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This manual was written by Andy Linton. © BW Broadcast Ltd. 2017. E&OE.

Encore products 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.

Email: [email protected]

‘Encore’ is a trademark of BW Broadcast Ltd.

Содержание DSPXtra Encore

Страница 1: ...DSPXtra Encore A U D I O P R O C E S S O R USER MANUAL www bwbroadcast com...

Страница 2: ...2 The DSPXtra AM Encore 3 Warranty 4 Safety 5 Front Rear Panels 6 User Interface 7 Installation Operation 8 System Configuration 9 Presets Configuration 10 Menu Structure 11 Routing and Block Diagram...

Страница 3: ...ackup audio device the same power supply the same audio board and the same DSP board is used in each one The rear panel is the same on every product This means wiring can be standardised installation...

Страница 4: ...e so it s simple to interface the whole Encore range of products with your common monitoring and telemetry system Every Encore product includes as standard Backup audio Events and Triggers based Telem...

Страница 5: ...on the 24 bit digital audio signal is passed through conditioning circuitry before being split into four bands by a phase matched crossover Each band is processed by an RMS leveler which corrects for...

Страница 6: ...e warranty does not cover any such modification adaptation irrespective of whether it was carried out properly or not Under the terms of this warranty BW Broadcast shall not be held responsible for an...

Страница 7: ...TTE The equipment will meet or exceed the following standards EN 60215 1996 Safety Requirements for Radio Transmitting Equipment EN301489 11 ERM EMC for Radio Equipment Part 11 Specific Conditions fo...

Страница 8: ...e connected to a power supply only of the type de scribed in the operating instructions or as marked on the appliance Grounding or Polarisation Precautions should be taken so that the grounding or pol...

Страница 9: ...t panel each using similar components and featuring the same method of operation Multicolour LED matrixes for level displays OLED displays for menu system and analysis Scroll knob LED ring and buttons...

Страница 10: ...oduct Analog audio inputs Pin 1 0v Pin 2 hot Pin 3 cold Analog audio outputs Pin 1 0v Pin 2 hot Pin 3 cold MPX inputs and outputs BNC Antenna inputs BNC AES EBU Digital input and output Pin 1 0v Pin 2...

Страница 11: ...ch case the buttons are illuminated with the following symbols ONLINE OFFLINE DECODE ENCODE INPUT 1 INPUT 2 Audio is passing through the unit and is being processed Input is connected to output and au...

Страница 12: ...ll time out after 5 seconds of inactivity or when the button is pressed again The delete text and accept text buttons are used when the virtual qwerty keyboard is being employed to add or modify text...

Страница 13: ...out changing The parameter setting will be shown on the OLED screen numerically and with a progress bar as shown below EDITING A TEXT FIELD When editing a text field such as the system name or a prese...

Страница 14: ...on 7 The DSPXtra AM Encore can be installed in a number of ways for example At a combined studio transmitter site At a studio location before a studio transmitter link At a transmitter site fed from a...

Страница 15: ...tone generator to set the output levels Set the output source in System Audio i o Outputs to tone set Amplitude to 60 then adjust the output level until your transmitter or modulation monitor reads 5...

Страница 16: ...ich both screens are extinguished and a heartbeat is played on the knob s LED ring to show at a glance that the unit is powered up The sleep state will also be automatically entered if no front panel...

Страница 17: ...e first four meters show the gain reduction of the multiband AGC There is one meter per stereo channel and the value is that of the largest gain reduction of either left or right channels Due to this...

Страница 18: ...nput and output settings as well as output routing selections Not present in all Encore products MPX generator Settings for the mpx composite generator Not present in all Encore products Events A comp...

Страница 19: ...PPM4 4 PPM5 8 PPM6 12 Similarly if your digital levels may meet but not exceed 10dBFS set dig ref level to 10 Outputs allows you to set output levels from each physical output and choose what source f...

Страница 20: ...rator If the mpx 1 or 2 output source is set to tuner 1 or 2 mpx the output level is fixed at 6dBu 8 2 MPX GENERATOR Not present in all Encore products This menu controls the on board stereo generator...

Страница 21: ...vents can be triggered from external sources you can use it to monitor other equipment in your facility even door open sensors intruder alarms in fact anything that can pull one of the four input pins...

Страница 22: ...than or in some cases equal to or not equal to 4 Next set the value the range here varies according to the trigger type 5 Next is the time to wait after triggering before the event is activated for ex...

Страница 23: ...now run pressing this forces an immediate update of system time via the ntp server host the ntp hostname e g pool ntp org or an IP address period How often an ntp time update occurs every 1hr 12hrs or...

Страница 24: ...utomatically set to no to define these settings manually DNS on to use the dns server derived above or off to manually enter a DNS server IP Manually enter he unit s IP number Subnet mask Manually ent...

Страница 25: ...ection to an external logging server and or log to file o via a serial connection RS232 Enable disable the rear panel RS232 serial connector and sets the baudrate to be used 8 7 ABOUT A display of uni...

Страница 26: ...e rest of the preset locations will become visible if you scroll down the list To the left of each preset name is the status block The current preset is shown highlighted if you scroll away from this...

Страница 27: ...bright F19 Classical jazz F20 Classic jazz bright The bright versions of each preset will trade off some loudness while accentuating the high frequencies 9 1 1 LOADING A PRESET To load a preset scroll...

Страница 28: ...name which is U1 for example The first part of the preset name is always the preset number Save to Allows the settings contained within the current preset to be saved back to itself not if it s a fact...

Страница 29: ...ection of audio The images that follow represent compression of the input waveform followed by limiting and then finally peak clipping 9 2 1 COMPRESSION Img 2 Compression reduces the dynamic range of...

Страница 30: ...with very clean source material After dynamic multi band re equalisation is performed poor quality source material will sound poorer when processed with the DSPXtra AM Encore We strongly advise agains...

Страница 31: ...table low pass filter The filter is adjustable from 4 kHz to 10 kHz in 500 Hz steps Out of band spectrum is reduced by more than 100dB The filter frequency roughly corresponds with the 18dB attenuatio...

Страница 32: ...sion set the filter to 10kHz 8 5kHz and 4 5kHz respectively The graph below shows all the low pass filter curves You can use it to determine the correct setting for the required bandwidth or mask in y...

Страница 33: ...ers while maintaining sonic transparency Multi band AGC Like the wideband AGC the DSPXtra AM Encore processes each band with RMS based levellers Each bands gain control processing function can be conf...

Страница 34: ...age This stage employs distortion controlled clippers to limit the peaks of the signal Distortion controlled clipping is the best method for preserving as much high frequency energy as possible import...

Страница 35: ...numbers refer to lower frequencies and will boost more mid frequencies as well as the high frequencies Higher numbers refer to higher frequencies and will put more emphasis on the higher frequencies t...

Страница 36: ...trols the average attack rate of the limiter The attack time can be varied between 1 fast and 10 slow The AVG attack control determines the dynamics of the dual time constant sys tem and how audio con...

Страница 37: ...finesse control is set to your taste MAIN CLIP DRIVE Controls the drive into the main output clipper that defines the systems peak clipping ceiling Adjustable over a 6dB to 6dB range LP FILTER Contro...

Страница 38: ...o account we recommend setting the filter to 30 Hz or higher if necessary 9 5 2 BASS ENHANCEMENT The frequency contouring effect of multi band audio processors often leaves the bass lacking a little T...

Страница 39: ...C together with the AGC control signal The effect of the control signal is clearly evident on the output audio waveform These scope shots help to visually illustrate the concepts under discussion The...

Страница 40: ...o more loudness will be obtained and all that will happen is you will generate higher levels of IM distortion and the sound will take on a busy packed texture You may also observe higher levels of hig...

Страница 41: ...energy falls away and the circuit goes into release the peak decay will dominate until it reaches a point where it hands over to the slower secondary time constant for a slower rate of decay The illus...

Страница 42: ...cay time sets the decay time for fast usually inaudible transients and the average attack time sets the ratio of peak to average control and defines the position of the platform that the peak circuit...

Страница 43: ...rom the other bands and making the punch distortion trade off 9 5 7 FINAL CLIPPER The final clipper is a sophisticated highly over sampled peak limiter that incorporates distortion controlling techniq...

Страница 44: ...fore these capacitors are not necessary when the unit is connected directly to the transmitter If you for some reason can t remove these capacitors then you can try to compensate for the tilt by using...

Страница 45: ...t menu Keep in mind that while operating the clippers asymmetrically might increase the loudness it will also increase odd harmonics and therefore overall distortion as well as the inter modulation di...

Страница 46: ...lipper drives will provide you with clean bass and crystal clear razor sharp high frequencies The choice is yours 9 6 1 MORE LOUDNESS Loudness can be increased in several ways Multiband AGC Increase t...

Страница 47: ...RE BASS LF We can obtain more bass in several ways Bass Enhancement Increase the peaking filter gain Increase the peaking filter Q factor Multi band AGC Increase the drive to the AGC band 1 Speed up t...

Страница 48: ...more gain to be applied to low level HF waveforms Consider force gating the AGC band 4 so the multi band AGC for band 4 is bypassed Multiband Limiters Increase the bands 5 and 6 limiter drive Slow do...

Страница 49: ...ssical jazz F21 Classical jazz bright U1 to U10 user presets each preset contents identical Name qwerty EQ bass peak freq 60Hz 120Hz bass peak q 0 4 4dB bass peak gain 0 6dB hf shape 0 10 hf gain 0 20...

Страница 50: ...12dB peak attack 1 10 peak release 1 10 compr attack 1 10 compr release 0 10 MIXER band 1 level 3 3dB band 2 level 3 3dB band 3 level 3 3dB band 4 level 3 3dB band 5 level 3 3dB band 6 level 3 3dB CL...

Страница 51: ...ut unit temp polarity HiZ low EVENT 1 8 active off on trigger analog input analog output digital input digital output temperature gpi1 gpi2 gpi3 gpi4 condition equal to not equal to or more than less...

Страница 52: ...user1 user2 user3 send test test WEB REMOTE active off on port 80 SNMP enable off on port 161 community read only off on name description TELNET active off on port 23 logging serial on off file on of...

Страница 53: ...11 1 Routing Block Diagram 11 Please see below for an audio RF and RDS data routing diagram This can help you understand the enormous capabilities of the Encore family of products...

Страница 54: ...11 2...

Страница 55: ...conversion 24 bit Audio monitoring output on jack 12dB maximum DIGITAL INPUT AES EBU Sampling rate 32 192 kHz MPX over AES ready Connector XLR balanced EMI suppressed Nominal input level 20 dBFS DIGI...

Страница 56: ...roadcast Ltd 2017 E OE Encore products 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 Email support bwbroadcas...

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