bel Digital Audio BM-AV2-E16SHD User Manual Download Page 17

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BM-‐AV2-‐E16SHD

2012

Version 1.0

Page 17

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-AV2-E16SHD

Page 1: ...BM AV2 E16SHD 2012 Version 1 0 Page 1 BM AV2 E16SHD 16 Channel Digital Audio Monitor User s Guide Version 1 0 18 12 2012 ...

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: ... Decoding AES inputs 7 Decoding SDI inputs 7 Using the PROGRAM switch 8 The Dolby mix down 8 Independent mode 8 Directing sources to speakers 8 Rear panel inputs 9 Rear panel outputs 9 Menu 10 Top level menu page 10 Line level output adjustment 12 Analogue output level 13 Dolby Information 14 Installation 15 Analogue audio inputs and outputs 16 Specifications 17 ...

Page 4: ...e machine An integral Dolby decoder can accept Dolby Digital or Dolby E from any AES input pair 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 thre...

Page 5: ...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 Four groups of four tri colour bargraphs with selectable meter types ballistics colour transition points Analogue line output and 8 analogue audio outputs eight pairs of AES outputs Audio Video status display Headphone con...

Page 6: ...will select which pair of audio inputs is applied to the Dolby decoder Mode select 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 aud...

Page 7: ...idual programs to be selected and their channels directed to bargraphs See the section entitled Using the program 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 b...

Page 8: ...e appropriate mix down to the buss The three separately encoded audio programs can be selected using the PROGRAM switch Clearly the mix down of the 1 signals will be a simple mono signal When the BM AV2 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...

Page 9: ...ilable The audio carried on the AES outputs are derived 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 Ch1 8 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 ...

Page 10: ...sly pressing the buttons under the bargraphs 15 and 16 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 AV2 E16SHD that can be adjusted 1 Level meters This section allows access to the bargraph colour break points and ballistics 2 Line levels The line output...

Page 11: ... 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 ...

Page 12: ...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 13: ...nel The 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 14: ...BM AV2 E16SHD 2012 Version 1 0 Page 14 Dolby Information The firmware version of the Dolby decoder card and MetaData information can be accessed from this menu ...

Page 15: ... an equipment tray Ventilation is by natural convection The image cannot be displayed Your computer may not have enough memory to open the image or the image may have been corrupted Restart your computer and then open the file again If the red x still appears you may have to delete the image and then insert it again ...

Page 16: ...1 0 Page 16 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 17: ...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 18: ...k 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 2U high Outline Dimensions 483 mm W x 256 mm D x 89 mm H Outline Dimensions 19 inch W x 10 inch D x 3 5 inch H Environmen...

Page 19: ...BM AV2 E16SHD 2012 Version 1 0 Page 19 ...

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