Nautel XR12 Installation Manual
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Nautel XR12 Installation Manual

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Download this manual See also: Troubleshooting Manual, Operation & Maintenance Manual
XR12 Transmitter
Installation Manual
Document: XR12-INST
Issue:
3.0 2009-07-15
Status:
Preliminary

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Summary of Contents for Nautel XR12

  • Page 1 XR12 Transmitter Installation Manual Document: XR12-INST Issue: 3.0 2009-07-15 Status: Preliminary...
  • 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 2009 NAUTEL. All rights reserved.

  • Page 5: Table Of Contents

    XR12 Installation Manual Table of contents Contents About this manual About safety Safety precautions Preparing for installation Unpacking and positioning Installing the power transformer Connecting the station reference ground Connecting ac power Installing the RF connector Adjusting the spark gap...
  • Page 6 Commissioning 11-3 Going on-air 11-6 Parts and tools 12-1 Contacting Nautel 12-1 Parts supplied by Nautel 12-1 Parts not supplied by Nautel 12-2 Parts ordering 12-2 Module replacement program 12-2 Tools for installation 12-3 Pre-installation / Installation assistance 13-1 Pre-installation consulting...

  • Page 7: About This Manual

    XR12 Installation Manual About this manual This manual provides information about installing an XR12 transmitter. This manual is intended for use by qualified, trained installers. Technical support Nautel offers technical support to customers over the Internet and by telephone. Nautel’s customer support team will answer your questions and work with you to identify and resolve problems.

  • Page 8: List Of Terms

    The Nautel website provides useful resources to keep you up to date on your XR12. Nautel User Group (NUG) The website includes a special section that customers can log into in order to access the Nautel customer newsletter, product manuals, frequently asked questions (FAQ), information sheets, and information about field upgrades.

  • Page 9: About Safety

    XR12 Installation Manual About safety All Nautel transmitters are designed to meet the requirements of EN60215, Safety Requirements for Radio Transmitters. The philosophy of EN60215 is that the removal of any cover or panel that can only be opened using a tool is a maintenance activity, and that any person performing a maintenance activity is expected to be trained for that activity.
  • Page 10 XR12 Installation Manual Lightning hazards Before opening the transmitter and touching internal parts, remove and solidly ground the antenna connection. WARNING: It is not enough to ground the antenna terminal with the antenna still connected. Even a small impedance in the ground strap will result in lethal voltages during a lightning strike.

  • Page 11: Safety Precautions

    Personnel must be familiar with the transmitter, so that they can avoid physical danger, and be aware of hazards to themselves and the equipment. Nautel offers a number of training courses covering the basic fundamentals of RF systems and transmitters, and the operation and maintenance of the transmitter. For more information about available courses and schedules, go to the Nautel website at http://www.nautel.com/Training.aspx,...
  • Page 12 Operation of safety interlocks (if installed) First aid Nautel does not offer first aid training, since the hazards associated with high voltage and RF energy are not specific to the transmitter. However, the customer should provide first aid training to all per- sonnel who have access to the transmitter site.
  • Page 13 XR12 Installation Manual Marking hazards Place warning signs close to any hazardous areas or systems (e.g., the feedline or the antenna system). Make the signs large enough that they cannot be missed. Provide signage in all languages used in the region.
  • Page 14 (and to protect the rest of your site equipment and your personnel). For detailed information about lightning protection, see the Nautel Site Preparation Manual, available from your Nautel sales agent, or online from the Nautel website.
  • Page 15 XR12 Installation Manual Earthquake protection If the transmitter site is in a region that experiences any noticeable earthquake activity, take steps to prevent the transmitter from shifting or rocking during an earthquake. Even during minor earthquakes, rocking or movement of the transmitter is likely to damage the feedline connection, and could even cause a catastrophic failure of the ac power feed into the transmitter.
  • Page 16 XR12 Installation Manual Page xvi Issue 3.0 2009-07-15...

  • Page 17: Preparing For Installation

    8. Assemble your parts and tools. For a list of required tools, see “Parts and tools” on page 12-1. 9. When you are ready to install the XR12 transmitter, follow the steps shown in Figure 1.1 on page 1-2. When you have completed a task or step, put a check mark beside the step number.

  • Page 18: Unpacking And Positioning

    XR12 Installation Manual Preparing for installation Figure 1.1: Flowchart - Installing the transmitter Unpacking and positioning - see page 2-1 Installing the power transformer - see page 3-1 Connecting the station reference ground - see page 4-1 Connecting ac power - see page 5-1...

  • Page 19: Unpacking And Positioning

    1. Lift and slide the transmitter cabinet off the base of its crate. 2. If necessary, remove the power modules from the transmitter. Without the power transformer, and with the power modules installed, the XR12 transmitter weighs about 197.77 kg (436 lbs) CAUTION: An RF power module weighs approximately 20 kg (42 lbs.).
  • Page 20 XR12 Installation Manual Unpacking and positioning Figure 2.1: RF Power Module Top Mounting Screw Holes Rear Panel Cutout Bottom Mounting Screw Connector Page 2-2 Issue 3.0 2009-07-15...
  • Page 21 4. Verify that the ac power cable conduit from the ac disconnect switch reaches the entry point in the cabinet. 5. Verify that the RF feed cable reaches the RF output connector on the cabinet. Figure 2.2: XR12 Transmitter – Rear View 3 Packing Bolts Safety Ground Stud Assembly Connection Issue 3.0 2009-07-15...
  • Page 22 XR12 Installation Manual Unpacking and positioning Page 2-4 Issue 3.0 2009-07-15...

  • Page 23: Installing The Power Transformer

    Be sure to scrape any excess epoxy off the electrical joint area. Transformer taps Figure 3.1: XR12 power transformer line voltage tap layout LOAD 3 LINE 3...
  • Page 24 XR12 Installation Manual Installing the power transformer Table 3.1: Three-phase primary winding tap nominal voltages (rms, phase-to-phase) Voltage (V ac) Voltage (V ac) Voltage (V ac) Perform this procedure as part of installing the transmitter. WARNING: The main power transformer weighs approximately 110 kg (242 lbs). Do...
  • Page 25 7. Connect the ac line input to the X1 (Line 1), X2 (Line 2) and X3 (Line 3) input terminals on the transformer (see Figure 3.1 on page 3-1). The ac ground will be connected later. Figure 3.2: XR12 power transformer Installation Ground terminal Transformer...
  • Page 26 XR12 Installation Manual Installing the power transformer Page 3-4 Issue 3.0 2009-07-15...

  • Page 27: Connecting The Station Reference Ground

    4. Attach the 6 AWG wire from the safety ground stud assembly to the transformer ground. Figure 3.2 on page 3-3. 5. For information about grounding the lightning protection, see the XR12 Pre-Installation Manual. For detailed information about lightning protection, see the Nautel Site Preparation Manual, available from your Nautel sales agent, or online from the Nautel website.
  • Page 28 XR12 Installation Manual Connecting the station reference ground Figure 4.1: 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 29: Connecting Ac Power

    (see Figure 5.1). WARNING: Ensure that wiring sizes are appropriate. ac wiring must be installed by a qualified, locally-certified electrician. Figure 5.1: Location of the ac power cable entry (top view of XR12 transmitter) Rear AC IN AUDIO CABLE...
  • Page 30 XR12 Installation Manual Connecting ac power 2. Connect the ac power ground to the station reference ground. 3. Verify that the station reference ground and the transformer ground terminal are connected to the safety ground stud assembly on the rear of the transmitter, (see Figure 2.2 on page 2-3...

  • Page 31: Installing The Rf Connector

    XR12 Installation Manual Installing the RF connector Section 6: Installing the RF connector The XR12 comes with one of several types of RF output connectors. All types are illustrated in this section. Preparation WARNING: THE AC VOLTAGES PRESENT IN THE TRANSMITTER CAN BE FATAL. EXERCISE EXTREME CAUTION.
  • Page 32 XR12 Installation Manual Installing the RF connector Figure 6.1: XR12 Exciter Panel Assembly (NAE90A – A2) A2A6 Remote Interface PWB A2A2 A2A1 A2A3 RF Synthesizer Exciter Interphase PWB ‘A’ Interface PDM Driver PWB ‘A’ A2A4 RF Synthesizer A2A5 PWB ‘B’...
  • Page 33 XR12 Installation Manual Installing the RF connector 7/8 EIA Output Connection 1. Locate and unpack the output connector kit. 2. Attach the brass connector cup from the kit to the output strap using the M5 x 16 mm long hex head bolt, split washer and flat washer supplied, such that the cup is pointing towards...
  • Page 34 XR12 Installation Manual Installing the RF connector 1-5/8 EIA Output Connection 1. Locate and unpack the output connector kit. 2. Attach the brass connector cup from the kit to the output strap using the 5/16 x 1 inch long socket head cap screw, split washer and flat washer supplied, such that the cup is pointing...
  • Page 35 XR12 Installation Manual Installing the RF connector Stud Output Connector 1. Unpack the stud connector assembly. Remove the M6 nut, split washer and one flat washer off the longer leg of the brass stud in the stud plate (Figure 6.4).
  • Page 36 XR12 Installation Manual Installing the RF connector Page 6-6 Issue 3.0 2009-07-15...

  • Page 37: Adjusting The Spark Gap

    Section 7: Adjusting the spark gap The XR12’s RF output filter contains a spark gap that must be adjusted - based on frequency and site altitude - to provide protection against excessive voltage (i.e., lightning) on the RF output. If the altitude of the transmitter site is known prior to transmitter delivery, then the spark gap is adjusted at Nautel.
  • Page 38 XR12 Installation Manual Adjusting the spark gap Figure 7.1: RF Output Spark Gap Location Spark Gap Page 7-2 Issue 3.0 2009-07-15...
  • Page 39 XR12 Installation Manual Adjusting the spark gap Table 7.1: Spark Gap Setting versus Altitude Frequency (kHz) Spark Gap (in.) @ 0 ft. Altitude 0.163 0.161 0.159 0.157 0.156 0.154 0.152 0.151 0.149 0.148 0.146 0.145 0.143 0.142 0.141 0.139 0.138 0.137...
  • Page 40 XR12 Installation Manual Adjusting the spark gap Table 7.1: Spark Gap Setting versus Altitude (continued) Frequency (kHz) Spark Gap (in.) @ 0 ft. Altitude 0.197 0.195 0.193 0.192 0.190 0.188 0.187 0.185 0.183 0.182 0.180 0.179 0.177 0.176 0.174 0.173 0.172...
  • Page 41 XR12 Installation Manual Adjusting the spark gap Table 7.1: Spark Gap Setting versus Altitude (continued) Frequency (kHz) Spark Gap (in.) @ 0 ft. Altitude 0.154 0.153 0.152 0.151 0.150 0.149 0.148 0.147 0.146 0.145 0.144 0.143 0.142 0.141 0.141 0.140 0.139...
  • Page 42 XR12 Installation Manual Adjusting the spark gap Table 7.1: Spark Gap Setting versus Altitude (continued) Frequency (kHz) Spark Gap (in.) @ 0 ft. Altitude 0.128 0.127 0.126 0.126 1000 0.125 1005 0.124 1010 0.124 1015 0.123 1020 0.122 1025 0.122 1030 0.121...
  • Page 43 XR12 Installation Manual Adjusting the spark gap Table 7.1: Spark Gap Setting versus Altitude (continued) Frequency (kHz) Spark Gap (in.) @ 0 ft. Altitude 1130 0.110 1135 0.109 1140 0.109 1145 0.108 1150 0.108 1155 0.107 1160 0.107 1165 0.107 1170 0.106...
  • Page 44 XR12 Installation Manual Adjusting the spark gap Table 7.1: Spark Gap Setting versus Altitude (continued) Frequency (kHz) Spark Gap (in.) @ 0 ft. Altitude 1280 0.097 1285 0.097 1290 0.096 1295 0.096 1300 0.096 1305 0.095 1310 0.095 1315 0.095 1320 0.094...
  • Page 45 XR12 Installation Manual Adjusting the spark gap Table 7.1: Spark Gap Setting versus Altitude (continued) Frequency (kHz) Spark Gap (in.) @ 0 ft. Altitude 1430 0.088 1435 0.088 1440 0.087 1445 0.087 1450 0.087 1455 0.086 1460 0.086 1465 0.086 1470 0.086...
  • Page 46 XR12 Installation Manual Adjusting the spark gap Table 7.1: Spark Gap Setting versus Altitude (continued) Frequency (kHz) Spark Gap (in.) @ 0 ft. Altitude 1580 0.081 1585 0.080 1590 0.080 1595 0.080 1600 0.080 1605 0.080 1610 0.079 1615 0.079 1620 0.079...
  • Page 47 XR12 Installation Manual Adjusting the spark gap Table 7.2: Altitude Scale Factor Altitude (ft) Spark Gap Scale Factor Spark Gap (in.) (multiply gap by...) 1.00 1,000 1.05 2,000 1.10 3,000 1.16 4,000 1.23 5,000 1.30 6,000 1.38 7,000 1.47 8,000 1.58...
  • Page 48 XR12 Installation Manual Adjusting the spark gap Page 7-12 Issue 3.0 2009-07-15...

  • Page 49: Audio And Iboc Inputs

    10 kW RF carrier at the nominal ac voltage. IBOC input In Band On Channel (IBOC) audio is processed outside the XR12 in the customer’s IBOC generator – a separate, standalone system that feeds an IBOC signal to the transmitter’s mag and phase ports.

  • Page 50: Audio Configuration

    Figure 8.1 Figure 8.2 (a detail of the RF drive buffer PWB schematic in the XR12 Troubleshooting Manual). 1. E3 on the RF drive buffer PWB is set to HI to select high sensitivity. 2. O n the RF drive buffer PWB, E1 and E2 are both set to Int .
  • Page 51 XR12 Installation Manual Audio and IBOC inputs Routing Analog Installation Cables 1. Route audio cables through the cable entry hole in the transmitter’s top panel. See Figure 8.3 on page 8-6. 2. Route the cables through the ferrite toroid, provided in the ancillary kit, then toward the remote interface PWB, behind the GUI panel (see Figure 6.3 on page...
  • Page 52 If you provide a backup analog program stream to an exciter configured as analog in an IBOC installation, the system can automatically switch to the backup analog exciter and audio program stream. Refer to the XR12 Operating and Maintenance Manual for information about setting up exciter changeover.
  • Page 53 XR12 Installation Manual Audio and IBOC inputs 2. On the remote interface PWB, connect a jumper from J3-23 , and a jumper from J3-25 to ground ( TB2-4 ) permanently (or through the remote system). This will enable the IBOC inputs on Exciter A and B .
  • Page 54 XR12 Installation Manual Audio and IBOC inputs Figure 8.3: Location of cable entry hole (top view of XR12 transmitter) Front AUDIO CABLE ENTRY AC IN Rear Page 8-6 Issue 3.0 2009-07-15...

  • Page 55: Control And Monitoring

    LAN interface (NxLink) - see page 9-12 Controls The XR12’s graphic user interface (GUI) lets you control a number of transmitter functions and set parameters and schedules. (For detailed information about the GUI, refer to the XR12 Operating and Maintenance Manual.) In addition, you can control the on/off status, the active (A/B) exciter, the preset...
  • Page 56 XR12 Installation Manual Control and monitoring LVPS fault The +24 V, +15 V, -15 V and +5 V power supplies are monitored. A fault will be reported if the voltage varies by more than ± 10%. • One or more of these faults will result in only one LVPS Fault message on the Status screen, though each one would be logged separately in the Event Log .
  • Page 57 XR12 Installation Manual Control and monitoring Total power limit This fault is triggered when the product of the B+ (dc) voltage and the dc current is greater than 29 kVA (the limit set in software). • This fault causes an immediate cutback, but not a shutback.
  • Page 58 XR12 Installation Manual Control and monitoring Cutbacks Cutback level (1-8) If three shutbacks occur within five seconds, the transmitter will enter a power reduction mode called a cutback. There are eight levels of cutbacks, the last being a reduction to almost no forward power.
  • Page 59 XR12 Installation Manual Control and monitoring Softstart overtemp The software keeps track of the calculated temperature of the softstart resistors and triggers this fault if that value is greater than 150°C (302°F).While this fault is on, RF power will not be available.

  • Page 60: Remote Control Circuits And Alarms

    XR12 Installation Manual Control and monitoring Remote control circuits and alarms You can control the active (A/B) exciter, the on/off status of the RF power stage, the preset RF power level, the power level adjustment, and system alarm reset remotely. The remote interface PWB contains a selection circuit that lets you select internal (single ended input) or external (differential input) input for all controlled functions.
  • Page 61 XR12 Installation Manual Control and monitoring When you use an external dc voltage (24 V to Option 2 - Differential Input (External V dc). 30 V) as the current source for a control function's opto coupler, configure the control function's external switching circuit and the remote interface PWB’s selection circuit for a differential input.
  • Page 62 XR12 Installation Manual Control and monitoring • TB2-6 (-): PDM INHB terminal. Continuous active signal inhibits the PDM by causing a shut- back. This also works when the remote/local status is set to local. • TB1-1 and TB1-2: EXT INTLK terminals. A short circuit between the pins for normal operat- ing status, an open between these pins causes a shutback.
  • Page 63 XR12 Installation Manual Control and monitoring • TB1-14 (-): EXCITER A terminal. Causes a changeover to select exciter A as the main exciter. Setting is saved in current preset. Provide an active pulse to select this exciter. • TB1-16 (-): EXCITER B terminal. Causes a changeover to select exciter B as the main exciter.
  • Page 64 XR12 Installation Manual Control and monitoring • J3-13: Pwr Mod Fail. One or more power modules has a fault. • J3-12: Low B+. See “Low B+ voltage” on page 9-2. • J3-11: High VSWR. See “High VSWR shutback” on page 9-2.

  • Page 65: Remote Performance Monitoring

    XR12 Installation Manual Control and monitoring Remote performance monitoring The transmitter provides outputs that let you monitor RF performance. They include dc voltages that represent the forward power level, the reflected power level, the B+ voltage and the dc current. In addition, a true RF sample of the RF output voltage waveform is available for external monitoring.

  • Page 66: Lan Interface (Nxlink)

    LAN interface (NxLink) A serial port is available on 9-pin D-sub connector J12 of the XR12’s remote interface PWB. This port allows you to remotely control and interrogate the XR12’s operational status. If the NxLink Ethernet interface module option is installed and you wish to use it as the remote interface, connector J12 is linked to Port 1 of the NxLink module.

  • Page 67: Other Considerations

    XR12 Installation Manual Other considerations Section 10: Other considerations This section describes other considerations regarding the XR12 transmitter. • External RF drive source • External 10 MHz frequency reference - see page 10-2 External RF drive source You can apply an externally generated RF drive (carrier frequency only) to the remote interface board’s digital EXT RF IN BNC connector (J6).

  • Page 68: External 10 Mhz Frequency Reference

    XR12 Installation Manual Other considerations Installing an external RF drive source 1. If the RF drive for one or both exciters is to be applied from an external source, connect its wiring as follows: – Route RF drive coaxial cable through a cable entry hole in the cabinet and through the ferrite toroid, to the vicinity of the remote interface PWB.

  • Page 69: Commissioning Tasks

    XR12 Installation Manual Commissioning tasks Section 11: Commissioning tasks WARNING: Before applying ac power and turning on the transmitter, you must customize some circuits to the station's power source and operating requirements. Do not perform this pre-commissioning unless you are a station engineer or a competent electronics technician.
  • Page 70 Reasons for using a lower roll-off frequency are complex, but may include an antenna with sideband limitations, square-wave overshoot, or specific properties related to the audio processing. Nautel's field service department can provide recommendations based on your installation. 8. Refer to Table 11.1...

  • Page 71: Commissioning

    6. Look through the window on the left side of the transmitter’s lower rear panel (as seen from the back). Verify that all four power status LEDs are on. 7. Check the alarm and status indicators (the front panel and GUI). See the XR12 Operating and Maintenance Guide.
  • Page 72 18. Check the reflected power level. It should be near 0 W. 19. Set up preset power levels. See the XR12 Operating and Maintenance Guide. 20. Set up the RF monitor output. Depending on the setting of the remote interface PWB’s BYPASS/GAIN switch, the RF monitor should be set no higher than 1 V rms (2.8 V pp;...
  • Page 73 XR12 Installation Manual Commissioning tasks 25. Turn off the audio signal generator and increase the output level of the audio signal generator until a modulation depth of 100% is attained, as indicated on the modulation monitor. The audio signal generator's output level should be +10 dBm.

  • Page 74: Going On-Air

    3. Turn the transmitter’s ac power back on. 4. Use the transmitter controls and graphic user interface to begin transmitter operations. For detailed instructions, refer to the XR12 Operating and Maintenance Guide. Page 11-6 Issue 3.0 2009-07-15...

  • Page 75: Parts And Tools

    Parts supplied by Nautel Ancillary parts kit An ancillary parts kit is shipped with the XR12. This kit contains hardware needed during the installation process. The kit includes toroids, spare fuses, screws and other miscellaneous hardware. Issue 3.0 2009-07-15...

  • Page 76: Parts Not Supplied By Nautel

    See “XR12 transmitter manuals” on page vii. 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 Ω...

  • Page 77: Tools For Installation

    XR12 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 78 XR12 Installation Manual Parts and tools Page 12-4 Issue 3.0 2009-07-15...

  • Page 79: Pre-Installation / Installation Assistance

    Extended warranties - see page 13-7 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 XR12 transmitter. For support, contact Nautel Customer Service and request assistance (“On-site support”...
  • Page 80 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 81: 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 82: Standard Warranty

    Nautel for repair. The repairs will be made without charge to the Customer. 4. Where warranty replacements or repair are provided under items 2 or 3, Nautel will pay that part of the shipping costs incurred in returning the part/assembly to the Customer.
  • Page 83 7. Nautel shall have the privilege of investigating whether failures have been caused by factors beyond its control. 8. Nautel shall in no event be liable for any consequential damages arising from the use of this equipment. 9. When requesting a warranty repair/replacement, please provide complete and accurate information.
  • Page 84 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. This module exchange service is operated from Nautel's factory in Bangor, Maine and Hackett's Cove, Nova Scotia.

  • Page 85: Extended Warranties

    Extended warranties Nautel's standard 13-month 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 86 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 87 List of terms Section 14: List of terms This section defines some of the terms that are used in Nautel documentation. Audio Engineering Society/European Broadcasting Union (AES/EBU) is the name of a AES-EBU. digital audio transfer standard. The AES/EBU digital interface is usually implemented using 3-pin XLR connectors (the same type connector used in professional microphones).
  • Page 88 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 XR12 allows you to pre-program up to six presets. A complete loss of RF output power, caused by any one of a variety of faults, including Shutback.
  • Page 89 XR12 Installation Manual Index electrical power cables, 12-2 Numerics engineering support, 13-1 exciter, active, 9-1, 10 MHz Reference Input BNC connector, external control and monitor wiring, 12-2 10-2 external DC power supply, external monitoring circuit, active exciter external monitoring, 9-11...
  • Page 90 XR12 Installation Manual tools, 12-1 oscilloscope, 9-12 transformer taps, output voltage waveform, 9-11 transients, in remote control wiring, typical program content, 9-7, parts ordering 12-2 parts, 12-1 waveform, RF input voltage, 9-11 planning assistance, 13-1 website 12-2 preset power level...
  • Page 92 Toll Free: +1.877.6NAUTEL (6628835) (Canada & USA only) 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 2009 NAUTEL. All rights reserved.

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