BW Broadcast RBRX1 Preliminary Manual

Dsp fm re-broadcast receiver
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RBRX1 Preliminary Manual
DSP FM RE-BROADCAST RECEIVER
Operational Manual
Version 0.90
www.bwbroadcast.com

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Summary of Contents for BW Broadcast RBRX1

  • Page 1 RBRX1 Preliminary Manual DSP FM RE-BROADCAST RECEIVER Operational Manual Version 0.90 www.bwbroadcast.com...
  • Page 2: 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 unit has a manufacturers fault within twenty eight (28) days then BW Broadcast will pay the freight at their discretion.
  • Page 3: Detailed Safety Instructions

    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. Page 5 BW Broadcast Technical Manual...
  • Page 4 Radio Interference Regulations of the Canadian Department of Communications. Le present appareil numerique n'emet pas de bruits radioelectriques depassant les limits applicables aux brouillage radioelectrique edicte par le ministere des Communications de Canada. Page 6 BW Broadcast Technical Manual...
  • Page 5 The RBRX1 has a real time clock for time and day mode selection, back panel preset trigger ports and more - each facility designed to make the unit flexible and easy to intergrate into any broadcast facility.
  • Page 6 Connections...
  • Page 7 RBRX1 S TATUS The main screen on the RBRX1 is mainly used for parameter adjustment, but when the unit is left idle for a few seconds it displays some useful status indications PST: Indicates the currently active preset. If the active preset is loaded because of an alarm or trigger, it is pre- fixed by '*'.
  • Page 8: Software Update

    OFTWARE PDATE The RBRX1 is designed to allow features to be added to the unit in the field via a software update mechanism. Software updates are available from www.bwbroadcast.com. To update your unit follow the procedure below. PDATING OFTWARE 1. Connect the RBRX1 to your computer using a USB Type A to USB Type B cable.
  • Page 9: Navigating The Menu

    NTERFACE The RBRX1 is designed to have an intuitive user interface. All of the units features can be accessed using the front panel capacitive sense buttons and wheel. AVIGATING THE Navigating the menu just requires the wheel in combination with the enter and exit keys. Use the wheel to select a menu and then press the enter key to open it.
  • Page 10 ACKUP UDIO The RBRX1 can provide playback backup audio in the case of the main feed failing. Audio can be loaded onto the unit over USB by saving a standard wavefile as "backup.wav" in the root of the USB disk.
  • Page 11: Quick Start

    UICK START 1. Install the RBRX1 into the rack. 2. Connect AC power to the unit, and turn on the power. 3. Connect an antenna to RF In connector. 4. Connect the appropriate audio outputs. 4. Set the frequency. REBROADCASTING USE 5.
  • Page 12 The exception to the rule is when the RBRX1 is feeding discrete left and right outs to a compressed audio STL. Bit rate reduction codec's do not cope with pre-emphasis very gracefully and artifacts will be generated.
  • Page 13 ROCESSING TRUCTURE The RBRX1 can be used as a high quality off-air reference receiver and as a rebroadcast receiver. The receiver is very sensitive and offers excellent signal selectivity. It is also capable of advanced digital signal processing to produce the best possible audio signal.
  • Page 14 Block diagram...
  • Page 15: Menu Structure

    MENU: DAYPARTS 5-8 TRUCTURE DP(X) ON/OFF DP(X) START TIME MENU: RADIO DP(X) TIME ON (LENGTH) DE-EMPHASIS IF BANDWIDTH MENU: ALARMS/TRIGGERS (X) REPRESENTS 1-4 MENU: AUTO IF MENU: TRIGGER INPUTS DEFAULT BANDWIDTH MENUS: TRIGGER INPUT(X) MINIMUM BANDWIDTH ACTION THRESHOLD EXTENSION PRESET MAXIMUM BOOST SOURCE MULTIPATH SPIKE SENS.
  • Page 16 RBRX1 P ARAMETERS The 'RADIO' menu contains all of the options and parameters relating to the control and conditioning of the radio signal. 'De-Emphasis' controls the de-emphasis setting of the received audio. Options are Off, 50 μS (Europe) and 75 μS (USA).
  • Page 17 'Analog' sets the volume of the analog input source. 'Digital' sets the volume of the digital input source. 'Radio' sets the volume of the radio. The 'RDS' menu contains all of the options and parameters relating to the RDS generator/repeater. RBRX1 Parameters...
  • Page 18 'Composite Clip' controls the drive into the composite clipper which effectively sets the amount of com- posite clipping. The trange of composite clipping is -0.5dB to +2dB. 'OUT 2 Source' sets which signal will be the source of the second BNC output. Options are MPX gen- erator or Pilot. RBRX1 Parameters...
  • Page 19 The 'SCHEDULE' menu contains all the controls for the dayparting (REAL TIME CLOCK) preset switch- ing. 'TIME' Sets the time and day of the RBRX1’s Real Time Clock. 'Sync to RDS ON/OFF: Controls whether the RTC is syncronised with time information which arrives over RDS.
  • Page 20 'DG' Sets the default gateway of the LAN port. 'PORT' Sets the port number of the webserver. 'Screen saver' This allows the time-out before the screensaver starts to be adjusted between 5 and 30 min- utes. 'Clicker' This allows the button click to be turned on/off. RBRX1 Parameters...
  • Page 21 ACTORY RESETS The factory presets in the RBRX1 should provide excellent results without any modification, but user adjustments to these presets allow some of the trade-offs (for example between bandwidth and noise) to be tweaked. V1 contains the following factory presets.
  • Page 22 Trigger Inputs The RBRX1 has four opto-coupled inputs which allow external signals to change the MPX source or the current preset. The inputs are activated by pulling the pin low. If more than one trigger is active at the same time and configured to produce conflicting behaviour, the lower trigger number gets priority (external triggers are higher priority than internal triggers).
  • Page 23 www.bwbroadcast.com...

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