GV30N TROUBLESHOOTING MANUAL TABLE OF CONTENTS CONTENTS Contact Information 4.iii RELEASE CONTROL RECORD Responding to alarms 4.1.1 Corrective Maintenance 4.1.1 Electrostatic Protection 4.1.3 Identifying an Alarm 4.1.4 Accessing the Inside of the Transmitter 4.1.29 Troubleshooting Tips 4.1.30 Replacement Procedures 4.1.40 RF Power Module Replacement 4.1.41...
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GV30N TROUBLESHOOTING MANUAL TABLE OF CONTENTS Column Content 4.2.2 OEM Code to Manufacturers Cross-Reference 4.2.4 Common Abbreviations/Acronyms 4.2.4 Wiring/connector lists 4.3.1 Wiring Lists Provided 4.3.1 Wiring Lists Not Provided 4.3.1 Connector Mating Information 4.3.1 Wire Colours 4.3.1 Printed Wiring Board Patterns 4.3.1...
GV30N TROUBLESHOOTING MANUAL RELEASE CONTROL RECORD ISSUE DATE REASON 2014-11-01 Preliminary Release of GV30N (NARF74/02) VERSION 0.1 2014-11-01 PAGE 4.VII...
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GV30N TROUBLESHOOTING MANUAL PAGE 4.VIII VERSION 0.1 2014-11-01...
Troubleshooting Tips - see page 4.1.30 Replacement Procedures - see page 4.1.40 If none of the procedures and alarms described in this section address your problem, contact Nautel for assistance. See “Technical support” on page Corrective Maintenance Corrective maintenance procedures consist of identifying and correcting defects or deficiencies that arise during transmitter operation.
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GV30N TROUBLESHOOTING MANUAL RESPONDING TO ALARMS Remote Troubleshooting Remote on-air troubleshooting consists of monitoring the transmitter's radiated signal using an on-air monitor or via a LAN connection, 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).
GV30N 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.
GV30N TROUBLESHOOTING MANUAL RESPONDING TO ALARMS Identifying an Alarm You can identify an alarm locally by viewing the local or remote AUI’s Transmitter Status page (see “AUI Transmitter Status Page Checks”). As a backup option, you can also view the front panel of the controller module (A4) (see “Controller Module Front Panel Alarm Checks”...
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GV30N TROUBLESHOOTING MANUAL RESPONDING TO ALARMS Figure 4.1.1: Transmitter Status Page Click the Status button to go to the Transmitter Status page (see Figure 4.1.1). View the list of active faults. Alarms are listed by their origin ( Device column), then by name ( Alarm column), and then by severity ( Level column) [single orange ! indicates low severity (RF output not affected);...
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If troubleshooting and subsequent replacement of a suspect PWB or module causes the alarm to disappear from the Transmitter Status page, the alarm has been successfully cleared. If the fault condition does not clear, contact Nautel. : Before undertaking any troubleshooting, record all AUI meter readings and note if any other NOTE alarms are displayed on the Transmitter Status page .
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GV30N TROUBLESHOOTING MANUAL RESPONDING TO ALARMS Controller Module Front Panel Alarm Checks There two ways to check for alarms on the front panel: Alarm/Status LEDs View Alarms Screen - see page 4.1.8 Alarm/Status LEDs There are four LEDs on the left-hand side of the LCD display that provide information about the...
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If troubleshooting and subsequent replacement of a suspect PWB or module causes the alarm to disappear from the View Alarms screen, the alarm has been successfully cleared. If the fault condition does not clear, contact Nautel. PAGE 4.1.8 VERSION 0.1 2014-11-01...
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GV30N TROUBLESHOOTING MANUAL RESPONDING TO ALARMS Table 4.1.1: Troubleshooting Alarms Device and Controller Front Alarm Name Description and Troubleshooting Action Panel LED (color) (AUI, UI) Controller: AC Not displayed in AUI or UI status. Configurable as a remote output.This Summary (AC Summ) alarms occurs if there are any ac input related alarms present.
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GV30N TROUBLESHOOTING MANUAL RESPONDING TO ALARMS Device and Controller Front Alarm Name Description and Troubleshooting Action Panel LED (color) (AUI, UI) Controller: Cutback Output Network This alarm occurs whenever the transmitter experiences a cutback. A Active (amber) cutback (reduction in power) occurs when repeated shutback alarms occur within a prescribed time period.
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GV30N TROUBLESHOOTING MANUAL RESPONDING TO ALARMS Device and Controller Front Alarm Name Description and Troubleshooting Action Panel LED (color) (AUI, UI) Controller: External Exciter (red) The external interlock input wired to the controller (A4) or optional remote Interlock Open interface PWB (A16), if used, is open. Check the interlock connection...
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This alarm occurs if the backup battery voltage falls below an acceptable Battery level (2.7 V). The GV30N takes no action on this alarm. Use a digital multimeter to measure the battery voltage (with ac power on). If the battery voltage is low, replace the battery.
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GV30N TROUBLESHOOTING MANUAL RESPONDING TO ALARMS Device and Controller Front Alarm Name Description and Troubleshooting Action Panel LED (color) (AUI, UI) Controller: LVPS Fail Power Supply (red) This alarm occurs if the LVPS voltage is less than 32 V or greater than 53 V.
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GV30N TROUBLESHOOTING MANUAL RESPONDING TO ALARMS Device and Controller Front Alarm Name Description and Troubleshooting Action Panel LED (color) (AUI, UI) Controller: PA Pwr Output Network This alarm occurs if the control system determines that the calculated Foldback (Per PA...
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GV30N TROUBLESHOOTING MANUAL RESPONDING TO ALARMS Device and Controller Front Alarm Name Description and Troubleshooting Action Panel LED (color) (AUI, UI) Controller: Reduced Output Network Not displayed in AUI or UI status. Configurable as a remote output. This Power Summary (amber) alarms occurs if there are any alarms present that caused the transmitter’s...
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GV30N TROUBLESHOOTING MANUAL RESPONDING TO ALARMS Device and Controller Front Alarm Name Description and Troubleshooting Action Panel LED (color) (AUI, UI) Controller: SBC Not Exciter (red) This alarm indicates that the controller’s SBC is not communicating with the Responding rest of the transmitter. If the watchdog function is enabled, the DSP will automatically reset the SBC.
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GV30N TROUBLESHOOTING MANUAL RESPONDING TO ALARMS Device and Controller Front Alarm Name Description and Troubleshooting Action Panel LED (color) (AUI, UI) Controller: Turn On Exciter (red) This alarm occurs, if the turn-on delay function is enabled, and transmitter is Delay (Delaying Turn not permitted turn-on until the delay period elapses.
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GV30N TROUBLESHOOTING MANUAL RESPONDING TO ALARMS Device and Controller Front Alarm Name Description and Troubleshooting Action Panel LED (color) (AUI, UI) Controller: +12V B Power Supply (red) This alarm occurs if the secondary +12 V supply in the controller is 10% Fail lower or 10% higher than the desired value.
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GV30N TROUBLESHOOTING MANUAL RESPONDING TO ALARMS Device and Controller Front Alarm Name Description and Troubleshooting Action Panel LED (color) (AUI, UI) Exciter A/B: Analog Exciter (amber) This alarm indicates the analog left or right audio input level is too low or is Left (or Right) Low not applied.
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This alarm occurs if the backup battery voltage falls below 2.7 V. The Battery GV30N takes no action on this alarm. Use a digital multimeter to check the battery voltage (with ac power on). If the battery voltage is low, replace the battery.
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GV30N TROUBLESHOOTING MANUAL RESPONDING TO ALARMS Device and Controller Front Alarm Name Description and Troubleshooting Action Panel LED (color) (AUI, UI) Exciter A/B: No This alarms occurs, in FM+HD or HD mode, if no 10 MHz clock is being Exgine 10 MHz detected from the Exgine PWB.
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Exciter (amber) This alarm indicates that no valid AES/EBU stream data is being detected on SRC2) Unlock the selected AES/EBU input. Check audio input cables. The GV30N takes no action on this alarm. Exciter A/B: Summary Not displayed in AUI or UI status. Configurable as a remote output. This Alarm alarms occurs if there are any alarms present.
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GV30N TROUBLESHOOTING MANUAL RESPONDING TO ALARMS Device and Controller Front Alarm Name Description and Troubleshooting Action Panel LED (color) (AUI, UI) Exciter A/B: Unsigned Exciter (red) This alarm indicates that the exciter is operating with ‘unsigned code’, but FPGA Image (Bad is otherwise operational.
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GV30N TROUBLESHOOTING MANUAL RESPONDING TO ALARMS Device and Controller Front Alarm Name Description and Troubleshooting Action Panel LED (color) (AUI, UI) Module #: Low RF This alarm occurs if the input RF drive (exciter power) is less than 10 W Drive Power (RF Drv the transmitter has not intentionally reduced it to that level.
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GV30N TROUBLESHOOTING MANUAL RESPONDING TO ALARMS Device and Controller Front Alarm Name Description and Troubleshooting Action Panel LED (color) (AUI, UI) Module #: PS A (or B) Power Supply (red) This alarm occurs if one of the two module power supplies (1 or 2) is AC Fail reporting an ac failure, indicating its ac input voltage is less than 175 V ac.
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GV30N TROUBLESHOOTING MANUAL RESPONDING TO ALARMS Device and Controller Front Alarm Name Description and Troubleshooting Action Panel LED (color) (AUI, UI) Module #: Reject Output Network This alarm occurs when the reject power in the power module’s combiner Power Shutback (Rej (amber) suddenly exceeds 600 W, requiring a shutback.
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GV30N TROUBLESHOOTING MANUAL RESPONDING TO ALARMS Device and Controller Front Alarm Name Description and Troubleshooting Action Panel LED (color) (AUI, UI) Rack #: High Ambient This alarm is indication only and occurs if the transmitter’s ambient Temperature (High temperature exceeds 60°C (140°F). Check the intake air filters or cooling Amb Temp) system.
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GV30N TROUBLESHOOTING MANUAL RESPONDING TO ALARMS Device and Controller Front Alarm Name Description and Troubleshooting Action Panel LED (color) (AUI, UI) Rack #: Residual PA Exciter (red) This alarm indicates that after the transmitter has turned off its RF output, it Volts (Residual PA V) is unable to discharge the PA volts to a level that is below 10 V.
Accessing the Inside of the Transmitter The front of the GV30N has a hinged door that provides access to the remote interface PWB (A16), RF power modules 1 through 12 (A8 through A11, A20 through A23, A36 through A39), LVPS modules 1A (U2), 1B (U3), 2A (U12, if purchased) and 2B (U13, if purchased), power supply modules (U4 through U11, U14 through U29), controller module (A4) and exciters A (A5) and B (A6, if purchased).
Open the front door and use the controller’s UI to navigate to the System Settings -> SBC Reset screen. Select Force SBC Reset and press accept to save the changes (see the GV30N Operations & Maintenance Manual). If this does not restore operation of the AUI, proceed to Step 3 Remove the rear panel to gain access to the rear of the controller module (A4).
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GV30N TROUBLESHOOTING MANUAL RESPONDING TO ALARMS RF Power Module Faults There are many alarms on the AUI (local or remote) or controller UI, prefixed by the text RF Module , that indicate faults related to one or more of the RF power modules. The number that appears after RF Module (1-12) identifies the position of the affected module.
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GV30N TROUBLESHOOTING MANUAL RESPONDING TO ALARMS Figure 4.1.7: RF Module Status Screen PAGE 4.1.32 VERSION 0.1 2014-11-01...
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GV30N TROUBLESHOOTING MANUAL RESPONDING TO ALARMS RF Power Module Fault Validation Each RF power module has a multi-colour LED on its front panel, which can help in identifying a fault and allowing you to determine whether remedial action is required now or later.
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GV30N TROUBLESHOOTING MANUAL RESPONDING TO ALARMS If an RF power module has one or more defective PAs, as indicated by the AUI's Module Status screen (and suspect RF power module's front panel LEDs), but is still contributing to the transmitter's RF output, it may be left on.
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GV30N TROUBLESHOOTING MANUAL RESPONDING TO ALARMS Power Supply Module and LVPS Faults There are various power supply module and LVPS module related alarms on the AUI (local or remote) or controller UI. Power supply module alarms are prefixed by the text RF Module and then PS . The number that appears after RF Module (1-12) identifies the position of the affected module.
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GV30N TROUBLESHOOTING MANUAL RESPONDING TO ALARMS Figure 4.1.8: AUI - Meter List View page 1. Click here to open the Meter List View page 2. Click here to view LVPS meters 3. Click here to view power supply module meters Figure 4.1.9: Module Status - Power Supply Meters...
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GV30N TROUBLESHOOTING MANUAL RESPONDING TO ALARMS Figure 4.1.10: Rack Status - LVPS meters VERSION 0.1 2014-11-01 PAGE 4.1.37...
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GV30N TROUBLESHOOTING MANUAL RESPONDING TO ALARMS Power Supply or LVPS Module Fault Validation Each power supply and LVPS module has four LEDs on its front panel (see Figure 4.1.11, which can help in identifying a fault and allowing you to determine whether remedial action is required now or later.
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GV30N TROUBLESHOOTING MANUAL RESPONDING TO ALARMS Table 4.1.3: Other Power Supply LED States Power Supply LED State Condition AC OK DC OK SERVICE FAULT (green) (green) (amber) (red) Thermal alarm (5 degrees before shutdown) Thermal shutdown Defective fan, blown ac fuse, boost stage failure or over...
GV30N TROUBLESHOOTING MANUAL RESPONDING TO ALARMS Replacement Procedures Table 4.1.4 lists the procedures available in this manual for replacing modules, PWBs and cooling fans. Table 4.1.4: Replacement Procedures Module Replacement Procedure page 4.1.41 RF Power Module page 4.1.44 Power Amplifier PWB RF Module Cooling Fan page 4.1.46...
GV30N TROUBLESHOOTING MANUAL RESPONDING TO ALARMS RF Power Module Replacement Removing an RF Power Module Confirm the location of the RF power module that is being removed. Note the alarm text includes a Module number (1-12) that is not identified on the RF power module. See Figure 4.1.12 on page...
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GV30N TROUBLESHOOTING MANUAL RESPONDING TO ALARMS Figure 4.1.12: RF Power Module Numbers/Locations M5 securing screws (2 per module) Partial Front View - Front Doors Open Enable/Disable Switch PAGE 4.1.42 VERSION 0.1 2014-11-01...
FET. A spare power amplifier PWB (NAPA31C) is provided in the transmitter station spares kit, if purchased. To order a station spares kit or replacement power amplifier PWB contact Nautel. Failure to observe this recommendation may void your equipment warranty or cause further failures.
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: FETs are static sensitive and must be handled in a static protected manner. NOTE Spread a small amount of thermal compound (Nautel Part # HAG39, from the station spares kit), thinly and evenly, on the bottom of the FET flange on the new PA PWB.
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GV30N TROUBLESHOOTING MANUAL RESPONDING TO ALARMS PA Resistance Checks Using a digital multimeter, check the continuity across fuse F1 on the suspect PA PWB. If the measurement is an open circuit, replace the PA PWB (see “PA PWB Replacement” on page 4.1.44).
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Remove and retain the cooling fan’s two M3 captive screws that secure the fan to the module. Obtain a replacement fan (Nautel Part # ZAP50) from the site spares kit or station spares kit or from a suitable equivalent (vendor part # is Minebea Motor Mfg. Corp. 3115RL-07W-B79-E51).
GV30N TROUBLESHOOTING MANUAL RESPONDING TO ALARMS LVPS Module Replacement WARNING! Lethal voltages exist inside the transmitter when the power is turned on. Follow replacement instructions carefully to ensure safety for maintenance personnel during power supply replacement. Figure 4.1.14: Location of LVPS Modules...
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Figure 4.1.15 on page 4.1.48 as a guide, remove the LVPS module from the front of the transmitter. Locate or obtain a replacement LVPS module (Nautel Part # UG92B). Using Figure 4.1.15 on page 4.1.48 as a guide, reinstall the new LVPS module.
GV30N TROUBLESHOOTING MANUAL RESPONDING TO ALARMS Power Supply Module Replacement WARNING! Lethal voltages exist inside the transmitter when the power is turned on. Follow replacement instructions carefully to ensure safety for maintenance personnel during power supply replacement. Figure 4.1.16: Location of Power Supply Modules...
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Using Figure 4.1.17 as a guide, remove the power supply module from the front of the transmitter. Locate or obtain a replacement power supply module (Nautel Part # UG92B). Using Figure 4.1.17 as a guide, reinstall the new power supply module.
GV30N TROUBLESHOOTING MANUAL RESPONDING TO ALARMS Remote Interface PWB Replacement Using Figure 4.1.18 as a guide, replace the remote interface PWB as follows: Figure 4.1.18: Remote Interface PWB Location Remote Customer interlock Customer remote Interface PWB wiring (TB1) control/monitor wiring...
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Remove and retain six sets of mounting hardware from the remote interface PWB. Remove the remote interface PWB from the transmitter. Locate or obtain a replacement remote interface PWB (Nautel Part # NAPI143/02). Set jumpers E1 and E2 on the new remote interface PWB to the same positions as the defective PWB.
GV30N TROUBLESHOOTING MANUAL RESPONDING TO ALARMS Cooling Fan Replacement Figure 4.1.19. Figure 4.1.19: Removing a Cooling Fan FAN COVERS (secured with M5 screws at the top; hooks at the bottom) B1 B2 B7 B8 COOLING FANS B1 - B11 B4 B5...
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Retain the fan’s finger guard (Nautel Part # HAA63). Obtain a replacement fan (Nautel Part # ZAP50) from the site spares kit or station spares kit, if purchased or a suitable equivalent (vendor part # is Minebea Motor Mfg. Corp. 3115RL-07W-B79- E51).
GV30N TROUBLESHOOTING MANUAL RESPONDING TO ALARMS Reject Load or Reject Load/Splitter Interface Assembly Replacement Using Figure 4.1.20 as a guide, replace one of the four reject load assemblies or one of the two reject load/splitter interface assemblies as detailed in this section. Identify the affected reject load, possibly named in an alarm reference and then replace it, as follows: ...
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Remove the two M4 screws that secure the 2-input reject load assembly to the transmitter. Slide the 2-input reject load assembly out of the transmitter. Obtain a replacement reject load assembly (Nautel Part # NAL16) and install it by reversing the instructions in step 1 and step 2. PAGE 4.1.56...
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GV30N TROUBLESHOOTING MANUAL RESPONDING TO ALARMS Figure 4.1.20: Replacing a Reject Load or Splitter Interface Assembly PARTIAL FRONT VIEW (front panels removed) Remove the cooling fan cover (four M5 screws at the top; hooks at the bottom) to access reject...
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Disconnect the mating connectors from the reject load/splitter interface assembly (A28 or A30). Pull out the reject load/splitter interface assembly. Obtain a replacement reject load/splitter interface assembly (Nautel Part # NAX269) and install it by reversing the instructions in steps 1 through step 3. PAGE 4.1.58 VERSION 0.1 2014-11-01...
GV30N TROUBLESHOOTING MANUAL RESPONDING TO ALARMS Controller Replacement Figure 4.1.21: Location of Controller Module M5 securing hardware Controller Module A4 PARTIAL REAR VIEW PARTIAL FRONT VIEW (panels removed) (front doors open) If possible, use the controller’s front panel UI and the remote AUI to record all custom user settings including: network settings, preset/audio settings, user accounts, logs, SNMP configuration, email configuration, time zone, notifications and playlists.
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If you are replacing the controller module’s controller PWB (A2), see “Controller PWB Replacement - Controller” on page 4.1.64. Obtain a replacement controller module (Nautel Part # NAC118 or newer) and install it by reversing the instructions in Step 4 Step Enable and turn on ac power to the transmitter.
GV30N TROUBLESHOOTING MANUAL RESPONDING TO ALARMS Single-Board Computer (SBC) Replacement Using Figure 4.1.22 as a guide, replace the controller module’s single-board computer (SBC) (A4A1) as follows: Figure 4.1.22: Single-Board Computer A4A1 (inside controller module A4) A1W1P1 Flash Card (U5) (mates with...
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Retain all hardware for re- installation. Remove the SBC from the controller module by removing five M3 securing screws. Locate or obtain the replacement SBC (Nautel Part # 219-8974). If the replacment SBC does not contain a compact flash card (U5) (see Figure on page 4.1.61), obtain the card from the SBC...
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GV30N TROUBLESHOOTING MANUAL RESPONDING TO ALARMS Figure 4.1.23: Upgrade Software - About screen indicates a controller upgrade is available in version 2.7 VERSION 0.1 2014-11-01 PAGE 4.1.63...
GV30N TROUBLESHOOTING MANUAL RESPONDING TO ALARMS Controller PWB Replacement - Controller Using Figure 4.1.24 as a guide, replace the controller module’s controller PWB (A4A2) as follows: Figure 4.1.24: Controller PWB Location - Controller Module top view CONTROLLER TOP VIEW (cover removed) Remove the controller module (A4) as described in “Controller Replacement”...
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PWB. Retain hardware for re-installation. Slightly lift the front edge of the controller PWB and pull towards the front of the controller. Locate or obtain a replacement controller PWB (Nautel Part # NAPC163). CAUTION! When re-installing the controller PWB, lift the PWB high enough so that the mounting pillars do not damage parts on the underside of the PWB.
GV30N TROUBLESHOOTING MANUAL RESPONDING TO ALARMS Exciter Replacement Figure 4.1.25: Location of Exciter Module M5 securing hardware Exciter A (A5) Exciter B (A6) PARTIAL REAR VIEW PARTIAL FRONT VIEW (panels removed) (front doors open) For dual exciter transmitters, ensure the other exciter (A5 or A6) is operating as the main RF drive source and disable automatic changeover (see the Operations &...
If you are replacing the exciter module’s exciter/control PWB (A1), see “Exciter/Control PWB Replacement - Exciter” on page 4.1.68. Obtain a replacement exciter module (Nautel Part # NAE107A or newer) and install it by reversing the instructions in Step 3 Step Close the transmitter’s front door and re-install the upper,...
GV30N TROUBLESHOOTING MANUAL RESPONDING TO ALARMS Exciter/Control PWB Replacement - Exciter Using Figure 4.1.26 as a guide, replace the exciter module’s exciter/control PWB (A5A1 or A6A1) as follows: Figure 4.1.26: Exciter/Control PWB Location - Exciter EXCITER/ CONTROL TOP VIEW (cover removed) Remove the exciter module (A5 or A6, as applicable) as described in “Exciter Replacement”...
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Slightly lift the front edge of the exciter/control PWB and pull towards the front of the exciter. Locate or obtain a replacement exciter/control PWB (Nautel Part # NAPE86A or newer). Remove the "push" lever from the XLR connector as detailed in...
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GV30N TROUBLESHOOTING MANUAL RESPONDING TO ALARMS Figure 4.1.27: Removing the XLR connector’s “push” lever Figure 4.1.28: Loosening the BNC connector’s locking ring PAGE 4.1.70 VERSION 0.1 2014-11-01...
GV30N TROUBLESHOOTING MANUAL RESPONDING TO ALARMS Module Control/Interface PWB Replacement Using Figure 4.1.29 as a guide, replace module control/interface PWB (A3, A18, A34) as follows: Figure 4.1.29: Module Control/Interface PWB Location M3 securing hardware (14 nuts/ washers for each PWB)
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Remove eight M3 screws that connect the PWB’s edge-card connectors to the transmitter. Pull out the module control/interface PWB. Obtain a replacement module control/interface PWB (Nautel Part # NAPC158B) and install it by reversing the instructions in Step 1...
GV30N TROUBLESHOOTING MANUAL RESPONDING TO ALARMS Power Supply Interface PWB Replacement Using Figure 4.1.30 as a guide, replace one of the power supply interface PWB (A1, A17, A33) as follows: Figure 4.1.30: Power Supply Interface PWB Location Power Supply Power Supply...
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Remove 24 sets of M3 nuts and washers that secure the power supply interface PWB to the transmitter and pull out the power supply interface PWB. Obtain a replacement power supply interface PWB (Nautel Part # NAPI150A) and install it by reversing the instructions in...
To locate the information for a specific part, the assigned reference designation for the part must be known. In addition, the Nautel nomenclature (e.g., NAA61B) assigned to the assembly containing the part or the full reference designation, including the reference designation of all higher assemblies, must be known.
Nautel part (e.g., 219-8401-01) 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 4.2.1 on page 4.2.7 through Figure 4.2.3 on page...
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The listed number is Nautel's usual or preferred choice. The use of this number does not restrict Nautel from selecting and using commercial equivalents during manufacture, where their use will not degrade circuit operation or reliability.
After entering the OEM (CAGE) code number, manufacturer pertinent information (address, telephone number, fax number, etc.) will be displayed. Please contact Nautel if a part cannot be obtained (see also “On-Line Part Quotes” in the Warranty section of this manual).
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GV30N TROUBLESHOOTING MANUAL PARTS LISTS Table 4.2.1: OEM Codes/ Manufacturers OEM CODE MANUFACTURER OEM CODE MANUFACTURER 3WCG0 Ferraz Shawmut Incorporated C & D C & D Technologies 45496 Digital Systems COMET 48862 GC Electronics Comp Corp Components Corporation 49588 S B E Incorporated...
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GV30N TROUBLESHOOTING MANUAL PARTS LISTS Figure 4.2.1: GV30N Family Tree GV30N 30 kW FM BROADCAST TRANSMITTER NARF74/02 POWER SUPPLY INTERFACE PWB MONITOR FAN ASSEMBLY MODULE CONTROL/INTERFACE PWB NAPI150A NAX273A NAPC158B CONTROLLER EXCITER A NAC118A NAE107A (Analog) or NAE107A/01 (HD) A4A1...
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GV30N TROUBLESHOOTING MANUAL PARTS LISTS Figure 4.2.2: GV30N Family Tree (continued) COMBINER/FILTER, 10 kW (RHS) 2-INPUT REJECT LOAD ASSY, 1500 W OUTPUT POWER PROBE ASSY NAF119/02A NAL16 NOT USED NAFP109B A12A1 10kW FILTER ASSY (RHS) A15A1 A15A2 NAF118/01 FORWARD RF SAMPLE PWB...
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GV30N TROUBLESHOOTING MANUAL PARTS LISTS Figure 4.2.3: GV30N Family Tree (continued) REJECT LOAD/SPLITTER INTERFACE ASSY 4-INPUT REJECT LOAD ASSY, 1500 W POWER SUPPLY INTERFACE PWB (SAME AS A28) (SAME AS A29) NAX269 NAL17 NOT USED NAPI150A A36 - A39 MODULE CONTROL/INTERFACE PWB...
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GV30N TROUBLESHOOTING MANUAL PARTS LISTS PAGE 4.2.10 VERSION 0.1 2014-11-01...
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Continued from previous page 219-8301 Cableset Assy, 30kW NVLT/GV REFDES DESCRIPTION NAUTEL # VENDOR # OEM CODE Installed at Next Higher Assy INSTALLED AT NEXT 37338 HIGHER ASSY Installed at Next Higher Assy INSTALLED AT NEXT 37338 HIGHER ASSY Installed at Next Higher Assy...
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Continued from previous page 219-8301 Cableset Assy, 30kW NVLT/GV REFDES DESCRIPTION NAUTEL # VENDOR # OEM CODE W50P2 Conn, Coax, N, Plug, Crimp, RG142 JT12 11-N-50-3-29/133 0GZ58 W51P1 Conn, Coax, N, Plug, Crimp, RG142 JT12 11-N-50-3-29/133 0GZ58 W51P2 Conn, Coax, N, Plug, Crimp, RG142...
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219-8308 AC/LV Cable Set Assy, 30kWNVLT/GV REFDES DESCRIPTION NAUTEL # VENDOR # OEM CODE Installed at Next Higher Assy INSTALLED AT NEXT 37338 HIGHER ASSY Installed at Next Higher Assy INSTALLED AT NEXT 37338 HIGHER ASSY Connector,Plug, 2 pos, Socket,20A, 600V, 7.62mm,...
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Continued from previous page NAPC163 Controller PWB Assy, GV Series REFDES DESCRIPTION NAUTEL # VENDOR # OEM CODE Inductor, SMT, Choke, 2000 ohms, 80mA, 0805 LCFS02 ILBB0805ER202V(Ro 56845 Not Used NOT USED 37338 Not Used NOT USED 37338 Not Used...
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Continued from previous page NAPC163 Controller PWB Assy, GV Series REFDES DESCRIPTION NAUTEL # VENDOR # OEM CODE R254 Resistor,SMT,MF,10.0Kohms,1%,1/10W,0603 RFFS50 RK73H1JLTD1002F 59124 R255 Not Used NOT USED 37338 R256 Not Used NOT USED 37338 R257 Not Used NOT USED...
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Continued from previous page NAPC163 Controller PWB Assy, GV Series REFDES DESCRIPTION NAUTEL # VENDOR # OEM CODE IC, Voltage Regulator, 1.5A,ADJ, Low Drop UT110 LP38500TS- 27014 ADJ(STATIC) National IC, Voltage Regulator, 1.5A,ADJ, Low Drop UT110 LP38500TS- 27014 ADJ(STATIC) National IC, Voltage Regulator, 1.5A,ADJ, Low Drop...
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Continued from previous page NAPI143/02 Remote Interface w/ TerminalBlock, PWB Assy (NVLT/GV REFDES DESCRIPTION NAUTEL # VENDOR # OEM CODE Page 125 of 164 NAPI143/02...
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NAPI150A Power Supply Interface PWBAssy NVLT/GV REFDES DESCRIPTION NAUTEL # VENDOR # OEM CODE C001 Cap,SMT,Ceramic,100pF,2%,50V,C0G,0603 CCFS32 C0603C101G5GAC 31433 C002 Cap,SMT,Tantalum,1uF,10%,35V,1411 CTFS02 T494B105K035AS 31433 C003 Not Used NOT USED 37338 C004 Not Used NOT USED 37338 C005 Not Used NOT USED...
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Continued from previous page NAPI150A Power Supply Interface PWBAssy NVLT/GV REFDES DESCRIPTION NAUTEL # VENDOR # OEM CODE C040 Cap,SMT,Ceramic,0.001uF,10%,50V,X7R,0603 CCFS01 C0603C102K5RAC 31433 C041 Not Used NOT USED 37338 C042 Cap,SMT,Ceramic,0.001uF,10%,50V,X7R,0603 CCFS01 C0603C102K5RAC 31433 C043 Not Used NOT USED 37338 C044 Cap,SMT,Ceramic,0.001uF,10%,50V,X7R,0603...
GV30N TROUBLESHOOTING MANUAL WIRING/CONNECTOR LISTS SECTION 4.3: 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 4.3.1 on page 4.3.2 lists the tables containing wiring information.
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Wiring List - NAA61B RF Power Module ( Table 4.3.2: Connector Mating Information Provided TABLE # Description Table 4.3.4 page 4.3.11 Connector Mating Information - GV30N Transmitter ( Table 4.3.6 page 4.3.18 Connector Mating Information - NAC118A Controller ( Table 4.3.8 page 4.3.20 Connector Mating Information - NAE107A or NAE107A/01 Exciter ( Table 4.3.11...
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GV30N TROUBLESHOOTING MANUAL WIRING/CONNECTOR LISTS Table 4.3.3: Wiring List - GV30N Transmitter Source Destination Wire # Colour Size Remarks A1E14-- E3-- Black A1E16-- E4-- White A1E17-- E5-- Black A1E13-- E32-- White A1E14-- E33-- Black A1E16-- E34-- White A1E17-- E35-- Black...
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GV30N TROUBLESHOOTING MANUAL WIRING/CONNECTOR LISTS Table 4.3.3: Wiring List - GV30N Transmitter Source Destination Wire # Colour Size Remarks A1E10-- A3E1-- White A1E11-- E19-- Black A1E5-- A3E2-- White A1E6-- E19-- Black Not Used Not Used Not Used Not Used A17E23--...
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GV30N TROUBLESHOOTING MANUAL WIRING/CONNECTOR LISTS Table 4.3.3: Wiring List - GV30N Transmitter Source Destination Wire # Colour Size Remarks A33E8-- E26-- Black A33E3-- A34E4-- White A33E4-- E26-- Black A33E10-- A34E1-- White A33E11-- E27-- Black A33E5-- A34E2-- White A33E6-- E27-- Black...
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GV30N TROUBLESHOOTING MANUAL WIRING/CONNECTOR LISTS Table 4.3.3: Wiring List - GV30N Transmitter Source Destination Wire # Colour Size Remarks P14-19 P9-9 White P15-10 P9-1 White P15-11 P9-2 White P15-12 P9-3 White P14-1 P8-6 White P14-2 P8-7 White P14-3 P8-8 Black...
Resistor power ratings are not shown when less than 0.5 W Unidentified diodes are part number BAS21HT1 (Nautel Part # QDRS01) 24V Unidentified transient suppressors are part number 0603E SDA-TR1 (Nautel Part # QR70) Graphic and Logic 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.
GV30N 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.
4.2.1. Follow the family tree branches to the block that contains the desired reference designation, and associated Nautel nomenclature (e.g., NAPA31C Power Amplifier PWB ). Note the reference designations and Nautel nomenclatures of all higher assemblies in the path. Example: A8 NAA61B RF Module Assy 1 -> A8A1 NAPA31C Power Amplifier PWB .
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: A8 NAA61B RF Module Assy 1 -> A8A1 NAPA31C Power Amplifier PWB .
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Table 4.4.1: List of Electrical Schematics Figure # Title SD-1A GV30N Transmitter - Ac-Dc Power Stage, 3-Phase, 175-265 V ac (Sheet 1 of 3) SD-1B GV30N Transmitter - Ac-Dc Power Stage, 3-Phase, 303-459 V ac (Sheet 1 of 3) SD-1C...
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GV30N TROUBLESHOOTING MANUAL READING ELECTRICAL SCHEMATICS Table 4.4.1: List of Electrical Schematics Figure # Title SD-33 NAPS47A/01 Power Supply Distribution PWB (Sheet 1 of 2) SD-34 NAPS47A/01 Power Supply Distribution PWB (Sheet 2 of 2) SD-35 NAPA35 Pre-Amplifier PWB SD-36...
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CUSTOMER STATION REFERENCE GROUND TO ALL SHEETS CONNECTION POINT REAR RHS PANEL BONDING WIRE REAR LHS PANEL S2190296 V1 BONDING WIRE Figure SD-1A: GV30N Transmitter - Ac-Dc Power Stage, 3-Phase, 175-265 V ac (Sheet 1 of 3) VERSION 0.1 2014-11-01 SD-1A...
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CUSTOMER STATION REFERENCE GROUND TO ALL SHEETS CONNECTION POINT REAR RHS PANEL BONDING WIRE S2190297 V1 REAR LHS PANEL BONDING WIRE Figure SD-1B: GV30N Transmitter - Ac-Dc Power Stage, 3-Phase, 303-459 V ac (Sheet 1 of 3) VERSION 0.1 2014-11-01 SD-1B...
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CUSTOMER STATION REFERENCE GROUND TO ALL SHEETS CONNECTION POINT REAR RHS PANEL BONDING WIRE S2190298 V1 REAR LHS PANEL BONDING WIRE Figure SD-1C: GV30N Transmitter - Ac-Dc Power Stage, 1-Phase, 175-265 V ac (Sheet 1 of 3) VERSION 0.1 2014-11-01 SD-1C...
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GND (RACK 1) GND (RACK 2) SHEET 1 SHEET 2 GND (RACK 1) GND (RACK 2) POWER SUPPLY POWER SUPPLY MODULE 4B MODULE 8B S2190299 V1 Figure SD-2: GV30N Transmitter - Ac-Dc Power Stage (Sheet 2 of 3) VERSION 0.1 2014-11-01 SD-2...
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SPI STATUS DATA RS485 (RACK 3) - TO CONTROL/ MONITOR N/A (RACK 3) STAGE GND (RACK 3) SHEET 2 GND (RACK 3) POWER SUPPLY MODULE 12B S2190300 V1 Figure SD-3: GV30N Transmitter - Ac-Dc Power Stage (Sheet 3of 3) VERSION 0.1 2014-11-01 SD-3...
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SPI STATUS DATA RS485 (RACK 1) + FROM AC/DC POWER STAGE SPI STATUS DATA RS485 (RACK 1) - SHEET 2 N/A (RACK 1) GND (RACK 1) GND (RACK 1) S2190301 V1 Figure SD-4: GV30N Transmitter - Control/Monitor Stage (Sheet 1 of 2) VERSION 0.1 2014-11-01 SD-4...
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5kW REJ FAN 2 TACH SPLITTER & 5kW REJ LD FAN VOLTS - SHEET 1 SPLITTER & 5kW REJ LD FAN VOLTS - S2190302 V1 Figure SD-5: GV30N Transmitter - Control/Monitor Stage (Sheet 2 of 2) VERSION 0.1 2014-11-01 SD-5...
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POWER STAGE SHEET 2 LVPS (EXCITER B) LVPS RTN (EXCITER B) FROM RF POWER STAGE XMTR RF SAMPLE (B) W9P2 SHEET 3 S2190303 V1 Figure SD-6: GV30N Transmitter - RF Drive Stage, Single (Sheet 1 of 2) VERSION 0.1 2014-11-01 SD-6...
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FROM RF (XMTR LINK) SHEET 1 POWER STAGE XMTR RF SAMPLE (B) EXCITER B STREAMING DATA TX - W9P2 A1J1 SHEET 3 S2190304 V1 Figure SD-7: GV30N Transmitter - RF Drive Stage, Dual (Sheet 2 of 2) VERSION 0.1 2014-11-01 SD-7...
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2) RF POWER MODULE OUTPUT CONNECTOR J1 AND SPECIFIC 10kW COMBINER/FILTER ASSY CONNECTOR ARE BLIND-MATE CONNECTIONS. A5P1 A5P1 RF POWER RF POWER MODULE MODULE (SAME AS A8) (SAME AS A8) S2190305 V2 Figure SD-8: GV30N Transmitter - RF Power Stage (Sheet 1 of 3 VERSION 0.1 2014-11-01 SD-8...
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(SAME AS A20) S2190306 V1 10kW REJ LD FAN VOLTS + A1J4 10kW REJ LD FAN VOLTS - 10kW REJ LD FAN VOLTS - Figure SD-9: GV30N Transmitter - RF Power Stage (Sheet 2 of 3) VERSION 0.1 2014-11-01 SD-9...
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(SAME AS A36) (SAME AS A36) PART OF PART OF A5P1 A5P1 RF POWER RF POWER MODULE MODULE (SAME AS A36) (SAME AS A36) S2190307 V1 Figure SD-10: GV30N Transmitter - RF Power Stage (Sheet 3 of 3) VERSION 0.1 2014-11-01 SD-10...
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+12V 10.0K 10.0K MONITOR FAN 1A TACH MONITOR FAN STATUS MONITOR FAN STATUS RTN +12V BAT54HT1 BAT54HT1 6810 1.00M 1.00M 10.0K MONITOR FAN 1B TACH BAT54HT1 BAT54HT1 6810 1.00M NOTE: EXTERNAL SUPPLY MUST BE MONITOR FAN SUPPLY FUSED AT 6A OR LESS. VOLTS (EXT.
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#MAIN_SPI_ENABLE- +3.3V +3.3V #PS_STATUS_CS- MOSI U39:C R687 R688 R634 TO SHEETS 3,4,5,6,7,8,10 10.0K 10.0K U27:B MISO FROM SHEET 8 /MISO U39:D R632 MOSI_3V3 MOSI/ R633 TO SHEET 4 U27:C PS_STATUS_DATA(MISO) SCK_3V3 FROM SHEET 4 SCK/ R631 MODULE_FAN_PWM TO SHEETS 5 & 7 R226 1000 PROGRAM/...
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USB 1 W4P2 W4P1 +12V (SBC) CPU12V1 USB VBUS W4P1 USB D- USB4_5 USB D+ SINGLE BOARD +12V OUT (MONITOR) COMPUTER USB GND B1L1 B1P1 CPLD JTAG # SBC RESET - F_PANEL FAN VOLTS (+) RETURN USB 2 DSP JTAG W5P2 W5P1 MOTHERBOARD...
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PA V 470μF 470μF 470μF 470μF 470μF 470pF 0.01 0.01 PA BIAS 10.0K BAT54HT1 47.5K 1SMB5918B T2:A 5.1V Q1:A MRFE6VP61K25H 0.001 RF OUT RF DRIVE 100nH 15pF 36pF 0.001 82nH MRFE6VP61K25H Q1:B T2:B 0.001 S2110145 SHEET 1 OF 1 V1 0.001 Figure SD-36: NAPA31C...
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RF IN RF OUT 1000 ENBL RF_IN 0.01 ADL5501 FLTR 82.5 FWD PWR SAMPLE RF MONITOR VRMS R21 R25 22.1 2210 2210 82.5 82.5 ENBL RF_IN RF SAMPLE 0.01 68.1 22.1 2210 2210 ADL5501 FLTR REFLD PWR SAMPLE VRMS * DENOTES A MICRO-STRIP TRANSMISSION LINE OF SPECIFIC LENGTH AND CHARACTERISTIC IMPEDANCE. S2110126 V1 Figure SD-37: NAPP06/01 Output Power Probe PWB VERSION 0.1 2014-11-01...
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DS2:A DS2:B DS1:A DS1:B S2060273 V1 Figure SD-38: LED PWB (206-3060) VERSION 0.1 2014-11-01 SD-38...
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4-WAY RF DRIVE SPLITTER/ATTENUATOR EXCITER A RF DRIVE IN TO RF MODULE 3 H88-108-600 H88-108-600 10.0K 10.0K 10.0K 10.0K 10.0K 10.0K EXCITER RELAY 250W 250W TO RF MODULE 4 +15V SUPPLY 0.01 # EXCITER RELAY TO RF MODULE 1 CONTROL (B) - RF DRIVE H88-108-600 0.01...
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PA V 1 0.01 THRU MODULE SPLITTER/ INTERFACE PWB PA V 3 0.01 THRU PA V 1 PA V 3 PA V 2 PA V 2 0.01 PA V 4 THRU COMBINER (LHS) PWB PA V 4 0.028μH 8.2pF 0.01 THRU 0.01 1000pF...
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Figure SD-41: NAFP109B Output Power Probe and Sample PWBs VERSION 0.1 2014-11-01 SD-41...
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2 INPUT RF DRIVE REJECT SPLITTER PWB -4.8dB REJECT LOAD POWER 30kW RF DRIVE INPUT (IN) INT RF DRIVE POWER (0°) IPP-4265 250W 250W 250W -1.8dB 0.001 BAT54HT1 3320 250W 250W 250W 250W 250W INT RF DRIVE POWER (-90°) H88-108-600 250W 250W 250W...
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+15V +15V +15V (PART 1 OF 2) REJECT LOAD/ SPLITTER 10kW REJ LD FAN VOLTS + INTERFACE 10kW REJ LD FAN VOLTS + 10kW REJ LD FAN VOLTS + 10kW REJ LD FAN VOLTS + 10kW REJ LD FAN VOLTS - (PART 2 OF 2) 10kW REJ LD FAN VOLTS - 10kW REJ LD FAN VOLTS -...
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FAN V (A) 100K 10kW REJ FAN 1 TACH 10kW REJ FAN 1 TACH 10kW REJ LD FAN VOLTS + FAN V (A) + L111 L104 C102 L101 C100 L109 22pF 470pF 470pF 22pF 100pF 100pF FAN V (A) - 10kW REJ FAN 2 TACH 10kW REJ FAN 2 TACH L112...
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FAN V (A) 100K FAN V (A) + 10kW REJ FAN 1 VOLTS 100pF 100pF 2920L075/60 FAN V (A) - 10kW REJ FAN 2 VOLTS 100pF 2920L075/60 FAN V (B) 100K FAN V (B) + 5kW REJ FAN 1 VOLTS 100pF 100pF 2920L075/60...
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Nautel Part # 219-5179 UPS Interface Upgrade Kit Figure SD-47: UPS Interface Assembly (Optional) VERSION 0.1 2014-11-01 SD-47...
GV30N TROUBLESHOOTING MANUAL MECHANICAL DRAWINGS SECTION 4.5: MECHANICAL DRAWINGS This section contains mechanical drawings for assemblies of the transmitter. Dimensional drawings may be included. Refer to Table 4.5.1 on page 4.5.2 for an itemized list. Assembly detail drawings for assemblies and modules that have separate manuals are not included.
4.2.1. Follow the family tree branches to the block that contains the desired reference designation and Nautel nomenclature (e.g., NAPA31C Power Amplifier PWB ). Note the reference designations and Nautel nomenclatures of all higher assemblies in the path. Example: A8 NAA61B RF Module 1 -> A8A1 NAPA31B Power Amplifier PWB .
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GV30N TROUBLESHOOTING MANUAL MECHANICAL DRAWINGS Table 4.5.1: List of Mechanical Drawings Figure # Title MD-20 NAFP109B Output Power Probe Assembly MD-21 NAPI143/02 Remote Interface PWB MD-22 NAI25 RF Drive Splitter Assembly MD-23 NAX269 Reject Load/Splitter Interface Assembly MD-24 NAL17 4-Input Reject Load Assembly VERSION 0.1 2014-11-01...
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SINGLE BOARD CONTROLLER COMPUTER POWER SUPPLY DISTRIBUTION PWB TOP VIEW LED PWB FRONT VIEW REAR VIEW Figure MD-7: NAC118A Controller VERSION 0.1 2014-11-01 MD-7...
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R41 C56 M2190189 V2 Figure MD-9: NAPS49 Power Supply Distribution PWB VERSION 0.1 2014-11-01 MD-9...
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RF OFF RF ON REMOTE LOCAL (U/S) (U/S) (U/S) (U/S) REMOTE/LOCAL (U/S) RF OFF RF ON (U/S) (U/S) UI INTERFACE NAPI142 SER. M2190097 V1 Figure MD-10: NAPI142A/01 UI Interface PWB VERSION 0.1 2014-11-01 MD-10...
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OUTPUT POWER EXCITER/ PROBE PWB CONTROL POWER SUPPLY DISTRIBUTION PWB POWER AMPLIFIER TOP VIEW PRE-AMPLIFIER EXGINE PWB (NOT USED FOR ANALOG OPERATION) LED PWB FRONT VIEW Figure MD-11: NAE107A and NAE107A/01 Exciter Assembly VERSION 0.1 2014-11-01 MD-11...
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R123 (U/S) TP10 (U/S) LVPS IN R128 (U/S) CR11 R108 R109 R149 CR12 CR10 C122 R141 (U/S) R110 C117 GRID1 (U/S) C109 LVPS-B R142 C110 +5V-A +5V-B R111 +15V R112 C111 A B C D E F R113 PS DISTRIBUTION NAPS47 R114 +5V-A...
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V IN V BIAS M2190108 V1 Figure MD-13: NAPA35 Pre-Amplifier PWB VERSION 0.1 2014-11-01 MD-13...
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Figure MD-14: NAPA31C Power Amplifier PWB VERSION 0.1 2014-11-01 MD-14...
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OUTPUT POWER PROBE NAPP06 SER. M2110127 V1 Figure MD-15: NAPP06/01 Output Power Probe PWB VERSION 0.1 2014-11-01 MD-15...
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ASSY 206-3060 M2060067 V1 Figure MD-16: LED PWB (206-3060) VERSION 0.1 2014-11-01 MD-16...
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FRONT BACK Figure MD-17: NAI23A RF Drive Splitter/Changeover Assembly VERSION 0.1 2014-11-01 MD-17...
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COMBINER PWB (RHS) COMBINER PWB (LHS) FRONT REAR VIEW VIEW RIGHT-SIDE VIEW SPLITTER/ COOLING FANS (COVER REMOVED PA PWBs INTERFACE (B1 - B6) (A1 - A4) Figure MD-18: NAA61B RF Power Module VERSION 0.1 2014-11-01 MD-18...
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TOP VIEW 2-INPUT REJECT END VIEW Figure MD-19: NAL16 2-Input Reject Load Assembly VERSION 0.1 2014-11-01 MD-19...
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FRONT REAR A1, A4, A5 (U/S) (U/S) J1 (U/S) M2190112 V1 M2060070 V1 M2060072 V1 (U/S) M2060071 V1 Figure MD-20: NAFP109B Output Power Probe VERSION 0.1 2014-11-01 MD-20...
Low Voltage Power Supply. A module or modules used in the ac-dc power stage that generates LVPS. the low level dc supply voltage for the transmitter. A setting that controls power level, frequency and audio parameters. The GV30N allows you to Preset. pre-program multiple presets.
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GV30N TROUBLESHOOTING MANUAL LIST OF TERMS PAGE 4.6.2 VERSION 0.1 2014-11-01...
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