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Nautel NX50, Installation Manual

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NX50 Installation Manual

Preparing for installation

Issue 6.1  2021-07-13

Page 1-1

Section 1:  

Preparing for installation 

Before installing your NX50 transmitter, perform the following steps: 

1. Ensure that you have performed the pre-installation tasks described in the 

NX50 Pre-installation Manual

. 

2. Make sure that you received all the components. (Check your packing list.) 

3. Inspect all crates and packages for damage. Inspect the tip and drop indicators attached to 

the crates to determine if a crate has been tipped over or has been subjected to excessive 

shock (see 

Figure 1.1

).

Figure 1.1: Tip and Drop Indicators

4. Report any damage immediately to your Nautel sales representative and the carrier.

5. Move the crates as close as possible to the transmitter’s planned location. 

Summary of Contents for NX50

Page 1: ...NX50 Transmitter Installation Manual Document NHB NX50 INS Issue 6 1 2021 07 13 Status Standard...

Page 2: ......

Page 3: ...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 The comparisons and other information provi...

Page 4: ......

Page 5: ...3 1 Connecting the station reference ground 4 1 Connecting ac power 5 1 Adjusting the spark gap 6 1 Installing audio inputs 7 1 Planning complete 7 1 Routing cables and connecting audio inputs 7 1 Ins...

Page 6: ...by Nautel 10 2 Parts ordering 10 2 Module replacement program 10 2 Tools for installation 10 3 Pre installation Installation assistance 11 1 Pre installation consulting 11 1 Installation and commissi...

Page 7: ...lease control record Issue Date Reason 6 0 2019 04 01 Supports release 6 of hardware NARA53E and software version NX SW 4 7 or higher 6 1 2021 07 13 Section 3 Installing the Power Transformer changes...

Page 8: ...NX50 Installation Manual Page viii Issue 6 1 2021 07 13...

Page 9: ...on Manual 2 Make sure that you received all the components Check your packing list 3 Inspect all crates and packages for damage Inspect the tip and drop indicators attached to the crates to determine...

Page 10: ...nsmitter 7 Review any assembly notes or instructions contained inside the transmitter crates For sites requiring custom configurations the instructions provided with the transmitter replace the instru...

Page 11: ...ing the power transformer see page 3 1 Connecting the station reference ground see page 4 1 Installing control monitor wiring see page 8 1 Commissioning tasks see page 9 1 Perform operational tasks Co...

Page 12: ...NX50 Installation Manual Preparing for installation Page 1 4 Issue 6 1 2021 07 13...

Page 13: ...tance forklift etc and orsufficientmanpower position the cabinet in its final location 3 4 Install the ac disconnect switch in the selected location and label it TRANSMITTER EMERGENCYON OFFSWITCH Veri...

Page 14: ...hefrontdoorofthetransmitter removeandretainthe23M5screwsfromthehinged filter door see Figure 2 2 on page 2 5 Unlock and open the filter door to gain access to the inside of the filter section 8 If you...

Page 15: ...on page 2 10 Remove the packing material that has been used to protect it from vibration damage during shipping Close the rear door 13 Obtain four stiffener brackets Nautel Part 207 8296 qty 1 207 829...

Page 16: ...sue 6 1 2021 07 13 Figure 2 1 Installing Rear Plate and Removing Top Cover Plate Closed Air Cooling Remove the 9 M4 screws that secure the filter bracket Use same holes and hardware to install cover p...

Page 17: ...allation Manual Unpacking and positioning Issue 6 1 2021 07 13 Page 2 5 Figure 2 2 Opening the Transmitter Filter Door Remove the 23 M5 screws that secure the hinged filter panel Front Door Removed fo...

Page 18: ...Issue 6 1 2021 07 13 Figure 2 3 Installing Antenna Ground Switch Antenna Ground Switch Aluminum Rod secure to probe bracket with Four sets of M6 hardware packed with antenna ground switch antenna gro...

Page 19: ...cking and positioning Issue 6 1 2021 07 13 Page 2 7 Figure 2 4 Installing RF Output Connector 3 1 8 EIA Standard 3 1 8 EIA Nautel Part 203 6094 02 Four sets of M6 hardware hex screw split washer and p...

Page 20: ...king and positioning Page 2 8 Issue 6 1 2021 07 13 Figure 2 5 Installing RF Output Connector 4 1 16 EIA Standard 4 1 16 EIA Nautel Part 203 6094 03 Four sets of M6 hardware hex screw split washer and...

Page 21: ...13 Page 2 9 Figure 2 6 Installing RF Output Connector on Antenna Ground Switch Four sets of M6 hardware hex screw split washer and plain washer Standard 3 1 8 EIA Nautel Part 207 8322 01 Optional 4 1...

Page 22: ...NX50 Installation Manual Unpacking and positioning Page 2 10 Issue 6 1 2021 07 13 Figure 2 7 Location of Arc Detector Assembly Partial Rear View Rear Door Removed for Clarity Arc Detector Assembly A47...

Page 23: ...ckets Install stiffener brackets to create a frame as shown Remove and re use the hardware securing the exhaust duct grill to secure the brackets Single cabinet transmitter shown For multi cabinet tra...

Page 24: ...NX50 Installation Manual Unpacking and positioning Page 2 12 Issue 6 1 2021 07 13...

Page 25: ...end of the transformer One label identifies the tap number and the line to line voltage Another label identifies the tap All phases must be set to the same tap see also Figure 3 1 Figure 3 2 on page 3...

Page 26: ...line voltage tap layout 198 330 V Table 3 1 Three phase primary winding tap nominal voltages rms phase to phase 5 4 3 2 1 Load 3 Line 3 Load 2 Line 2 Load 1 Line 1 6 Load 0 Ac Power Source Voltage Ta...

Page 27: ...n see Figure 3 4 on page 3 5 Use the pryboard to take several small lift and slide steps to pry and skid the transformer into place 7 Locate the three pairs of 1 0 AWG wires provided to make the elect...

Page 28: ...U1 AC1 U1 AC2 and U1 AC3 to the Load 1 Load 2 and Load 3 terminals on the power transformer noting the labels on the wires see Figure 3 1 on page 3 1 or Figure 3 2 on page 3 2 CAUTION The NX50 Power...

Page 29: ...power transformer Issue 6 1 2021 07 13 Page 3 5 Figure 3 4 Power Transformer Installation 11 Locate the six 14 AWG wires 202 through 205 210 and 211 noting they are tyrapped near SCR rectifier assemb...

Page 30: ...side of the fuse and MOV assembly see Figure 3 7 on page 3 8 No connections are made on the right hand side Figure 3 5 NX50 Power Transformer Assembly Locations 13 Leave the back door open to allow f...

Page 31: ...0 Installation Manual Installing the power transformer Issue 6 1 2021 07 13 Page 3 7 Figure 3 6 NX50 Ac Input Terminals Ac Input Wiring via cable duct AC 3 AC 2 AC 1 Wiring to Transformer Line Termina...

Page 32: ...NX50 Installation Manual Installing the power transformer Page 3 8 Issue 6 1 2021 07 13 Figure 3 7 Fuse and MOV Assembly Wiring Locations XF1 2 XF1 4 U1 U2 U3 F2 U1 F1 XF1...

Page 33: ...ween the site s station reference ground and the transmitter s station reference ground stud 1 Ensure the reference ground conductor is at least 3 mm 1 8 in from the cabinet s exterior 4 Reinstall fla...

Page 34: ...e ground Page 4 2 Issue 6 1 2021 07 13 Figure 4 1 Safety Ground Stud Assembly Detail INTERIOR 1 M10 BRASS STUD 2 M10 NUT 3 M10 FLAT WASHER 4 M10 SPLIT WASHER 5 EXTERIOR REFERENCE GROUND CONDUCTOR 6 CA...

Page 35: ...6 on page 3 7 2 Verify that the station reference ground is connected to the safety ground stud assembly at the back of the cabinet see Section 4 Connecting the station reference ground on page 4 1 an...

Page 36: ...NX50 Installation Manual Connecting ac power Page 5 2 Issue 6 1 2021 07 13...

Page 37: ...ction of the NX50 Operations and Maintenance Manual for instructions on using the safety interlock switch which is provided by Nautel 3 Gain access to the RF output spark gap by opening the front door...

Page 38: ...X50 Installation Manual Adjusting the spark gap Page 6 2 Issue 6 1 2021 07 13 Figure 6 1 RF Output Spark Gap Location Locking Nut This side is stationary Top Cover and Filter panel removed for clarity...

Page 39: ...2021 07 13 Page 6 3 Table 6 1 Altitude Scale Factor Altitude ft Spark Gap Scale Factor multiply gap by 0 1 00 1 000 1 04 2 000 1 08 3 000 1 14 4 000 1 18 5 000 1 23 6 000 1 29 7 000 1 35 8 000 1 41 9...

Page 40: ...NX50 Installation Manual Adjusting the spark gap Page 6 4 Issue 6 1 2021 07 13...

Page 41: ...udio entry plate as follows Remove the left hand or right hand entry plate see Figure 7 2 on page 7 3 from the top of the cabinet Each is secured using two M4 screws and has a pre cut centered 1 4 inc...

Page 42: ...l if applicable 8 Connect the appropriate audio input cable s to the connector s shown in Figure 7 3 on page 7 4 Secure cables to the existing cabling and to the panel using arrowhead tyraps Nautel Pa...

Page 43: ...e 7 2 Audio Cable Entry Cable Entry Note Wiring access hole has a removable plate with a pre cut 1 4 inch dia hole Use a chassis punch tool e g Greenlee to create the desired hole size up to 2 inches...

Page 44: ...stallation Manual Installing audio inputs Page 7 4 Issue 6 1 2021 07 13 Figure 7 3 Audio Connections Exciter Panel shown A1 CONTROL INTERFACE PWB 10 MHz SYNC I Q AES EBU ANALOG AES EBU BALANCED ANALOG...

Page 45: ...ry holes are provided to accept audio input wiring see Figure 8 3 on page 8 4 2 Punch the appropriate size hole in the desired control monitor entry plate as follows see Figure 8 3 on page 8 4 Remove...

Page 46: ...raps Nautel Part HAC15 in the ancillary kit see Figure 8 4 on page 8 5 to locate tyrap anchor hole locations Exact connection location and configuration details are outlined in the Planning control mo...

Page 47: ...e 8 2 Passing Control Monitor Wiring Through Ferrite Toroids Part of GPS SYNC PWB A11A5 E2 shown configured for Nautel supplied 3 3 V antenna Configuration for 5 V antenna not supplied by Nautel Confi...

Page 48: ...igure 8 3 Remote Cable Entry Cable Entry Note Wiring access hole has a removable plate with a pre cut 1 4 inch dia hole Use a chassis punch tool e g Greenlee to create the desired hole size up to 2 in...

Page 49: ...ng Issue 6 1 2021 07 13 Page 8 5 Figure 8 4 Remote Interface Connections A4 REMOTE INTERFACE PWB Arrowhead tyrap anchor holes External 15V IN Analog Out puts Digital Inputs Digital Outputs External Sy...

Page 50: ...stalling control monitor wiring Page 8 6 Issue 6 1 2021 07 13 Figure 8 5 Web Interface Connection Connect to left hand LAN1 connector A62A1 nearest the D sub connectors Ethernet cable entry Secure to...

Page 51: ...Re install the air filter on the transmitter 2 Terminate the transmitter s RF output into a precision 50 resistive dummy load that is able to dissipate the RF power being applied to it 75 kW total re...

Page 52: ...gramming connect an analog audio generator preset to 1000 Hz at zero output turned off to XLR connector J12 on the control interface PWB or an AES signal generator to connector J10 or J11 on the contr...

Page 53: ...nsformer tap setting see Section 4 Connecting transformer taps load wiring on page 4 1 If the ac sample voltage is too high you will need to increase the tap voltage If the ac sample voltage is too lo...

Page 54: ...12 Increase the power to the desired setpoint use the method in Step 6 while monitoring the PA voltage Ensure the PA voltage remains within 10 of the following calculated value 13 Check the reflected...

Page 55: ...se the AUI to configure your Exgine parameters See the Operating the Transmitter section of the NX50 Operations and Maintenance Manual for detailed information 21 Use the local or remote AUI to config...

Page 56: ...d to J11 AES1 J10 AES2 or J12 balanced analog on the control interface PWB and that its output is preset to 1 000 Hz at a zero output level turned off 4 Turn on the audio signal generator and increase...

Page 57: ...axial hardline at the transmitter s output 3 Turn on the transmitter s ac power 4 Connect the desired modulation source to the transmitter see Section 7 Planning audio inputs on page 7 1 of the Pre In...

Page 58: ...nnector on the SBC see Figure 8 5 on page 8 6 Use one of the following two methods depending on whether you are automatically DHCP or manually static assigning an IP address If your network has a DHCP...

Page 59: ...e page 10 2 Tools for installation see page 10 3 Contacting Nautel You can reach Nautel to order parts or for technical assistance at Nautel Limited 10089 Peggy s Cove Road Hackett s Cove NS Canada B3...

Page 60: ...duit clamps All electrical power cables including conduit terminating devices and conduit clamps A plastic sheet or suitable equivalent used to cover the top of the transmitter during installation to...

Page 61: ...ude the following Digital voltmeter Philips screwdrivers sizes 1 and 2 Pliers Wire cutters Slot screwdriver 5 mm 3 16 inch Metric and Imperial socket set up to 24 mm 15 16 inch Metric and Imperial wre...

Page 62: ...NX50 Installation Manual Parts and tools Page 10 4 Issue 6 1 2021 07 13...

Page 63: ...with you to ensure that your site will be ready for the installation of your NX50 transmitter For support contact Nautel Customer Service and request assistance On site support on page 11 3 Installat...

Page 64: ...n against lightning and lightning induced transients has been provided The transmitter has been unpacked closely checked for any damage caused by shipping and then assembled The following test equipme...

Page 65: ...ness hours Atlantic time or Eastern time in North America requests sent by fax or email will be acknowledged within one working day Training Nautel s SBE certified broadcast training programs satisfy...

Page 66: ...Original Equipment Manufacturer Exercise of such warranty shall be between the Buyer and the Third Party 1 Properly qualified technical personnel must install maintain and repair the equipment in acco...

Page 67: ...ment when it is used in combination with other equipment not purchased specified or approved by Nautel d damages and performance limitations due to outside forces such as lightning excessive heat or c...

Page 68: ...ce on a 24 hour seven days a week basis Requests by other media fax or e mail will be responded to the next working day if received after Nautel s normal working hours Contact the appropriate field se...

Page 69: ...airs exchange Extended warranties Nautel s standard four year warranty provides excellent coverage and satisfies most customers needs However if you want extended coverage Nautel offers one and two ye...

Page 70: ...transmitter is still covered by its original four year warranty period you can contact Nautel by telephone fax mail or email with the model number serial number and date of purchase Once you purchase...

Page 71: ...transmitter circuitry Cutback AreductioninRFoutputpower causedbyatotalpowerlimitfaultortheoccurrenceof three shutbacks within a five second period DAC Digital to Analog Converter DAM Dynamic Amplitud...

Page 72: ...onal AM and Exciter B IBOC The NX50 allows you to pre program multiple presets Shutback AcompletelossofRFoutputpower causedbyanyoneofavarietyoffaults including high VSWR low B voltage high RF current...

Page 73: ......

Page 74: ...AUTEL 662 8835 Canada USA only or 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...

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