Page 1 NX25/NX15 Transmitter Troubleshooting Manual Document: NHB-NX15-NX25-TRB Issue: 5.0 2016-05-06 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 2016 NAUTEL. All rights reserved.
Page 5: Table Of Contents
NX25/NX15 Troubleshooting Manual Table of contents Contents Release control record Responding to alarms Corrective maintenance Electrostatic protection Identifying an alarm Responding to alarms 1-41 Removing and reinstalling RF power modules 1-45 Troubleshooting RF power modules 1-48 Control/exciter panel board removal/replacement...
Page 6 NX25/NX15 Troubleshooting Manual Table of contents Parts Lists Parts information Family tree How to locate information about a specific part Column content OEM code to manufacturer’s cross-reference Common abbreviations/acronyms Wiring/connector lists Wiring lists provided Wiring lists not provided Connector mating information...
Page 7: Release Control Record
NX25/NX15 Troubleshooting Manual Release control record Issue Date Reason 2016-05-06 Introduction of NX15. Supports hardware NARA59C. Supports NX SW release NX4.7 or higher. Issue 5.0 2016-05-06 Page vii...
Page 8 NX25/NX15 Troubleshooting Manual Page viii Issue 5.0 2016-05-06...
Page 9: Responding To Alarms
• Other Module Replacement Procedures - see page 1-40 If none of the procedures and alarms described in this section address your problem, contact Nautel for assistance. Corrective maintenance Corrective maintenance procedures consist of identifying and correcting defects or deficiencies that arise during transmitter operation.
Page 10 NX25/NX15 Troubleshooting Manual Responding to alarms Remote troubleshooting Remote on-air troubleshooting consists of monitoring the transmitter's radiated signal using an on-air monitor, and observing the status of each remote fault alarm indicator. Information obtained from these sources should enable an operator to decide whether an alarm response may be deferred to a more convenient time, an immediate corrective action must be taken, or if a standby transmitter must be enabled (if one is available).
Page 11: Electrostatic Protection
NX25/NX15 Troubleshooting Manual Responding to alarms Electrostatic protection The transmitter's assemblies contain semiconductor devices that are susceptible to damage from electrostatic discharge. The following precautions must be observed when handling an assembly which contains these devices. CAUTION: Electrostatic energy is produced when two insulating materials are rubbed together.
Page 12: Identifying An Alarm
NX25/NX15 Troubleshooting Manual Responding to alarms Identifying an alarm The best way to identify an alarm is by viewing the front panel’s Transmitter Status page (Figure 1.1). If an alarm exists, the Status button at the bottom of the AUI display will be red. Press or click the Status button to go to the Transmitter Status page.
Page 13 5. If the troubleshooting and subsequent replacement of a suspect PWB or RF power module does not remove the fault condition, contact Nautel. NOTE: Before undertaking any troubleshooting, record all AUI meter readings and note if any other alarms are displayed on the Transmitter Status page .
Page 14 NX25/NX15 Troubleshooting Manual Responding to alarms Table 1.1: Troubleshooting Alarms Alarm (with Prefix) Description and Troubleshooting Action Controller: Audio Loss This alarm occurs if the modulation level is below the preset Shutdown threshold for the designated period of time set in the Audio Loss settings of the current preset, and the desired action was set to RF Inhibit.
Page 15 NX25/NX15 Troubleshooting Manual Responding to alarms Alarm (with Prefix) Description and Troubleshooting Action Controller: Combiner This alarm will only occur if the transmitter is connected in a Interlock Open combined system. The alarm indicates that the interlock signal from the combiner is open. When this alarm occurs, the transmitter immediately inhibits the PDM and the transmitter's output power drops to 0 W.
Page 16 NX25/NX15 Troubleshooting Manual Responding to alarms Alarm (with Prefix) Description and Troubleshooting Action Controller: EEPROM This alarm occurs when the transmitter is unable to read the Failure: Config following settings from EEPROM upon boot-up. The transmitter will revert to its initial default settings, which may be different from the values set before the transmitter was shipped.
Page 17 NX25/NX15 Troubleshooting Manual Responding to alarms Alarm (with Prefix) Description and Troubleshooting Action Controller: EEPROM This alarm occurs when the transmitter is unable to read its RF Failure: Potentiometers Symmetry Adjustment calibration from EEPROM upon boot-up. The alarm will remain asserted until the RF Symmetry has been re-calibrated.
Page 18 NX25/NX15 Troubleshooting Manual Responding to alarms Alarm (with Prefix) Description and Troubleshooting Action Controller: Exciter A (or This alarm occurs when the controller is configured to expect B) Not Responding exciter A (or B) is installed, and it has failed to receive any serial response from that exciter.
Page 19 PWB is not damaged. If not, verify the Fast SWR Shutback threshold is set properly (contact Nautel to obtain the correct setting for your transmitter). If this threshold is set...
Page 20 NX25/NX15 Troubleshooting Manual Responding to alarms Alarm (with Prefix) Description and Troubleshooting Action Controller: GPS Not This alarm indicates the transmitter is configured to use a GPS Responding sync PWB as a frequency and phase reference, but the controller is not receiving communication from the GPS sync PWB. The...
Page 21 NX25/NX15 Troubleshooting Manual Responding to alarms Alarm (with Prefix) Description and Troubleshooting Action Controller: High RF This alarm indicates the controller's RF Drive Duty Cycle meter Drive has risen above 60% for longer than 10 seconds. This alarm will cause an exciter changeover, if automatic changeover is enabled and the transmitter is operating on the main exciter.
Page 22 NX25/NX15 Troubleshooting Manual Responding to alarms Alarm (with Prefix) Description and Troubleshooting Action Controller: Internal This alarm will only be seen in transmitter logs, and indicates that Watchdog Reset the controller was reset by its internal watchdog. If this alarm persists, replace the control/interface PWB (see “Control/interface...
Page 23 NX25/NX15 Troubleshooting Manual Responding to alarms Alarm (with Prefix) Description and Troubleshooting Action Controller: Low RF Drive This alarm indicates the controller's RF Drive Duty Cycle meter has fallen below 40% for longer than 10 seconds. This alarm will cause an exciter changeover, if automatic changeover is enabled and the transmitter is operating on the main exciter.
Page 24 NX25/NX15 Troubleshooting Manual Responding to alarms Alarm (with Prefix) Description and Troubleshooting Action Controller: Rack 1 Not This alarm indicates that the controller is no longer receiving serial Responding communication from Rack 1. No action is taken. Check the wiring and connections between the control/interface PWB and the rack interface PWB and verify there is no damage.
Page 25 NX25/NX15 Troubleshooting Manual Responding to alarms Alarm (with Prefix) Description and Troubleshooting Action Exciter A/B: Audio Loss This alarm occurs as a result of the modulation being below the specified threshold for the designated period of time set in the remote AUI’s Audio Loss tab for the current preset.
Page 26 NX25/NX15 Troubleshooting Manual Responding to alarms Alarm (with Prefix) Description and Troubleshooting Action Exciter A/B: Cutback The forward power has been reduced due to multiple shutbacks. “Cutback:” on page 1-8 of the Operations & Maintenance Manual for a description of the cutback routine. Check for associated alarms and refer to their troubleshooting information to determine the specific cause of the cutback.
Page 27 NX25/NX15 Troubleshooting Manual Responding to alarms Alarm (with Prefix) Description and Troubleshooting Action Exciter A/B: High B+ This alarm indicates that the B+ voltage measured by the exciter Voltage exceeded the B+ setpoint by more than 20 V for at least ten (10) seconds.
Page 28 NX25/NX15 Troubleshooting Manual Responding to alarms Alarm (with Prefix) Description and Troubleshooting Action Exciter A/B: High This alarm indicates either the average temperature of the 10 Temperature Foldback hottest power modules in the transmitter has exceeded 80 degrees Celsius, or the rectifier heatsink temperature has...
Page 29 NX25/NX15 Troubleshooting Manual Responding to alarms Alarm (with Prefix) Description and Troubleshooting Action Exciter A/B: No Carrier This alarm will occur when the transmitter’s Sync Source is set to Sync Signal Present GPS Sync Card or Combiner and the 10 MHz or 1 kHz synchronization signal is either not present or out of specification.
Page 30 NX25/NX15 Troubleshooting Manual Responding to alarms Alarm (with Prefix) Description and Troubleshooting Action Exciter A/B: Over This alarm indicates the peak RF current at the output of the Current Shutback transmitter has exceeded the Peak RF Current Limit. This alarm causes the transmitter to immediately shut down its RF output and then recover.
Page 31 If the operating frequency has been changed inadvertently, change the frequency back to its original setting. If a frequency change has been performed, recalibrate the exciter per the Nautel provided frequency change procedure. Exciter A/B: SWR...
Page 32 NX25/NX15 Troubleshooting Manual Responding to alarms Alarm (with Prefix) Description and Troubleshooting Action Exciter A/B: Transmitter This alarm indicates that the associated exciter has not been Type Not Set informed of the type of transmitter it has been installed in. If the...
Page 33 Exgine: System Error This alarm acts as a summary alarm for a number of unexpected Exgine system conditions, such as failed memory checks or internal configuration errors. Contact Nautel Customer Service to troubleshoot this issue. Module: +15V Fail This alarm indicates the RF power module’s +15 V power supply is below +13.5 V or above +16.5 V.
Page 34 NX25/NX15 Troubleshooting Manual Responding to alarms Alarm (with Prefix) Description and Troubleshooting Action Module #: External This alarm indicates the PDM cable has been disconnected from Disable Active the front of the RF power module, which causes the power module to be immediately disabled. If this alarm occurs, reconnect the PDM drive cable associated with that RF power module.
Page 35 NX25/NX15 Troubleshooting Manual Responding to alarms Alarm (with Prefix) Description and Troubleshooting Action Module #: High RF Drive This alarm indicates the RF drive duty cycle as measured by the RF power module is above 65%. The affected RF power module is immediately disabled.
Page 36 NX25/NX15 Troubleshooting Manual Responding to alarms Alarm (with Prefix) Description and Troubleshooting Action Module #: Low Fan 1 (or This alarm occurs if the RF power module is expected to produce 2) Speed RF power and the fan (1 or 2) tachometer drops below 1650 RPM.
Page 37 NX25/NX15 Troubleshooting Manual Responding to alarms Alarm (with Prefix) Description and Troubleshooting Action Module #: This alarm indicates the RF power module's PDM Duty Cycle Overmodulation meter is above 95%. Verify the modulation being applied to the transmitter is not too high. Try swapping the RF power module with an RF power module that is not showing this alarm.
Page 38 NX25/NX15 Troubleshooting Manual Responding to alarms Alarm (with Prefix) Description and Troubleshooting Action Rack #: Arc Detector 1 This alarm indicates that the transmitter’s arc detector has detected an arc and caused the transmitter to shut back. Due to the sensitivity of the arc detector, it is possible for an external UV source to cause this alarm.
Page 39 NX25/NX15 Troubleshooting Manual Responding to alarms Alarm (with Prefix) Description and Troubleshooting Action Rack #: High B+ Voltage If the B+ voltage is more than 10 V above the B+ voltage set point, the rack interface will attempt to decrease the rectifier’s output. If...
Page 40 NX25/NX15 Troubleshooting Manual Responding to alarms Alarm (with Prefix) Description and Troubleshooting Action Rack #: Low B+ Voltage If the B+ voltage falls to more than 15% below the B+ voltage set point, the rack interface will attempt to turn up the rectifier output voltage.
Page 41 NX25/NX15 Troubleshooting Manual Responding to alarms Alarm (with Prefix) Description and Troubleshooting Action Rack #: +15 V A (or B) The digital fault reporting output of either +15 V power supply (U3 Fail or U4) is active. If the overall +15 V Fail alarm is active, follow the troubleshooting steps for that alarm.
Page 42 NX25/NX15 Troubleshooting Manual Responding to alarms Alarm (with Prefix) Description and Troubleshooting Action Rack #: +48 V A (or B) If the overall +48 V Fail alarm is active, follow the troubleshooting Fail steps for that alarm. Otherwise, check continuity of the cabling between the associated +48 V power supply and the rack interface PWB.
Page 43 NX25/NX15 Troubleshooting Manual Responding to alarms Table 1.2: Troubleshooting Summary Alarms Summary Alarm Name, AUI (front Description and Triggering Alarms panel UI) Audio Loss Summary This summary alarm is triggered if any of the following audio loss related alarms (Audio Loss Summary)
Page 44 NX25/NX15 Troubleshooting Manual Responding to alarms Table 1.2: Troubleshooting Summary Alarms Summary Alarm Name, AUI (front Description and Triggering Alarms panel UI) External Fault This summary alarm is triggered if any of the following external alarms occur: Summary (External Summary)
Page 45 NX25/NX15 Troubleshooting Manual Responding to alarms Table 1.2: Troubleshooting Summary Alarms Summary Alarm Name, AUI (front Description and Triggering Alarms panel UI) Maintenance Fault This summary alarm is triggered if any of the following maintenance related Summary alarms occur: (Maintenance...
Page 46 NX25/NX15 Troubleshooting Manual Responding to alarms Table 1.2: Troubleshooting Summary Alarms Summary Alarm Name, AUI (front Description and Triggering Alarms panel UI) Off Air Summary This summary alarm is triggered if any of the following off-air related alarms (Off Air Summary)
Page 47 NX25/NX15 Troubleshooting Manual Responding to alarms Table 1.2: Troubleshooting Summary Alarms Summary Alarm Name, AUI (front Description and Triggering Alarms panel UI) Power Supply Fault This summary alarm is triggered if any of the following power supply related Summary alarms occur:...
Page 48 NX25/NX15 Troubleshooting Manual Responding to alarms Table 1.3: Module Replacement Procedures Module Replacement Procedure RF Power Module page 1-45 Power Amplifier MOSFET page 1-51 Modulator MOSFET page 1-53 Remote Interface PWB page 1-55 Digital AM Exciter PWB page 1-55 Control/Interface PWB...
Page 49: Responding To Alarms
NX25/NX15 Troubleshooting Manual Responding to alarms Responding to alarms Controller: External PDM Inhibit The external PDM inhibit is wired to the control/interface PWB. A Controller: External PDM Inhibit alarm indicates that an external PDM inhibit command is present. The alarm could be caused by an short circuit in the external wiring path to the control/ interface PWB or a fault in the switching circuitry on the control/interface PWB.
Page 50 NX25/NX15 Troubleshooting Manual Responding to alarms 5. If 15 V is present on J6-5 and J6-1, the external interlock circuit is open (normally caused by an open interlock switch). Module faults There are many alarms on the AUI, prefixed by the text Module , that indicate faults related to one or more of the 10 RF power modules in a cabinet.
Page 51 NX25/NX15 Troubleshooting Manual Responding to alarms RF power module troubleshooting Refer to “Removing and reinstalling RF power modules” on page 1-45 for removal and installation instructions and then refer to “Troubleshooting RF power modules” on page 1-48 for detailed troubleshooting information.
Page 52 2. If the transformer taps are correct, the monitoring circuit is suspect. Contact Nautel for troubleshooting information. Page 1-44...
Page 53: Removing And Reinstalling Rf Power Modules
NX25/NX15 Troubleshooting Manual Responding to alarms Removing and reinstalling RF power modules Removing an RF power module 1. Confirm the location of the RF power module that is being removed. Note the alarm text includes a Module serial address that is also identified on the front panel of each RF power module.
Page 54 NX25/NX15 Troubleshooting Manual Responding to alarms Figure 1.2: Disabling/Enabling an RF Power Module Green indicates enabled. Click to disable (will turn red); click again to re-enable (will turn green) Page 1-46 Issue 5.0 2016-05-06...
Page 55 RF power module is enabled. You should hear a relay in the back of the transmitter pick up (energize). 5. Upgrade the subsystem software using the AUI’s Upgrade Software page under the System Settings menu. See the NX25/NX15 Operations and Maintenance Manual for detailed instructions. Figure 1.3: RF Power Module Locations...
Page 56: Troubleshooting Rf Power Modules
• A soldering iron and desoldering tool. • An NX25/NX15 spares kit (contains replacement semi-conductors). Electrostatic Precautions The RF power module contains semiconductor devices that are susceptible to damage from electrostatic discharge. Be sure to follow the electrostatic precautions in “Electrostatic protection”...
Page 57 2. If the diode is not satisfactory, replace the it by desoldering its surface-mount leads and case from the PWB. Locate a replacement diode (Nautel Part # QM54) in the spares kit, if purchased, and solder it to the PWB, noting correct orientation.
Page 58 NX25/NX15 Troubleshooting Manual Responding to alarms Figure 1.4: RF Power Module MOSFET and Diode Location G D S G D S Modulator MOSFETs G D S Freewheel diode Partial View of NAPA34 Modulator/Power Amplifier PWB Some parts removed for clarity...
Page 59 5. Ensure the surface of the chassis/heat sink is clean and free of debris. 6. Obtain a replacement MOSFET (Nautel Part # QR) and a new thermal pad (Nautel Part # HAK55) from the spares kit, if purchased, and install them on the RF power module chassis using the two M4 screws removed in step 3.
Page 60 NX25/NX15 Troubleshooting Manual Responding to alarms Figure 1.5: Power Amplifier FET Replacement Page 1-52 Issue 5.0 2016-05-06...
Page 61 6. Apply a thin film of thermal compound to the heatsink. 7. Obtain a replacement MOSFET (Nautel Part # QR75) from the spares kit, if purchased, and install it on the heat sink using the alignment post on the heat sink as an installation aid.
Page 62: Control/Exciter Panel Board Removal/Replacement
AM exciter PWBs and the remote interface PWB. NOTE: To remove the control/interface PWB, you must first remove either the remote interface PWB or both digital AM exciter PWBs. Figure 1.6: NX25/NX15 Control/Exciter Panel Remote Control/ Interface PWB...
Page 63 NX25/NX15 Troubleshooting Manual Responding to alarms Remote interface PWB replacement 1. Remove and retain six sets of mounting hardware from the remote interface PWB (A11A4). 2. Pull the remote interface PWB away from the control/interface PWB (A11A1). It may be helpful to gently pry the connector loose with a screwdriver.
Page 64 NX25/NX15 Troubleshooting Manual Responding to alarms Figure 1.8: NCode Uploader Menu Page 1-56 Issue 5.0 2016-05-06...
Page 65 In this case, repeat Step 2 through Step 6 for the operational exciter’s digital AM exciter PWB. If there is no operational exciter, contact Nautel for the required calibration data. Issue 5.0 2016-05-06 Page 1-57...
Page 66 NX25/NX15 Troubleshooting Manual Responding to alarms Figure 1.10: Upload DSP Firmware Menu - Select an Option 8. Remove and retain four sets of mounting hardware from the digital AM exciter PWB being replaced (A11A2 or A11A3). 9. Pull the digital AM exciter PWB away from the control/interface PWB (A11A1). It may be helpful to gently pry the connector loose with a screwdriver.
Page 67 16. On the front panel AUI, reset any active alarms. 17. Upgrade the subsystem software using the AUI’s Upgrade Software page under the System Settings menu. See the NX25/NX15 Operations and Maintenance Manual for detailed instructions. 18. Set the transmitter to its RF On state.
Page 68 7. Remove and retain 13 sets of mounting hardware from the control/interface PWB (A11A1). 8. Obtain a replacement control/interface PWB (Nautel Part # NAPC160B/01). 9. Set the COMB CONT INTLK (E1) and REMOTE SUPPLY (E3) jumpers on the replacement PWB to the same positions as the defective PWB.
Page 69 Step 14. Upgrade the subsystem software using the AUI’s Upgrade Software page under the System Settings menu. See the NX25/NX15 Operations and Maintenance Manual for detailed instructions. GPS Sync PWB replacement 1. Remove and retain four sets of mounting hardware from the GPS sync PWB being replaced (A11A5).
Page 70: Pdm Drive Distribution Pwb Replacement
NX25/NX15 Troubleshooting Manual Responding to alarms PDM Drive Distribution PWB replacement WARNING: Lethal voltages exist inside the transmitter when the power is turned on. Turn off the power at the source and verify the 10 bright green LEDs on the power module interface PWBs - in the back of each cabinet - are off before removing any connections or PWBs.
Page 71: Rf Drive Distribution Pwb Replacement
NX25/NX15 Troubleshooting Manual Responding to alarms RF drive distribution PWB replacement WARNING: Lethal voltages exist inside the transmitter when the power is turned on. Turn off the power at the source and wait until the 10 bright green LEDs on the power module interface PWBs - in the back of each cabinet - are off before removing any connections or PWBs.
Page 72: Rack Interface Pwb Replacement
NX25/NX15 Troubleshooting Manual Responding to alarms Rack Interface PWB replacement WARNING: Lethal voltages exist inside the transmitter when the power is turned on. Turn off the power at the source and wait until the 10 bright green LEDs on the power module interface PWBs - in the back of each cabinet - are off before removing any connections or PWBs.
Page 73 NX25/NX15 Troubleshooting Manual Responding to alarms 6. Obtain a replacement rack interface PWB (Nautel Part # NAPI152A) and set DIP switch S1 as follows. S1 Position A6 Setting OPEN OPEN OPEN CLOSED CLOSED CLOSED OPEN OPEN 7. Reverse Step 1...
Page 74: Scr Rectifier Inspection/Replacement
NX25/NX15 Troubleshooting Manual Responding to alarms SCR Rectifier Inspection/Replacement WARNING: Lethal voltages exist inside the transmitter when the power is turned on. Turn off the power at the source and wait until the 10 bright green LEDs on the power module interface PWBs - in the back of each cabinet - are off before removing any connections or assemblies.
Page 75 NX25/NX15 Troubleshooting Manual Responding to alarms 2. If you are responding to a Rectifier Fan 1 (or 2) Fail alarm (if not, proceed to Step 3), inspect the SCR rectifier assembly’s cooling fans (see Figure 1.14 on page 1-66) for debris that might restrict proper movement of the fan blades.
Page 76: Low Voltage Power Supply Replacement
NX25/NX15 Troubleshooting Manual Responding to alarms Low Voltage Power Supply Replacement WARNING: Lethal voltages exist inside the transmitter when the power is turned on. Turn off the power at the source and wait until the 10 bright green LEDs on the power module interface PWBs - in the back of each cabinet - are off before removing any connections or assemblies.
Page 77: Rf Power Module Fan Tray Replacement
NX25/NX15 Troubleshooting Manual Responding to alarms 4. Remove the power supply module from the transmitter, noting its reference designation (U3 through U7) should be marked on the side panel near the module. 5. Reverse Step 1 through Step 4 to reinstall the new power supply module. Reconnect all wiring.
Page 78 NX25/NX15 Troubleshooting Manual Responding to alarms Page 1-70 Issue 5.0 2016-05-06...
Page 79: Detailed Circuit Descriptions
Remote interface PWB (NAPI106) - see page 2-8 • RF power module (NAP39A) - see page 2-9 NX25/NX15 electrical schematics The descriptions in this section all refer to the NX25/NX15 electrical schematics listed in Table 5.1 on page 5-5 of the NX25/NX15 Troubleshooting Manual.
Page 80 NX25/NX15 Troubleshooting Manual Detailed Circuit Descriptions The RF drive signals are applied to high speed comparators U13:A and U42:A, which are used to generate a square wave. These comparators also receive threshold data from digital potentiometer U38, which acts to control the RF drive duty cycle. The outputs of the high speed comparators are applied to multiplexer U22, which selects the active RF drive signal based on the status of the Select Side B input on U22-1.
Page 81 NX25/NX15 Troubleshooting Manual Detailed Circuit Descriptions Synchronization input selection Various synchronization inputs (1 PPS, 1 kHz and 10 MHz) can be applied to the control/interface PWB. Selection circuits determine which sources (A or B, then internal or external) provide the signals applied to the digital AM exciter PWBs via connectors J17 (exciter A) and J19 (exciter B).
Page 82 NX25/NX15 Troubleshooting Manual Detailed Circuit Descriptions RF monitor circuit Forward and reflected power samples of the transmitter’s RF output are applied from the RF output filter to the Fwd Pwr Sample (J4-1) and Refld Pwr Sample (J4-7) inputs. One of these inputs, as selected by RF MON switch S5, is applied through variable gain amplifier U67, current feedback amplifier U64:A and transformer T1 to the RF MONITOR BNC output (J7).
Page 83: Digital Am Exciter Pwb (Nape78A/01)
NX25/NX15 Troubleshooting Manual Detailed Circuit Descriptions Digital AM exciter PWB (NAPE78A/01) Figure 2.1 on page 2-5. Detailed electrical schematics have not been included in this manual. Figure 2.1: Block Diagram - Digital Exciter Block Diagram The DSP (U25) is an Analog Devices BF533 “Blackfin” IC. It provides initial data conditioning, including initial filtering and interpolation of incoming audio or digital radio data before it is applied to the FPGA.
Page 84 NX25/NX15 Troubleshooting Manual Detailed Circuit Descriptions Figure 2.2: Block Diagram - FPGA Equalizer Equalizer 8x FIR 8x FIR AM/AM AM/AM 32x CIC 32x CIC 9 Phase PDM 9 Phase PDM I,Q to Mag I,Q to Mag 9 PDM 9 PDM FIR –...
Page 85 NX25/NX15 Troubleshooting Manual Detailed Circuit Descriptions Audio and IBOC digitization Differential analog audio is applied to J2-10 (+) and J2-22 (-). Differential line receiver U29 converts the incoming audio to a single-ended signal and ADC U35 digitizes the signal. Analog audio can also be applied - in AES/EBU format - to J2-8.
Page 86: Remote Interface Pwb (Napi106)
NX25/NX15 Troubleshooting Manual Detailed Circuit Descriptions RS-485 interface Communications between the exciter and the front panel AUI are performed via an RS485 serial bus. The front panel AUI sends configuration settings for the exciter, such as operating frequency, power level and audio input. The exciter sends status and error conditions to the AUI.
Page 87: Rf Power Module (Nap39A)
NX25/NX15 Troubleshooting Manual Detailed Circuit Descriptions RF power module (NAP39A) See electrical schematics Figures SD-24 and SD-25. The RF power module is effectively four wideband RF amplifiers for the AM broadcast frequency band (530 - 1710 kHz). It operates from a 400 V dc bus with a carrier output level of 2500 W and can deliver peak power levels of 13.25 kW.
Page 88 NX25/NX15 Troubleshooting Manual Detailed Circuit Descriptions FET Driver FET drivers U12:A, U14:A and U15:A are capable of switching at very high speeds and sinking/ sourcing high amounts of current. These devices switch the energy required to turn the modulator power MOSFETs’ gates on and off. They also contain enable circuitry that allows the PDM signals to be interrupted immediately during a fault condition.
Page 89 NX25/NX15 Troubleshooting Manual Detailed Circuit Descriptions The modulator filter’s output voltage is across capacitors C116 and C117, but is not ground referenced. The output (PA voltage) applied to the RF power amplifier will be positive and is the sum of a dc component (carrier level) and an ac component (modulating source). The output voltage is related directly to the PDM positive duty cycle.
Page 90 NX25/NX15 Troubleshooting Manual Detailed Circuit Descriptions Gate Drive Circuit Each RF power MOSFET is driven individually by gate driver IC's U23:A, U24:A, U26:A, and U29:A. The #RF_Drive_Enable+ is controlled by microcontroller U22 through Q5. This allows the microcontroller to perform proper shutdown sequencing during a fault condition.
Page 91 NX25/NX15 Troubleshooting Manual Detailed Circuit Descriptions Fast RF drive loss detection is accomplished using XOR gate U25:A and comparator U18:A. The XOR gate monitors both RF drive signals and, during normal operation, delivers a short low pulse during the dead time between the two drive signals. If one of the drive signals is lost the XOR gate produces a longer pulse equal to half of the carrier period plus two dead times.
Page 92 NX25/NX15 Troubleshooting Manual Detailed Circuit Descriptions Control, Monitoring and Protection Microprocessor U22 performs all control, monitoring, and protection services required. It monitors analog samples and alarm conditions and will report back to a rack master controller via a serial data bus.
Page 93 NX25/NX15 Troubleshooting Manual Detailed Circuit Descriptions During normal operation the RF shorting relay is in an open state. U22 sends out a 5 V pulse for 50 ms to the gate of Q4. This allows Q4 to conduct current through the ‘release’ coil causing the RF shorting relay to open its contacts.
Page 94 NX25/NX15 Troubleshooting Manual Detailed Circuit Descriptions Fast overcurrent conditions are detected through the use of an internal comparator of U22. The unfiltered dc current sample flows through diode CR10 and receives high frequency filtering with R91 and C91. This voltage is applied to the comparator input AIN0 (pin 10) of U22. The comparator reference voltage is applied to AIN1 (pin 11) of U22 and is set through resistors R84 and R85.
Page 95 NX25/NX15 Troubleshooting Manual Detailed Circuit Descriptions Each power module monitors the tachometer signals from both fans that are Fan Tach A and B: operating within its respective column. The fan tachometer output is an open collector output that will switch on and off in direct relation to the fan speed. Pullup resistors R88 and R73 provide switching signals from 0 to 5 V.
Page 96 NX25/NX15 Troubleshooting Manual Detailed Circuit Descriptions Page 2-18 Issue 5.0 2016-05-06...
Page 97: Parts Lists
(Figure 3.1 on page 3-7) and identify the block(s) associated with the Nautel nomenclature. At the bottom of each family tree block, a reference is made to “See Part Number Index Table”. Locate the part's reference designation in the identified reference designation list in this section, noting they are sorted alphanumerically.
Page 98: Column Content
Nautel part (e.g., 207-8564-01) • optional kits that are assigned a numbered Nautel part To obtain the full reference designation for a specific part the Nautel configuration control number must be located in the family tree (Figure 3.1 on page 3-7) to include the reference designation of all higher level assemblies.
Page 99: Oem Code To Manufacturer's Cross-Reference
Nautel's normal supply source for that part. Note: OEM code 37338 is listed for parts manufactured by Nautel or to a Nautel control drawing. United States of America customers should refer all replacement part orders to Nautel Maine Incorporated (OEM code 57655).
Page 100: Common Abbreviations/Acronyms
NX25/NX15 Troubleshooting Manual Parts Lists Common abbreviations/acronyms The following abbreviations/acronyms may appear in the Description of Part column: • Denotes item is designed to be installed using Surface Mount Technology. • Denotes item is a Mass Termination Assembly connector. •...
Page 101 NX25/NX15 Troubleshooting Manual Parts Lists Table 3.1: OEM Codes / Manufacturers OEM Code Manufacturer OEM Code Manufacturer 22421 Thomas and Betts Limited 79942 Intel Corp Sales Office 23598 Ross Engineering Corp. 7D893 Fairchild Semiconductor Corporation 23875 M-Tron Industries Incorporated 80294...
Page 102 NX25/NX15 Troubleshooting Manual Parts Lists Table 3.1: OEM Codes / Manufacturers OEM Code Manufacturer OEM Code Manufacturer PANAS Panasonic SL575 Meanwell Sales Information PHOENIX See 5Y407 See 54583 SARONIX Saronix TEXAS See ER737 SAW84 IEI Technology Corp. U3040 ST Microelectronics...
Page 103 NX25/NX15 Troubleshooting Manual Parts Lists Figure 3.1: NX25 Family Tree 15 kW or 25 kW AM BROADCAST TRANSMITTER NARA59C A1 - A5 RF COMBINER BACK PLANE RACK INTERFACE PWB RF DRIVE DISTRIBUTION PWB NAH60A NAPI152A NAPI98 A1A1 - A5A1 A1A1A2 - A5A1A2...
Page 104 NX25/NX15 Troubleshooting Manual Parts Lists Page 3-8 Issue 5.0 2016-05-06...
Page 105 REFDES DESCRIPTION NAUTEL # VENDOR # OEM CODE Gas Discharge Tube, 600V, Fail Short UM98 SL1024A600RF(RoHS 75915 207-6111 Voltage Probe Assy, NX15/ NX25 REFDES DESCRIPTION NAUTEL # VENDOR # OEM CODE Capacitor, Mica, Dipped, 9100pF 2% 500V CB06 CM07FD912G03 14655...
Page 106 Transducer, Current, 0.1V/A,150Arms max, Isolated, UC89 CM-10-LI-U 31283 Unpaint 207-7055-05 15/25/50KW Rectifier Assy REFDES DESCRIPTION NAUTEL # VENDOR # OEM CODE AC Power Indicator Assy,NX15/NX25/50 207-7144-02 207-7144-02 37338 Capacitor, Non-Polarized, 10uf, +/-20%, 35V CS68 NNR100M35V5X11 NICCOMP Capacitor, Ceramic, 0.1uF 10%100V CCG07 CKR06BX104KRV 56289...
Page 107 207-7144-02 AC Power Indicator Assy,NX15/NX25/50 REFDES DESCRIPTION NAUTEL # VENDOR # OEM CODE DS01 LED, Pilot Light, Amber, 230Vac BAP44 LEDTECA220AC DS02 LED, Pilot Light, Amber, 230Vac BAP44 LEDTECA220AC DS03 LED, Pilot Light, Amber, 230Vac BAP44 LEDTECA220AC DS04 LED, Pilot Light, Amber, 230Vac...
Page 108 207-8564-02 Cableform, Main, NX15/NX25 REFDES DESCRIPTION NAUTEL # VENDOR # OEM CODE Lug, Crimp, Joint, Butt,16-14 AWG, Blue HAR29 320562 09482 Lug, Crimp, Joint, Butt,16-14 AWG, Blue HAR29 320562 09482 Conn,Quick-Dis,F,1/4 Tab 14-16Shrink HAM69 B-106-3632 06090 Conn,Quick-Dis,F,1/4 Tab 14-16Shrink HAM69...
Page 109 Continued from previous page 207-8564-02 Cableform, Main, NX15/NX25 REFDES DESCRIPTION NAUTEL # VENDOR # OEM CODE Conn, Coax, BNC, Plug, 50ohm,Crimp JDP24 225395-7 09482 Conn, Coax, BNC, Plug, 50ohm,Crimp JDP24 225395-7 09482 Conn, HRS, DF11, 2mm, DualSocket 6, Crimp JU56...
Page 110 207-8578-01 Cableform, RF NX15/NX25 REFDES DESCRIPTION NAUTEL # VENDOR # OEM CODE Cable, Ethernet, 56", Shld, Black, 28AWG, 80degC, UA203 PCF-S56I- with guard UA203G(RoHS) Not Used NOT USED 37338 Cable, Ethernet, 67", Shld, Black, 28AWG, 80degC, UA214 PCF-S67I- with guard...
Page 111 207-8579-02 Cableform, PDM NX25 (RLS 3) REFDES DESCRIPTION NAUTEL # VENDOR # OEM CODE Not Used NOT USED 37338 Cable, Ethernet, 33", Shld, Black, 28AWG, 80degC, UA212 PCF-S33I- with guard UA212G(RoHS) Not Used NOT USED 37338 Cable, Ethernet, 21", Shld, Black, 28AWG, 80degC,...
Page 112 Header, 4-pin, Square, Pol,0.1", Rt Angle, PCB mount JT157 22053041 13150 Installed at Next Higher Assy INSTALLED AT NEXT 37338 HIGHER ASSY NAE96C/01 Control/Exciter Panel Assy.NX15/NX25-NX100 REFDES DESCRIPTION NAUTEL # VENDOR # OEM CODE Control/Interface PWB Assy, NXSeries NAPC160B/01 207-3030-04...
Page 113 NAFP106B/02 Directional Coupler (FWD/REFLPWR) for NX15/NX25 REFDES DESCRIPTION NAUTEL # VENDOR # OEM CODE Directional Coupler PWB Assy,NX15/NX25 NAPP10/02 207-6280-07 37338 Capacitor, Ceramic, 50pF +10%15000V CCG42 T500K99COGW8570 56699 Transformer Current Assy 207-6052-01 207-6052-01 37338 NAH60A Back Plane, RF Combiner - (<-- TOP)
Page 114 NAPA34A Modulator/RF Amplifier PWBAssy, NX Series REFDES DESCRIPTION NAUTEL # VENDOR # OEM CODE C001 Cap,SMT,Ceramic,0.1uF,10%,50V,X7R,0805 CCFS07 C0805C104K5RAC 31433 C002 Cap,SMT,Ceramic,1uF,10%,100V,X7R,1210 CCFS60 12101C105KAT2A(RO AVX CORP C003 Not Used NOT USED 37338 C004 Not Used NOT USED 37338 C005 Cap,SMT,Tantalum,10uF,10%,35V,2917 CTFS03...
Page 115 Continued from previous page NAPA34A Modulator/RF Amplifier PWBAssy, NX Series REFDES DESCRIPTION NAUTEL # VENDOR # OEM CODE C035 Not Used NOT USED 37338 C036 Not Used NOT USED 37338 C037 Not Used NOT USED 37338 C038 Not Used NOT USED...
Page 116 Continued from previous page NAPA34A Modulator/RF Amplifier PWBAssy, NX Series REFDES DESCRIPTION NAUTEL # VENDOR # OEM CODE C071 Cap,SMT,Ceramic,1uF,10%,100V,X7R,1210 CCFS60 12101C105KAT2A(RO AVX CORP C072 Cap,SMT,Ceramic,0.1uF,10%,50V,X7R,0805 CCFS07 C0805C104K5RAC 31433 C073 Cap,SMT,Ceramic,1uF,10%,100V,X7R,1210 CCFS60 12101C105KAT2A(RO AVX CORP C074 Cap,SMT,Ceramic,1uF,10%,100V,X7R,1210 CCFS60 12101C105KAT2A(RO AVX CORP C075 Cap,SMT,Ceramic,0.1uF,10%,50V,X7R,0805...
Page 117 Continued from previous page NAPA34A Modulator/RF Amplifier PWBAssy, NX Series REFDES DESCRIPTION NAUTEL # VENDOR # OEM CODE C104 Cap,SMT,Ceramic,1uF,10%,100V,X7R,1210 CCFS60 12101C105KAT2A(RO AVX CORP C105 Cap,SMT,Ceramic,1uF,10%,100V,X7R,1210 CCFS60 12101C105KAT2A(RO AVX CORP C106 Cap,SMT,Ceramic,0.1uF,10%,50V,X7R,0805 CCFS07 C0805C104K5RAC 31433 C107 Cap,SMT,Ceramic,1uF,10%,100V,X7R,1210 CCFS60 12101C105KAT2A(RO AVX CORP...
Page 118 Continued from previous page NAPA34A Modulator/RF Amplifier PWBAssy, NX Series REFDES DESCRIPTION NAUTEL # VENDOR # OEM CODE C132 Not Used NOT USED 37338 C133 Capacitor, SMT, 0.47u, 630V,X7R, 20%, j-lead, MLCC CT58 CKG57NX7R2J474M( RoHS) C134 Capacitor, SMT, 0.47u, 630V,X7R, 20%, j-lead, MLCC...
Page 119 Continued from previous page NAPA34A Modulator/RF Amplifier PWBAssy, NX Series REFDES DESCRIPTION NAUTEL # VENDOR # OEM CODE CR19 Diode,Schottky,600V,10A,SIC QK50 CSD10060A(STATIC) CREE INC CR20 Diode,Schottky,600V,10A,SIC QK50 CSD10060A(STATIC) CREE INC CR21 Diode,Schottky,600V,10A,SIC QK50 CSD10060A(STATIC) CREE INC CR22 Not Used NOT USED...
Page 120 Continued from previous page NAPA34A Modulator/RF Amplifier PWBAssy, NX Series REFDES DESCRIPTION NAUTEL # VENDOR # OEM CODE Choke,SMT,Common Mode,2200 ohm,200mA,1206 LS22 DLW31SN222SQ2L(R 3EH09 OHS) Inductor Assy, 207-1053-03 207-1053-03 37338 Inductor Assy, 207-1053-03 207-1053-03 37338 Inductor Assy 207-1053-01 207-1053-01 37338...
Page 121 Continued from previous page NAPA34A Modulator/RF Amplifier PWBAssy, NX Series REFDES DESCRIPTION NAUTEL # VENDOR # OEM CODE R015 Resistor, SMT, MF, 221 Ohms,1% 1/4W RAD17 RK73H2BL2210F 59124 R016 Resistor, SMT, MF, 82.5 Ohms,1% 1/4W RAD12 RK73H2BL82R5F 59124 R017 Resistor, SMT, MF, 82.5 Ohms,1% 1/4W...
Page 122 Continued from previous page NAPA34A Modulator/RF Amplifier PWBAssy, NX Series REFDES DESCRIPTION NAUTEL # VENDOR # OEM CODE R051 Resistor, SMT, MF, 1.0M Ohms,1% 1/4W RAE13 RK73H2BL1004F 59124 R052 Resistor, SMT, MF, 1.0M Ohms,1% 1/4W RAE13 RK73H2BL1004F 59124 R053 Resistor, SMT, MF, 1.0M Ohms,1% 1/4W...
Page 123 Continued from previous page NAPA34A Modulator/RF Amplifier PWBAssy, NX Series REFDES DESCRIPTION NAUTEL # VENDOR # OEM CODE R088 Resistor,SMT,MF,10.0Kohms,1%,1/10W,0603 RFFS50 RK73H1JLTD1002F 59124 R089 Resistor,SMT,MF,10.0Kohms,1%,1/10W,0603 RFFS50 RK73H1JLTD1002F 59124 R090 Resistor,SMT,MF,10.0Kohms,1%,1/10W,0603 RFFS50 RK73H1JLTD1002F 59124 R091 Resistor, SMT, MF, 270 Ohms,1%, 1W 2512...
Page 124 Continued from previous page NAPA34A Modulator/RF Amplifier PWBAssy, NX Series REFDES DESCRIPTION NAUTEL # VENDOR # OEM CODE R123 Resistor, SMT, 0 Ohms, 1%, 1W2512 RAD85Z CR2512-1W-000T- SP(RoHS) R124 Resistor, SMT, MF, 4750 Ohms,1%, 1/4W RAD33 RK73H2BL4751F 59124 R125 Resistor, SMT, MF, 4750 Ohms,1%, 1/4W...
Page 125 Continued from previous page NAPA34A Modulator/RF Amplifier PWBAssy, NX Series REFDES DESCRIPTION NAUTEL # VENDOR # OEM CODE IC,SMT,RS-485 Transceiver,Sgl,SOIC-8 UDTS03 DS36C278TM(STATIC 27014 IC,SMT,Opamp,Quad,Rail-To-Rail,SOIC-14 ULAS02 TLV2374ID(STATIC) 01295 IC,SMT,Micro, ADC,PWM,TQFP-32,16k Flash UX95 ATMEGA 168- 1FN41 20AI(STATIC) IC, SMT, FET Driver, 14A, Non-inverting, TO-263...
Page 126 NAPC160B/01 Control/Interface PWB Assy, NXSeries REFDES DESCRIPTION NAUTEL # VENDOR # OEM CODE BT01 Battery, Lithium, 3V,20mm Coin Cell BBLT01 CR2032 PANAS C001 Cap, SMT, Ceramic, 0.1uF, 10%25V X7R, 0603 CCFS52 C0603C104K3RAC 31433 C002 Cap, SMT, Ceramic, 0.1uF, 10%25V X7R, 0603...
Page 127 Continued from previous page NAPC160B/01 Control/Interface PWB Assy, NXSeries REFDES DESCRIPTION NAUTEL # VENDOR # OEM CODE C038 Cap, SMT, Ceramic,47uF,20%,6.3V, 1210 CCFS53 C3225X5R0J476M(Ro 56289 C039 Cap, SMT, Ceramic, 0.1uF, 10%25V X7R, 0603 CCFS52 C0603C104K3RAC 31433 C040 Cap, SMT, Ceramic, 0.1uF, 10%25V X7R, 0603...
Page 128 Continued from previous page NAPC160B/01 Control/Interface PWB Assy, NXSeries REFDES DESCRIPTION NAUTEL # VENDOR # OEM CODE C076 Cap, SMT, Ceramic, 0.1uF, 10%25V X7R, 0603 CCFS52 C0603C104K3RAC 31433 C077 Cap, SMT, Ceramic, 0.1uF, 10%25V X7R, 0603 CCFS52 C0603C104K3RAC 31433 C078 Cap, SMT, Ceramic, 0.1uF, 10%25V X7R, 0603...
Page 129 Continued from previous page NAPC160B/01 Control/Interface PWB Assy, NXSeries REFDES DESCRIPTION NAUTEL # VENDOR # OEM CODE C115 Cap, SMT, Ceramic, 0.1uF, 10%25V X7R, 0603 CCFS52 C0603C104K3RAC 31433 C116 Cap,SMT,Ceramic,0.0047uF,10%,50V,X7R,0603 CCFS03 C0603C472K5RAC 31433 C117 Cap, SMT, Ceramic, 0.1uF, 10%25V X7R, 0603...
Page 130 Continued from previous page NAPC160B/01 Control/Interface PWB Assy, NXSeries REFDES DESCRIPTION NAUTEL # VENDOR # OEM CODE C154 Cap, SMT, Ceramic, 10uF, 10%,25V CCFS62 C3225X5R1E106K C155 Cap,SMT,Ceramic,18pF,2%,50V,C0G,0603 CCFS23 C0603C180G5GAC 31433 C156 Cap,SMT,Ceramic,0.01uF,10%,50V,X7R,0603 CCFS04 C0603C103K5RAC 31433 C157 Cap, SMT, Ceramic, 0.1uF, 10%25V X7R, 0603...
Page 131 Continued from previous page NAPC160B/01 Control/Interface PWB Assy, NXSeries REFDES DESCRIPTION NAUTEL # VENDOR # OEM CODE C193 Cap,SMT,Ceramic,0.01uF,10%,50V,X7R,0603 CCFS04 C0603C103K5RAC 31433 C194 Cap,SMT,Ceramic,0.01uF,10%,50V,X7R,0603 CCFS04 C0603C103K5RAC 31433 C195 Cap, SMT, Ceramic, 0.1uF, 10%25V X7R, 0603 CCFS52 C0603C104K3RAC 31433 C196 Cap,SMT,Ceramic,0.01uF,10%,50V,X7R,0603...
Page 132 Continued from previous page NAPC160B/01 Control/Interface PWB Assy, NXSeries REFDES DESCRIPTION NAUTEL # VENDOR # OEM CODE C232 Cap,SMT,Ceramic,0.01uF,10%,50V,X7R,0603 CCFS04 C0603C103K5RAC 31433 C233 Cap,SMT,Ceramic,0.01uF,10%,50V,X7R,0603 CCFS04 C0603C103K5RAC 31433 C234 Cap,SMT,Ceramic,0.01uF,10%,50V,X7R,0603 CCFS04 C0603C103K5RAC 31433 C235 Cap,SMT,Ceramic,0.01uF,10%,50V,X7R,0603 CCFS04 C0603C103K5RAC 31433 C236 Cap,SMT,Ceramic,0.01uF,10%,50V,X7R,0603 CCFS04...
Page 133 Continued from previous page NAPC160B/01 Control/Interface PWB Assy, NXSeries REFDES DESCRIPTION NAUTEL # VENDOR # OEM CODE C271 Cap, SMT, Ceramic, 0.1uF, 10%25V X7R, 0603 CCFS52 C0603C104K3RAC 31433 C272 Cap, SMT, Ceramic, 0.1uF, 10%25V X7R, 0603 CCFS52 C0603C104K3RAC 31433 C273 Cap, SMT, Ceramic, 0.1uF, 10%25V X7R, 0603...
Page 134 Continued from previous page NAPC160B/01 Control/Interface PWB Assy, NXSeries REFDES DESCRIPTION NAUTEL # VENDOR # OEM CODE CR26 Suppressor, Transient Voltage,SMT 60V Clamp QR70 0603ESDA- 71400 TR1(RoHS) CR27 Suppressor, Transient Voltage,SMT 60V Clamp QR70 0603ESDA- 71400 TR1(RoHS) CR28 Suppressor, Transient Voltage,SMT 60V Clamp...
Page 135 Continued from previous page NAPC160B/01 Control/Interface PWB Assy, NXSeries REFDES DESCRIPTION NAUTEL # VENDOR # OEM CODE CR60 Diode,SMT,Zener,39V,5%,3W,SMB QDZS04 1SMB5939BT3 04713 CR61 Diode,SMT,Switching,250V,0.2A,SOD-323 QDRS01 BAS21HT1(STATIC) 04713 CR62 Diode,SMT,Switching,250V,0.2A,SOD-323 QDRS01 BAS21HT1(STATIC) 04713 CR63 Diode,SMT,Switching,250V,0.2A,SOD-323 QDRS01 BAS21HT1(STATIC) 04713 CR64 Diode,SMT,Switching,250V,0.2A,SOD-323 QDRS01...
Page 136 Continued from previous page NAPC160B/01 Control/Interface PWB Assy, NXSeries REFDES DESCRIPTION NAUTEL # VENDOR # OEM CODE DS12 Diode, SMT, LED, Green,(560nm), 0603 QDLS01 597-5312- 83330 402F(STATIC)(RoHS) DS13 Diode, SMT, LED, Green,(560nm), 0603 QDLS01 597-5312- 83330 402F(STATIC)(RoHS) DS14 Diode, SMT, LED, Green,(560nm), 0603...
Page 137 Continued from previous page NAPC160B/01 Control/Interface PWB Assy, NXSeries REFDES DESCRIPTION NAUTEL # VENDOR # OEM CODE Conn, Header,Square Post,Gold,Dual,40-pin JF47 4-102973-0 09482 Conn, Modular Jack, RJ45, Shld, Side, PWB, 50u JM44 556591-1 09482 Inductor, Choke, 2.5 Turns, JMtl LA16...
Page 138 Continued from previous page NAPC160B/01 Control/Interface PWB Assy, NXSeries REFDES DESCRIPTION NAUTEL # VENDOR # OEM CODE R014 Resistor,SMT,MF,10.0Kohms,1%,1/10W,0603 RFFS50 RK73H1JLTD1002F 59124 R015 Resistor,SMT,MF,4750ohms,1%,1/10W,0603 RFFS46 RK73H1JLTD4751F 59124 R016 Resistor,SMT,MF,100ohms,1%,1/10W,0603 RFFS26 RK73H1JLTD1000F 59124 R017 Not Used NOT USED 37338 R018 Not Used...
Page 139 Continued from previous page NAPC160B/01 Control/Interface PWB Assy, NXSeries REFDES DESCRIPTION NAUTEL # VENDOR # OEM CODE R053 Resistor,SMT,MF,475ohms,1%,1/10W,0603 RFFS34 RK73H1JLTD4750F 59124 R054 Resistor,SMT,MF,475ohms,1%,1/10W,0603 RFFS34 RK73H1JLTD4750F 59124 R055 Resistor,SMT,MF,1000ohms,1%,1/10W,0603 RFFS38 RK73H1JLTD1001F 59124 R056 Resistor,SMT,MF,1.00Mohms,1%,1/10W,0603 RFFS74 RK73H1JLTD1004F 59124 R057 Resistor,SMT,MF,1.00Mohms,1%,1/10W,0603 RFFS74...
Page 140 Continued from previous page NAPC160B/01 Control/Interface PWB Assy, NXSeries REFDES DESCRIPTION NAUTEL # VENDOR # OEM CODE R092 Resistor,SMT,MF,1000ohms,1%,1/10W,0603 RFFS38 RK73H1JLTD1001F 59124 R093 Resistor,SMT,MF,4750ohms,1%,1/10W,0603 RFFS46 RK73H1JLTD4751F 59124 R094 Resistor,SMT,MF,10.0Kohms,1%,1/10W,0603 RFFS50 RK73H1JLTD1002F 59124 R095 Resistor,SMT,MF,100ohms,1%,1/10W,0603 RFFS26 RK73H1JLTD1000F 59124 R096 Resistor,SMT,MF,1000ohms,1%,1/10W,0603 RFFS38...
Page 141 Continued from previous page NAPC160B/01 Control/Interface PWB Assy, NXSeries REFDES DESCRIPTION NAUTEL # VENDOR # OEM CODE R130 Resistor,SMT,49.9 Ohms, 1% RT20 RK73H2ET49R9F 59124 R131 Resistor,SMT,49.9 Ohms, 1% RT20 RK73H2ET49R9F 59124 R132 Resistor,SMT,49.9 Ohms, 1% RT20 RK73H2ET49R9F 59124 R133 Resistor,SMT,49.9 Ohms, 1%...
Page 142 Continued from previous page NAPC160B/01 Control/Interface PWB Assy, NXSeries REFDES DESCRIPTION NAUTEL # VENDOR # OEM CODE R169 Resistor,SMT,MF,27.4Kohms,1%,1/10W,0603 RFFS55 RK73H1JLTD2742F 59124 R170 Resistor,SMT,MF,10.0Kohms,1%,1/10W,0603 RFFS50 RK73H1JLTD1002F 59124 R171 Resistor,SMT,MF,10.0Kohms,1%,1/10W,0603 RFFS50 RK73H1JLTD1002F 59124 R172 Resistor,SMT,MF,100ohms,1%,1/10W,0603 RFFS26 RK73H1JLTD1000F 59124 R173 Resistor,SMT,MF,10.0Kohms,1%,1/10W,0603 RFFS50...
Page 143 Continued from previous page NAPC160B/01 Control/Interface PWB Assy, NXSeries REFDES DESCRIPTION NAUTEL # VENDOR # OEM CODE R208 Resistor, SMT, MF, 1000 Ohms,1% 1/4W RAD25 RK73H2BL1001F 59124 R209 Resistor,SMT,MF,475ohms,1%,1/10W,0603 RFFS34 RK73H1JLTD4750F 59124 R210 Resistor,SMT,MF,10.0Kohms,1%,1/10W,0603 RFFS50 RK73H1JLTD1002F 59124 R211 Resistor,SMT,MF,274ohms,1%,1/10W,0603 RFFS31...
Page 144 Continued from previous page NAPC160B/01 Control/Interface PWB Assy, NXSeries REFDES DESCRIPTION NAUTEL # VENDOR # OEM CODE R247 Resistor,SMT,MF,10.0Kohms,1%,1/10W,0603 RFFS50 RK73H1JLTD1002F 59124 R248 Resistor,SMT,MF,10.0ohms,1%,1/10W,0603 RFFS14 RK73H1JLTD10R0F 59124 R249 Resistor,SMT,MF,10.0ohms,1%,1/10W,0603 RFFS14 RK73H1JLTD10R0F 59124 R250 Resistor,SMT,MF,1000ohms,1%,1/10W,0603 RFFS38 RK73H1JLTD1001F 59124 R251 Resistor,SMT,MF,10.0Kohms,1%,1/10W,0603 RFFS50...
Page 145 Continued from previous page NAPC160B/01 Control/Interface PWB Assy, NXSeries REFDES DESCRIPTION NAUTEL # VENDOR # OEM CODE R286 Resistor,SMT,MF,4750ohms,1%,1/10W,0603 RFFS46 RK73H1JLTD4751F 59124 R287 Resistor,SMT,MF,10.0Kohms,1%,1/10W,0603 RFFS50 RK73H1JLTD1002F 59124 R288 Resistor,SMT,MF,10.0Kohms,1%,1/10W,0603 RFFS50 RK73H1JLTD1002F 59124 R289 Resistor,SMT,MF,10.0Kohms,1%,1/10W,0603 RFFS50 RK73H1JLTD1002F 59124 R290 Resistor,SMT,MF,10.0Kohms,1%,1/10W,0603 RFFS50...
Page 146 Continued from previous page NAPC160B/01 Control/Interface PWB Assy, NXSeries REFDES DESCRIPTION NAUTEL # VENDOR # OEM CODE R325 Resistor, SMT, MF, 4750 Ohms,1%, 1/4W RAD33 RK73H2BL4751F 59124 R326 Resistor, SMT, MF, 4750 Ohms,1%, 1/4W RAD33 RK73H2BL4751F 59124 R327 Resistor, SMT, MF, 4750 Ohms,1%, 1/4W...
Page 147 Continued from previous page NAPC160B/01 Control/Interface PWB Assy, NXSeries REFDES DESCRIPTION NAUTEL # VENDOR # OEM CODE RT03 Thermistor, PTC, .50-.77 Ohms, 0.5A Hold RT16 RXE050 06090 RT04 Thermistor, PTC, .15-.25 Ohms, 1.1A Hold RT17 RXE110 06090 Switch, SMT, SPST, Momentary,w/ESD gnd...
Page 148 Continued from previous page NAPC160B/01 Control/Interface PWB Assy, NXSeries REFDES DESCRIPTION NAUTEL # VENDOR # OEM CODE TP20 Terminal, SMT, Test Point, PWB HAJ66 TP-107-02-1- T(RoHS) COMPONENTS CORP TP32 Terminal, SMT, Test Point, PWB HAJ66 TP-107-02-1- T(RoHS) COMPONENTS CORP TP36...
Page 149 Continued from previous page NAPC160B/01 Control/Interface PWB Assy, NXSeries REFDES DESCRIPTION NAUTEL # VENDOR # OEM CODE IC,SMT,Quad RS-422 DIFF LineDriver UD66 DS26C31T/DS26C31M NATIONAL (STATIC) IC,SMT,Quad RS-422 DIFF LineDriver UD66 DS26C31T/DS26C31M NATIONAL (STATIC) IC,SMT,Quad 2-input AND gate,SO-14 UD70 MC74ACT08D(STATIC ON SEMI...
Page 150 Continued from previous page NAPC160B/01 Control/Interface PWB Assy, NXSeries REFDES DESCRIPTION NAUTEL # VENDOR # OEM CODE IC,SMT,OP-AMP,Dual,CurrentFeedback,SO-8 UD71 OPA2691ID(STATIC) TEXAS IC,SMT,Dual Optocoupler,SOIC-8 UDOS01 MOCD223-M(STATIC) 7D893 IC,SMT,CMOS,Quad 2-Input NANDGate,SO-14 UDLS10 MM74HC00M(STATIC) 07263 IC, SMT, Voltage Regulator,-5V, DPAK UP70 MC79M05BDT(STATIC ON SEMI...
Page 151 Continued from previous page NAPC160B/01 Control/Interface PWB Assy, NXSeries REFDES DESCRIPTION NAUTEL # VENDOR # OEM CODE IC,SMT,CMOS,8-Bit Shft Reg,Par I/P, SOIC-16 UDLS04 MC74HC165AD(STATI 04713 IC,SMT,CMOS,Quad Tri-State Buffer, SOIC-14 UDLS06 MC74HC125AD(STATI 04713 IC,SMT,CMOS,8-Bit Shft Reg,Par I/P, SOIC-16 UDLS04 MC74HC165AD(STATI 04713...
Page 152 NAPE78A/01 Digital AM Exciter PWB Assy REFDES DESCRIPTION NAUTEL # VENDOR # OEM CODE C001 Cap,SMT,Ceramic,22pF,2%,50V,C0G,0603 CCFS24 C0603C220G5GAC 31433 C002 Cap,SMT,Ceramic,100pF,2%,50V,C0G,0603 CCFS32 C0603C101G5GAC 31433 C003 Cap,SMT,Ceramic,100pF,2%,50V,C0G,0603 CCFS32 C0603C101G5GAC 31433 C004 Cap,SMT,Ceramic,22pF,2%,50V,C0G,0603 CCFS24 C0603C220G5GAC 31433 C005 Not Used NOT USED 37338 C006 Cap,SMT,Ceramic,0.01uF,10%,50V,X7R,0603...
Page 153 Continued from previous page NAPE78A/01 Digital AM Exciter PWB Assy REFDES DESCRIPTION NAUTEL # VENDOR # OEM CODE C039 Cap, SMT, Ceramic,47uF,20%,6.3V, 1210 CCFS53 C3225X5R0J476M(Ro 56289 C040 Cap, SMT, Ceramic, 0.1uF, 10%25V X7R, 0603 CCFS52 C0603C104K3RAC 31433 C041 Cap,SMT,Ceramic,0.01uF,10%,50V,X7R,0603 CCFS04...
Page 154 Continued from previous page NAPE78A/01 Digital AM Exciter PWB Assy REFDES DESCRIPTION NAUTEL # VENDOR # OEM CODE C078 Cap, SMT, Ceramic, 0.1uF, 10%25V X7R, 0603 CCFS52 C0603C104K3RAC 31433 C079 Cap, SMT, Ceramic, 0.1uF, 10%25V X7R, 0603 CCFS52 C0603C104K3RAC 31433 C080 Cap,SMT,Ceramic,10uF,20%,6.3V,X5R,0805...
Page 155 Continued from previous page NAPE78A/01 Digital AM Exciter PWB Assy REFDES DESCRIPTION NAUTEL # VENDOR # OEM CODE C117 Cap, SMT, Ceramic, 0.1uF, 10%25V X7R, 0603 CCFS52 C0603C104K3RAC 31433 C118 Cap, SMT, Ceramic, 0.1uF, 10%25V X7R, 0603 CCFS52 C0603C104K3RAC 31433 C119 Cap, SMT, Ceramic, 0.1uF, 10%25V X7R, 0603...
Page 156 Continued from previous page NAPE78A/01 Digital AM Exciter PWB Assy REFDES DESCRIPTION NAUTEL # VENDOR # OEM CODE C156 Cap, SMT, Ceramic, 0.1uF, 10%25V X7R, 0603 CCFS52 C0603C104K3RAC 31433 C157 Cap, SMT, Ceramic, 0.1uF, 10%25V X7R, 0603 CCFS52 C0603C104K3RAC 31433 C158 Cap, SMT, Ceramic, 0.1uF, 10%25V X7R, 0603...
Page 157 Continued from previous page NAPE78A/01 Digital AM Exciter PWB Assy REFDES DESCRIPTION NAUTEL # VENDOR # OEM CODE C195 Cap, SMT, Ceramic, 0.1uF, 10%25V X7R, 0603 CCFS52 C0603C104K3RAC 31433 C196 Cap, SMT, Ceramic, 0.1uF, 10%25V X7R, 0603 CCFS52 C0603C104K3RAC 31433 C197 Cap, SMT, Ceramic, 0.1uF, 10%25V X7R, 0603...
Page 158 Continued from previous page NAPE78A/01 Digital AM Exciter PWB Assy REFDES DESCRIPTION NAUTEL # VENDOR # OEM CODE Conn, Header,Square Post,Gold,Dual,40-pin JF47 4-102973-0 09482 Inductor,SMT,390nH,375mA,2520 LS21 NLV25T-R39J- PF(ROHS) Inductor,SMT,560nH,325mA,2520 LS20 NLV25T-R56J- PF(ROHS) Inductor,SMT,390nH,375mA,2520 LS21 NLV25T-R39J- PF(ROHS) Inductor,SMT,390nH,375mA,2520 LS21 NLV25T-R39J- PF(ROHS)
Page 159 Continued from previous page NAPE78A/01 Digital AM Exciter PWB Assy REFDES DESCRIPTION NAUTEL # VENDOR # OEM CODE Resistor,SMT,MF,1.00ohms,1%,1/10W,0603 RFFS02 RK73H1JLTD1R00F 59124 Resistor,SMT,MF,49.9R,1%,1/10W0603 RAE34 RK73H1JT49R9F 59124 Resistor,SMT,MF,22.1ohms,1%,1/10W,0603 RFFS18 RK73H1JLTD22R1F 59124 Resistor,SMT,MF,49.9R,1%,1/10W0603 RAE34 RK73H1JT49R9F 59124 Resistor,SMT,MF,22.1ohms,1%,1/10W,0603 RFFS18 RK73H1JLTD22R1F 59124 Resistor,SMT,MF,10.0ohms,1%,1/10W,0603 RFFS14...
Page 160 Continued from previous page NAPE78A/01 Digital AM Exciter PWB Assy REFDES DESCRIPTION NAUTEL # VENDOR # OEM CODE Resistor,SMT,MF,10.0Kohms,1%,1/10W,0603 RFFS50 RK73H1JLTD1002F 59124 Resistor,SMT,MF,10.0Kohms,1%,1/10W,0603 RFFS50 RK73H1JLTD1002F 59124 Resistor,SMT,MF,10.0Kohms,1%,1/10W,0603 RFFS50 RK73H1JLTD1002F 59124 Resistor,SMT,MF,10.0Kohms,1%,1/10W,0603 RFFS50 RK73H1JLTD1002F 59124 Resistor,SMT,MF,10.0Kohms,1%,1/10W,0603 RFFS50 RK73H1JLTD1002F 59124 Resistor,SMT,MF,10.0Kohms,1%,1/10W,0603 RFFS50...
Page 161 Continued from previous page NAPE78A/01 Digital AM Exciter PWB Assy REFDES DESCRIPTION NAUTEL # VENDOR # OEM CODE Resistor,SMT,MF,10.0Kohms,1%,1/10W,0603 RFFS50 RK73H1JLTD1002F 59124 Switch,SMt,Mom.,1PSTNO SA60 KSC321G ITT INDUS Transformer, SMT,4:1,0.03 to 125MHz TZ93 ADT4-6T Transformer,SMT,50 ohms,0.03to 125MHz TZ88 ADT1-6T+(ROHS) MINI-CIRC Transformer,SMT,50 ohms,0.03to 125MHz...
Page 162 Continued from previous page NAPE78A/01 Digital AM Exciter PWB Assy REFDES DESCRIPTION NAUTEL # VENDOR # OEM CODE IC,SMT,Linear Regulator,3A Adj,Q-5 DD UX67 LT1764AEQ(STATIC) 64155 IC,SMT,CMOS,Phase Locked Loop,SO-16 UDLS08 ADF4116BRUZ(static) 27014 IC,SMT,Quad 2 TO 1 DATA Sel/Mux 3 States UW90...
Page 163 Continued from previous page NAPE78A/01 Digital AM Exciter PWB Assy REFDES DESCRIPTION NAUTEL # VENDOR # OEM CODE IC,SMT,RS-232 Transceiver,3.3V,SO-16 UDTS05 ADM3202ARN(STATIC 45496 IC,SMT,Stereo ADC,24bit,96kHz,TSSOP-28 UP95 AD1871YRS(STATIC) 45496 IC,SMT,SPI UART,3.3V UW91 SC16IS740IPW(STATI C)(ROHS) IC,SMT,Voltage Regulator,5V,1A, D2PAK UT93 L7805ABD2T- ST MICRO...
Page 164 NAPI106 Remote Interface PWB Assy REFDES DESCRIPTION NAUTEL # VENDOR # OEM CODE Cap,SMT,Ceramic,1uF,10%,25V,,X7R,1206 CCFS10 C1206C105K3RAC 31433 CR01 Diode,SMT,Switching,250V,0.2A,SOD-323 QDRS01 BAS21HT1(STATIC) 04713 CR02 Diode,SMT,Switching,250V,0.2A,SOD-323 QDRS01 BAS21HT1(STATIC) 04713 CR03 Diode,SMT,Switching,250V,0.2A,SOD-323 QDRS01 BAS21HT1(STATIC) 04713 CR04 Diode,SMT,Switching,250V,0.2A,SOD-323 QDRS01 BAS21HT1(STATIC) 04713 CR05 Diode,SMT,Switching,250V,0.2A,SOD-323 QDRS01...
Page 165 Continued from previous page NAPI106 Remote Interface PWB Assy REFDES DESCRIPTION NAUTEL # VENDOR # OEM CODE DS16 Diode,SMT,LED,Bicolor,Red/Green,1210 QDLS04 597-7701- 83330 507(STATIC) Conn, Post Shunt, 2 Pos, .10 Centreline JQ15 390088-2 09482 Conn, Post Shunt, 2 Pos, .10 Centreline...
Page 166 Continued from previous page NAPI106 Remote Interface PWB Assy REFDES DESCRIPTION NAUTEL # VENDOR # OEM CODE Resistor, SMT, MF, 1500 Ohms,1% 1/4W RAD27 RK73H2BL1501F 59124 Resistor, SMT, MF, 1500 Ohms,1% 1/4W RAD27 RK73H2BL1501F 59124 Resistor, SMT, MF, 1500 Ohms,1% 1/4W...
Page 167 NAPI152A Rack Interface PWB Assy REFDES DESCRIPTION NAUTEL # VENDOR # OEM CODE C001 Cap, SMT, Ceramic, 0.1uF, 10%25V X7R, 0603 CCFS52 C0603C104K3RAC 31433 C002 Cap,SMT,Ceramic,1uF,10%,100V,X7R,1210 CCFS60 12101C105KAT2A(RO AVX CORP C003 Cap,SMT,Ceramic,0.001uF,10%,50V,X7R,0603 CCFS01 C0603C102K5RAC 31433 C004 Cap,SMT,Ceramic,1uF,10%,100V,X7R,1210 CCFS60 12101C105KAT2A(RO AVX CORP C005 Cap, SMT, Ceramic, 0.1uF, 10%25V X7R, 0603...
Page 168 Continued from previous page NAPI152A Rack Interface PWB Assy REFDES DESCRIPTION NAUTEL # VENDOR # OEM CODE C037 Cap,SMT,Tantalum,10uF,10%,35V,2917 CTFS03 T494D106K035AS 31433 C038 Cap, SMT, Ceramic, 0.1uF, 10%25V X7R, 0603 CCFS52 C0603C104K3RAC 31433 C039 Cap, SMT, Ceramic, 0.1uF, 10%25V X7R, 0603...
Page 169 Continued from previous page NAPI152A Rack Interface PWB Assy REFDES DESCRIPTION NAUTEL # VENDOR # OEM CODE C074 Cap, SMT, Ceramic, 0.1uF, 10%25V X7R, 0603 CCFS52 C0603C104K3RAC 31433 C075 Cap,SMT,Ceramic,1uF,10%,100V,X7R,1210 CCFS60 12101C105KAT2A(RO AVX CORP C076 Cap, SMT, Ceramic, 0.1uF, 10%25V X7R, 0603...
Page 170 Continued from previous page NAPI152A Rack Interface PWB Assy REFDES DESCRIPTION NAUTEL # VENDOR # OEM CODE C110 Cap, SMT, Ceramic, 0.1uF, 10%25V X7R, 0603 CCFS52 C0603C104K3RAC 31433 C111 Cap, SMT, Ceramic, 0.1uF, 10%25V X7R, 0603 CCFS52 C0603C104K3RAC 31433 C112 Cap, SMT, Ceramic, 0.1uF, 10%25V X7R, 0603...
Page 171 Continued from previous page NAPI152A Rack Interface PWB Assy REFDES DESCRIPTION NAUTEL # VENDOR # OEM CODE C146 Cap,SMT,Tantalum,10uF,10%,35V,2917 CTFS03 T494D106K035AS 31433 C147 Cap, SMT, Ceramic, 0.1uF, 10%25V X7R, 0603 CCFS52 C0603C104K3RAC 31433 C148 Cap, SMT, Ceramic, 0.1uF, 10%25V X7R, 0603...
Page 172 Continued from previous page NAPI152A Rack Interface PWB Assy REFDES DESCRIPTION NAUTEL # VENDOR # OEM CODE C184 Cap,SMT,Ceramic,0.47uF,10%,25V,X7R,0805 CCFS09 C0805C474K3RAC 31433 C185 Cap,SMT,Ceramic,0.047uF,10%,50V,X7R,0603 CCFS06 C0603C473K5RAC 31433 C186 Not Used NOT USED 37338 C187 Not Used NOT USED 37338 C188...
Page 173 Continued from previous page NAPI152A Rack Interface PWB Assy REFDES DESCRIPTION NAUTEL # VENDOR # OEM CODE CR01 Diode,SMT,Switching,250V,0.2A,SOD-323 QDRS01 BAS21HT1(STATIC) 04713 CR02 Diode,SMT,Switching,250V,0.2A,SOD-323 QDRS01 BAS21HT1(STATIC) 04713 CR03 Diode, Schottky Rectifier, 60V, 16A QM60 MBR1660 (RoHS) CR04 Diode, Schottky Rectifier, 60V, 16A...
Page 174 Continued from previous page NAPI152A Rack Interface PWB Assy REFDES DESCRIPTION NAUTEL # VENDOR # OEM CODE Conn, Socket, D-Sub, 9 pin, PWB Mt JQ34 K22-E9S-NJ KYCON Conn, Socket, D-Sub, 9 pin, PWB Mt JQ34 K22-E9S-NJ KYCON Conn, Plug, D-Sub, 25 pin, PWB Mt...
Page 175 Continued from previous page NAPI152A Rack Interface PWB Assy REFDES DESCRIPTION NAUTEL # VENDOR # OEM CODE R023 Resistor,SMT,MF,10.0Kohms,1%,1/10W,0603 RFFS50 RK73H1JLTD1002F 59124 R024 Resistor,SMT,MF,15.0Kohms,1%,1/10W,0603 RFFS52 RK73H1JLTD1502F 59124 R025 Not Used NOT USED 37338 R026 Resistor,SMT,MF,10.0Kohms,1%,1/10W,0603 RFFS50 RK73H1JLTD1002F 59124 R027 Not Used...
Page 176 Continued from previous page NAPI152A Rack Interface PWB Assy REFDES DESCRIPTION NAUTEL # VENDOR # OEM CODE R062 Resistor,SMT,MF,10.0Kohms,1%,1/10W,0603 RFFS50 RK73H1JLTD1002F 59124 R063 Resistor,SMT,MF,0.0ohms,Jumper,0603 RFFS01 RK73Z1JLTD 59124 R064 Resistor,SMT,MF,475Kohms,1%,1/10W,0603 RFFS70 RK73H1JLTD4753F 59124 R065 Resistor, SMT, MF, 1000 Ohms,1% 1/4W RAD25...
Page 177 Continued from previous page NAPI152A Rack Interface PWB Assy REFDES DESCRIPTION NAUTEL # VENDOR # OEM CODE R101 Resistor,SMT,MF,10.0Kohms,1%,1/10W,0603 RFFS50 RK73H1JLTD1002F 59124 R102 Resistor,SMT,MF,10.0ohms,1%,1/10W,0603 RFFS14 RK73H1JLTD10R0F 59124 R103 Not Used NOT USED 37338 R104 Resistor,SMT,MF,3320ohms,1%,1/10W,0603 RFFS44 RK73H1JLTD3321F 59124 R105 Resistor,SMT,MF,475Kohms,1%,1/10W,0603...
Page 178 Continued from previous page NAPI152A Rack Interface PWB Assy REFDES DESCRIPTION NAUTEL # VENDOR # OEM CODE R140 Resistor,SMT,MF,47.5Kohms,1%,1/10W,0603 RFFS58 RK73H1JLTD4752F 59124 R141 Resistor,SMT,MF,47.5Kohms,1%,1/10W,0603 RFFS58 RK73H1JLTD4752F 59124 R142 Resistor,SMT,MF,475Kohms,1%,1/10W,0603 RFFS70 RK73H1JLTD4753F 59124 R143 Resistor,SMT,MF,475Kohms,1%,1/10W,0603 RFFS70 RK73H1JLTD4753F 59124 R144 Resistor,SMT,MF,100Kohms,1%,1/10W,0603 RFFS62...
Page 179 Continued from previous page NAPI152A Rack Interface PWB Assy REFDES DESCRIPTION NAUTEL # VENDOR # OEM CODE R179 Resistor,SMT,MF,4750ohms,1%,1/10W,0603 RFFS46 RK73H1JLTD4751F 59124 R180 Resistor,SMT,MF,100ohms,1%,1/10W,0603 RFFS26 RK73H1JLTD1000F 59124 R181 Resistor,SMT,MF,100ohms,1%,1/10W,0603 RFFS26 RK73H1JLTD1000F 59124 R182 Resistor,SMT,MF,4750ohms,1%,1/10W,0603 RFFS46 RK73H1JLTD4751F 59124 R183 Not Used...
Page 180 Continued from previous page NAPI152A Rack Interface PWB Assy REFDES DESCRIPTION NAUTEL # VENDOR # OEM CODE R216 Not Used NOT USED 37338 R217 Not Used NOT USED 37338 R218 Resistor, SMT, 3.9 Ohms, 1%, 1W, 2512 RAD58 ERJ-1TRQF3R9U R219...
Page 181 Continued from previous page NAPI152A Rack Interface PWB Assy REFDES DESCRIPTION NAUTEL # VENDOR # OEM CODE R253 Resistor, SMT, 3.9 Ohms, 1%, 1W, 2512 RAD58 ERJ-1TRQF3R9U R254 Not Used NOT USED 37338 R255 Not Used NOT USED 37338 R256...
Page 182 Continued from previous page NAPI152A Rack Interface PWB Assy REFDES DESCRIPTION NAUTEL # VENDOR # OEM CODE Signal Transformer, 1.1VA230V/36V TD46 DST-2-36 08779 TP07 Terminal, SMT, Test Point, PWB HAJ66 TP-107-02-1- T(RoHS) COMPONENTS CORP TP15 Terminal, SMT, Test Point, PWB...
Page 183 Continued from previous page NAPI152A Rack Interface PWB Assy REFDES DESCRIPTION NAUTEL # VENDOR # OEM CODE IC, SMT, SRAM, 32Kx8, SOIC-28(Wide) UDMS01 CY62256NLL- 65786 55SNXI(STATIC)(RoH IC,DC-DC Converter,OUT +/-15V@0.5A,15W, IN 9-36V UT101 AEE00CC18-L ASTEC (STATIC) IC,SMT,ADC,10-Bit,11-ch,SPI,SOIC-20 UMAS01 TLC1543IDW(STATIC) 01295 IC,SMT,Opamp,Quad,Single Supply,SOIC-14...
Page 184 NAPI154 PDM Drive Distribution PWB REFDES DESCRIPTION NAUTEL # VENDOR # OEM CODE C001 Cap,SMT,Ceramic,0.1uF,10%,50V,X7R,0805 CCFS07 C0805C104K5RAC 31433 C002 Cap,SMT,Ceramic,0.1uF,10%,50V,X7R,0805 CCFS07 C0805C104K5RAC 31433 C003 Cap,SMT,Ceramic,0.1uF,10%,50V,X7R,0805 CCFS07 C0805C104K5RAC 31433 C004 Cap,SMT,Ceramic,0.1uF,10%,50V,X7R,0805 CCFS07 C0805C104K5RAC 31433 C005 Cap,SMT,Ceramic,0.1uF,10%,50V,X7R,0805 CCFS07 C0805C104K5RAC 31433 C006 Cap,SMT,Ceramic,0.1uF,10%,50V,X7R,0805...
Page 185 Continued from previous page NAPI154 PDM Drive Distribution PWB REFDES DESCRIPTION NAUTEL # VENDOR # OEM CODE C040 Cap,SMT,Ceramic,0.1uF,10%,50V,X7R,0805 CCFS07 C0805C104K5RAC 31433 C041 Cap,SMT,Ceramic,1uF,10%,25V,,X7R,1206 CCFS10 C1206C105K3RAC 31433 C042 Cap,SMT,Ceramic,0.1uF,10%,50V,X7R,0805 CCFS07 C0805C104K5RAC 31433 C043 Cap,SMT,Ceramic,1uF,10%,25V,,X7R,1206 CCFS10 C1206C105K3RAC 31433 C044 Cap,SMT,Ceramic,0.1uF,10%,50V,X7R,0805 CCFS07...
Page 186 Continued from previous page NAPI154 PDM Drive Distribution PWB REFDES DESCRIPTION NAUTEL # VENDOR # OEM CODE C079 Cap,SMT,Ceramic,1uF,10%,25V,,X7R,1206 CCFS10 C1206C105K3RAC 31433 C080 Cap,SMT,Ceramic,0.1uF,10%,50V,X7R,0805 CCFS07 C0805C104K5RAC 31433 C081 Cap,SMT,Ceramic,1uF,10%,25V,,X7R,1206 CCFS10 C1206C105K3RAC 31433 C082 Cap,SMT,Ceramic,0.1uF,10%,50V,X7R,0805 CCFS07 C0805C104K5RAC 31433 C083 Cap,SMT,Ceramic,1uF,10%,25V,,X7R,1206 CCFS10...
Page 187 Continued from previous page NAPI154 PDM Drive Distribution PWB REFDES DESCRIPTION NAUTEL # VENDOR # OEM CODE Choke,SMT,Common Mode,2200 ohm,200mA,1206 LS22 DLW31SN222SQ2L(R 3EH09 OHS) Choke,SMT,Common Mode,2200 ohm,200mA,1206 LS22 DLW31SN222SQ2L(R 3EH09 OHS) Choke,SMT,Common Mode,2200 ohm,200mA,1206 LS22 DLW31SN222SQ2L(R 3EH09 OHS) Choke,SMT,Common Mode,2200 ohm,200mA,1206...
Page 188 Continued from previous page NAPI154 PDM Drive Distribution PWB REFDES DESCRIPTION NAUTEL # VENDOR # OEM CODE Resistor,SMT,MF,475ohms,1%,1/10W,0603 RFFS34 RK73H1JLTD4750F 59124 Resistor,SMT,MF,475ohms,1%,1/10W,0603 RFFS34 RK73H1JLTD4750F 59124 Not Used NOT USED 37338 Resistor,SMT,MF,475ohms,1%,1/10W,0603 RFFS34 RK73H1JLTD4750F 59124 Resistor,SMT,MF,475ohms,1%,1/10W,0603 RFFS34 RK73H1JLTD4750F 59124 Resistor,SMT,MF,475ohms,1%,1/10W,0603 RFFS34...
Page 189 Continued from previous page NAPI154 PDM Drive Distribution PWB REFDES DESCRIPTION NAUTEL # VENDOR # OEM CODE Not Used NOT USED 37338 Not Used NOT USED 37338 Resistor,SMT,MF,475ohms,1%,1/10W,0603 RFFS34 RK73H1JLTD4750F 59124 Resistor,SMT,MF,475ohms,1%,1/10W,0603 RFFS34 RK73H1JLTD4750F 59124 Not Used NOT USED 37338...
Page 190 Continued from previous page NAPI154 PDM Drive Distribution PWB REFDES DESCRIPTION NAUTEL # VENDOR # OEM CODE IC,SMT,Quad RS-422 DIFF LineDriver UD66 DS26C31T/DS26C31M NATIONAL (STATIC) IC,SMT,Quad RS-422 DIFF LineDriver UD66 DS26C31T/DS26C31M NATIONAL (STATIC) IC,SMT,Quad RS-422 DIFF LineDriver UD66 DS26C31T/DS26C31M NATIONAL...
Page 191 Continued from previous page NAPI154 PDM Drive Distribution PWB REFDES DESCRIPTION NAUTEL # VENDOR # OEM CODE IC,SMT,Quad RS-422 DIFF LineDriver UD66 DS26C31T/DS26C31M NATIONAL (STATIC) IC,SMT,Quad RS-422 DIFF LineDriver UD66 DS26C31T/DS26C31M NATIONAL (STATIC) IC,SMT,Quad RS-422 DIFF LineDriver UD66 DS26C31T/DS26C31M NATIONAL...
Page 192 NAPI95A/02 Power Module Interface PWB REFDES DESCRIPTION NAUTEL # VENDOR # OEM CODE Capacitor, Electrolytic, 470uF450V CBP15 381LR471M450A052 14655 CORNELL Not Used NOT USED 37338 Capacitor, Electrolytic, 470uF450V CBP15 381LR471M450A052 14655 CORNELL Not Used NOT USED 37338 Capacitor, Elect, 1000uF 50V...
Page 193 Continued from previous page NAPI95A/02 Power Module Interface PWB REFDES DESCRIPTION NAUTEL # VENDOR # OEM CODE MTA, Keyed Square Post HeaderAssy, 4 pin JU25 647123-4 00779 Not Used NOT USED 37338 MTA, Keyed Square Post HeaderAssy, 4 pin JU25...
Page 194 NAPI98 RF Drive Distribution PWB Assy REFDES DESCRIPTION NAUTEL # VENDOR # OEM CODE C001 Cap,SMT,Ceramic,0.1uF,10%,50V,X7R,0805 CCFS07 C0805C104K5RAC 31433 C002 Cap,SMT,Ceramic,0.1uF,10%,50V,X7R,0805 CCFS07 C0805C104K5RAC 31433 C003 Cap,SMT,Ceramic,0.1uF,10%,50V,X7R,0805 CCFS07 C0805C104K5RAC 31433 C004 Cap,SMT,Ceramic,0.1uF,10%,50V,X7R,0805 CCFS07 C0805C104K5RAC 31433 C005 Cap,SMT,Ceramic,0.1uF,10%,50V,X7R,0805 CCFS07 C0805C104K5RAC 31433 C006 Cap,SMT,Ceramic,0.1uF,10%,50V,X7R,0805...
Page 195 Continued from previous page NAPI98 RF Drive Distribution PWB Assy REFDES DESCRIPTION NAUTEL # VENDOR # OEM CODE C040 Cap,SMT,Ceramic,1uF,10%,25V,,X7R,1206 CCFS10 C1206C105K3RAC 31433 C041 Cap,SMT,Ceramic,1uF,10%,25V,,X7R,1206 CCFS10 C1206C105K3RAC 31433 C042 Cap,SMT,Ceramic,1uF,10%,25V,,X7R,1206 CCFS10 C1206C105K3RAC 31433 C043 Cap,SMT,Ceramic,1uF,10%,25V,,X7R,1206 CCFS10 C1206C105K3RAC 31433 C044 Cap,SMT,Ceramic,1uF,10%,25V,,X7R,1206...
Page 196 Continued from previous page NAPI98 RF Drive Distribution PWB Assy REFDES DESCRIPTION NAUTEL # VENDOR # OEM CODE C079 Cap,SMT,Ceramic,0.1uF,10%,50V,X7R,0805 CCFS07 C0805C104K5RAC 31433 C080 Cap,SMT,Ceramic,0.1uF,10%,50V,X7R,0805 CCFS07 C0805C104K5RAC 31433 C081 Cap,SMT,Ceramic,0.1uF,10%,50V,X7R,0805 CCFS07 C0805C104K5RAC 31433 C082 Cap,SMT,Ceramic,0.1uF,10%,50V,X7R,0805 CCFS07 C0805C104K5RAC 31433 C083 Cap,SMT,Ceramic,0.1uF,10%,50V,X7R,0805...
Page 197 Continued from previous page NAPI98 RF Drive Distribution PWB Assy REFDES DESCRIPTION NAUTEL # VENDOR # OEM CODE Resistor, SMT, MF, 82.5 Ohms,1% 1/4W RAD12 RK73H2BL82R5F 59124 Resistor,SMT,MF,0.0ohms,Jumper,0603 RFFS01 RK73Z1JLTD 59124 Resistor, SMT, MF, 82.5 Ohms,1% 1/4W RAD12 RK73H2BL82R5F 59124...
Page 198 Continued from previous page NAPI98 RF Drive Distribution PWB Assy REFDES DESCRIPTION NAUTEL # VENDOR # OEM CODE IC,SMT,Quad RS-422 DIFF LineDriver UD66 DS26C31T/DS26C31M NATIONAL (STATIC) IC,SMT,Quad RS-422 DIFF LineDriver UD66 DS26C31T/DS26C31M NATIONAL (STATIC) IC,SMT,Quad RS-422 DIFF LineDriver UD66 DS26C31T/DS26C31M...
Page 199 NAPP10/02 Directional Coupler PWB Assy,NX15/NX25 REFDES DESCRIPTION NAUTEL # VENDOR # OEM CODE Capacitor, Mica, Dipped, 9100pF 2% 500V CB06 CM07FD912G03 14655 Capacitor, Mica, Dipped, 9100pF 2% 500V CB06 CM07FD912G03 14655 Capacitor, Mica, Dipped, 9100pF 2% 500V CB06 CM07FD912G03 14655...
Page 200 Continued from previous page NAPP10/02 Directional Coupler PWB Assy,NX15/NX25 REFDES DESCRIPTION NAUTEL # VENDOR # OEM CODE Resistor, Film, 100 Ohms, 5%2W RBP07 GS-3, 100 OHMS 75042 Resistor, Film, 220 Ohms, 5%,2W RK31 GS-3, 220 OHMS 75042 Resistor, Film, 330 Ohms, 2PC1/2W...
Page 201 NARA59C Final Assy, NX15/NX25 (RLS 5) REFDES DESCRIPTION NAUTEL # VENDOR # OEM CODE Back Plane, RF Combiner - (<-- TOP) NAH60A 207-6060-01 37338 Back Plane, RF Combiner - (<-- TOP) NAH60A 207-6060-01 37338 Back Plane, RF Combiner - (<-- TOP)
Page 202 Continued from previous page NARA59C Final Assy, NX15/NX25 (RLS 5) REFDES DESCRIPTION NAUTEL # VENDOR # OEM CODE Control Door Assy-NX Series 207-2010-06 207-2010-06 37338 Voltage Probe Assy, NX15/ NX25 207-6111 207-6111 37338 Current Probe-NX25, 50,100,200 207-6213-04 207-6213-04 37338 Directional Coupler (FWD/REFLPWR) for NX15/NX25...
Page 203 Continued from previous page NARA59C Final Assy, NX15/NX25 (RLS 5) REFDES DESCRIPTION NAUTEL # VENDOR # OEM CODE See Master Work Order * SEE MASTER 37338 WORK ORDER See Master Work Order * SEE MASTER 37338 WORK ORDER See Master Work Order...
Page 204 NAX243A B+ Distribution Assy REFDES DESCRIPTION NAUTEL # VENDOR # OEM CODE Fuse, 70A, 600V, Class J, OpenIndicator FD24 AJT70 3WCG0 Fuse, 70A, 600V, Class J, OpenIndicator FD24 AJT70 3WCG0 Fuse, 70A, 600V, Class J, OpenIndicator FD24 AJT70 3WCG0 Fuse, 70A, 600V, Class J, OpenIndicator...
Page 205: Wiring/Connector Lists
NX25/NX15 Troubleshooting Manual Wiring/connector lists Section 4: Wiring/connector lists This section contains the wiring information for the hard-wired assemblies of the transmitter, and applicable connector mating information. Wiring lists provided Wiring lists are provided in tabular format. Table 4.1 on page 4-2 lists the tables containing wiring information.
Page 206 Table 4.1: Wiring Lists Provided Table # Description Table 4.3 NX25/NX15 Transmitter - Wiring List (page 4-2) Fan Tray Assembly (Nautel Part Number: 207-8133) - Wiring List Table 4.5 (page 4-11) Table 4.2: Connector Mating Information Provided Table # Description NX25/NX15 Transmitter - Connector Mating Information ( Table 4.4...
Page 207 NX25/NX15 Troubleshooting Manual Wiring/connector lists Table 4.3: NX25 Transmitter - Wiring List Source Destination Wire # Color Size Remarks A46U8-(AC1) A46C1-(+) White A46U8-(AC2) A46C2-(+) White A46U9-(AC1) A46C3-(+) White A46U8-(+) A46K1-1 White A46U9-(+) A46K1-1 White A46R7-2 A46K1-2 Yellow P01-01 P06-01 White...
Page 208 NX25/NX15 Troubleshooting Manual Wiring/connector lists Table 4.3: NX25 Transmitter - Wiring List Source Destination Wire # Color Size Remarks P08-02 P14-02 White P08-03 P14-03 White P08-04 P14-04 Black P08-05 P14-05 White P08-06 P14-06 White P08-07 P14-07 Black P08-08 P14-08 White...
Page 209 NX25/NX15 Troubleshooting Manual Wiring/connector lists Table 4.3: NX25 Transmitter - Wiring List Source Destination Wire # Color Size Remarks P09-21 P16-03 White P09-23 P16-02 White P09-24 A48U1TB3-8 Black P10-01 P15-01 White P10-05 P15-05 White P10-06 P15-06 Black P11-01 U5-(V-) Black...
Page 210 NX25/NX15 Troubleshooting Manual Wiring/connector lists Table 4.3: NX25 Transmitter - Wiring List Source Destination Wire # Color Size Remarks P17-06 P27-08 Shield T1XF1-2 White XF12, COM Fuse (L) T1XF1-4 White XF14, LINE Fuse (R) U3-L T1XF1-2 White U3-N T1XF1-4 White...
Page 211 NX25/NX15 Troubleshooting Manual Wiring/connector lists Table 4.3: NX25 Transmitter - Wiring List Source Destination Wire # Color Size Remarks Line 2-2 P35-2 Brown Line 3-2 P35-3 Gray GND Near A48 P35-4 Grn/Ylw W65P1-(+) E1-B Blk/Ws W65P1-(-) E2-B Black W61P1 W61P2...
Page 212 NX25/NX15 Troubleshooting Manual Wiring/connector lists Table 4.3: NX25 Transmitter - Wiring List Source Destination Wire # Color Size Remarks T1-LINE2 Line 2-2 Black T1-LINE3 Line 3-2 Black Page 4-8 Issue 5.0 2016-05-06...
Page 213 NX25/NX15 Troubleshooting Manual Wiring/connector lists Table 4.4: NX25 Transmitter - Connector Mating Information Connector Mate Note A41E1 C1E1 Voltage Probe A6E1 A6E2 A35J1 A36J1 A37J1 A38J1 A39J1 A6J8 A6J9 A6J11 A6J12 A6J14 A6J15 A6J6 A6J7 A11A1J1 A8J9 U2J1 A11A1J3B A47U1J1...
Page 214 NX25/NX15 Troubleshooting Manual Wiring/connector lists Table 4.4: NX25 Transmitter - Connector Mating Information Connector Mate Note W4P1 A16A1J1 W4P2 A8J2D W6P1 A17A1J1 W6P2 A8J3D W8P1 A18A1J1 W8P2 A8J4D W10P1 A19A1J1) W10P2 A8J5D W12P1 A20A1J1 W12P2 A8J1G W14P1 A21A1J1 W14P2 A8J2G...
Page 215 A11A1J3A W67P2 A40A1U1COM1 W69P1 A6J1 W69P2 A1A1J6 W70P1 A6J5 W70P2 A5A1J6 Table 4.5: Fan Tray Assembly (Nautel Part Number: 207-8139) - Wiring List Source Destination Wire # Color Size Remarks J1-01 Cut wire 3" (V+) J1-02 Black Cut wire 3" (V-)
Page 216 NX25/NX15 Troubleshooting Manual Wiring/connector lists Page 4-12 Issue 5.0 2016-05-06...
Page 217: Reading Electrical Schematics
• Capacitor values are shown in microfarads (uF) • Unidentified diodes are part number 1N4938 (Nautel Part # QAP29) Graphic symbols The graphic symbols used on electrical schematics are in accordance with American National Standard ANSI Y32.2-1975 - Graphic Symbols for Electrical and Electronic Diagrams.
Page 218: Unique Symbols
NX25/NX15 Troubleshooting Manual Reading Electrical Schematics Unique symbols Nautel uses unique symbols on electrical schematics to describe logic (two-state) signals. These signals differ from single-state signals or analog signals that may have multiple values. Type of inputs and outputs On electrical schematics, names used to describe logic (two-state) input and output signals are prefixed with a # symbol.
Page 219: Locating Schematic Diagram(S) For A Functional Block
3-1. Follow the family tree branches to the block that contains the desired reference designation, and associated Nautel nomenclature (e.g., NAPA34A Modulator/Power Amplifier PWB ). Note the reference designations and Nautel nomenclatures of all higher assemblies in the path. Example: A15 NAP39A RF Power Module > A15A1 NAPA34A Modulator/Power Amplifier PWB .
Page 220 2. Follow the family tree branches to the block that contains the desired reference designation, while noting the Nautel nomenclatures and names of all higher assemblies in the path. Example: A15 NAP39A RF Power Module > A15A1 NAPA34A Modulator/Power Amplifier PWB .
Page 221 NX25/NX15 Transmitter - Exciter Stage SD-3 NX25/NX15 Transmitter - Control/Monitor Stage SD-4 NX25/NX15 Transmitter - RF Power Stage (Sheet 1 of 2) SD-5 NX25/NX15 Transmitter - RF Power Stage (Sheet 2 of 2) SD-6 NX25/NX15 Transmitter - 5 kW RF Power Block...
Page 222 NX25/NX15 Troubleshooting Manual Reading Electrical Schematics Page 5-6 Issue 5.0 2016-05-06...
Page 223 STAGE INHIBIT 48V (B) - INTERNAL BUS (+) INTERNAL BUS (-) +15V DETECTOR ASSY # ARC DETECT - 12V POWER CONTROL/ +12V SUPPLY MONITOR 200W STAGE S2070235 V3 Figure SD-1: NX15/NX25 Transmitter - Ac-Dc Power Stage Issue 5.0 2016-05-06 SD-1...
Page 224 EXT 10 MHz # RF DRIVE LATCH (EXCITER B) - REFLECTED POWER SAMPLE STREAMING BUS (EXCITER B) FROM RF POWER +15V STAGE RF VOLTAGE SAMPLE -15V RF CURRENT SAMPLE S2070233 V2 Figure SD-2: NX15/NX25 Transmitter - Exciter Stage Issue 5.0 2016-05-06 SD-2...
Page 225 SYNC (GPS) CONTROLLER INTERNAL BUS (+) (OPTIONAL) GPS ANTENNA # INTERLOCK - # ADDRESS (GPS) - (N/U) # SYNK OK (GPS) - INTERNAL BUS (+) S2070234 V5 AES/EBU AUDIO (*) Figure SD-3: NX15/NX25 Transmitter - Control/Monitor Stage Issue 5.0 2016-05-06 SD-3...
Page 226 W61P2 NOTE: SEE FIGURE SD-6 FOR 5kW RF POWER BLOCK DETAIL PDM 1 (+) PDM 1 (-) (PART 1 OF 5) (PART 2 OF 5) (PART 3 OF 5) (PART 4 OF 5) (PART 5 OF 5) GROUP A PDM 2 (+) PDM 3 (+) PDM 3 (-) PDM 2 (-)
Page 227 CAPACITOR BANK 3 RF TRANSFORMER PART OF A5 (SAME AS ABOVE) CAPACITOR BANK 1 CAPACITOR BANK 2 RF OUT TO ANTENNA CONTROLLED DIRECTIONAL SURGE SPARKGAP GROUND 50pF STATIC TO SHEET ? ARRESTOR COUPLER SWITCH DRAIN 5000V STN GND (OPTIONAL) * DENOTES FREQUENCY DEPENDENT COMPONENTS (REFER TO CUSTOMER CONFIGURATION SHEET FOR CAPACITOR VALUES) 1000...
Page 228 +48V +48V +48V RETURN A?A1 A?A1 A?A1 A?A1 POWER POWER POWER POWER MODULE MODULE MODULE MODULE INTERFACE INTERFACE INTERFACE INTERFACE (PART 1 OF 4) (PART 3 OF 4) (PART 3 OF 4) (PART 4 OF 4) RF DRIVE 1 (+) RF DRIVE 1 (+) RF DRIVE 1 (-) RF DRIVE 1 (-) 6...
Page 229 MINOR MAJOR LOCAL REMOTE RF ON RF OFF INHIBIT ALARM ALARM C142 C152 C163 C160 R202 R209 R214 R217 R222 R233 R241 I/O7 PH2/XCK2 I/O6 PH3/OC4A AVCC I/O5 C144 PH4/OC4B I/O4 PH5/OC4C U56:H I/O3 RF_DRIVE_SAMPLE PH6/OC2B FROM SHEET 2 PF0/ADC0 U56:G I/O2 PH7/T4...
Page 230 TP46 # RF DRIVE LATCH (A) - U20:A VCC- U13:B # RF DRIVE LATCH (B) - TL3016ID +5V-C VCC+ TP52 CR19 1N5711 #FAST_SHUTBACK+ U49:A VCC- REFLD_PWR_SAMPLE U37:B C112 FROM SHEET 6 CR15 CR18 TL3016ID R349 R350 VCC+ 1N5711 1N5711 1000 +5V-C VCC+ C105...
Page 231 TP51 #PDM_LATCH_RESET- FROM SHEET 1 #PDM_LATCH- U43:A +3.3V TO SHEET 1 +3.3V 10.0K MODULATION_SAMPLE 10.0K U43:B 1.00M U29:C 10.0 10.0K +3.3V 10.0K U2:A U43:E 1.00M U29:A MM74HC00M PDM 1 C129 +3.3V U15:A U30:E PDM 1 MC3302D 1.00M U30:C U5:A +3.3V PDM 1 74LVC257APW 1000...
Page 232 CR45 U55:A DIGITAL TO ANALOG R195 +15V -15V CONVERTER C166 10.0K R194 CR43 R199 R200 220pF 2210 BALANCED R189 R182 DACA ANALOG C213 U74:A ANALOG OUT (RMT I/FACE) 1 BALANCED R257 AUDIO 0.01 R309 C264 R345 ANALOG SHIELD 10.0K 10.0 10.0 C211 C210...
Page 233 REMOTE INPUTS REMOTE INPUTS R286 R278 4750 4750 +15V-A +15V-A R328 R320 +15V +15V (REMOTE) 4750 R308 C247 U82:A 4750 R300 C239 U78:A C268 CR76 CR68 10.0K 0.01 MOCD223-M 10.0K 0.01 MOCD223-M RXE110 # DIGITAL INPUT 01 - # DIGITAL INPUT 09 - R285 R277 4750...
Page 234 REFLD_PWR_SAMPLE RF MON S5:A FWD PWR SAMPLE RF MONITOR R226 VINP VOUT R225 3320 R180 10.0K U60:A R213 FDBK C174 1000 U83:C R329 REFLD S5:B # DIGITAL OUT 01 - REFLD PWR SAMPLE R208 C226 C222 U83:D 12.1 R330 R224 R211 RESET VPOS...
Page 235 TP49 1 PPS (GPS) 74LVC257APW 74LVC257APW 1 PPS (EXCITER A) 1KHz (GPS) R116 1 PPS (EXCITER B) 49.9 10MHz (GPS) R101 R102 R113 10.0K 10.0K 10.0K 1 PPS (EXGINE) R115 49.9 1 PPS (COMB CONT) U45:A 10MHz (EXGINE) R119 C120 R134 49.9 R135...
Page 236 +15V +15V +15V +15V +15V +15V +15V +15V # DIGITAL INPUT 01 - # DIGITAL INPUT 01 - DS1:B DS1:A DS2:B DS2:A DS9:B DS9:A DS10:B DS10:A E1:1 E1:3 E2:1 E2:3 E9:1 E9:3 E10:1 E10:3 # DIGITAL INPUT 02 - # DIGITAL INPUT 02 - STATUS ALARM STATUS...
Page 237 TP10 +3.3V +3.3V LP38500TS-ADJ REF3033AIDBZT VREF 10.0K +3.3V 2210 +3.3V 10MHz #RECEIVER_ENABLE- +3.3V VOUT I/O/GCK3 OC14C-10M000 49.9 DAC8531E 10.0K +3.3V +3.3V MCP120T-270I/TT # SYNC OK - F3M3 RESET PD6/WR 49.9 +3.3V PC4/TCK/A12 SYNC +3.3V +3.3V PWRIN SCLK 1 PPS F2M4 FDC640P 0.001 F4M4...
Page 238 U2:A VBUS DOUT AES/EBU 22.1 OUTPUT 1 SSPND U2:D SHLD VOUTL 22.1 VOUTR PSEL 1500 TEST1 PCM2705DB TEST0 U2:C DGND 1500 ZGND AGNDL AES/EBU OUTPUT 2 AGNDR HID0/MS U2:B PGND SHLD HID1/MC HOST HID2/MD VCOM VCCL U2:E VCCR SN74AHC86D 12.000MHz 18pF 1.00M VCCP...
Page 239 RESET SERIAL INTERFACE MOSI DO/RI MISO DC_CURRENT INTERNAL BUS TP54 (IN) R182 R202 AC_SAMPLE FROM DO/RI R181 4750 4750 10.0K RESET SHEET 2 PE0/RXD0/PDI ADM803MAKS B+_LEVEL DS36C278TM S1:3 S1:4 TP57 RESET LAST INTERNAL BUS R180 MISO RACK R193 R194 (OUT) PE1/TXD0/PDO PROG VCC 49.9...
Page 240 CTRL RACK B+ SAMPLE B+ SAMPLE S1:7 R188 S1:5 S1:8 NX25 TP69 S1:6 R164 R204 1500 U27:C CTRL RACK 68.1K # 15V PS OK A - C146 R166 C174 R104 47.5K 0.047 0.47 3320 TP38 DC_CURRENT TP68 R165 AC_SAMPLE U20:A TO SHEET 1 1500 U27:B...
Page 241 +15V TO SHEETS 1 & 2 +15V TO SHEETS 1 & 2 +48V-A_SAMPLE PWB PART: HR67_S R175 C137R143 C116 R176 22.1K 475K 1000 ATL010A0X43-SR STPS40L15CW +15V (RECTIFIER) +5V (CONTROL) +48V-B_SAMPLE +15V VOUT TO SHEET 2 +15V (CONTROL) C145 C144 ON/OFF SENSE R174 C136...
Page 242 U31:D RF DRIVE 1 U31:A U16:A U20:A U24:A 82.5 82.5 U16:B U20:B U24:B C102 U4:A U8:A U12:A IDT74FCT807CTSO U4:B IDT74FCT807CTSO U8:B IDT74FCT807CTSO U12:B C101 U15:A U19:A U23:A U15:B U19:B U23:B U3:A U7:A U11:A U3:B U7:B U11:B ENABLE ENABLE RF DRIVE 1 RF DRIVE 1 RF DRIVE 1 U31:E...
Page 243 U31:C RF DRIVE 2 U31:B U16:C U20:C U24:C 82.5 82.5 U16:D U20:D U24:D U4:C U8:C U12:C IDT74FCT807CTSO U4:D IDT74FCT807CTSO U8:D IDT74FCT807CTSO U12:D ENABLE ENABLE U19:E U15:C U19:C U23:C DS26C31TM U15:D U19:D U23:D ENABLE ENABLE U7:E DS26C31TM U3:C U7:C U11:C U3:D U7:D U11:D ENABLE...
Page 244 U7:A U15:A U23:A U31:A U39:A PDM_A1 PDM 1 PDM_A1 PDM 1 PDM_A1 PDM 1 PDM_A1 PDM 1 PDM_A1 PDM 1 U7:B U15:B U23:B U31:B U39:B PDM_A2 PDM 2 PDM_A2 PDM 2 PDM_A2 PDM 2 PDM_A2 PDM 2 PDM_A2 PDM 2 MODULE MODULE MODULE...
Page 245 U1:C PDM_A1 ENABLE ENABLE ENABLE ENABLE PDM 1 U1:E U20:E DS26C32ATM DS26C31TM 82.5 82.5 ENABLE ENABLE ENABLE ENABLE U2:E U21:E DS26C32ATM DS26C31TM U1:D PDM_A2 PDM 2 ENABLE ENABLE U22:E DS26C31TM 82.5 82.5 GROUP A ENABLE ENABLE U23:E ENABLE ENABLE U1:A U6:E DS26C31TM PDM_A3...
Page 246 # MODULE U1:B 1000 #MODULE_ENABLE- ENABLE - 10.0K 82.5 82.5 33.2K C146 MODULATION 33.2K B+_SAMPLE DO NOT CONNECT PIN 76 33.2K ON BACKPLANE BOARD 1.00M 1.00M 1.00M 28.7K ACS756KCA-050B-PFF 1.00M VOUT PA_VOLTS_SAMPLE 22.1 0.15 CR19 1.00M 0.15 CSD10060A 1.00M 1.00M 1.00M 28.7K 1.00M...
Page 247 10.0K # RESET - RESET #MODULE_ENABLE- U21:E FROM SHEET 1 INT1 TLV2374ID XTAL2 3320 10-14MHz 18pF AIN1 XTAL1 10.0K 18pF +15V 3320 R102 OVER CURRENT TEST AIN0 10.0K #MOD_DRIVE_ENABLE+ CR10 10.0K 0.01 27.4K 1N4448HWS 10.0K DC_CURRENT IRLL110 ADC0 PB.1 +15V 100K SHEET 2 +15V...
Page 248: Mechanical Drawings
Section 3, “Parts Lists” on page 3-1. Follow the family tree branches to the block that contains the desired reference designation and Nautel nomenclature (e.g., NAPA34A Modulator/Power Amplifier PWB ). Note the reference designations and Nautel nomenclatures of all higher assemblies in the path.
Page 249 Then, repeat this procedure until the desired part or assembly is found. Table 6.1: List of Mechanical Drawings Figure # Title MD-1 NX25/NX15 Transmitter (Front View) MD-2 NX25/NX15 Transmitter (Rear View) MD-3 NAH60A RF Combiner Back Plane MD-4...
Page 250 Figure MD-1: NX15/NX25 Transmitter (Front View) Issue 5.0 2016-05-06 MD-1...
Page 251 Figure MD-2: NX15/NX25 Transmitter (Rear View) Issue 5.0 2016-05-06 MD-2...
Page 252 Power Module Interface PWB A2 & A3 Transformer Assemblies Figure MD-3: NAH60A RF Combiner Back Plane Issue 5.0 2016-05-06 MD-3...
Page 253 POWER MODULE INTERFACE NAPI95 SER. CAUTION! HIGH VOLTAGE PRESENT ON THIS ASSEMBLY M2070123 V1 REAR FRONT Figure MD-4: NAPI95A/02 Power Module Interface PWB Issue 5.0 2016-05-06 MD-4...
Page 254 Figure MD-5: NAE96C/01 Control/Exciter Panel Issue 5.0 2016-05-06 MD-5...
Page 255 (LOWER) FILTER +15V +15V SERIAL RACK DISTRIBUTION STREAMING BUS R145 10 MHz SYNC R361 RF MONITOR (TO AUI) (UPPER) C122 COMBINER SYSTEM INTERLOCK (TO AUI) CR80 SAMPLE CONTROL INHIBIT C134 R150 C168 AES 2 AES 1 BALANCED ANALOG AUDIO CR15 CR77 RF MONITOR R122...
Page 256 J2-19 DIGITAL AM EXCITER NAPE78 SER. TP14 -15V TP10 C100 C120 C132 TP15 +15V TP13 C218 +5V-A C101 C118 C131 C212 C185 C202 C153 C190 C213 C186 C203 C159 C191 C187 C204 C219 C209 +1.8V TP12 C154 C192 +5V-D C128 +3.3V-A C140 TP11...
Page 257 Figure MD-8: NAPI106 Remote Interface PWB Issue 5.0 2016-05-06 MD-8...
Page 258 LOCK ACQUIRE UNLOCK +3.3V 1PPS 1 kHz +3.3V 10MHz TP10 GPS SYNC NAPX46 SER. 1PPS M2130004 V2 Figure MD-9: NAPX46 GPS Sync PWB (Optional) Issue 5.0 2016-05-06 MD-9...
Page 259 USB AUDIO INTERFACE NAPI151 SER. M2060292 V1 Figure MD-10: NAPI151 USB Audio Interface PWB (Optional) Issue 5.0 2016-05-06 MD-10...
Page 260 POWER SUPPLY NEXT RACK CONTROL/INTERFACE C147 TP29 1 2 3 4 5 6 7 8 R195 R197 RT21 TP27 RT17 RT18 C159 C160 OPEN R152 R193 R188 C146 R154 TP65 TP66 R203 R135 R180 R132 TP54 TP57 TP52 TP53 R182 C121 TP26 TP5 TP8...
Page 261 Figure MD-12: NAPI98 RF Drive Distribution PWB Issue 5.0 2016-05-06 MD-12...
Page 262 (LOWER) (LOWER) (LOWER) (LOWER) (LOWER) (LOWER) (LOWER) (LOWER) (LOWER) (LOWER) (LOWER) (LOWER) (LOWER) (LOWER) (LOWER) (LOWER) (LOWER) (LOWER) (LOWER) (LOWER) (UPPER) (UPPER) (UPPER) (UPPER) (UPPER) (UPPER) (UPPER) (UPPER) (UPPER) (UPPER) (UPPER) (UPPER) (UPPER) (UPPER) (UPPER) (UPPER) (UPPER) (UPPER) (UPPER) (UPPER) C100 C101 C102...
Page 263 Figure MD-14: NAX243A B+ Distribution Assembly Issue 5.0 2016-05-06 MD-14...
Page 264 CUTAWAY FROM A1 TO SHOW LOCATION / ORIENTATION OF FETS Q7 TO Q10 MODULATOR / POWER AMPLIFIER PWB Figure MD-15: NAP39A RF Power Module Issue 5.0 2016-05-06 MD-15...
Page 265 Figure MD-16: NAPA34A Modulator/Power Amplifier PWB (Front View) Issue 5.0 2016-05-06 MD-16...
Page 266 CABLE 2 CABLE 1 M2070208 V1 REAR Figure MD-16: NAPA34A Modulator/Power Amplifier PWB (Rear View) Issue 5.0 2016-05-06 MD-17...
Page 267 Figure MD-18: Fan Tray Assembly (207-8133) Issue 5.0 2016-05-06 MD-18...
Page 268 Figure MD-19: Voltage Probe (207-6111) Issue 5.0 2016-05-06 MD-19...
Page 269 Figure MD-20: Current Probe (207-6213-04) Issue 5.0 2016-05-06 MD-20...
Page 270 A1 DETAIL Figure MD-21: NAFP106B/02 Directional Coupler Issue 5.0 2016-05-06 MD-21...
Page 271: List Of Terms
NX25/NX15 Troubleshooting Manual List of terms Section 7: 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 272 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 NX25/NX15 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 274: Issue 5.0 2016-05-06
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 2016 NAUTEL. All rights reserved.

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