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bel Digital Audio BM-AV1-E16SHD, User Manual

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BM-­‐AV1-­‐E16SHD   

   

2012

 

Version   2.1   

Page   18   

 

 

Specifications      

 

Audio inputs 

 

 

Digital   

 

  

AES3-id 8 x 75 ohm

 

 (BNC connector). Sample rate 44.1/48 kHz.    

Analogue   

 

 

8 differential (25-way ‘D’ connector). Cl15 dB 

 

Audio outputs 

Digital    

 

 

AES3-id 8 x 75 ohm (BNC connector) sample rate 48 kHz. 

Analogue  

8 differential audio channels, level adjustable (25-way ‘D’ 
connector). 

Line output 

Copy of speaker outputs, level adjustable on 2 x XLR3M 
connectors. 

Analogue noise  

  

Noise+THD: -108 dB w.r.t clipping  

Analogue frequency response: 20 Hz to 20 kHz ±1dB   
 

Video inputs 

Video format     

 

SDI  SD, HD or 3G 

Video output

   

 

 
1 SDI active loop-through (BNC connector). 

 

Main drive amp 

  

 

 
Noise +THD -80dB w.r.t. maximum output.  

  

Speaker driver units  

Peak acoustic level (@2ft)  

100 dB SPL 

Shielding  

 

 

Magnetic  

 
 

 

Summary of Contents for BM-AV1-E16SHD

Page 1: ...BM AV1 E16SHD 2012 Version 2 1 Page 1 Manual BM AV1 E16SHD 16 Channel Digital Audio Monitor User s Guide Version 2 1 14 01 2013 ...

Page 2: ...theless supplied for information purposes only and does not constitute any form of warranty or guarantee All trademarks acknowledged The information in this document is subject to change without notice Bel Digital Audio Ltd Unit 3 Horwood Court Bletchley Milton Keynes Bucks MK1 1RD United Kingdom Tel 44 0 1908 641063 Email info beldigital com Web www beldigital com ...

Page 3: ...oding AES inputs 7 Decoding SDI inputs 7 Using the DOLBY MIX switch 8 The Dolby mix down 8 Independent mode 8 Directing sources to speakers 8 Presets 9 Rear panel inputs 10 Rear panel outputs 10 Menu 11 Top level menu page 11 Line level output adjustment 13 Analogue output level 14 Dolby Information 15 Installation 16 Analogue audio inputs and outputs 17 Specifications 18 ...

Page 4: ...ir or from any of the SDI embedded audio channel pairs Dolby E is implemented using two operational modes Independent where all eight channels are available and Dolby Mix Down or Program mode where a selected mix of channels is available according to the encoding used An example would be 5 1 1 1 where three programs are available the 5 1 mix down and the two additional programs 1 and 1 In independ...

Page 5: ... Two auto sensing SD HD 3G inputs with loop through Dolby Digital or Dolby E decoder Dolby mix down program select switch Custom channel mix downs for de embedded audio channels and Dolby independent mode Two groups of four tri colour bargraphs Analogue line output and 8 analogue audio outputs eight pairs of AES outputs Headphone connector with speaker mute ...

Page 6: ...pplied to the Dolby decoder Dolby Mix This control will set the way in which the monitor will treat the incoming audio The PCM position will treat the current audio input as straight PCM encoding and reproduce it unprocessed on the 16 available channels The IND position will decode Dolby encoded information from the selected Dolby pair and produce 8 audio outputs These can then be mixed as require...

Page 7: ...idual programs to be selected and their channels directed to bargraphs See the section entitled Using the DOLBY MIX switch for more information about the Dolby E monitoring features available Decoding AES inputs Rotate the CHANNEL PAIR switch to select the input carrying the Dolby encoded audio The unit will automatically detect and decode the Dolby signals and display up to 8 audio signals on the...

Page 8: ... down to the buss The three separately encoded audio programs can be selected using the DOLBY MIX switch Clearly the mix down of the 1 signals will be a simple mono signal When the BM AV1 E16SHD is in any of the P1 to P8 program select modes or Dolby Down Mix modes the stereo audio available on the internal buss is sent to the left and right speakers and to bargraphs 1 2 Independent mode All of th...

Page 9: ...2 1 Page 9 Presets Three presets are provided these will allow front panel settings to be stored Each preset can be selected using the button under the video display and they automatically retain their last routing configurations ...

Page 10: ...ved from the currently selected input source analogue AES or SDI In effect these audio outputs are a copy of the signals shown on the unit s bargraphs The analogue outputs are derived from the lower 8 inputs They can thus be a copy of the AES inputs two of the currently demuxed SDI groups or the eight decoded Dolby signals Two line outputs are provided which carry the same audio as the speakers Th...

Page 11: ...an be adjusted To go back one step in the menu press and hold the encoder for longer than 1 second Tip Simultaneously pressing the buttons under the bargraphs 7 and 8 will completely exit the menu The characteristics that can be adjusted in the menu are shown below Top level menu page The top level of the menu carries the main areas of operation of the BM AV1 E16SHD that can be adjusted 1 Status d...

Page 12: ...bargraph changes from amber to red can be adjusted here Bargraph 16 is forced to full scale to allow easy control of the colour transitions 3 Ballistics The scales and dynamics of the bargraphs can be selected here The options are AES DIN VU and BBC The appropriate scales should be affixed to the front panel 4 Analogue offset When an analogue input is selected and the bargraph ballistics are AES t...

Page 13: ...rear panel The level of these can be adjusted from this menu 1 Line level The line output level can be fixed or controlled by the front panel volume control and this can be selected here 2 Fixed line level When fixed output level is selected its level can be adjusted here 3 Line mute The line outputs can be muted here or the mute can be slaved to the front panel volume control ...

Page 14: ...he level of these can be adjusted here 1 Analogue level control The analogue output level can be fixed or controlled by the front panel volume control from here 2 Fixed analogue output level When fixed analogue output level is selected its level can be adjusted here 3 Analogue output mute The analogue outputs can be muted here or the mute can be slaved to the front panel volume control ...

Page 15: ...BM AV1 E16SHD 2012 Version 2 1 Page 15 Dolby Information The firmware version of the Dolby decoder card and MetaData information can be accessed from this menu ...

Page 16: ...BM AV1 E16SHD 2012 Version 2 1 Page 16 Installation The BM AV1 E16SHD is designed to be installed in 19 bays on an equipment tray Ventilation is by natural convection ...

Page 17: ...2 1 Page 17 Analogue audio inputs and outputs Pi n 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 Description A 1 A 1 GND A 2 A 2 GND A 3 A 3 GND A 4 A 4 GND GND GND A 5 A 5 GND A 6 A 6 GND A 7 A 7 GND A 8 A 8 ...

Page 18: ...nalogue 8 differential audio channels level adjustable 25 way D connector Line output Copy of speaker outputs level adjustable on 2 x XLR3M connectors Analogue noise Noise THD 108 dB w r t clipping Analogue frequency response 20 Hz to 20 kHz 1dB Video inputs Video format SDI SD HD or 3G Video output 1 SDI active loop through BNC connector Main drive amp Noise THD 80dB w r t maximum output Speaker ...

Page 19: ... 7 to mark 1 Attack time 10 mSec Fallback 2 85 Sec from mark 7 to mark 1 VU Overall dynamic range 23 dB 3 to 20 dB Attack time 300 mSec Fallback 300 mSec AES EBU Overall dynamic range 60 dB 0 to 60 dB Attack time 1 mSec Fallback 1 5 Sec per 20 dB decay Dimensions 19 Rack Mount 1U high Outline Dimensions 483 mm W x 256 mm D x 44 3 mm H Outline Dimensions 19 inch W x 10 inch D x 1 75 inch H Environm...

Page 20: ...BM AV1 E16SHD 2012 Version 2 1 Page 20 ...

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