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Nautel VS300 Скачать руководство пользователя страница 33

VS300 Pre-installation Manual

RF output requirements

Issue 2.0 2010-12-01

Page 6-1

Section 6:

RF output requirements

This section describes requirements associated with the antenna and RF cabling to be used with the
VS300 transmitter.

For detailed information about protecting the antenna system from lightning strikes, see Nautel’s

Recommendations for Transmitter Site Preparation Manual

.

Antenna feed line

The antenna feed line interconnecting the transmitter and the antenna system should be a suitably
rated coaxial cable. The RF output can be configured to accept a male N-type connection or a male
7/16 DIN connection.

Antenna system

The antenna system must present 50 ± j0 ohms impedance at the carrier frequency. The transmitter
will function at rated power while operating into a maximum VSWR of 1.5:1, after which the
transmitter begins to fold back the RF output (up to a VSWR of 3:1). Circuitry within the transmitter
will prevent damage to the transmitter from high VSWR loads.

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Содержание VS300

Страница 1: ...VS300 Transmitter Pre installation Manual Document VS300 PREINST Issue 2 0 2010 12 01 Status Preliminary...

Страница 2: ......

Страница 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...

Страница 4: ......

Страница 5: ...autions xv Description 1 1 Capabilities 1 1 Options 1 2 Pre installation tasks 2 1 Preparing for installation 2 1 Selecting a cabinet for the transmitter 2 3 Installing an antenna feedline 2 3 Physica...

Страница 6: ...3 Planning for control and monitoring 8 1 Front panel UI control 8 1 Digital inputs 8 1 Digital outputs 8 4 Analog outputs 8 7 Web based AUI control 8 9 External interlock 8 9 Parts and tools 9 1 Con...

Страница 7: ...VS300 Pre installation Manual Issue 2 0 2010 12 01 Page vii Online documentation 10 3 On site support 10 3 Training 10 3 Extended warranties 10 4 List of terms 11 1...

Страница 8: ...VS300 Pre installation Manual Page viii Issue 2 0 2010 12 01...

Страница 9: ...VS300 Pre installation Manual Issue 2 0 2010 12 01 Page ix Release control record Issue Date Reason 2 0 2010 12 01 Release 2 of product NARF64A and NARF64A 01...

Страница 10: ...VS300 Pre installation Manual Page x Issue 2 0 2010 12 01...

Страница 11: ...y telephone Nautel s customer support team will answer your questions and work with you to identify and resolve problems For 24 hour technical support call toll free at 1 877 628 8353 in USA and Canad...

Страница 12: ...User Group NUG The website includes a special section that customers can log into in order to access the Nautel customer newsletter product manuals frequently asked questions FAQ information sheets a...

Страница 13: ...ess of 72 volts capable of causing a fatal electrical shock are present on or near parts bearing this label After turning off the ac power always perform a measurement to confirm that the power is off...

Страница 14: ...n column of the Troubleshooting Manual s parts list s Do not cut crush or grind devices because the resulting dust may be hazardous if inhaled Unserviceable devices should be disposed of as harmful wa...

Страница 15: ...training courses covering the basic fundamentals of RF systems and transmitters and the operation and maintenance of the transmitter For more information about available courses and schedules go to t...

Страница 16: ...l does not offer first aid training since the hazards associated with high voltage and RF energy are not specific to the transmitter However the customer should provide first aid training to all per s...

Страница 17: ...ear the feedline antenna and tower At some sites these fields may cause biological effects including the heating of body tissues Intense fields can also create dangerous high voltages on ungrounded co...

Страница 18: ...tning protection The transmitter is designed to resist lightning strike damage However intense or repeated strikes could damage the transmitter We recommend that you install lightning suppression on t...

Страница 19: ...ncy The VS300 is broadband and can operate at any frequency in the FM broadcast band 87 5 108 MHz into a nominal 50 ohm unbalanced transmission line This design is ideally suited for all N 1 configura...

Страница 20: ...or a 7 16 DIN connector optional Digital IBOC operation The VS300 can be readily upgraded for hybrid or all digital IBOC operation Contact Nautel for information on this option 115 V ac input power U...

Страница 21: ...that is if the site is already set up for a transmitter proceed to Step 7 If you are upgrading a site verify the feedline the lightning protection systems and the ac power service 4 Install the ac pow...

Страница 22: ...termine whether DHCP will be used DHCP allows network IP addresses to be assigned automatically To use DHCP you must have a visible DHCP server on your network If you are not planning to use DHCP i e...

Страница 23: ...system has a suitably rated coaxial cable 2 Connect the shield of the antenna feedline coaxial cable directly to the station reference ground where it enters the building For more information about t...

Страница 24: ...VS300 Pre installation Manual Pre installation tasks Page 2 4 Issue 2 0 2010 12 01...

Страница 25: ...n includes the following topics Dimensions Clearances see page 3 2 Weight see page 3 2 Dimensions The VS300 transmitter see Figure 3 1 has the following dimensions Height 2 RU or 3 5 in 8 9 cm Width S...

Страница 26: ...t cabinet to ensure that you will be able to open all doors and access panels Ensure adequate space is available at the front of the cabinet to allow pulling out the transmitter for servicing fan filt...

Страница 27: ...ng see page 4 2 Heating see page 4 2 Air flow in the transmitter See Figure 4 1 The VS300 draws cool intake air through air filters in the sides The air circulates through the switch mode power supply...

Страница 28: ...4 C 104 7 F Cooling plant requirements Table 4 1 Cooling plant requirements Calculating BTU cooling requirements To determine the number of British thermal units Btu being generated per hour as waste...

Страница 29: ...tter through an IEC 60320 C20 power inlet connector U1 on the rear panel An ac line cord Nautel Part JN57 is provided in the transmitter s ancillary kit Voltage stability The ac power source s nominal...

Страница 30: ...ning hits the power source for example striking a transmission line near the transmitter site a significant induced current may flow towards the transmitter The goal of lightning protection is to rout...

Страница 31: ...t the site s ac service entrance ground is directly connected to the station reference ground outside the transmitter building If a surge protector is being used connect the transmitter s designated s...

Страница 32: ...VS300 Pre installation Manual Electrical requirements Page 5 4 Issue 2 0 2010 12 01...

Страница 33: ...tenna feed line The antenna feed line interconnecting the transmitter and the antenna system should be a suitably rated coaxial cable The RF output can be configured to accept a male N type connection...

Страница 34: ...VS300 Pre installation Manual RF output requirements Page 6 2 Issue 2 0 2010 12 01...

Страница 35: ...ncy and pilot phase control see page 7 4 Pilot sample output see page 7 4 Analog inputs The VS300 accepts the following analog inputs Left and right inputs An analog left right or monaural input left...

Страница 36: ...pin 8 SCA2 on pin 2 on pin 7 and shield on pin 3 The input impedance is 600 and the adjustment range is 0 to 12 dBu NOTE Transmitters are factory set for a 1 24 V rms 4 7 dBu SCA generator input level...

Страница 37: ...accept pre modulated SCA information The levels are nominally 2 8 V pk pk for 75 kHz carrier deviation and are adjustable between 0 5 V and 5 V pk pk The input impedance for each input is 10 k A thir...

Страница 38: ...ncy and pilot phase control The VS300 provides carrier frequency and pilot phase control from a precision GPS reference on the 10MHz IN BNC connector A1J4B between 0 5 V and 2 V pk pk sine wave input...

Страница 39: ...inputs and Digital outputs on page 8 4 or a LAN see Web based AUI control on page 8 9 Digital inputs You can connect to ten digital inputs which allow you to remotely control various operational char...

Страница 40: ...as the source for a control function s opto coupler connect pins A1J2A 10 and A1J2A 22 to pins A1J2A 9 and A1J2A 21 respectively Figure 8 1 Single Ended Input Selected When the digital input is confi...

Страница 41: ...egative output and the digital input Digital input connections Digital inputs 1 through 10 as required connect to the pins of REMOTE I O A connector A1J2A on the rear of the transmitter See Table 8 1...

Страница 42: ...and an open collector for a logic false condition Digital Input Function Input Pin 1 RF On Same as pressing the UI RF On button Tells the transmitter to provide RF power if possible Provide an active...

Страница 43: ...ol status of the transmitter Changes can only be made remotely if the transmitter is set to remote mode The local user s control of transmitter operation is limited unless the transmitter is set to lo...

Страница 44: ...r open collector indicates the RF output power is below the user configurable threshold default is 50 A1J2B 8 13 High Reflected Power Alarm Logic true condition indicates that the peak reflected power...

Страница 45: ...ct to pins of the REMOTE I O B connector A1J2B on the rear of the transmitter See Table 8 3 to determine the terminal associated with each analog output A ground shield connection is available on A1J2...

Страница 46: ...The coupler yields approximately 39dB 1 5 dB relative to the carrier level at the FM broadcast carrier frequency 88 108 MHz Note that there is a boost in the coupler response at higher order harmonic...

Страница 47: ...ed users when specific alarm or status conditions occur refer to the VS300 Operations and Maintenance Manual for details The transmitter s email service expects to be connected to an unsecure email se...

Страница 48: ...VS300 Pre installation Manual Planning for control and monitoring Page 8 10 Issue 2 0 2010 12 01...

Страница 49: ...de Parts supplied by Nautel see page 9 2 Parts not supplied by Nautel see page 9 2 Parts ordering see page 9 2 Module replacement program see page 9 3 Tools for installation see page 9 3 Contacting Na...

Страница 50: ...aps and some installation tools Documentation See VS300 transmitter manuals on page xi Parts not supplied by Nautel Some parts and materials required to complete installation are not supplied by Naute...

Страница 51: ...eplacement of failed modules with refurbished modules The replacement module is shipped to the customer as soon as the customer reports the failure The customer then returns the failed module to Naute...

Страница 52: ...VS300 Pre installation Manual Parts and tools Page 9 4 Issue 2 0 2010 12 01...

Страница 53: ...300 transmitter For support contact Nautel Customer Service and request assistance see On site support on page 10 3 Installation and commissioning service Nautel offers an installation and commissioni...

Страница 54: ...been made ready for the equipment and adequate protection against lightning and lightning induced transients has been provided The following test equipment has been made available at the site Two cha...

Страница 55: ...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 your day to day knowledge requirements S...

Страница 56: ...level troubleshooting component parts lists and wiring route sheets Extended warranties Nautel s standard 13 month warranty provides excellent coverage and satisfies most customers needs However if yo...

Страница 57: ...smitter is still covered by its original 13 month 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 a Nau...

Страница 58: ...VS300 Pre installation Manual Pre installation assistance Page 10 6 Issue 2 0 2010 12 01...

Страница 59: ...multiple shutbacks within a pre defined period Cycling ac power Turning off disabling then turning on enabling the ac power source DHCP Dynamic Host Carrier Protocol DSP Digital Signal Processing Used...

Страница 60: ...d permanent loss of RF output power Typically follows repeated cutback foldback or shutback events SPI Serial Peripheral Interface A synchronous serial data link standard that operates in full duplex...

Страница 61: ......

Страница 62: ...23 3900 or Toll Free 1 877 6NAUTEL 6628835 Canada USA only Fax 1 902 823 3183 Nautel Inc 201 Target Industrial Circle Bangor Maine USA 04401 Phone 1 207 947 8200 Fax 1 207 947 3693 Customer Service 24...

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