atlas Transmitter Fault List TYPE Description Fault Level or Threshold Transmitter Three Action Strike Fuse 1 Fuse failed on MOV FUSE OPEN WARNING board Fuse 2 Fuse failed on MOV FUSE OPEN WARNING board Fuse 3 Fuse failed on MOV...
  • Page 163 See Cooling System Layout Warning for 5 the minimum Liters per Diagram: seconds, then switch minute (lpm) flow rate 843-5550-170 for DVL 400 - pumps. If still no flow under normal operation DVL 3000 for 5 more seconds, 843-5550-213 for DVL 4300...
  • Page 164 Section 6 Diagnostics ATLAS Series™ Table 6-2 Atlas PA Module Fault List TYPE Description Fault Level or Threshold Transmitter Three Action Strik M# Pallet 1 Module #1-8 One LDMOS failure when pallet 1 or 2 failures M# Pallet 2 Pallet #1-8 LDMOS current is less than 60% of the gives a M# Pallet 3...
  • Page 165 Section 6 Diagnostics ATLAS Series™ Table 6-2 Atlas PA Module Fault List TYPE Description Fault Level or Threshold Transmitter Three Action Strik M# +12V Fail Module #1-8 +/-20% Normal DAC reading = WARNING +12Vdc Regulator Failed M# -12V Fail Module #1-8 +/-20% Normal DAC reading = WARNING -12Vdc Regulator...
  • Page 166 Section 6 Diagnostics ATLAS Series™ Table 6-2 Atlas PA Module Fault List TYPE Description Fault Level or Threshold Transmitter Three Action Strik M# In Overdrv Module #1-8 Module RF drive input level has MODULE OFF RF Input Over- been exceeded Drive M# Out Overdrv Module #1-8...

  • Page 167: Parts List Index

    Parts List Replaceable Parts List Index Table 7-1. XMTR, DVL 3000 ..... . . 994 9905 001 Table 7-2. 3 PHASE MOV PKG (WYE) ....917 2550 155 Table 7-3.
  • Page 168 Table 7-1. XMTR, DVL 3000 - 994 9905 001 Harris PN Description QTY UM Reference Designators (M) 484 0554 000 *FILTER, BANDPASS 7.0KW UHF 0.0 EA (1 REQD) (USED WHEN VENDOR TERACOM IS SPECIFIED) LAST THREE DIGITS OF PART NUMBER IS DETERMINED BY FILTER...
  • Page 169 Table 7-3. PWA, MOV/AC SAMPLE, 3 PH - 992 7275 001 Harris PN Description QTY UM Reference Designators (K) 000 0000 010 B/M NOTE: 1.0 EA DO NOT POPULATE AT THIS TIME J2 350 0105 000 RIVET 3/16 ALUM .126/.25 8.0 EA...
  • Page 170 PWA, DCU CONTROLLER 1.0 EA 992 7299 001 PWA, DCU DIRECTIONAL COUPLER 2.0 EA DC1 DC2 Table 7-6. PWA, DCU CONTROLLER - 992 7295 001 Harris PN Description QTY UM Reference Designators (D) 310 0036 000 WASHER, FLAT .097 ID 2.0 EA...
  • Page 171 Table 7-10. CABINET, BASIC DVL 3000 - 994 9905 002 Harris PN Description QTY UM Reference Designators (BM) 007 4020 025 BRZ, FGR, STK, 97-440 7.0 EA 3#PA ENCLOSURE 4#PS MODULE SLOT 041 1310 001 GASKET, RUBBER 6.0 FT #VICOR AIR SEAL...
  • Page 172 629 0093 000 SENSOR, LIQUID LEVEL, FLOAT 1.0 EA 646 1694 100 LABEL, DVB 1.0 EA 646 1698 000 NAMEPLATE, DOMED, HARRIS LOGO 1.0 EA 646 1698 100 NAMEPLATE, DOMED, ‘ATLAS’ 1.0 EA 646 1709 000 PLATE, RATING, ATLAS 1.0 EA...
  • Page 173 Table 7-11. PA MODULE - 992 7247 001 Harris PN Description QTY UM Reference Designators (U) 007 4050 021 BRZ, FINGERS TWIST 97-555 1.0 FT 007 4060 084 BRZ, PH FGR STOCK 3 EA 250 0598 000 RECP, 2 DUAL LUG W/GND 1.0 EA...
  • Page 174 Table 7-12. PWA, UHF BROADBAND PALLET - 992 7245 001 Harris PN Description QTY UM Reference Designators (A) 380 0819 000 XSTR, BLF861A LDMOS 2.0 EA Q001 Q002 843 5549 011 SCH, UHF BROADBAND PALLET 0.0 EA 992 7245 002 PWA, UHF BROADBAND PA 1.0 EA...
  • Page 175 Table 7-16. PWA, 376 MICRO MODULE - 992 7203 001 Harris PN Description QTY UM Reference Designators (J) 381 0029 000 N-MOSFET, 2N7002 SMT 3.0 EA Q1 Q2 Q3 383 0126 000 *IC MAX705/ADM705 1.0 EA U7 383 0166 000 IC, 71024/7C109/6226 2.0 EA...
  • Page 176 843 5549 041 SCH, PREDRIVER 1.0 EA 992 7251 002 PWA, PREDRIVER 1.0 EA Table 7-19. PWA, PREDRIVER - 992 7251 002 Harris PN Description QTY UM Reference Designators (D) 620 3182 000 JACK, SMA, STRAIGHT 4.0 EA J1 J2 J3 J4...
  • Page 177 Table 7-23. PWA, POWER SUPPLY MONITOR - 992 7256 001 Harris PN Description QTY UM Reference Designators (D) 055 0100 005 *THERMAL COMPOUND, 8OZ JAR 0.0 EA 086 0001 010 *SEALANT GLYPTOL 0.0 QT 303 4103 008 SCREW, MACH M3-0.5 X 8 4.0 EA...
  • Page 178 Table 7-25. PWA, 8 WAY BACKPLANE INTERFACE - 992 7266 001 Harris PN Description QTY UM Reference Designators (E) 358 3383 000 JUMPER, 0.1" LG, 0.125" H 1.0 EA 408 0351 000 SHIELD, RF 1.0 EA 610 0828 000 HEADER, 26 PIN PC RIBBON 2.0 EA...
  • Page 179 PWA, 376 MICRO MODULE 1.0 EA 992 7302 006 *SMT, MAIN CONTROLLER 1.0 EA A5A1 Table 7-29. ASSY, PWR SUPPLY, 3 PHASE - 992 7274 001 Harris PN Description QTY UM Reference Designators (G) 250 0550 018 RECP, 4 MALE 1.0 EA 250 0550 019 STRAP, 2 FEMALE/LUG (5/16")
  • Page 180 992 7203 001 PWA, 376 MICRO MODULE 1.0 EA 992 7302 009 *SMT, EXTERNAL I/O 1.0 EA Table 7-31. PWA, AIR PRESSURE SENSOR - 992 7302 007 Harris PN Description QTY UM Reference Designators (B) 2522-178-15065 SCREW, PNPZ ST18-8 M3X20 2.0 EA...

This manual is also suitable for:

Atlas dvl1100Atlas dvl3000Atlas dvl4300Atlas dvl800Atlas dvl5700Atlas dvl1500 ... Show all

Table of Contents