BEL 2150 Скачать руководство пользователя страница 8

 

Set up Menus 

 
 Depressing the SET key enters the set up menus. From each menu item the next can 
be accessed by again pressing the SET key. The values shown in each menu item can be 
changed using the nudge 

∧∨

 keys. Depressing any key other than these will exit the set up 

menus. If the menu item is entered and remains inactive for more than 30 seconds the set up 
menu will terminate. Three operational parameters can be adjusted as separate menu items 
these are: - 
 
 

Synth delay 

 
 This menu item will allow the audio delay used in the synthesis algorithm can be 
adjusted from zero to 20 milliseconds. 
 
 

Synth gain 

 This menu item will allow the gain of the synthesizer to be adjusted from zero to 2.0. 
 

AES reference source 

 This menu item will allow the AES reference source to be selected. The AES output 
from the unit will always be at the reference sample rate regardless of the AES input rate.  
The reference sources available are: - 
 
1. 

Internal.

 This will select the internal 48kHz clock as a reference.  

 

2. 

AES.

  This will select the external AES signal supplied to the rear panel as   

the reference. When a valid AES signal is connected  ‘aesref – locked’ appears on 
the LCD display. If a valid AES signal is not present the output of the unit is muted. 
An AES signal between 32kHz and 50kHz can be applied to the reference input but 
the delays values used in the synthesis algorithm are calculated on 48kHz sample 
rate.  

 

3. 

Word clock

.  This will employ the 48kHz word clock applied to the rear 

panel connector as the reference. If the incoming word clock is not valid the unit will 
automatically select the internal reference source. 

 
4. 

Video.

  This will use the video signal applied to the rear panel 

connector as a reference source. The unit will automatically detect PAL/NTSC video 
signals. If the incoming video signal is not recognised the unit will automatically select 
the internal reference. 

Содержание 2150

Страница 1: ...BEL Digital Audio Ltd 3 Horwood Court Bletchley Milton Keynes MK1 1RD UK Tel 44 0 1908 641063 Fax 44 0 1908 641063 Email sales beldigital com Web www beldigital com ...

Страница 2: ...h 5 Synth mode switch 5 Bypass switch 5 Lock switch 5 Fig 1 Bel 2150 front panel 6 Fig2 Bel 2150 rear panel 6 REAR PANEL DESCRIPTION 7 Analog outputs 7 Inputs 1 2 7 Inputs 2 3 7 Outputs 1 2 and 3 4 7 Ref inputs 7 Insert connector 7 RS422 Input 7 RS422 Output 7 Mains Inlet switch and fuse 7 Set up Menus 8 Synth delay 8 Synth gain 8 AES reference source 8 SYNTHESIZER OPERATION 9 ...

Страница 3: ...3 BEL 2150 SPECIFICATION 10 CONNECTOR DETAILS 10 Audio outputs 10 GPI inputs 10 ...

Страница 4: ...llowing controls 1 LCD display 2 Nudge Up down switches 3 Set Switch to enter set up mode 4 Left Mono source switch LED 5 Right Mono source switch LED 6 Synth Activate synthesizer switch LED 7 Byp Bypass switch 8 Lock Lock keyboard switch LCD display The LCD display has two main modes Default mode In this mode the LCD indicates the synthesizer mode the presence of a valid AES input the presence of...

Страница 5: ... the LDC will show an R and the right LED will be illuminated Synth mode switch Depressing this switch will activate the stereo synthesizer This switch will be overridden by any GPI inputs The change from normal to stereo synthesizer mode is carried out by a smooth cross fade over 100 milliseconds When this switch or GPI 1 is activated the LCD will show SYNTH STEREO and the synth LED will be illum...

Страница 6: ...6 Fig 1 Bel 2150 front panel Fig2 Bel 2150 rear panel ...

Страница 7: ...wer is removed from the unit the Inputs 1 2 connector is electrically connected to the Outputs 1 2 connector This facility provides the Bel 2150 with a degree of power fail recovery Ref inputs AES This XLR connector is provided to allow the use of an external AES reference signal VideoThis BNC connector is provided to allow the use of a video reference signal It automatically detects PAL NTSC Word...

Страница 8: ...ence sample rate regardless of the AES input rate The reference sources available are 1 Internal This will select the internal 48kHz clock as a reference 2 AES This will select the external AES signal supplied to the rear panel as the reference When a valid AES signal is connected aesref locked appears on the LCD display If a valid AES signal is not present the output of the unit is muted An AES s...

Страница 9: ... is applied to the stereo signal in order to reduce phase corruptions and to produce as accurate a reconstructed mono signal as possible The Bel 2150 has two mode of operation 1 Normal Depressing the BYP key or activating the GPI1 input enters this mode In this mode the incoming audio signal and channel status bits are copied to the two AES outputs The only processing carried out on these signals ...

Страница 10: ...one Jack carrying the converted audio from AES 1 2 output Analogue 4 differential analogue outputs converted from both AES outputs D A 24 bit better than 100 dB dynamic range level 6dB out for 9 dB digital in Max 15 dB internally adjustable Output Impedance 50Ω Mains input IEC connector fuse holder and switch 90 260 Vac 35Watt Weight 4 5 kg Dimensions 482w x 44h x 200 Connector details All XLR con...

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