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Broadcast Electronics 4MX 100 Manual

100kw am transmitter
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Broadcast Electronics Inc.
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4100 North 24
Street, Quincy, Illinois 62305 USA • Phone (217) 224-9600 • Fax (217) 224-9607 • www.bdcast.com • bdcast@bdcast.com
4MX 100
100kW AM Transmitter Manual
597-4100, Revision B
3/13/07

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  • Page 1 Broadcast Electronics Inc. 4100 North 24 Street, Quincy, Illinois 62305 USA • Phone (217) 224-9600 • Fax (217) 224-9607 • www.bdcast.com • bdcast@bdcast.com 4MX 100 100kW AM Transmitter Manual 597-4100, Revision B 3/13/07...
  • Page 2 The information in this publication is subject to improvement and change without notice. Although every effort is made to ensure the accuracy of the information in this manual, Broadcast Electronics Inc. accepts no responsibility for any errors or omissions. Broadcast Electronics Inc. reserves the right to modify and improve the design and specifications of the equipment in this manual without notice.
  • Page 3 RF PRODUCT TECHNICAL ASSISTANCE, REPAIR SERVICE, REPLACEMENT PARTS - Technical assistance is available from Broadcast Electronics by letter, prepaid telephone, fax, or E- mail. Equipment requiring repair or overhaul should be sent by common carrier, prepaid, insured, and well protected. If proper shipping materials are not available, contact the Customer Service Department for a shipping container.
  • Page 4 WARRANTY ADJUSTMENT - Broadcast Electronics, Inc. warranty is included in the Terms and Conditions of Sale. In the event of a warranty claim, replacement or repair parts will be supplied F.O.B. factory. At the discretion of Broadcast Electronics, the customer may be required to return the defective part or equipment to Broadcast Electronics, Inc.
  • Page 5 WITH INADEQUATE LIGHTNING / AC SURGE PROTECTION, DEFECTIVE TRANSMISSION LINE SYSTEM, OR CONNECTION TO AN IMPROPER AC INPUT. The transmitter is covered by a two year limited product warranty from Broadcast Electronics, Inc. However, the transmitter must be properly installed at a site with adequate Lightning / AC Surge protection, transmission line system or load capable of handling the Transmitter’s RF Output power,...
  • Page 6 TRANSMITTER WITH TEST EQUIPMENT CONNECTED TO THE TRANSMITTER’S OUTPUT NETWORK, RF POWER MODULE, RF COMBINER, OR POWER SUPPLY COMPONENTS. Broadcast Electronics, Inc.’s AM transmitters contain high voltages and currents. If safety precautions are not practiced, contact with high voltages and currents could cause serious injury or death. The transmitter is equipped with many built-in safety features, however good judgment, care, and common sense must be practiced to prevent accidents.
  • Page 7 Additional information follows. E. RF BURNS - Circuit boards with RF power transistors contain high RF potentials. Do not operate an RF power module with the cover removed. ©2007 Broadcast Electronics Inc.
  • Page 8 All hot surfaces may remain hot for an extended time after the tube is shut off. To prevent serious burns, take care to prevent and avoid any bodily contact with these surfaces both during and for a reasonable cooling down period after tube operation. ©2007 Broadcast Electronics Inc.

  • Page 9: Table Of Contents

    1.7 4MX 100 PA and PS Module Locations ............3 1.8 Items Required for Installation ..............4 1.8.1 Tools / Items Required for Installation (not supplied with 4MX 100) ..4 1.8.2 Installation Kit Items (977-4101 – supplied with 4MX 100)....4 1.8.3 Surge Suppressor (supplied with 4MX 100) .........
  • Page 10 2.16.2 Enter the Chief Engineer’s Password..........38 2.16.3 Set the Initial RF Output Power Level ..........39 2.16.4 Turn the 4MX 100’s RF Output Power ON (without Modulation) ..39 2.16.5 PA Diagnostics .................. 40 2.16.6 Power Supply Diagnostics ..............41 2.16.7 Turn the Transmitter’s RF Output Power OFF ........
  • Page 11 4.3 Check AC Terminal Block Connections ............86 Repair / Replacement ................87 5.1 Power Amplifier Module Replacement ............87 Prepare to Replace the 4MX 100 PA Motherboard ......94 6.1 Tools / Items Needed................. 94 6.2 Estimated Time for Replacement..............94 Replacing a 4MX 100 PA Motherboard ..........
  • Page 12 11.5 Disconnect Cabling from the Controller PCB .......... 131 11.6 Remove the Controller PCB Mounting Hardware........131 11.7 Remove the System Controller PCB Assembly from the 4MX 100 ... 132 11.8 Send the old Controller PCB Assembly to Broadcast Electronics, Inc..133 11.9 Install the new Controller PCB Assembly into the 4MX 100 ....
  • Page 13 11.14 Install the Remote I/O Access Panel ............137 11.15 Install Front Door Hardware ..............138 11.16 Turn the 4MX 100 AC Breaker ON ............138 11.17 Reprogramming Controller PCB Settings..........139 11.18 Turn the RF Output Power ON ............. 139 12 Upgrading 4MX Software via an I.P.

  • Page 14: Preparing For Installation

    Environmental Requirements The 4MX 100 is designed to operate in an ambient air temperature range of 0˚ - 122˚ Fahrenheit (0˚ to +50˚ Celsius) with 0 - 95% non-condensing humidity at 0 - 10,000 feet (0 - 3,048 meters) above sea level.
  • Page 15 Figure 1 – 4MX 100 Installation Drawing ©2007 Broadcast Electronics Inc.

  • Page 16: 4Mx 100 Pa And Ps Module Locations

    49-64 Figure 2 – 4MX 100 Front View (PA Module Locations) Main Auxiliary Cabinet Cabinet Modules Modules 1-32 33-64 Terminal Blocks for Primary AC Connections Figure 3 – 4MX 100 Rear View (Power Supply Module Locations) ©2007 Broadcast Electronics Inc.

  • Page 17: Items Required For Installation

    Surge Suppressor (supplied with 4MX 100) 1.8.3 4MX 100 AM Transmitters come with an AC Surge Protector. Depending upon your site’s requirements, one of the following will arrive with your shipment. 959-4031-001, AC Surge Protector, 380V, WYE, 4 Wire + Ground 959-2020-001, AC Surge Protector, 480V, WYE, 4 Wire + Ground ©2007 Broadcast Electronics Inc.

  • Page 18: Installation And Setup

    2 Installation and Setup Locate the Transmitter The 4MX 100 transmitter is designed with access holes in the top of the cabinet to allow for overhead routing of AC Power, RF Output line, and control wiring. The transmitter room floor must be level and capable of supporting the total transmitter weight.

  • Page 19: Bolt The Main And Auxiliary Cabinets Together

    Bolt the Main and Auxiliary Cabinets Together The 4MX 100 Transmitter is shipped in (2) cabinets (Main and Auxiliary). The cabinets must be bolted together as shown below using the supplied hardware. Align cabinets and install hardware per detail (38 places)

  • Page 20: 4Mx 100 Output Network Capacitor Banks

    Capacitors banks are removed from the 4MX 100’s Output Network in each of the cabinets prior to shipment and must be reinstalled. NOTE: All Capacitor Banks are heavy and (2) people are required to install them into the 4MX 100 Transmitter! Capacitor Bank –...

  • Page 21: Install The Main Cabinet Capacitor Bank C4

    Step 3 – Using a 7/16” Nut Driver or Wrench remove the connection hardware from C4. Make the connection from L7 and re-install the hardware as shown. Ensure that all hardware is properly tightened! Figure 7 – Main Cabinet Capacitor Bank C4 Installation (Rear of 4MX 100) ©2007 Broadcast Electronics Inc.

  • Page 22: Install The Main Cabinet Capacitor Bank C3

    (14) places located along the back edge of the base plate of C3 NOTE: Number of CAPS in Bank is Dependent upon Frequency. Main Cabinet Capacitor Bank – C3 Figure 8 – Main Cabinet Capacitor Bank C3 Installation ©2007 Broadcast Electronics Inc.

  • Page 23: Install The Auxiliary Cabinet Capacitor Bank C2

    NOTE: Number of CAPS in Bank is Dependent upon Frequency. Auxiliary Cabinet Capacitor Bank – C2 Route cable down through shelf as shown (connects to Back Side of C1) Figure 9 – Auxiliary Cabinet Capacitor Bank C2 Installation ©2007 Broadcast Electronics Inc.

  • Page 24: Capacitor Bank C1, L1, L2, L3 & L4 Locations

    Capacitor Bank C1 is mounted across the middle rear of both the Main and Auxiliary Cabinets of the 4MX 100. C1 is installed in sections and then tied together with hardware and a “Joiner Plate” on the back side. After Installing C1 into each of the cabinets, connections will be made from L1, L2, L3, L4, and C2.
  • Page 25 To L1 (Aux Cabinet) To L2 (Aux Cabinet) To L3 To L4 Figure 11 – C1 Electrical Connections (View After Assembly inside of Cabinet behind C1 - looking from the Main Cabinet though to the Auxiliary Cabinet) ©2007 Broadcast Electronics Inc.

  • Page 26: Install Main And Auxiliary Cabinet Capacitor Bank C1

    Install Main and Auxiliary Cabinet Capacitor Bank C1 2.4.5 NOTE: All Capacitor Banks are heavy and (2) people are required to install them into the 4MX 100 Transmitter! Main Auxiliary Cabinet Cabinet Capacitor Capacitor Bank - C1 Bank – C1...

  • Page 27: Install Inner C1 Cap Bank Sections

    (see Detail A ). (See Figure 14 for additional detail Use a No. 2 Phillips screwdriver to tighten. regarding the joiner plate). Detail A Figure 13 – Main and Auxiliary Cabinet Capacitor Bank C1 Installation ©2007 Broadcast Electronics Inc.

  • Page 28: C1 "Joiner Plate" Detail

    C1 – Auxiliary Cabinet (Copper Plate) View B-B NOTE: Use a No. 2 Phillips Screwdriver through the access holes in the panel to tighten the joiner plate hardware (5) places! Figure 14 – Joiner Plate Installation ©2007 Broadcast Electronics Inc.

  • Page 29: Install Outer C1 Cap Bank Sections

    This hardware ties the copper sections together on the back side of the C1 Cap Bank sections. Use a 5/16” Wrench or Nut driver to tighten. Figure 16 – Back Side of C1 Cap Bank(s) Copper Plate Hardware Connections ©2007 Broadcast Electronics Inc.

  • Page 30: Capacitor Bank C1 To L1, L2, L3, & L4 Connections

    To L4 in Main Cabinet To L3 in Main Cabinet To L1 & L2 in Auxiliary Cabinet Figure 17A – C1 Joiner Plate and Electrical Connections (View looking at the Rear of the transmitter through C1!) ©2007 Broadcast Electronics Inc.
  • Page 31 Figure 17B – C1 Electrical Connections (View looking at back side of C1 inside the transmitter!) Step 2 – Double check all of the C1 Capacitor Bank’s installation and connection hardware to ensure that it has been properly tightened before proceeding. ©2007 Broadcast Electronics Inc.

  • Page 32: Route / Connect Power And Fan Interconnect Cabling

    Route / Connect Power and Fan Interconnect Cabling Before shipment of the 4MX 100, Main to Auxiliary Cabinet interconnect cabling for AC Power, 18VDC, and the cooling Blowers were disconnected. After disconnection, these cables were then bundled for shipment in the bottom of each of the cabinets.
  • Page 33 Route (3) Connector Cables from the Main Auxiliary Cabinet into the Auxiliary Cabinet as shown Cabinet and connect. Tyrap cables as needed. Figure 20 – 4MX 100, 18V, and Fan Interconnect Cable Routing and Connections (Rear View of Auxiliary Cabinet) ©2007 Broadcast Electronics Inc.

  • Page 34: Route / Connect The Multiplexer Interconnect Cabling

    Step 1 – Remove the Multiplexer Step 4 – Route the Multiplexer Access Panel from the Main cables from the Upper and Lower Cabinet of the 4MX 100 Right Auxiliary Cabinet PA cavities through the cabinet cutouts and (see Figures 22 and 23 for...
  • Page 35 (Typical Top and Bottom PA Cavities in Auxiliary Cabinet) P1, P2, P3 (from lower PA’s in Auxiliary Cabinet) P4, P5, P6 Figure 24 – Multiplexer Cable Routing From Auxiliary Cabinet / Connections in Main Cabinet ©2007 Broadcast Electronics Inc.

  • Page 36: Earth Ground To 4Mx 100 Chassis Connection

    Earth Ground to 4MX 100 Chassis Connection The 4MX 100 ground system requires the connection of an earth ground to the 4MX 100 chassis. Refer to Figure 25 and connect an earth ground from the AC Service Entrance to the RF Output flange using the supplied Earth Ground Strap (463-5600) and customer supplied grounding strap as shown.

  • Page 37: Rf Output Transmission Line Connection

    RF Output Transmission Line Connection The 4MX 100 transmitter RF output connection is 4-1/16 inch, 50 Ohm, EIA, Male, and is located in the top of the cabinet. This connection is a Clamp Type Flange Adapter with a fixed bullet as shown in Figure 26.

  • Page 38: Primary Ac Power Source Voltage And Configurations

    Primary AC Power Source Voltage and Configurations The 4MX 100 was designed to operate specifically from the AC Power Source listed below. 400VAC (332-460VAC), 50 / 60 Hz, 3-Phase, WYE, 4 Wire The following figure represents an acceptable AC Power Source transformer topology.

  • Page 39: 4Mx 100 Ac Input Recommended Disconnect Fuse And Wire Sizes

    300 KCMIL 350 KCMIL 350 KCMIL 400 KCMIL 400 KCMIL 240A 250A 250 KCMIL 300 KCMIL 300 KCMIL 300 KCMIL 300 KCMIL Figure 29 – 4MX 100 AC Primary AC Input Disconnect Fuse and Wire Size Charts ©2007 Broadcast Electronics Inc.

  • Page 40: Installing The Ac Surge Suppressor

    Installing the AC Surge Suppressor 2.11 Included in the 4MX 100 shipment from Broadcast Electronics, Inc. is an AC Surge Suppressor device. This device MUST be installed for over voltage protection at the AC service entrance of the transmitter building before AC Power is applied to the transmitter. Please adhere to the installation instructions included with the Surge Suppressor device.
  • Page 41 Chassis Ground Lug (lower right corner of box) Phase #3 (L3) Alarm Relay Connections Phase #1 (L1) Phase #2 (L2) Neutral Ground (only connected on 400V WYE) Figure 31 – Typical AC Surge Suppressor Device Connections ©2007 Broadcast Electronics Inc.

  • Page 42: Connecting Ac Power To The 4Mx 100 Transmitter

    Connecting AC Power To The 4MX 100 Transmitter 2.12 The primary AC Power Source wiring enters the 4MX 100 cabinet through the top and runs down through an internal conduit to the main AC terminal blocks. Step 1 – Insert the AC Power cables into the provided entry location in the top of the cabinet.
  • Page 43 Use 3/8” Hex Drive or Allen Wrench to Tighten AC Terminal Blocks Chassis Ground LUG - Connect Earth / Main AC Service Entrance Breaker Box Chassis Ground here Figure 35 – 400VAC, 3 Phase, WYE, 4 Wire ©2007 Broadcast Electronics Inc.

  • Page 44: Install Rear Doors

    Bolt retracts. NOTE: The lower Auxiliary Cabinet Rear Door WILL NOT be able to be re-installed until the Key is inserted into the Bolt Lock and the Bolt is retracted! Figure 36 – Rear Door Installation ©2007 Broadcast Electronics Inc.

  • Page 45: Remote Interlock And Failsafe I/O Connections

    Installation Kit) 2 turns Panel as shown Step 5 – Make connections to Remote Control I/O Board (see Figure 33 for pin outs) Figure 38 – Remote Control I/O and Audio Input Access Panel ©2007 Broadcast Electronics Inc.
  • Page 46 Remote INTERLOCK and FAILSAFE Inputs Figure 39 – Remote I/O Terminal Block Pin Outs ©2007 Broadcast Electronics Inc.
  • Page 47 Included in the remote device I/O connections, is an INTERLOCK and a FAILSAFE connection. These connections are provided for safety to protect not only the 4MX 100 transmitter but service personnel as well who may be working on the transmitter or the transmission system.

  • Page 48: Interlock (Tb2-4)

    2) The front panel FAULT indicator below the GUI will also turn RED. Once the FAILSAFE circuit is closed the transmitter RF Output will remain OFF, but may now be turned ON. IMPORTANT - The remote FAILSAFE circuit MUST be closed or the transmitter will not operate! ©2007 Broadcast Electronics Inc.

  • Page 49: Turning On Ac Power

    Breaker ON. Turn ON the 4MX 100 Transmitter AC Breaker 2.14.3 Next, turn the 4MX AC Breaker to its ON position. AC Breaker shown in ON position Figure 41 – 4MX 100 Rear Panel AC Breaker ©2007 Broadcast Electronics Inc.

  • Page 50: Initial System Checkout

    RED when a fault occurs. 2.15.4 PHASE 1, PHASE 2, and PHASE 3 These indicators are used to monitor the three AC Phases and will illuminate GREEN. If a Phase is lost, the indicator for that Phase will extinguish. ©2007 Broadcast Electronics Inc.

  • Page 51: Initial Rf Output And Connection Of The Audio Source

    Click the LOG IN button and the Log In Menu will appear. Figure 43 – Main GUI Menu Enter the Chief Engineer’s Password 2.16.2 Next, enter the Chief Engineer’s default password, 123456, and press ENTER. Figure 44 – Log In Menu ©2007 Broadcast Electronics Inc.

  • Page 52: Set The Initial Rf Output Power Level

    Next, select a preset Power Level that is ≤ 10.0 kW. Figure 45 – RF Output Power Control Menu Turn the 4MX 100’s RF Output Power ON (without Modulation) 2.16.4 Ensure that the Audio Source is NOT yet connected.

  • Page 53: Pa Diagnostics

    Ensure that all of the PA Modules that are ON are GREEN with No Faults. NOTE: In a 4MX 100, all 64 PA Modules will not be ON unless the RF Output Power Level is set for ≥ 20kW; @ 5kW – 19.99kW 32 PA Modules will be ON (9-24 &...

  • Page 54: Power Supply Diagnostics

    Ensure that all of the Power Supply Modules are ON (GREEN) with No Faults. NOTE: In a 4MX 100, all 64 Power Supply Modules will not be ON unless the RF Output Power Level is set for ≥ 20kW; @ 5kW – 19.99kW 32 PS Modules will be ON (9-24 &...

  • Page 55: Turn The Transmitter's Rf Output Power Off

    Proceed with connecting the Audio source to the 4MX 100. The Audio Inputs enter the 4MX 100 through the top of the cabinet in the same location as the remote control connections. The Audio Inputs then route down through the cabinet to the Audio Input terminal block.

  • Page 56: Audio Setup Menu

    Figure 53 – Audio Setup Menu 2.16.9.1 Set the active Audio Input The 4MX 100 audio input type can be set for either a PRIMARY or a BACKUP audio input source. This selection may be made on the right side of the Audio Menu by depressing either the SELECT PRIMARY or SELECT BACKUP buttons.
  • Page 57 From the AUDIO SETUP menu select LOWER AUDIO or RAISE AUDIO and set the Audio Gain to 40%. Next, select BACK to return to the Main Menu. Audio Gain Level Indicator Audio Gain Level Adjustment Buttons Figure 55 – Audio Setup Menu ©2007 Broadcast Electronics Inc.

  • Page 58: Turn The Audio Source On

    Audio Fault occurs. Led DS31 will blink on/off as the audio level starts hitting the A/D upper limit. The Main Menu should appear as shown below with the AUDIO Block and a Warning Note highlighted in red. Figure 57 – Audio Fault ©2007 Broadcast Electronics Inc.
  • Page 59 To turn the transmitter’s RF Output Power ON, select either the XMTR ON from the Main GUI Menu, or depress the ON button on the front of the transmitter. Ensure that the Transmitter has no Faults and/or Alarms. -OR- Figure 59 – Turning RF Output Power ON ©2007 Broadcast Electronics Inc.
  • Page 60 There should not be any Faults or Alarms relating to Audio now. If there are, see the following Audio Troubleshooting section. If the transmitter is running properly, go to the POWER menu and raise the RF Output Power to the desired level. ©2007 Broadcast Electronics Inc.

  • Page 61: Audio Troubleshooting

    1/8 of a turn. Step 3 - Press the FAULT RESET button on the front of the transmitter to clear the fault. Step 4 - If the fault still exists, repeat the process until the Fault clears. ©2007 Broadcast Electronics Inc.

  • Page 62: Audio Fault (Too Much Gain Or Over Modulation

    Step 4). Step 3 - Adjust R133 on the DSP Controller Board Clockwise (SLOWLY) to obtain the desired modulation level. Step 4 – Raise the Audio level from the Audio Menu to the desired level. ©2007 Broadcast Electronics Inc.

  • Page 63: Operation

    3 Operation Overview The 4MX 100 consists of 64 Power Amplifier (PA) and 64 Power Supply (PS) modules in a one to one relationship. The PA’s are located in two bays across the front of the transmitter and the power supplies are accessible from the back. The power supplies provide a 400V bulk voltage to the PA’s.

  • Page 64: Switches And Indicators

    FAULT RESET Indicator Switch / Indicator Figure 63 – 4MX 100 Front Panel GUI, Switches, and Indicators 3.2.1 This Switch / Indicator is used to turn the RF Output Power ON. Upon initial AC power up it will be off until pressed to turn the RF Output power ON, then it will illuminate GREEN.

  • Page 65: Graphical User Interface

    Upon AC power up of the transmitter, the main GUI menu displays a rudimentary block diagram of the 4MX 100 and key transmitter parameters such as modulation and frequency. There are also indicators that will appear on this menu for important alarms or faults.

  • Page 66: Graphical User Interface Sub-Menus

    Default User Classification and Password 3.4.1 For security purposes the 4MX 100 has two classifications of users by default, Chief Engineer and Operator. Users who login as Chief Engineer have total control over critical transmitter parameters. The Operator login, however, has limited access to make system changes. The Operator can not make changes in the Audio and Password Setup Menus.

  • Page 67: Log Out

    When the AUTO LOGOUT option is enabled, if the GUI is not used for 15 minutes, the GUI will go into screen save mode and the user will be automatically logged out. Figure 66 – Logout Menu ©2007 Broadcast Electronics Inc.

  • Page 68: Password Protection

    When password protection is Disabled, the system will be as if the Chief Engineer is logged in permanently. DISABLE PASSWD should only be used when no user protection is desired. To Enable password protection simply select the ENABLE PASSWD button. ©2007 Broadcast Electronics Inc.
  • Page 69 To change the Operator’s Password, select the CHG OPER PASSWD button and the screen shown in Figure 69 will appear. Enter the new password (must be 4, 5, or 6 digits) and press ENTER. Figure 69 – Edit Operator Password Menu ©2007 Broadcast Electronics Inc.

  • Page 70: Time / Date / Ip Setup

    Figure 70 – Time / Date / IP Setup Menu 3.4.5.1 IP Address Entry Menu Use the numeric keypad to enter the IP Address that you want to assign to the 4MX 100 Transmitter. Figure 71 – IP Address Entry Menu...

  • Page 71: Subnet Mask Entry Menu

    3.4.5.2 Subnet Mask Entry Menu Use the numeric keypad to enter the Subnet Mask that you want to assign to the 4MX 100 Transmitter. Figure 72 – Subnet Mask Entry Menu 3.4.5.3 Gateway Address Entry Menu Use the numeric keypad to enter the Gateway Address that you want to assign to the 4MX 100 Transmitter.

  • Page 72: Audio Setup

    Figure 74 – Audio Setup Menu 3.4.6.1 Set the active Audio Input The 4MX 100 audio input type can be set for either a PRIMARY or a BACKUP audio input source. This selection may be made on the right side of the Audio Menu by depressing either the SELECT PRIMARY or SELECT BACKUP buttons.
  • Page 73 STEP 3 STEP 1 STEP 2 Figure 75 – Set Peak Indicator Menu 3.4.6.6 Audio Levels Analog and AES/EBU Audio levels may be adjusted using the LOWER ANALOG, RAISE ANALOG, LOWER AES/EBU, and RAISE AES/EBU selections. ©2007 Broadcast Electronics Inc.

  • Page 74: Operating Modes (Analog Am Or Hd Am)

    Use MAG/PH DL RAISE and MAG/PH DL LOWER to adjust the magnitude and phase signal time relationship. Positive numbers indicate the magnitude signal is being delayed. Negative numbers indicate the phase signal is being delayed. Use MAG RAISE and MAG LOWER to adjust the amplitude of the magnitude signal. ©2007 Broadcast Electronics Inc.

  • Page 75: Spectrum

    The Network Sweep menu allows the user to view a system load impedance plot. The plot displays color coded points matching the values for Frequency, Resistance (R and X), and VSWR. This feature was not active at the time of printing this manual. Figure 78 – Network Sweep Menu ©2007 Broadcast Electronics Inc.

  • Page 76: Diagnostics

    Figure 79 – Main Diagnostics Menu 3.4.11 Event Log Built into the Diagnostics System of the 4MX 100 is an Event Log. The Event Log stores the operating history of the 4MX 100. Virtually, every event (a change in an operating parameter) that the transmitter sees is recorded.

  • Page 77: Pa Power Supply Diagnostics

    Ensure that all of the Power Supply Modules are ON (GREEN) with No Faults. NOTE: In a 4MX 100, all 64 Power Supply Modules will not be ON unless the RF Output Power Level is set for ≥ 20kW; @ 5kW – 19.99kW 32 Ps Modules will be ON (9-24 &...

  • Page 78: Pa Rf Module Diagnostics

    Figure 82 – PA RF Module Diagnostics Menu NOTE: In a 4MX 100, all 64 PA Modules will not be ON unless the RF Output Power Level is set for ≥ 20kW; @ 5kW – 19.99kW 32 PA Modules will be ON (9-24 &...

  • Page 79: I/O Status

    It is recommended to start with a lower power level ≤ 10kW, when turning the RF Output Power ON for the first time, and then step up the RF Output Power once the entire transmission system has been proven out. Figure 84 – Power Menu with Default Settings ©2007 Broadcast Electronics Inc.

  • Page 80: Program Preset Power Level Menus

    Fill in the desired setting and then select ENTER. Figure 85 – Program Power Menu 3.4.17 Raise / Lower Power Level Select the RAISE POWER and LOWER POWER buttons to change the RF Output power level momentarily from the selected preset setting. ©2007 Broadcast Electronics Inc.

  • Page 81: Remote Control I/O Connections

    001, supplied in the and Audio Input Access Installation Kit) 2 turns Panel as shown Step 5 – Remote Control I/O Board (see Figure 82 for pin outs) Figure 87 – Remote Control I/O and Audio Input Access Panel ©2007 Broadcast Electronics Inc.
  • Page 82 Figure 88 – Remote I/O Terminal Block Pin Outs ©2007 Broadcast Electronics Inc.
  • Page 83 Included in the remote device I/O connections, is an INTERLOCK and a FAILSAFE connection. These connections are provided for safety to protect not only the 4MX 100 transmitter but service personnel as well who may be working on the transmitter or the transmission system.

  • Page 84: Interlock (Tb2-4)

    2) The front panel FAULT indicator below the GUI will also turn RED. Once the FAILSAFE circuit is closed the transmitter RF Output will remain OFF, but may now be turned ON. IMPORTANT - The remote FAILSAFE circuit MUST be closed or the transmitter will not operate! ©2007 Broadcast Electronics Inc.

  • Page 85: Other Remote Device I/O Connections

    NOTE: If P4 on the controller pcb is positioned on pins 1 & 2 of J4, a GND connection is required to activate the remote input. If P4 is on pins 2 & 3 of J4, a voltage of 3.5-12V is required to activate the input. ©2007 Broadcast Electronics Inc.
  • Page 86 NOTE: If P4 on the controller pcb is positioned on pins 1 & 2 of J4, a GND connection is required to activate the remote input. If P4 is on pins 2 & 3 of J4, a voltage of 3.5-12V is required to activate the input. ©2007 Broadcast Electronics Inc.
  • Page 87 NOTE: If P4 on the controller pcb is positioned on pins 1 & 2 of J4, a GND connection is required to activate the remote input. If P4 is on pins 2 & 3 of J4, a voltage of 3.5-12V is required to activate the input. ©2007 Broadcast Electronics Inc.
  • Page 88 3.5.3.21 EX PWR (TB3-3) Exgine card input, option not available at this time. 3.5.3.22 EX RESET (TB3-4) Exgine card input, option not available at this time. 3.5.3.23 GND (TB3-5) This GND connection is the 4MX 100 transmitter chassis ground. ©2007 Broadcast Electronics Inc.
  • Page 89 The transmitter will go “OFF”, just as if the OFF button on the front panel was pushed. When the interlock status has been restored the transmitter will remain off until a remote power level has been selected or the ON button has been pushed on the front panel of the TX. ©2007 Broadcast Electronics Inc.
  • Page 90 Fault Status Output defined above. This fault status output is latched when the event occurs and will remain latched until it is cleared by using the fault reset button, turning the transmitter off and back on, or turning the ac power off and then back on. ©2007 Broadcast Electronics Inc.
  • Page 91 400V Nominal operation). This fault status output is latched when the event occurs and will remain latched until it is cleared by using the fault reset button, turning the transmitter off and back on, or turning the ac power off and then back on. ©2007 Broadcast Electronics Inc.
  • Page 92 3.5.3.52 LIGHTNING STATUS (TB6-4) This status output is active high and will indicate when a greater than 6.2kV potential is present on the 4MX 100 RF Output. 3.5.3.53 BLOWER 4 STATUS (TB6-5) This status output is active high and will indicate when Blower 4 in the transmitter is not drawing any current.
  • Page 93 3.5.3.61 DIG CAR STATUS (TB7-3) Exgine status output, this option is not available at this time. 3.5.3.62 DAY/NIGHT STATUS (TB7-4) Exgine status output, this option is not available at this time. ©2007 Broadcast Electronics Inc.
  • Page 94 This status output allows the monitoring of the exhausted air temperature from the 4MX. 3.5.3.72 REM INLET TEMP (TB8-4) This status output allows the monitoring of the ambient inlet air temperature to the 4MX. 3.5.3.73 +5V (TB8-5) +5V supply connection. ©2007 Broadcast Electronics Inc.

  • Page 95: Pa Modules

    The Power Supply Modules provide 400V to the PA’s. There is a one to one relationship between PA’s and the Power Supplies, 64 of each in the 4MX 100. The supply is a power factor correcting boost circuit that operates directly from the ac line. Fault circuitry is included for protection against over current conditions and to ensure smooth startup.

  • Page 96: Exciter

    IBOC generator to minimize conversion steps. System Controller The 4MX 100 controller is a processor-based board that provides transmitter control and protection. It communicates with all of the other functional assemblies in the cabinet to respond to user input, control transmitter function, monitor operation and report the status back to the user.

  • Page 97: High / Low Line Sensor

    18V Supply #4 #2 (K3) Contactor (K1) Main AC Breaker (CB1) Figure 93 – 4MX 100 AC Supply (Main and Auxiliary Cabinets) 18V Power Supplies 3.11 For redundancy, there are (4) 18V Power Supplies located in the AC Entry areas of the Auxiliary and Main cabinets as shown above.

  • Page 98: General Maintenance

    4 General Maintenance 4.1 Air Filter Replacement The 4MX 100 has (4) reusable inlet Air Filters located on the lower rear door of both the Main and Auxiliary cabinets. These filters provide protection to the 4MX 100 by removing dirt from the inlet cooling air.

  • Page 99: Gui Menu Screen Care

    This does require turning the Main AC Breaker OFF that is located on the rear of the Transmitter as well as turning the Primary AC Power Breaker Box OFF. AC Connections Figure 96 – AC Terminal Block Connections ©2007 Broadcast Electronics Inc.

  • Page 100: Repair / Replacement

    PA Modules are ON at a given time. In a 4MX 100, all 64 PA Modules will not be ON unless the RF Output Power Level is set for ≥ 20kW; @ 5kW – 19.99kW 32 PA Modules will be ON (9-24 & 41-56);...
  • Page 101 If the “Status” of the “Faulted” PA Module is not “OFF”, turn the PA Module “OFF” by selecting the appropriate “PA(X) OFF” button. Before a given PA Module may be removed, its “Status” must be “OFF.” ©2007 Broadcast Electronics Inc.
  • Page 102 PA Modules 17 - 32 49 - 64 Figure 100 – 4MX 100 PA Module Locations (Front of Transmitter) Step 5 – After locating the “Faulted” PA Module, ensure that the “GREEN” led is extinguished. PA Module ON / OFF...
  • Page 103 Figure 102 – Disconnect Ethernet Cable Step 7 – Loosen thumb screws and pull to slide the module out. Loosen Thumbscrews and slide the PA Module Figure 103 – Loosen Thumbscrews and Slide the PA Module Out ©2007 Broadcast Electronics Inc.
  • Page 104 Figure 104 – Install New PA Module and Tighten Thumbscrews Step 9 – Connect the Ethernet Cable to the PA Module. Connect Ethernet Cable to PA Module Figure 105 – Connect the Ethernet Cable To PA Module ©2007 Broadcast Electronics Inc.
  • Page 105 Step 11 – Ensure that the GREEN led on the front of the PA Module comes back on. Ensure that the GREEN Led located on the front of the PA Module comes back on Figure 107 – PA Module LED ©2007 Broadcast Electronics Inc.
  • Page 106 Fault Reset button located below GUI to clear any faults. Figure 108 – Turning the PA Module ON The transmitter should now return to the power level that it was operating at before the PA Fault occurred. ©2007 Broadcast Electronics Inc.

  • Page 107: Prepare To Replace The 4Mx 100 Pa Motherboard

    7.1 Turn the 4MX 100 AC Breaker OFF Step 1 - Turn the AC Breaker to the OFF position. Step 2 - Turn the Main Service Entrance AC Breaker to the OFF position. Figure 109 – Turn 4MX 100 AC Breaker to OFF ©2007 Broadcast Electronics Inc.

  • Page 108: 4Mx 100 Pa Module Locations

    7.2 4MX 100 PA Module Locations The 4MX 100 has 64 PA Modules (2 per PA Motherboard). Figure 110 illustrates how the PA Modules are numbered. Figure 111 illustrates how the PA Motherboards are numbered. PA Motherboards will be referred to in this section as either Top or Bottom.

  • Page 109: 4Mx 100 Pa Motherboard Locations

    7.3 4MX 100 PA Motherboard Locations The 4MX 100 has 64 PA Modules (2 per PA Motherboard). Figure 110 illustrates how the PA Modules are numbered. Figure 111 illustrates how the PA Motherboards are numbered. PA Motherboards will be referred to in this section as either Top or Bottom.

  • Page 110: Pa Module Removal

    7.4 PA Module Removal In the following instructions we will be replacing Motherboard No. 10 in a 4MX 100. PA Modules 19, 20, and 27 must be removed first. Disconnect and remove PA Modules 19, 20, and 27. (Module 27 not yet removed in photo) Figure 112 –...

  • Page 111: Remove Wiring Connection Hardware

    STEP 1 – Remove all wiring from studs (10 places) STEP 2 – Using a No. 2 Phillips Screw Driver, remove (2) mounting screws and (2) lock washers Figure 115 – Remove Wiring From Studs / Remove Mounting Screws ©2007 Broadcast Electronics Inc.

  • Page 112: Loosen Pa Motherboard Bracket Thumbscrews

    7.9 Remove the PA Motherboard from the Transmitter STEP 1 - Lift the PA Motherboard straight up until it becomes free at the top. (The Motherboard bracket has hook latches at the top) Figure 117 – Lift the Motherboard Straight Up ©2007 Broadcast Electronics Inc.
  • Page 113 “gently” flex these coils to clear the mounting screw bosses located on each side of the compartment. Figure 119 – Gently Flex Coils (both sides) to Clear Mounting Screw Bosses ©2007 Broadcast Electronics Inc.

  • Page 114: Ty-Rap Center Wire Bundle

    Figure 120 – PA Motherboard Removed 7.10 Ty-rap Center Wire Bundle Before installing the new PA Motherboard, ty-rap the center wire bundle as shown to ease installation. Figure 121 – Ty-rap Wire Bundle ©2007 Broadcast Electronics Inc.

  • Page 115: Install New Pa Motherboard

    Figure 122 – Gently Flex Coils (both sides) to Clear Mounting Screw Bosses STEP 2 – Once the coils clear the screw bosses, tilt the Motherboard to vertical position. STEP 3 – Pull the wires through the board. Figure 123 – Tilt Motherboard into Vertical Position ©2007 Broadcast Electronics Inc.
  • Page 116 If the board can be pushed back, the hook latches are not engaged. STEP 6 – Using a No. 2 Phillips Screw Driver, install (2) mounting screws and (2) lock washers Figure 125 – Install Mounting Screws ©2007 Broadcast Electronics Inc.

  • Page 117: Tighten Pa Motherboard Bracket Thumbscrews

    7.12 Tighten PA Motherboard Bracket Thumbscrews Tighten PA Motherboard thumbscrews. Top thumbscrew Bottom thumbscrew Figure 126 – Tighten PA Motherboard Bracket Thumbscrews ©2007 Broadcast Electronics Inc.

  • Page 118: Top" Pa Motherboard Wiring Connections

    (HIGHER Numbered single BLK Wire) (E28 on PCB) (E27 on PCB) (E29 on PCB) (E30 on PCB) NOTE: Ensure that the RF- and RF+ Wires DO NOT cross! Figure 127 – “TOP” PA Motherboard Wiring Connections ©2007 Broadcast Electronics Inc.

  • Page 119: Bottom" Pa Motherboard Wiring Connections

    (This connection may have 1, 2, or 3 (This connection may have 1, 2, or GRN / YEL wires going into the lug) 3 RED wires going into the lug) Figure 128 – “BOTTOM” PA Motherboard Wiring Connections ©2007 Broadcast Electronics Inc.

  • Page 120: Install Pa Motherboard Cover

    (4) screws and (4) lock washers Figure 129 – Install Motherboard Cover 7.16 Install and Connect PA Modules Install and connect all PA Modules that were previously removed. Figure 130 – Install PA Modules ©2007 Broadcast Electronics Inc.

  • Page 121: Turn The 4Mx 100 Ac Breaker On

    Step 2 - Turn the AC Breaker to the ON position. Figure 131 – Turn 4MX 100 AC Breaker to ON Once the transmitter comes up, there should not be any faults or alarms relating to Power Amplifiers. ©2007 Broadcast Electronics Inc.

  • Page 122: Pa Power Supply Module Replacement

    PS Modules are ON at a given time. In a 4MX 100, all 64 Power Supply Modules will not be ON unless the RF Output Power Level is set for ≥ 20kW; @ 5kW – 19.99kW 32 PS Modules will be ON (9-24 & 41-56);...
  • Page 123 NOTE: Under certain conditions, a Power Supply Module fault may be indicated even though a PA Module has actually faulted. Please keep this in mind when troubleshooting. As a general rule, replace the corresponding PA module first. ©2007 Broadcast Electronics Inc.
  • Page 124 Step 4 – Locate the failed power supply module. Figure 136 shows the Power Supply Module locations. Modules Modules 1-32 33-64 Terminal Blocks for Primary AC Connections Figure 136 – Power Supply Module Locations (Rear of Transmitter) ©2007 Broadcast Electronics Inc.
  • Page 125 , or 4 row, use a 3/8” Nut Driver and remove the kepnut that secures that row’s retaining bracket in place. Figure 137 – Power Supply Module Retaining Brackets (Rear of Transmitter – Lower Door Removed) ©2007 Broadcast Electronics Inc.
  • Page 126 Step 6 – After removing the retaining bracket, pull to remove the Power Supply Module. As the module starts to come out, be sure to use free hand to support the rear of the module. Figure 138 – Power Supply Module Removal ©2007 Broadcast Electronics Inc.
  • Page 127 Rear Card Guides and then becomes fully seated into the power supply motherboard card edge connector. Front Card Rear Guides Card Guides Power Supply Motherboard Card Edge Connector Figure 139 – View of Power Supply Motherboard (PS Module Removed) ©2007 Broadcast Electronics Inc.
  • Page 128 Figure 140 – Installing a New Power Supply Module Step 8 – Install the Power Supply retaining bracket. Re-install the Power Supply Retaining Bracket and hardware Figure 141 – Install Power Supply Retaining Bracket ©2007 Broadcast Electronics Inc.
  • Page 129 Cabinet Rear Door WILL NOT be able to be re-installed until the Key is inserted into the Bolt Lock and the Bolt is retracted! Figure 142 – Install Lower Rear Door and Turn AC Breaker ON ©2007 Broadcast Electronics Inc.
  • Page 130 Step 10 – After turning on the Main AC Breaker, reset Faults from the Power Supply Diagnostics Menu. The transmitter should now return to the RF Output Power level that it was set at before the Power Supply Fault occurred. Figure 143 – Reset Faults ©2007 Broadcast Electronics Inc.

  • Page 131: Prepare To Replace A 4Mx 100 Power Supply Motherboard

    8 Prepare to Replace a 4MX 100 Power Supply Motherboard 8.1 Tools / Items Needed No. 2 Phillips Screw Driver Flat Blade Screw Driver (short shank) Identification Tags (tag Power Supply Modules prior to removal) 11/32” Nut Driver 1/4” Nut Driver Small 6”...

  • Page 132: Power Supply Module / Motherboard Locations

    9.2 Power Supply Module / Motherboard Locations The 4MX 100 has 64 Power Supply Modules. Figure 145 illustrates how the Power Supply Modules are numbered. 4MX 100 PS Modules 1 – 64 (8 Power Supply Modules plug into each Motherboard) Figure 145 –...

  • Page 133: Removal Of Power Supply Modules

    PS Modules. Step 5 – Pull to slide the Retaining Bracket out as indicated by the arrows above, then remove the next row of PS Modules. Step 6 – Remove all of the Power Supply Modules. ©2007 Broadcast Electronics Inc.
  • Page 134 Auxiliary Cabinet shown Figure 148 – Removal of Power Supply Modules Power Supply Motherboards Auxiliary Cabinet shown Figure 149 – Power Supply Modules Removed ©2007 Broadcast Electronics Inc.

  • Page 135: Disconnect Power Supply Motherboard Connections

    Step 1 - Using an 11/32” nut driver remove brass hex nuts (qty 24) and lock washers (qty 24). Next, remove the wire harness lug terminals from the studs in the Motherboard. Step 2 – Disconnect the Ethernet connection. Figure 150 – Disconnect Power Supply Motherboard Connections ©2007 Broadcast Electronics Inc.

  • Page 136: Remove Power Supply Motherboard Hardware

    Step 2 - Using a No. 2 Phillips screw driver, remove all card edge mounting Screws and split lock washers (qty 16). Figure 151 – Removal of Power Supply Motherboard Hardware Step 3 – Remove the Power Supply Motherboard from the transmitter. ©2007 Broadcast Electronics Inc.

  • Page 137: Install New Power Supply Motherboard

    Use an 11/32” nut driver and install the Brass Nuts and Lock Washers that were previously removed when disconnecting the harness. Ensure that all connections are tightened down properly. Step 2 – Connect the Ethernet connection. Figure 152 – Power Supply Motherboard Hardware Cable Connections ©2007 Broadcast Electronics Inc.

  • Page 138: Install The Power Supply Modules

    Step 2 – Install the Retaining Bracket. Use a 3/8” Nut Driver to tighten the kepnuts that secure the retaining brackets in place. Step 3 – Repeat Steps 1 and 2 for the remaining rows of Power Supply Modules. ©2007 Broadcast Electronics Inc.
  • Page 139 Rear Card Guides and then becomes fully seated into the power supply motherboard connector. Front Card Rear Guides Card Guides Power Supply Motherboard Card Edge Connector Figure 154 – View of Power Supply Motherboard (Power Supply Module Removed) ©2007 Broadcast Electronics Inc.

  • Page 140: Install The Lower Rear Doors Of The Transmitter And Turn Ac Breaker On

    Lock and the Bolt is retracted! Figure 155 – Install Lower Rear Door and Turn AC Breaker ON After AC Power has been applied, ensure that the transmitter comes up without any faults pertaining to the Power Supply. ©2007 Broadcast Electronics Inc.

  • Page 141: Prepare To Replace The 4Mx 100 System Controller

    ESD sensitive components. 11 Replacing the 4MX 100 System Controller 11.1 Turn the 4MX 100 AC Breaker OFF Turn the AC Breaker to the OFF position Figure 156 – Turn 4MX 100 AC Breaker to OFF ©2007 Broadcast Electronics Inc.

  • Page 142: Remove The Remote I/O Access Panel

    (2) screws from the shown right door as shown. Step 3 – Use the fold- out handle to remove the Remote Control I/O and Audio Input Access Panel Figure 157 – Remote Control I/O Access Panel Removal ©2007 Broadcast Electronics Inc.

  • Page 143: Remove The Remote I/O Pcb Assembly

    Figure 158 – Remove Remote I/O PCB 11.4 Loosen the Controller Bracket Kepnuts (in the Remote I/O Cavity) Using a 1/4” Nut Driver loosen the (4) kepnuts (do not remove – just loosen) Figure 159 – Loosen System Controller PCB Bracket Kepnuts ©2007 Broadcast Electronics Inc.

  • Page 144: Disconnect Cabling From The Controller Pcb

    Figure 160 – Disconnect Cabling 11.6 Remove the Controller PCB Mounting Hardware Step 1 - Using a 1/4” Nut Driver remove the (3) kepnuts as shown. Figure 161 – Remove Kepnuts ©2007 Broadcast Electronics Inc.

  • Page 145: Remove The System Controller Pcb Assembly From The 4Mx 100

    Step 2 - Using a No. 2 Phillips screw driver, remove the (9) mounting screws Figure 162 – Remove Mounting Screws 11.7 Remove the System Controller PCB Assembly from the 4MX 100 Hold the Controller PCB Assembly as shown and remove from the transmitter Figure 163 –...

  • Page 146: Send The Old Controller Pcb Assembly To Broadcast Electronics, Inc

    Phone: (217) 224-9617 E-mail: rfservice@bdcast.com Fax: (217) 224-9607 11.9 Install the new Controller PCB Assembly into the 4MX 100 Hold the Controller PCB Assembly as shown and install into the transmitter Figure 164 – Install the Controller PCB from the 4MX 100...

  • Page 147: Tighten The Controller Bracket Kepnuts (In The Remote I/O Cavity)

    Figure 165 – Tighten System Controller PCB Bracket Kepnuts 11.11 Install Controller PCB Mounting Hardware Step 1 - Using a 1/4” Nut Driver install the (3) kepnuts that were previously removed. Figure 166 – Install Kepnuts ©2007 Broadcast Electronics Inc.
  • Page 148 Step 2 - Using a No. 2 Phillips screw driver, install the (9) mounting screws that were previously removed Figure 167 – Install Mounting Screws ©2007 Broadcast Electronics Inc.

  • Page 149: Connect Cabling To The Controller Pcb Assembly

    CAUTION - Ensure that these (2) connectors are connected exactly as shown! If these (2) connectors are installed incorrectly, the Controller PCB may be permanently damaged along with other components of the transmitter! Figure 168 – Connect Cabling ©2007 Broadcast Electronics Inc.
  • Page 150 Step 2 – Using a No. 2 Phillips Screw Driver remove the (3) screws from the Step 1 – Install the hinge area as Remote I/O Access shown Panel Figure 170 – Install the Remote I/O Access Panel ©2007 Broadcast Electronics Inc.
  • Page 151 Figure 171 – Install the Front Door Hardware 11.16 Turn the 4MX 100 AC Breaker ON Turn the AC Breaker to the ON position Figure 172 – Turn the 4MX 100 AC Breaker to ON ©2007 Broadcast Electronics Inc.
  • Page 152 Power Level Settings, and Peak Indicator Levels. Since the Controller PCB Assembly is being replaced, this information will need to be reprogrammed into the transmitter. Please see your 4MX 100 AM Transmitter Manual for programming these settings. For programming the Login and Password, RF Power Level Settings, Peak Indicator Levels, see the appropriate sections of this manual 11.18 Turn the RF Output Power ON...
  • Page 153 12.2 Items/Tools required for the Software Upgrade Process Personal Computer with CD ROM Drive running either Windows 2000 or XP Operating System 4MX Software Upgrade CD from B.E. (4MX 25, 4MX 50, or 4MX 100) Crossover Ethernet Cable (if connecting directly to the transmitter) Straight-Thru Ethernet Cable (if connecting through an Ethernet switch) 12.3 4MX Software Version Labeling...
  • Page 154 If Field #5 incremented, you will need to update PS Module Software from the 4MX GUI Software Update Menu. PS Module code is initially downloaded to the transmitter as part of the “Controller Control Micro.” If Field #6 incremented, you will need to upload to the “IP Module” target. ©2007 Broadcast Electronics Inc.
  • Page 155 Step 3 – To establish communication via I.P. with the 4MX Transmitter, your PC must be setup in the same I.P. family. On your PC go to Start -> All Programs -> Accessories -> Communications -> and select Network Connections. Figure 177 – PC Network Connection Menu ©2007 Broadcast Electronics Inc.
  • Page 156 Mask of 255.255.255.255, we configure the PC with an I.P. of 10.2.4.10 and 255.255.255.0 for the Subnet Mask. Change the I.P. address and Subnet then select Figure 179 – Configure the I.P. Address of the Personal Computer ©2007 Broadcast Electronics Inc.
  • Page 157 (2) screws from the shown right door as shown. Step 6c – Use the fold- Ethernet Port out handle to remove the Remote Control I/O and Audio Input Access Panel Figure 180 – Remote Control I/O Access Panel Removal ©2007 Broadcast Electronics Inc.
  • Page 158 MUST then be cycled for the upgrades to take effect. Customers should plan for the transmitter to be off of the air for approximately 30 minutes for the entire process. - OR - Figure 182 – Turn the RF Output Power OFF ©2007 Broadcast Electronics Inc.
  • Page 159 2) Controller PCB – Control Micro (includes PA & PS Modules update code) 3) IP Module 4) Exciter Figure 184 – Software Update Application NOTE: Should the I.P. connection be lost during the Software Upgrade Process, see section 12.8 for instructions on how to proceed. ©2007 Broadcast Electronics Inc.
  • Page 160 Step 15 – If the 4MX Software Upgrade included new versions of PA Module Micro and/or PS Module Micro Software proceed to Step 16 (determined by comparing the current version number to the upgrade version number – see Sections 12.3 and 12.4), if not, proceed to Step 15a. ©2007 Broadcast Electronics Inc.
  • Page 161 Engineer” login (factory default is 1 2 3 4 5 6) has permission to the Software Update Menu. Select UPDATE PA to update software in all of the 4MX PA Modules. Select UPDATE PS to update software in all of the 4MX PS Modules. ©2007 Broadcast Electronics Inc.
  • Page 162 Transmitter’s AC Power OFF, and then back ON for the software updates to take affect. Turn the AC Breaker OFF and then back ON Figure 190 – Turn the 4MX AC Breaker OFF then back ON Step 19 – Turn the transmitter’s RF Output to ON. ©2007 Broadcast Electronics Inc.
  • Page 163 2) Turn the transmitter’s AC Power OFF then back ON. 3) Close the software download tool on the PC. 4) Proceed with PA and PS Updates (if required). Figure 192 – Downloading Code to “Target” Screen ©2007 Broadcast Electronics Inc.
  • Page 164 Diagrams and Schematics 13.1 4MX 100 System Block Diagram 400VAC (597-4100-001) 13.2 PCB, ASSY, DSP Exciter (917-0400) 13.3 PCB, ASSY, PA Motherboard / Combiner (917-0403) 13.4 PCB, ASSY, High Power AM PA (917-0404) 13.5 PCB, ASSY, Soft-key Switch (917-0406) 13.6 PCB, ASSY, Controller (917-0407) 13.7 PCB, ASSY, Switch / LED (917-0409)
  • Page 165 71 8 Coax Exciter Board Exgine Board RF2B I sample 400VAC (332-460VAC) 4 Wire WYE, Audio Inputs AES Out See AC Input Wire Size Chart in the 4MX 100 Manual Mono LVDS Sample 10MHz 44.1kHz 10MHz HEW LETT PACKA RD...
  • Page 166 Ø2 Breaker (400VAC WYE Input) Ø3 400VAC (332-460VAC) 4 Wire WYE, See AC Input Wire Size Chart in the 4MX 100 Manual 4MX 100 AM Transmitter System Block Diagram (400VAC WYE Input) 6 Twisted Pair CAT5 6 Twisted Pair CAT5...

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