BW Broadcast TX300 Technical Manual
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BW Broadcast TX300 Technical Manual

Tx v3 series
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Summary of Contents for BW Broadcast TX300

  • Page 2: Table Of Contents

    1 The TX V3 series ............... 4 2 Warranty ................. 6 3 Safety ................7 4 Front and rear panels ..........10 4.1 Front panel: ..................10 4.2 Rear panel:..................11 5 User Interface ..............12 5.1 The input interface ................. 12 5.1.1 Navigating the menu ................
  • Page 3 7.7 Alarms ....................31 7.7.1 To set up an alarm pin as alarm: ............31 7.7.2 To set up an alarm as an analog output: ..........31 System ................... 32 7.8.1 Real Time Clock ..................32 7.8.2 Unit Information ..................32 7.8.3 Screen Saver .....................
  • Page 4 Congratulations on your purchase of the new BW Broadcast V3 transmitter! The V3 solid-state transmitter family provides today’s broadcaster with a no-compromise, cost-effective transmission platform with features previously only found in top of the line products. Incorporating field-proven technology, BW V3 transmitters deliver world-class performance, reliability and quality.
  • Page 5  GPS and 10MHz synch inputs for SFN use  Powerful 4-band audio processor  Dynamic RDS  LDMOS-FET based power amplifier  Monitoring, logging and control systems with web, email, SNMP and RS232 connectivity  Translator-ready with optional DSP-based rebroadcast receiver Please be sure to read this manual thoroughly before installation and use.

  • Page 6: Warranty

    If the product shows any defects within the specified warranty period that are not due to normal wear and tear and/or improper handling by the user, BW Broadcast shall, at its sole discretion, either repair or replace the product. If the warranty claim proves to be justified, the product will be returned to the user freight prepaid.

  • Page 7: Safety

    Specific Conditions for FM Transmitters), EN 302 018-2 ERM (Transmitting Equipment for FM Radio Broadcasting service) WEEE COMPLIANCE BW Broadcast Ltd is registered with Northern Compliance PCS number WEE/P3438PR/ SCH and has been issued with WEE/FA0268RX as its unique producer ID by the appropriate environment agency.
  • Page 8 This appliance been designed manufactured with high quality materials components that recycled reused. Electronic appliances are liable to contain parts that are necessary in order for the system to work properly but which can become a health and environmental hazard if they are not handled and disposed of in the proper way.
  • Page 9 Cleaning: The appliance should be cleaned only as recommended by the manufacturer. Non-use Periods: The power cord of the appliance should be unplugged from the outlet when left unused for a long period of time. Object and Liquid Entry: Care should be taken so that objects do not fall and liquids are not spilled into the enclosure through openings.

  • Page 10: Front Panel

    Front panel: OLED display – shows status and used for programming. Menu navigation knob – turn to highlight and press to select options. Push-buttons for menu navigation/selection, and RF and telemetry on/off. Left buttons are illuminated to show status. RF sample port – for connection to test equipment. LED indicators to show status.

  • Page 11: The Input Interface

    The input interface The V3 series has an intuitive interface based around a pushable scroll knob and six buttons: The buttons on the right of the scroll knob interact with the menu system, usually button 1 is ‘exit’, button 2 is ‘help’ and button 3 is ‘meters’. In some menus however their functions change.

  • Page 12: Display

    Display 5.2.1 Status box This selection of the display gives real-time information on the status of the transmitter. Frequency The programmed frequency of operation. When the transmitter is out of lock, such as at start-up, this will flash between half and full brightness. When the exciter is locked, it will show full brightness.

  • Page 13: Menu Box

    PA Temperature / power supply voltages / reverse power. This section displays the power amplifier temperature, the voltages of the power amplifier power supply and the reverse power. If FSK is enabled, this section will read FSK ACTIVE while the transmitter is keying.

  • Page 14: Quick Start

    Quick Start Important: Never power on an FM transmitter without a suitable antenna or dummy load connected. The V3 series transmitter’s protection circuitry will prevent any internal damage, but it is not advisable to run an FM transmitter without a load connected. The transmitter should be installed in a properly grounded rack or enclosure, the front and rear ventilation slots should not be blocked in any way.
  • Page 15 The transmitter’s frequency and power are both set from the RF Settings menu: Input selection, pre-emphasis, processing and the stereo parameters are set in the Audio Settings menu: Input source Selects analog or digital input to the transmitter’s built -in stereo encoder/audio processor.

  • Page 16: Examples Of Use

    Examples of use 6.2.1 Transmitter with external RDS coder and internal audio processing Place the transmitter in a well ventilated space. Connect the antenna to the RF output connector on the back of the transmitter. Connect the left and right program audio signals to the XLR input connectors on the back of the transmitter.

  • Page 17: Transmitter With External Audio Processor

    6.2.2 Transmitter with external audio processor 
 1. Place the transmitter in a well ventilated space. 2. Connect the antenna to the RF output connector on the back of the transmitter. 3. Connect the MPX output of your audio processor (or stereo generator) to the MPX1 input on the back of the transmitter, and in RF Settings, set MPX Source to MPX Input 1.

  • Page 18: Transmitter With An External Audio Processor And Rds (Inline Connection)

    6.2.3 Transmitter with an external audio processor and RDS (inline connection) 1. Place the transmitter in a well ventilated space.
 2. Connect the antenna to the RF output connector on the back of the transmitter. 3. Connect the MPX output of your audio processor (or stereo generator) to the MPX input of your RDS encoder.

  • Page 19: Transmitter With An External Audio Processor And Rds (Sidechain Connection)

    6.2.4 Transmitter with an external audio processor and RDS (sidechain connection) 1. Place the transmitter in a well ventilated space. 2. Connect the antenna to the RF output connector on the back of the transmitter. 3. Connect the MPX output of your audio processor (or stereo generator) to the MPX input on the back of the transmitter.

  • Page 20: Rf Setup

    RF Setup Note: Never power on an FM transmitter without a suitable antenna or dummy load connected. The V3 transmitter’s protection circuitry will prevent any internal damage, but it is not advisable to run a transmitter without a load connected. 7.1.1 Basic setup Set the desired Frequency.

  • Page 21: Audio Settings

    7.1.3 Synchronisation The V3 transmitter includes support for synchronizing with either a 10MHz, or a 1pps external timing signal, for use in a Single Frequency Network. The ‘Synchronisation’ sub menu contains the following items: 10MHz ref: Internal/External Determines whether to use the transmitter’s internal 10MHz ref, or to accept an external reference from, for example, a GPS receiver.
  • Page 22 Digital Ref Level: Set to the reference level of your facility, as above. For example, if you run your digital mixing desk so that it peaks at -10dBfs, set this to -10dBfs. The V3 transmitter features a 4-band audio processor built in as standard. The processor takes its input from the Digital or analog input connectors.
  • Page 23 Audio Trim: Allows fine trim of overall audio level, and right channel only, to compensate for L/R imbalance. Note that if you set MPX Source (in RF Settings) to be MPX Input 1 or 2, the exciter is fed directly from these rear-panel connectors, and the output of the audio processor and internal mpx generator is ignored.

  • Page 24: Input/Output

    7.3.1 MPX generator settings The mpx generator menu contains the following sub-menus: Inputs/Outputs MPX1 In Level Adjustment for external mpx input 1 reference level; MPX2 In Level As above, for mpx input 2; MPX1 Out Source Determines what signal is available on the MPX1 Output bnc connector: MPX (internally generated, including RDS if used), Pilot (the 19kHz stereo pilot), RDS (the internally generated RDS signal, Ext 1 and 2 –...

  • Page 25: Rds Settings

    7.4.1 RDS settings encoding: rds/rbds (rbds for the US, rds for rest of world) enter local PI code. enter default PS. stereo: off/on dynamic pty: off/on off/on off/on music/speech pty: default program type code. ptyn: allows entry of more specific pty name. Radio Text.
  • Page 26 audio trim: Fine adjust of the tuner’s audio level to account for discrepancies in the deviation level of the received signal. IF bandwidth: Manual setting of bandwidth, or ‘auto’. IF filter: on/ off. FMSI: FM Stereo Improvement - a complex, proprietary dsp- based processing system which improves stereo performance in less than perfect signal conditions.

  • Page 27: Triggers

    Triggers BW Broadcast V3 transmitters have a comprehensive monitoring and control system consisting of 3 alarms and 4 triggers. Pin 2 of the connector is hardwired to RF mute. Connecting this pin to ground will mute the transmitter. The alarms and triggers port can also be used to control the unit through a telemetry interface system.
  • Page 28 If you require email alerts, set Send e-mail to Yes. Make sure e-mails are setup correctly (Refer to the e-mails section in this manual). If Send e-mail is set to Yes, enter the (ON) Message that the trigger will send when fired.

  • Page 29: Alarms

    Alarms Alarms on the V3 transmitter indicate that a failure condition exists. They can be set to activate on modulation level, forward power, reverse power and PLL lock fail. Upon triggering, they will toggle the relevant pin on the GPIO/Parallel connector. They write to the system log and send an e-mail if required.

  • Page 30: System

    System 7.8.1 Time Allows setting of system time, and displays system uptime. 7.8.2 Unit Information Set Location – a brief description of the physical location of the unit. Set Contact – the name of the person who manages the unit. 7.8.3 Screen Saver Sets the time-out before the screensaver starts.

  • Page 31: E-Mail

    Once the unit has received the IP configuration information, it will display it in the following parameters: DHCP IP, DHCP SM, DHCP GW, DHCP DNS 1, DHCP DNS 2. 
 7.8.6 E-Mail The V3 transmitter can send e-mails to provide notifications of alarms or external triggers becoming active.

  • Page 32: Http

    7.8.7 HTTP BW Broadcast V3 transmitters provide a graphical web based interface for ease of use and control. This can be accessed by navigating to the IP address of the unit in any standard web browser. The Web Remote uses HTML5 and is mobile-friendly – so will display correctly on web-enabled cellular telephones or tablets.

  • Page 33: Log

    V3 transmitters offer many options for remote monitoring and control. All parameters available on the front panel are available remotely. To connect to the unit via RS232 connection, connect a standard serial cable between the transmitter and the PC, and use the following settings for the COM port: ...

  • Page 34: Diagnostics

    7.8.11 Logging to a file in internal memory If enabled, the system will keep logs of the last 31 days. These logs can be accessed through the web remote. An example section from a log file is shown below: 2016-04-22 11:40:06 DTLG >...

  • Page 35: Reboot

    7.8.14 Reboot This parameter will reboot the unit. 7.8.15 Factory Reset Performs a factory reset, setting all the parameters to its default value except for the network settings. All user changes will be lost. Web Remote The V3 transmitter provides a graphical web based interface for ease of use and control. This can be accessed by navigating to the IP address of the unit in any standard web browser.
  • Page 36 Status Bar: Displays the current status of the transmitter (frequency, FWD power in watts, REV power in watts, 0and peak deviation in kHz). Alarms and Notifications: Displays the status of the alarms and the number of times that the alarms were activated in the last 24 hours.
  • Page 37 Note that if the unit is switched off, It will not write to the log and it will not create a new log file for the number of days it is off, so the older log files in this case will correspond to previous logs (written several days ago). Another way of accessing the logs, which may be useful in some cases where the log file contents need to be copied, is by browsing to a specific URL: http://IPAddress/LX.log 
...

  • Page 38: Text Based Access (Telnet Or Rs232)

    7.10 Text Based Access (Telnet or RS232) The unit offers text based access via a local network or the internet through Telnet or serial RS232. 7.10.1 Commands The following commands are available: help This command (without any arguments) displays a list of the commands the unit understands.
  • Page 39 RF Settings Frequency Power (model dependent) 100% Modulation 10-250kHz MPX Source Internal/MPX Input 1/MPX Input 2 RF Mute on/off on/off FSK ID Power Scheduler Power W Start time hh:mm Finish time hh:mm Enable on/off Current time Select to se Synchronisation External 10MHz ref off/on Internal 10MHz trim...
  • Page 40 Generator Pilot Level 0-12% RDS Level 0-6% Comp Clip Drive 0-2dB Pilot Protection off/on RDS Encoder Data source local/tuner Encoding rds/rbds 4 digit hex alphanumeric, 8-char Dynamic PS on/off Stereo on/off Dynamic pty on/off on/off (enables remote activation) on/off music/speech 2 digit PTYN alphanumeric...
  • Page 41 System Time Date mm/dd/yyyy Time hh:mm:ss Uptime displays duration unit powered up Unit info Location alphanumeric Contact alphanumeric Screensaver Timeout 10s, 1m, 10m, 1h Screenlock off/on (lock code ****) Screen Saver type Normal/Stealth Users Username admin Password pass Ethernet DHCP yes/no Static IP nnn.nnn.nnn.nnn...
  • Page 42 Diagnostics Display Update firmware yes/no (immediate) Reboot yes/no (sure?) Factory reset yes/no (sure?) About Unit details display...

  • Page 43: Block Diagram

    Please see below for a system block diagram of the BW Broadcast V3 transmitter:...
  • Page 45 This page is intentionally blank. You could draw a nice picture of a flower here.

  • Page 46: Technical Specification

    Technical Specification Output Power TX150 TX300 TX600 TX1000 Nominal (watts) 1000 FM Analog Range 15-165 30-330 60-600 100-1050 RF Output 7/16" DIN 7/16" DIN 7/16" DIN 7/16" DIN connector Electrical * max power limited when at low voltage AC input V @ 5-...
  • Page 47 RF Harmonic and Spurious Meets or exceeds ETSI requirements Suppression Up to 1.5:1. Proportional foldback threshold from 1.5:1. Continued operation with VSWR operation foldback to infinite VSWR. Protected against sudden short and open-circuit conditions with mute to remove sustained arcing conditions, at all phase angles. Environmental Altitude 15,000 ft, 4,420m AMSL...
  • Page 48 External 1PPS BNC, unbalanced, 50 ohms TTL level clock input RF sample output 1 x SMC front panel -50dB. Not suitable for harmonic measurements Remote I/O Ethernet port RJ45 100Mb/s ethernet/IP rear-panel for remote control RS232 Telnet control DB9 female standard remote control I/O with user-selectable command inputs Parallel GPI/O and status outputs active low, 5v 100mA.
  • Page 49 This manual was written by Andy Linton. © BW Broadcast Ltd. 2017. E&OE. The TX V3 series transmitters are manufactured in the UK by BW Broadcast Ltd. IO Centre, Croydon Road, Croydon, CR0 4WQ, UK. Tel: +44 208 253 0290. US toll-free: 1-866 376 1612.

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Tx1000Tx150Tx600

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