Nautel NX400 Installation Manual
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Nautel NX400 Installation Manual

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NX400 Transmitter
Installation Manual
Document: NHB-NX400-INS
Issue:
1.0 2017-06-30
Status:
Standard

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Summary of Contents for Nautel NX400

  • Page 1 NX400 Transmitter Installation Manual Document: NHB-NX400-INS Issue: 1.0 2017-06-30 Status: Standard...
  • Page 3 The comparisons and other information provided in this document have been prepared in good faith based on publicly available information. The reader is encouraged to consult the respective manufacturer's most recent published data for verification. © Copyright 2017 NAUTEL. All rights reserved.

  • Page 5: Table Of Contents

    NX400 Installation Manual Table of contents Contents Release control record Preparing for installation Unpacking and positioning Completing cabinet assembly Connecting transformer taps and secondary wiring Connecting the station reference ground Connecting ac power Adjusting the spark gap Installing audio inputs...
  • Page 6 Going on-air 10-7 Network Setup 10-8 Parts and tools 11-1 Contacting Nautel 11-1 Parts supplied by Nautel 11-1 Parts not supplied by Nautel 11-2 Parts ordering 11-2 Module replacement program 11-2 Tools for installation 11-3 Pre-installation / Installation assistance 12-1...

  • Page 7: Release Control Record

    NX400 Installation Manual Release control record Issue Date Reason 2017-06-30 Initial release of NX400 (NARA67). Supports software version NX SW 4.7 and higher. Issue 1.0 2017-06-30 Page ix...
  • Page 8 NX400 Installation Manual Page x Issue 1.0 2017-06-30...

  • Page 9: Preparing For Installation

    (see Figure 1.1). Figure 1.1: Tip and Drop Indicators 4. Report any damage immediately to your Nautel sales representative and the carrier. 5. Move the crates as close as possible to the transmitter’s planned location. Issue 1.0 2017-06-30 Page 1-1...
  • Page 10 8. Gather the parts and tools you will need for installation. For a list of required tools, see “Parts and tools” on page 11-1. 9. When you are ready to install the NX400 transmitter, follow the steps shown in Figure 1.2 on page 1-3.
  • Page 11 NX400 Installation Manual Preparing for installation Figure 1.2: Flowchart - Installing the transmitter Unpacking and positioning - see page 2-1 Completing cabinet assembly - see page 3-1 Connecting transformer taps/load wiring - see page 4-1 Connecting the station reference ground - see page 5-1...
  • Page 12 NX400 Installation Manual Preparing for installation Page 1-4 Issue 1.0 2017-06-30...

  • Page 13: Unpacking And Positioning

    1. Lift and/or slide the transmitter cabinets off the base of their crates using mechanical assistance (i.e., a forklift) and/or sufficient manpower. The NX400 is shipped in five main crates - four transmitter cabinets and a transformer cabinet. Crated and uncrated weights are...
  • Page 14 3. During assembly, remove any packing materials, loose wires or connectors that are sandwiched between cabinet mating surfaces. Figure 2.1: NX400 Cabinet Layout Cable Tray System (shown with overhead supports)
  • Page 15 • Obtain the cover plates (Nautel Part # 207-8211) packed with the NX400 ancillaries. • Remove the 12 M4 screws that secure the filter brackets to the rear door of each cabinet and remove the air filter and brackets (see Figure 2.2 on page...
  • Page 16 2-8). Remove the packing material that has been used to protect it from vibration damage during shipping. Close the rear doors. 12. Obtain four stiffener brackets [Nautel Part # 207-8296 (qty 1), 207-8296-01 (qty 1) and 207-8296-02 (qty 2)] for each transmitter cabinet from the ancillary kit. Install them on the top of each cabinet as shown in Figure 2.6 on page...
  • Page 17 NX400 Installation Manual Unpacking and positioning Figure 2.2: Installing Rear Plate and Removing Top Cover Plate - Closed Air Cooling Partial Rear View Remove the 12 M4 screws that secure the filter bracket. Use same holes and hardware to install cover plate.
  • Page 18 NX400 Installation Manual Unpacking and positioning Figure 2.3: Opening the Output Cabinet Filter Door Remove the 23 M5 screws that secure the hinged filter panel. Cabinet 3 Shown Front Door Removed for Clarity Page 2-6 Issue 1.0 2017-06-30...
  • Page 19 (Nautel Part # 213-8320-07) *remove side cover to access connections to transmitter and RF output connector M10 ACORN NUT (Nautel Part # HMN22) M10 HEX NUT (Nautel Part # HMN07) M10 SPLIT WASHER (Nautel Part # HMW15) M10 FLAT WASHER (Nautel Part # HMW07)
  • Page 20 NX400 Installation Manual Unpacking and positioning Figure 2.5: Location of Arc Detector Assembly Arc Detector Assembly (A64 in racks 1 through 4) Partial Rear View; Rear Door Removed for Clarity Page 2-8 Issue 1.0 2017-06-30...
  • Page 21 NX400 Installation Manual Unpacking and positioning Figure 2.6: Installing Stiffener Brackets Install stiffener brackets to create a frame as shown. Remove and re-use the hardware securing the exhaust duct grill to secure the brackets. Single-cabinet transmitter shown. For multi-cabinet transmitters, repeat installation for each cabinet.
  • Page 22 NX400 Installation Manual Unpacking and positioning Page 2-10 Issue 1.0 2017-06-30...

  • Page 23: Completing Cabinet Assembly

    Completing cabinet assembly Section 3: Completing cabinet assembly To complete the assembly of the NX400 transmitter’s cabinets, perform the following tasks: Note: The assembly instructions in this section help to achieve basic cabinet assembly, and are mostly limited to exterior mechanical connections. All assembly items and hardware that is not already in the transmitter is located in the transmitter’s ancillary crate.
  • Page 24 Figure 3.5 on page 3-11. Obtain six “Long Vertical Channel Joiners” (Nautel Part # 207-8270), three “Horizontal Channel Joiner” (Nautel Part # 207-8270-01) and six “Short Vertical Channel Joiners” (Nautel Part # 207-8270-02), which are bubble-wrapped and secured inside the filter compartment of cabinets 1 and 2.
  • Page 25 NX400 Installation Manual Completing cabinet assembly Figure 3.2: Cabinet Joiner Channel Detail VERTICAL CHANNEL JOINERS HORIZONTAL CHANNEL JOINER UPPER TEFLON SUPPORT PLATE SHORT VERTICAL CHANNEL JOINERS LOWER TEFLON SUPPORT PLATE Issue 1.0 2017-06-30 Page 3-3...
  • Page 26 Figure 3.5 on page 3-11) from the ancillary crate, including eight (8) combiner tubes and two (2) spacers. 18. Remove the two cover plates (Nautel Part # 207-8162) from the sides of the outside cabinets (four plates total; see Figure 3.5 on page 3-11).
  • Page 27 Obtain a Nautel Part # 207-8251-12 “Copper Tube”. Align its L-shaped brass end with the copper tube inserted in the previous step and use the “Combiner Tube Jig” (Nautel Part # 207-9566, in the ancillary kit) to hold the copper tubes in place while securing them together using two M8, 25-mm long button-head screws, with flat and split washers.
  • Page 28 (150 mm) of the opposite end of the control cabinet. • Obtain a Nautel Part # 207-8248-28 “Spacer”. Insert the spacer between the end of the copper tube assembly and the copper angle mounted in the control cabinet. Insert the copper tube assembly the remaining distance.
  • Page 29 NX400 Installation Manual Completing cabinet assembly 28. Locate and install the directional coupler (A3A67, Nautel Part # NAFP107A) on top of the output cabinet (cabinet 3) using the existing hardware (see Figure 3.4 on page 3-10). Locate the directional coupler’s mating connectors - 9-pin D-sub RK1-P27 (tied back in control cabinet (cabinet 1) and Rogowski current probe BNC ROGOWSKI-P1 (tyrapped inside output cabinet (cabinet 3) and remove shipping tyraps.
  • Page 30 NX400 Installation Manual Completing cabinet assembly 34. See Figure 3.3 on page 3-9. Locate BNC connector P35 that is tyrapped in the back of inner cabinet (cabinet 2), near a side clearance hole adjacent control cabinet (cabinet 1). Cut securing tyraps and neatly route RK2-P35 into control cabinet (cabinet 1). Locate BNC connector P24 that is tyrapped in control cabinet (cabinet 1).
  • Page 31 NX400 Installation Manual Figure 3.3: Routing Interconnect Cables RK3-A67A1J3 SOME RF POWER MODULES AND FANS ARE NOT SHOWN FOR CLARITY (ETHERNET) (ETHERNET) Issue 1.0 2017-06-30 Page 3-9...
  • Page 32 NX400 Installation Manual Figure 3.4: NX400 Transmitter Cabinet Assembly Aid (Sheet 1 of 4) TOP OF OUTPUT CABINET (CABINET 3) SIDE PANEL (USE M5 HARDWARE) DIRECTIONAL COUPLER (HARDWARE FASTENED TO CABINET. 2 PER SIDE, REAR NOT SHOWN) REAR OF OUTPUT CABINET...
  • Page 33 NX400 Installation Manual Figure 3.5: NX400 Transmitter Cabinet Assembly Aid (Sheet 2 of 4) REAR VIEW CABINET JOINERS 207-8270, USE M6 HARDWARE CABINET JOINER 207-8270-01, USE M6 HARDWARE COVER PLATES 207-8162 CONTROL CABINET (CABINET 1) INNER CABINET (CABINET 2) OUTPUT CABINET...
  • Page 34 NX400 Installation Manual Figure 3.6: NX400 Transmitter Cabinet Assembly Aid (Sheet 3 of 4) INDUCTOR INDUCTOR RK1-L7 COPPER STRAP CONNECTION POINT RK1-L7 RK2-L7 Aluminum plate Copper Straps 194-6298-02 CONNECTOR PIPE ASSEMBLY (6 SETS OF HARDWARE IN CABINET 2 AND CABINET 3 -...
  • Page 35 NX400 Installation Manual Figure 3.7: NX400 Transmitter Cabinet Assembly Aid (Sheet 4 of 4) CABINET 4 SIDE CABINET ALTERNATIVE VIEW NX400 OUTPUT PLATE CAPACITORS (TO ANTENNA GROUND SWITCH ROD DIRECTIONAL COUPLER) CERAMIC PILLAR CERAMIC PILLAR PACKING PLATES INDICATES A SECURING...

  • Page 36: Connecting Transformer Taps And Secondary Wiring

    It is important to choose the correct tap based on the loaded line-to-line voltage (i.e., the line voltage present when the NX400 is operating at full power and full modulation) for maximum peak modulation capability and maximum efficiency. If the loaded line-to-line voltage falls between two tap settings, choose the higher voltage tap (this will maximize the NX400‘s power factor).
  • Page 37 NX400 Installation Manual Connecting transformer taps and secondary wiring Figure 4.1: NX400 power transformer line voltage tap layout X0 located behind X1 connection Figure 4.2: NX400 power transformer double loop tap design PHASE CONNECTION (FOUR COPPER STRAPS) Page 4-2 Issue 1.0 2017-06-30...
  • Page 38 This wiring may have been purchased from Nautel and packed in an ancillary crate. If it is not purchased from Nautel, it must be obtained by the user. In this case, it is imperative that you purchase the wiring specified in Section 5 - Electrical Requirements of the NX400 Pre- installation Manual.
  • Page 39 Terminate the wire using the appropriate size Cytolok cable connectors (Nautel Part # JA92 for 1/0 AWG wire), which are provided in the ancillary kit (see Figure 4.5 on page 4-7...
  • Page 40 NX400 Installation Manual Connecting transformer taps and secondary wiring Figure 4.3: NX400 secondary wiring connections (power transformer cabinet) CABLE TRAY/ WIRING INTERFACE (AND BRACKETS) (WT02) TRANSFORMER STATION REFERENCE Remove only the screws SECONDARY PRIMARY GND CONNECTION CABLE TRAY CABLE TRAY...
  • Page 41 NX400 Installation Manual Connecting transformer taps and secondary wiring Figure 4.4: NX400 secondary wiring connections (transmitter cabinets) TOP VIEW AC CABLE ENTRY (CABINET 3 SHOWN) (DOWN THROUGH CABLE DUCT) XMTR REF GND 1/0 AWG (CABINET 3 ONLY) CABLE TRAY BRACKETS...

  • Page 42: Installation Instructions

    Connecting transformer taps and secondary wiring Figure 4.5: Installing Cytolok Cable Connectors TWO SIZES USED: Nautel Part # JA92 for 1/0 AWG wire Nautel Part # JA93 for 535 MCM wire (NOTE: JA93 can be used for 500-600 MCM) WIRE Cytoloks connectors can be found in the ancillary kit.
  • Page 43 NX400 Installation Manual Connecting transformer taps and secondary wiring Page 4-8 Issue 1.0 2017-06-30...
  • Page 44 Note: Proper grounding configuration is critical for protecting transmitter circuitry from lightning strikes. See the Electrical Requirements section of the NX400 Pre- Installation Manual or the Recommendations for Transmitter Site Preparation Manual for information on proper grounding and lightning protection recommendation.

  • Page 45: Connecting The Station Reference Ground

    NX400 Installation Manual Connecting the station reference ground Figure 5.1: Safety Ground Stud Assembly Detail INTERIOR EXTERIOR 1) M10 BRASS STUD 2) M10 NUT 3) M10 FLAT WASHER 4) M10 SPLIT WASHER 5) EXTERIOR REFERENCE GROUND CONDUCTOR 6) CABINET FRAME...

  • Page 46: Connecting Ac Power

    1. Switch off and lock out the main ac power at the service entrance. 2. Select the appropriate wire size for your main ac power cables. See the NX400 Pre- Installation Manual for assistance. Ensure the ground wire is insulated, so it does not contact the transmitter cabinet at any location other than the safety ground connection.
  • Page 47 Figure 6.1 on page 6-3). 8. Unless a primary wiring kit has been provided by Nautel, cabinet punches or hole saws will be required to cut the entry holes for the conduits. Punch the appropriate size hole in the top of the transformer's primary wiring entry plate (see Figure 6.1 on page...
  • Page 48 NX400 Installation Manual Connecting ac power Figure 6.1: Transformer Cabinet Primary Side CABLE TRAY WIRING INTERFACE (Figure shown with optional primary wiring kit. Standard entry plate requires holes to be punched for entrance of ac wiring). CABLE TRAY BRACKET CLEARANCE HOLE FOR...
  • Page 49 NX400 Installation Manual Connecting ac power Page 6-4 Issue 1.0 2017-06-30...

  • Page 50: Adjusting The Spark Gap

    Section 7: Adjusting the spark gap The NX400’s RF output filter contains a spark gap that must be adjusted - based on site altitude - to provide protection against excessive voltage (i.e., lightning) on the RF output. : Nautel presets the spark gap for 0.417 inches, which corresponds to a site altitude of 0 m (i.e, NOTE sea level).
  • Page 51 NX400 Installation Manual Adjusting the spark gap Figure 7.1: RF Output Spark Gap Location This side is stationary Spark Gap Locking Nut Page 7-2 Issue 1.0 2017-06-30...
  • Page 52 NX400 Installation Manual Adjusting the spark gap Table 7.1: Altitude Scale Factor Spark Gap Scale Factor Altitude (ft) (multiply gap by...) 1.00 1,000 1.05 2,000 1.11 3,000 1.17 4,000 1.23 5,000 1.30 6,000 1.37 7,000 1.45 8,000 1.54 9,000 1.63 10,000 1.74...
  • Page 53 NX400 Installation Manual Adjusting the spark gap Page 7-4 Issue 1.0 2017-06-30...

  • Page 54: Installing Audio Inputs

    Routing cables and connecting audio inputs 1. Route all audio cables from their audio sources to the top of the NX400’s control cabinet (cabinet 1). Two possible entry holes are provided to accept audio input wiring (see Figure 8.2 on page...
  • Page 55 8. Connect the appropriate audio input cable(s) to the connector(s) shown in Figure 8.3 on page 8-4. Secure cables to the existing cabling and to the panel using arrowhead tyraps (Nautel Part # HAC15) in the ancillary kit (see Figure 8.3 on page 8-4 to locate tyrap anchor hole locations).
  • Page 56 NX400 Installation Manual Installing audio inputs Figure 8.2: Audio Cable Entry AUDIO CABLE ENTRY Cable Entry Note: Wiring access hole has a removable plate with a pre-cut 1/4-inch dia hole. Use a chassis punch tool (e.g., Greenlee) to create the desired hole size (up to 2 inches) on the plate. Remove the plate to access a smaller, rectangular hole.
  • Page 57 NX400 Installation Manual Installing audio inputs Figure 8.3: Audio Connections (Exciter Panel shown) For either top entry hole, route wiring to the hinged (left) side of the exciter panel AES2 AES1 BALANCED 10 MHz (J10) (J11) ANALOG SYNC AUDIO (J12)

  • Page 58: Installing Control/Monitor Wiring

    – Re-install the entry plate on top of the transmitter using two M4 screws. 3. Obtain two ferrite toroids (one each of Nautel Part # LXP44 and LXP38) from the ancillary kit. 4. Pass all remote control/monitor cables through the ferrite toroids obtained in Step 3.
  • Page 59 GPS reference signal, install the GPS antenna and cabling in the selected location, then connect the cable to J2 on the GPS Sync PWB. Secure wires to the existing cabling and to the panel using arrowhead tyraps (Nautel Part # HAC15) in the ancillary kit (see Figure 9.4 on page 9-5...
  • Page 60 NX400 Installation Manual Installing control/monitor wiring Figure 9.1: GPS Sync PWB Configuration for GPS Antenna Part of GPS SYNC PWB (A1A11A5) (E2 shown configured for Nautel supplied 3.3 V antenna) Configuration for 5 V antenna (not supplied by Nautel) Configuration for 3.3 V antenna...
  • Page 61 NX400 Installation Manual Installing control/monitor wiring Figure 9.3: Remote Cable Entry REMOTE CABLE ENTRY Cable Entry Note: Wiring access hole has a removable plate with a pre-cut 1/4-inch dia hole. Use a chassis punch tool (e.g., Greenlee) to create the desired hole size (up to 2 inches) on the plate. Remove the plate to access a smaller, rectangular hole.
  • Page 62 NX400 Installation Manual Installing control/monitor wiring Figure 9.4: Remote Interface Connections For either top entry hole, route wiring to the hinged (left) side of the exciter panel RF MONITOR (J7) REMOTE OUTPUTS (J3, J4, J5) ANALOG OUTPUTS and EXT. +15 V IN...
  • Page 63 NX400 Installation Manual Installing control/monitor wiring Figure 9.5: Web Interface Connection Secure to existing ETHERNET cable with tyraps CABLE ENTRY A62A1 Connect to left-hand (LAN1) connector nearest the D-sub connectors) Page 9-6 Issue 1.0 2017-06-30...

  • Page 64: Commissioning Tasks

    (located on the rear door of each cabinet) and spray each of them on both sides with filter coat adhesive spray (Nautel Part # HQ59), located in the ancillary kit. Re-install the air filters on the transmitter.
  • Page 65 NX400 Installation Manual Commissioning tasks 5. Connect the dummy load’s interlock or, if necessary, simulate the closing of all external interlocks. This requires a short circuit between TB1-1 and TB1-2 and between TB1-3 and TB1-4 of the control/interface PWB. WARNING:...

  • Page 66: Commissioning

    1. Switch on the ac power at the service entrance to turn on the transmitter. 2. Check the alarm and status indications on the control cabinet’s AUI using the Transmitter Status page of the AUI. See the NX400 Operations & Maintenance Manual or the NX400 Troubleshooting Manual for detailed information.
  • Page 67 See the “Operating the Transmitter” section of the NX400 Operations & Maintenance Manual for detailed information. 16. Set the time and date on the AUI display. See the NX400 Operations and Maintenance Manual. 17. Using a web browser go to ftp://www3.nautel.com/NX_Series/...
  • Page 68 Installation Manual for details. 22. If you purchased the optional GPS Sync PWB, use the AUI to set the synchronization source to " GPS Sync Card ". See the “Operating the Transmitter” section of the NX400 Operations and Maintenance Manual for detailed information.
  • Page 69 NX400 Installation Manual Commissioning tasks Modulation checks Verify that the RF output is appropriately modulated when audio is applied: 1. Connect an appropriate modulation monitor to the control/interface PWB’s RF MONITOR BNC connector (J7). The RF monitor level is factory set for 5 Vrms. Ensure there is sufficient attenuation installed between the RF MONITOR connector and the modulation monitor.

  • Page 70: Going On-Air

    2. Connect the transmitter's RF output to an antenna system (or verify that the current connection is intact). Ensure that a ferrite toroid (Nautel Part # LX63) is installed on the RF coaxial hardline at the transmitter’s output. 3. Turn on the transmitter’s ac power.

  • Page 71: Network Setup

    IP Address, Netmask, Gateway and Nameserver sub-menus, as applicable. 4. Once you have established an IP address, you can login to the NX400’s advanced user interface (AUI), which allows you to remotely control and monitor the NX400. See the “Operating the transmitter”...

  • Page 72: Parts And Tools

    Parts supplied by Nautel Ancillary parts kit An ancillary parts kit is shipped with the NX400. This kit contains hardware needed during the installation process. The kit includes toroids, spare fuses, screws and other miscellaneous hardware. Issue 1.0 2017-06-30...

  • Page 73: Parts Not Supplied By Nautel

    See “NX400 transmitter manuals” on page xii Parts not supplied by Nautel Some parts and materials required to complete installation are not supplied by Nautel. The parts you need vary with the installation requirements. The list of parts you normally provide yourself during installation include: A suitable 50 ...

  • Page 74: Tools For Installation

    NX400 Installation Manual Parts and tools Tools for installation The tools you need during transmitter installation include the following: • Digital voltmeter • Philips screwdrivers, sizes #1 and #2 • Pliers • Wire cutters • Slot screwdriver, 5 mm (3/16 inch) •...
  • Page 75 NX400 Installation Manual Parts and tools Page 11-4 Issue 1.0 2017-06-30...

  • Page 76: Pre-Installation Consulting

    Pre-installation consulting Nautel field support specialists are available to answer questions and work with you to ensure that your site will be ready for the installation of your NX400 transmitter. For support, contact Nautel Customer Service and request assistance (“On-site support” on page...
  • Page 77 Ac power wiring for the transmitter has been installed and connected at the breaker panel or the building’s service entrance. If local electrical codes allow Nautel personnel to connect the transmitter to the ac supply, using the customer's cable, that task is included in this service.

  • Page 78: Online Documentation

    Nautel training programs are made up of individual modules that can be 'mixed and matched' to meet the customer’s specific training needs. All Nautel training courses are available at the Nautel Training Center.

  • Page 79: Standard Warranty

    4. If the Buyer receives a replacement module, as part of Nautel's module exchange program, the old module must be returned to Nautel within 30 days of receipt of the new module, at the buyers expense. If the old module is not received after 30 days, the customer will be invoiced. The buyer is responsible for installing the replacement/repaired module in the transmitter.
  • Page 80 Buyer's expense. Where no-charge warranty replacements or repairs are provided under items 2, 3, 4, or 5, Nautel will pay that part of the shipping costs incurred in returning the part/assembly to the Buyer. Note: the Buyer is responsible for any and all import fees, duties or taxes.
  • Page 81 Pre-installation / Installation assistance 13. Nautel provides telephone and email support for its products for the life of the product at no charge. After the warranty period, parts and on-site support for the equipment are offered at a rate to be determined upon request.
  • Page 82 Pre-installation / Installation assistance Module exchange service In order to provide Nautel customers with a fast and efficient service in the event of a problem, Nautel operates a factory rebuilt, module exchange service which takes full advantage of the high degree of module redundancy in Nautel equipment.

  • Page 83: Extended Warranties

    Extended warranties Nautel's standard four-year warranty provides excellent coverage and satisfies most customers’ needs. However, if you want extended coverage, Nautel offers one and two-year Extended Warranty Plans to cover electrical and mechanical repairs or replacements for all Nautel equipment.
  • Page 84 If Nautel’s service technicians are unable to solve the problem over the telephone, Nautel will give you an RMA number. You then return the module or circuit board to a Nautel service facility so that Nautel can provide a replacement. (Do not ship a component back to Nautel until you have an RMA number.)
  • Page 85 NX400 Installation Manual Pre-installation / Installation assistance Page 12-10 Issue 1.0 2017-06-30...

  • Page 86: List Of Terms

    NX400 Installation Manual List of terms Section 13: List of terms This section defines some of the terms that are used in Nautel documentation. Analog to Digital Converter. ADC. Audio Engineering Society/European Broadcasting Union (AES/EBU) is the name of a AES-EBU.
  • Page 87 Preset. day and date basis. Exciters can be configured on a preset for a specific operating mode (for example, Exciter A - conventional AM, and Exciter B - IBOC). The NX400 allows you to pre-program multiple presets. A complete loss of RF output power, caused by any one of a variety of faults, including Shutback.

  • Page 89: Issue 1.0 2017-06-30

    Phone: +1.902.823.3900 or Fax: +1.902.823.3183 Nautel Inc. 201 Target Industrial Circle Bangor, Maine USA 04401 Phone: +1.207.947.8200 Fax: +1.207.947.3693 Customer Service (24-hour support) +1.877.628.8353 (Canada & USA only) +1.902.823.5100 (International) Email: support@nautel.com Web: www.nautel.com © Copyright 2017 NAUTEL. All rights reserved.

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