4a606c3b11c766110_manual.
Contents
1. REY FEERT BE REII 4 bti NAT 4 e A T FERZ KEY PREFE 3 DIAGRAM 2 SET UP MENUS SERIAL CONTROL The BEL 6110 can be controlled by the editing equipment be sending commands down a serial communication line The serial communication protocol must conform to the RS422 standard as implemented by SONY The BEL 6110 memory will appear to the user exactly like a section of tape which has been pre striped The stripe can be set to start on the hour from to 23 hrs and the length of recording which can be accommodated will depend on the size of the installed memory 42 84 or 168 seconds for stereo The Window provided by the BEL 6110 memory can be recorded and replayed in the same way as magnetic tape If recording is attempted outside this window then no recording will take place and no record flags will be returned by the equipment The serial mode is selected from the Set Up menu The SONY9 protocols shown in Section 7 are accepted by the BEL 6110 The unit will identify itself as a BVW 75 recorder This particular tape recorder system was selected because it responds to a set of commands similar to those supported by the BEL 6110 However the BEL 6110 does not exactly mimic this tape recorder In particular the BEL 6110 is a purely electronic device as such it is not subject to the inertial effects invariably present in any mechanical tape recorder To the user the response of2. a REAR PANEL LAYOUT BLOCK DIAGRAM TROUBLESHOOTING APPLICATION NOTES Introduction Typical Applications SERVICING INFORMATION CONTENTS 19 20 21 22 23 24 26 BEL 6110 Digital Audio Lay off Recorder DESCRIPTION The BEL 6110 is a device that will store audio and time code information in a digital form This information can then be replayed synchronised to an incoming time code The basic unit contains an 8 Mbyte circular memory which can record up to 42 seconds of stereo audio This memory can be increased to a maximum of 32 Mbyte providing recording times of 84 secs and 168 secs respectively The description below refers to the 8 Mbyte version but it also applies to all versions that differ only in recording times The BEL 6110 will initially fill its memory in a linear way and provide a warning on an LED when the recording is within 5 Seconds of the end of this memory If recording is allowed to exceed the memory capacity the unit will enter a circular mode where only the most recent 42 Seconds of audio is retained In the follow mode recording is only allowed in the presence of a valid time code When the same time code is subsequently applied to the unit the audio is replayed in synchronism The operation of the unit can be controlled by two push switches The status of the BEL 6110 is displayed on LED indicators and a liquid crystal display LCD These controls and indicators are duplicated on a remote control unit Se
3. Vnum ON IL 13774 id Ud CLA eo I 31 4 TROUBLESHOOTING The Bel 6110 is designed and constructed to ensure a long and fault free life but if a problem does occur the following guidelines are provided The unit is constructed using 2 main printed circuit boards and 7 sub assembly boards The 2 main PCB s carry the processor DSP circuits CPU and the analog digital input output systems ADAREF Seven smaller PCB s carry Analog I O Protection and EMC suppression Digital AES EBU protection and EMC suppression Time code remote and RS422 protection and EMC suppression 1 The keyboard interface 2 The LCD interface 9 A system power supply 4 5 6 7 Memory module or modules All of these printed circuit boards can be rapidly replaced see servicing section If the outline fault finding suggestions which follow are unsuccessful contact your BEL distributor or the main BEL distributor who will advise you and arrange for the unit to be repaired or provide replacement PCB s Fault Causes Action Dead unit Power supply Check fuses in the IEC and supply connector then fault PCB check fuses amp connectors on the power supply Only fan or Power supply Check fuses on the power supply PCB backlight on fault No record In follow mode Check if in follow mode there is valid timecode at with no timecode input timecode input on rear panel No audio output No recor
4. application 1 Typical configuration for two machine stereo editing in manual lay off mode Figure 1 At the required edit point the Master VTR will drop into and record the video from the Playback or any other video source The audio usually requires different treatment such as fading out over a few seconds while the audio from the new scene is faded To accomplish this a section of audio is recorded on the Bel 6110 This should start before the edit point and continue for as long as the fade out is required The Bel 6110 is put into Record at the appropriate time whilst monitoring the Master VTR The Master VTR is stopped at the end of the required section together with the Bel 6110 The Bel 6110 will then drop into the Play Ready mode ready for the VTR to be rewound The recording may be checked if required by pressing the Play button Whenever the Master VTR plays back the relevant section the Bel 6110 will replay the audio in complete synchronisation This can then be mixed with the new audio from the Playback VTR and re recorded onto the Master VTR The memory of the Bel 6110 can be recorded and replayed in the same way as a continuous loop of magnetic tape When the installed memory is full recording may continue indefinitely However only the last section of programme prior to the Stop command will be available for playback The duration of this section depends upo
5. immediate acceptance of the Bel 6000 by the broadcast industry and the considerable numbers now in daily use is simple the unit is so fast and easy to use that is saves time and hence costs An easy way of understanding the operation of the Bel 6000 is to think of it as a 3 track tape recorder such as the Nagra T which it has largely replaced as a lay off recorder in VT editing which records audio signals in solid state memory rather than tape with two tracks for audio and the third for timecode The Bel 6110 is the latest CE marked version of the widely used Bel The principle of laying off audio with the Bel 6110 is similar to that of a conventional tape recorder but there are many advantages For example 16 bit digital audio ensuring little or no degradation of sound quality AES EBU standard digital format with video AES EBU or word clock reference Simple two button remote operation or external automatic editor control Instant timecode lock Constant updating of recording last n seconds of programme always available No moving parts to clean or replace Notapes to purchase load or rewind instant start stop lock No generation loss Small physical size standard 1U rack mounting case with multifunction display 23 Typical Applications The Bel 6110 is a highly versatile unit and is used worldwide many different ways The following shows some of the most popular
6. the BEL 6110 appears to be instant The main differences in operation can be summarised as follows a Jog Shuttle and DMC Each time a request to move one frame in either direction is detected the BEL 6110 will respond by playing a 0 1 second burst of audio in the forward directional normal speed This facility eases the precise location of any required sound b Cue up with DATA and PRE ROLL These macro commands operate considerably faster on the BEL 6110 than is possible on any tape based system The cue point or pre roll point is found in a maximum of 60 microseconds from receipt of the relevant command c Transport commands Commands such as Stop Rewind Fast Forward etc become effective immediately they are received No delay will be apparent since there is no mechanical inertia in the system STRIPING The memory in the BEL 6110 is striped when any roll mode is selected The stripe setting is in one hour increments from 0 to 23 Hrs Any audio information stored in the memory at this time is preserved but the associated time code is over written LCD DISPLAY This is a Supatwist LCD display with LED backlighting It is a multi function display showing the set up modes and the current status of the unit Record Unit in record mode recording audio and time code follow mode No readable code Unlocked replay of audio Unit locked to time code in replay Reading time code before stored audio Reading time code a
7. CATION TV system Frequency response Dynamic range Signal to noise ratio Distortion Conversion accuracy Sampling rate Inputs Outputs Digital I O Reference RS422 serial port Supply Voltages Supply Currents Fuse Ratings semi delay PAL or NTSC 20Hz 20kHz 1dB 96dB 944 r m s 20 20kHz less than 0 015 at 1kHz A D 18 bit Delta Sigma 64 x oversampled D A 20 bit 8 x oversampled 48 kHz Internal reference Electronically balanced 25kQ Electronically balanced 509 Max drive capability 22dBu factory set for 18dBu Input AES EBU 32 48kHz nominally 48 2 Output AES EBU 48kHz 1 Internal crystal 48 2 2 Audio Input Locks to AES Input frequency 3 External AES EBU 48kHz 4 External Word Clock 48kHz TTL 5 External video PAL NTSC auto select 1 Vpk pk 38 4 kbaud 8 data bits 1 stop bit no parity SONYO9 protocol 110 120VAC and 220 240VAC 50 60Hz 300MA 115VAC 150MA 230VAC 500MA 115VAC 250MA 230VAC 15 BEL 6110 RS3422 IMPLEMENTATION LIST 00 0C 00 11 00 1D 20 00 20 01 20 02 20 04 20 05 2X 11 2X 12 2X 13 20 20 2X 21 2X 22 2X 23 20 30 24 31 20 54 20 55 20 60 20 61 20 64 20 65 44 04 44 05 40 10 40 11 41 30 44 31 44 32 41 33 41 34 41 35 41 36 61 0A 61 0C 60 10 60 11 61 20 60 30 60 31 60 36 Local Disable Device Request responds with BVW 75 21 25 Local Enable Stop Play Rec Standby Off Standby On Jog Fwd Var
8. EF RIGHT LEFT MES Figure 4 RIGHT LEFT 17 0oranv 1411910 2 4 lt lt E 2 O oc LL 5295 96 894 uondo 9L 5295 gp vg uondo 8 5295 vc cv 5 91915 Ul 91015 3431 7 0119 440 AYT1 OLGNY 1 11914 ALIAILISNAS LNANI 541845 0009 18 1431 5 L 1H9IH Lh 1411 1H9IH sindino 3 334 n83 S3V 60000 83 53 1711910 334 iiu 0301 IHL NI 3QVIA 20154 22 5 1 319 310 0038 otc 0000 00000 5 22 e 22 en 505 e 22 He 22 23 e 22 2202 255 255 25255 SONS 52 255 255 255 255 255 55590 255 25505 2555 2555 255 9000 22022 5 25 5 25 25 25 05 25 00 252 00 2505 2H09 05 8 2 670 ASLL OLL s e vsz o 1082 022 9 3801 CHE ANdNI 4 3514 440 N0 19 REAR PANEL LAYOUT BLOCK DIAGRAM pe Wi Did 20 SHIADM ina tw me ES E Do EIH 2909 Dl m
9. Fwd Shuttle Fwd Rewind Jog Rev Var Rev Shuttle Rev Pre Roll Cue Up With Data Anti Clog Timer Disable Anti Clog Timer Enable Full EE Off Full EE Off Edit Off Edit On Time Code Preset U Bit Preset In Entry Out Entry Edit Preset Pre Roll Time Preset Tape Audio Select Servo Ref Select Head Select Colour Frame Select Timer Mode Select TC Gen Data Sense Current Time Sense In Data Sense Out Data Sense Status Sense Edit Preset Sense Pre Roll Time Sense Timer Mode Sense 16 DETAIL OF SWITCHES ON FRONT REC PLAY PS DEFAULT LCD REC LOCK BHD Figure 2 SET PAGE 00 2 STOP 2 30 19 lt Current Timecode REAR PANEL VIEW ON OFF FUSE POWER INPUT Figure 3 SMPTE INPUT 2 20 55 SZ 227 2 5 gt 5 22 ete 2 22222 2 2 555050 lt 2 lt 22 22 55509 2502 22 22 22 2 50 lt 2 2 2 222 2 2 2 2 2 2 2 lt 2 5 2 22 2 2 2 2 22 gt gt 5 c 2 550 250209 2 te lt 2 FUSE RATING 220 230 0 25A a s 110 115V 0 5A a s 50 60Hz ale um PO MADE IN THE EC DIGITAL AES EBU a a OUTPUT AES EBU R
10. Operators amp Service manual Del DIGITAL AUDIO Model 6110 Digital audio lay off recorder Version 1 0 BEL Digital Audio Ltd Invicta Works Elliott Road Bromley Kent BR2 9NT UK Tel 44 0 20 8460 7299 Fax 44 0 20 8460 0499 Email sales michael stevens com Web www bel digital com BEL 6110 Lay off Recorder V1 0 The Version 1 0 BEL 6110 is a CE marked programmable version of the popular BDE 60008 It provides for more comprehensive control via an RS422 serial link and allows various operating parameters to be adjusted These settings are retained on power down This version has further enhancements to the AES digital audio synchronisation facilities enabling the digital output to be referenced to AES video or word clock sources DESCRIPTION OPERATION AND FRONT PANEL CONTROLS Input Sensitivity Record Switch Record switch in Serial Mode Play Switch Play Switch in Serial Mode A Set and Page Keys Serial Control a JOG SHUTTLE and DMC b Cue up with DATA and Pre roll c Transport commands Striping LCD Display DIGITAL AUDIO INPUT OUTPUT Digital Referencing POWER UP CONNECTIONS EMC COMPLIANCE REMOTE CONTROL CONNECTOR MEMORY ADDITION POWER ON RESET SPECIFICATION 6110 RS422 IMPLEMENTATION LIST DETAIL OF SWITCHES ON FRONT FIGURE 2 DETAIL OF DEFAULT LCD FIGURE 3 REAR PANEL VIEW FIGURE 4 FRONT PANEL LAYOUT O O O uw TL NN O O
11. UT OUTPUT GAIN SET With 6db measured at the input analog XLR connectors single ended the sensitivity control on the front panel set to Max and the output connectors single ended with 6000 loads Adjust RV8 for 9dB at right channel E Adjust RV9 for 9dB at TP10 left channel D input levels set Adjust RV3 for 12dB at TP3 right channel E E set Adjust RV4 for 12dB at left channel Set the Bel 6110 into follow mode and connect valid timecode to SMPTE input and press record switch Record for full memory and stop Press Play Switch and Adjust RV5 for 17dB across Right output connector across 6000 load Adjust RV6 for 17dB across Left output connector across 6000 load Set sensitivity control on the front panel for 6dB across 6000 loads on the output connectors and check for channel balance Trim RV8 and RV9 as necessary Check for 6dB across 6000 loads on the output connectors when in record E E and channel balance or RV4 if necessary PRESET CAPACITORS ADAREF PRINTED CIRCUIT BOARD Please capacitor C82 adjustment video PLL lock With digital AES reference set to Video and any external AES digital Video reference disconnected monitor the AES digital output for Sample Frequency Adjust C82 if necessary to give sample frequency within x25ppm of 48kH Fs Connect a suitable external AES digital video reference and check that a lo
12. ck 1 achieved 27 TO REMOVE PRINTED CIRCUIT BOARDS CPU AND ADAREF Proceed as follows 1 Remove cover screws 19 and cover 2 Remove rear panel screws 9 2 on each end and 5 on underside 3 Remove the centre plate heatsink screws from the underside 4 Gently ease the rear panel away from the main printed circuit boards disconnecting the 3 header plugs 5 Remove all CPU and printed circuit fixing screws 10 6 Remove the 2 power supply connectors PL1 and and CPU keyboard LCD connectors PL4 and PL5 7 Lift out of the chassis ADAREF CPU centre plate 8 To separate the ADAREF and CPU printed circuit boards cut the cable tie holding the ADAREF power cable on the underside of the CPU printed circuit board and pull ADAREF board away from CPU board disconnecting PLI SKI and PL2 SK2 9 To re assemble follow the above in reverse order firstly pushing the CPU and ADAREF boards together and fitting a cable tie holding the ADAREF power cable in position NOTE Care should be taken not to trap the ADAREF power cable under the centre plate when re fitting to chassis Locate in cutout provided in centre plate After board changes it may be necessary to reset the CPU Board to obtain correct operation this will reset parameters to factory set values Power on and while the logon information is displayed i e Model No etc Press the set key The unit will t
13. ding made no audio at inputs digital input selected Check audio is present at the inputs indicators ensure the required input mode digital or analog is selected Check input sensitivity control front panel with no input AES Noisy digital No digital REF Ensure that an AES reference is connected 48kHz AES selected to the unit if AES REF is selected Distorted output Headroom Adjust input sensitivity control Noisy output Loose or Check all memory modules are fitted correctly analog or digital misaligned memory module Remote control inoperative or intermittent Remote connect ion not fully push ed in on rear panel broken wires in remote cable Check remote connection is fully pushed in and lock Check cable for damage 21 BEL 6110 Lay off recorder Application Notes 22 BEL 6000 Introduction The Bel recorder or Bel Box as it is known throughout the broadcast industry has become the industry standard for audio lay off operations in VT editing The initial idea for the Bel 6000 came from Jeff Baker of the BBC during the AES Convention in Hamburg back 1989 It was a wouldn t it be great if kind of idea but this was enough for Doug Russell and Mick Barnard of Bel Digital Audio to begin development The BBC received their prototype unit soon after and the first production units were delivered in January 1990 The primary reason for the
14. fter stored audio 5 seconds before the audio store 1 full 10 DIGITAL AUDIO INPUT OUTPUT The digital interface is AES EBU compatible at a sampling rate of 48kHz A sample rate converter is used on the input allowing the conversion of 32kHz 44 1kHz digital sources to 48kHz The digital REF AES input can be used with sampling rates other than 48kHz but the unit is optimised for 48kHz The digital output is always operating concurrently with the analog output The source however is either analog or digital DIGITAL REFERENCING 1 Audio in The BEL 6110 locks to incoming AES signal connected to the AES digital input 2 AES The BEL 6110 locks to the external AES signal connected to the AES REF digital input 48 2 3 Word The BEL 6110 locks to the external word signal connected to the word input 48kHz TTL levels 4 Video The BEL 6110 locks to the external video signal PAL or NTSC auto select connected to the video input 1V 5 Internal The BEL 6110 locks to the internal crystal oscillation 48kHz 25 POWER UP On power up the LCD will show the Model Number The Version Number and the maximum audio memory fitted either 8 16 or 32 Mbyte This display remains for a few seconds before resetting to the STOP mode A slight flickering of the display is normal during this time as the memory 5 being purged of random data The time taken to reset is dependent on the memory fitted lon
15. ger for the 32 Mbyte version 11 CONNECTIONS The rear panel has twelve connectors a voltage selector and a combined IEC power inlet switch and fuseholder From left to right these are Switch Fuse pin power inlet combined EMI filter unit Mains power voltage selector 115V 230V RS422 Serial Port 9 pin female miniature D type lockable Remote Control 9 pin female miniature D type lockable Time Code Input 3 pin XLR type connector female for SMPTE input Balanced Digital Ref Word 500 4 70 Digital Ref Video 750 BNC medium impedance 750 termination link internal Digital Output AES EBU male XLR 3 pin 1100 Digital Input AES EBU female XLR 3 pin 1100 Digital Ref AES 48kHz female XLR 3 pin 1100 Left and Right Audio Outputs 3 pin XLR type connector male Balanced Pin 2 hot Left and Right Audio Inputs 3 pin type connectors female Balanced Pin 2 hot EMC COMPLIANCE The BEL 6110 was designed and tested to comply with the EMC directive numbers EN55103 EN55022 EN55082 1 and EN60950 when used as directed This unit must be used with an earthed mains lead to comply with the CE low voltage directive CE 12 REMOTE CONTROL CONNECTOR The pin assignment on the 9 pin miniature D type connector is as follows 9 5 Function Record Switch Play Switch Record LED Ahead LED Behind LED 5V Ground Ground Chassis O 03 58 ON 13 MEMORY ADDITION To add me
16. hen reset to default settings 28 REMOVE POWER SUPPLY The power supply can be removed with all other boards in place proceed as follows 1 Remove power supply fixing screws 4 3 on the chassis side and 1 on the underside of chassis see drawing 2 Disconnect all connectors from the power supply printed circuit board PL1 PL5 5 off 3 Tilt power supply towards the chassis side and lift out 4 Re assemble in reverse order making sure the spacer under the power supply chassis heat sink is properly located see drawing e Spacer 1 Fixing Screws 4 Hr lt 2 on side on Underside chassis of chassis Power Supply 29
17. mory to your BEL 6110 you will need to purchase extra memory modules and an Eprom set To upgrade to 16m 84 secs stereo you will require 1 off BEL 6110 memory module 8 Mbyte 1 off BEL 6110 Eprom 16m H 1 off BEL 6110 Eprom 16m L On CPU printed circuit board Add memory module to Bank 1 and replace U22 with H Eprom and U23 with L Eprom To upgrade to 32m 168 secs stereo you will require 2 off or 3 off BEL 6110 memory modules 8 Mbyte depending on existing memory 1 off BEL 6110 Eprom 32M H 1 off BEL 6110 Eprom 32M L On CPU printed circuit board Add memory modules to fill ALL banks 0 3 and replace U22 with H Eprom and U23 with L Eprom To access CPU printed circuit board remove power IEC connection and then remove cover 19 off pozi type screws see Printed Circuit Board layout drawing in service section POWER ON RESET To reset the BEL 6110 to default settings proceed as follows Power unit off Power unit on and while the LCD display is showing the LOGON message Model Version etc press the SET key and hold for approximately 3 seconds A reset will now be initiated The display will acknowledge this by flashing the message power on reset in the top left corner of the LCD Default settings are Digital Ref Audio in Tracking mode follow 1 frame flywheel Audio Mode stereo Audio Source Analog LTC editor stripping start 00 00 00 00 LTC editor video system PAL 14 SPECIFI
18. n the amount of memory installed in the unit 24 2 Configuration for use under editor control MASTER VTA EDITOR BEL 6110 AUDIO OUTPUT AUDIO OUTPUT Figure 2 Under RS422 control the Bel 6110 uses SONYO protocol and identifies itself as a BVW 75 VTR The recorded memory of the Bel 6110 appears to the user exactly like a section of conventional tape which has been pre striped The stripe start can be set 0 23 Hrs and the length of the recording will depend on the size of the installed memory 42 84 or 168 Secs in stereo The window provided by the Bel 6110 can be recorded and replayed in the same way as magnetic tape If recording is attempted outside of this window then no recording will take place and no record flags will be returned by the equipment PLAY VTR RECORD VTR MIXER OUT BEL 6110 Figure 3 The Bel 6110 is not only an editing tool but may also be used for audio dubbing for example in the making of television trailers As the diagram shows any number of units can be locked to a common timecode source and then used in a similar way to a multi track tape machine 25 SERVICING INFORMATION CONTENTS Preset resistors Preset capacitors To remove CPU and ADAREF printed circuit boards To Remove power supply 27 27 28 29 26 PRESET RESISTORS CPU PRINTED CIRCUIT BOARD Liquid crystal display contrast set for maximum readability ADAREF PRINTED CIRCUIT BOARD INP
19. rial control RS422 is programmable from the set up menu OPERATION AND FRONT PANEL CONTROLS There are six front panel controls From left to right these INPUT SENSITIVITY This control permits the amplitude of the signal entering the unit to be adjusted For unity gain set this control to the centre position For other settings with audio and running time code present press the Record switch and adjust the control to provide the desired level The Peak Program indicators to the left of this control give a visual indication of optimum settings For normal operation the yellow LED indicators should be on constantly with the green LED indicators flashing on peaks RECORD SWITCH Providing there is time code present pressing Record starts recording new audio with its corresponding time code A second press of Record returns the unit to Follow mode as does pressing Play or interrupting the time code for example by stopping or searching the edit VT The red LED above the Record switch indicates Record mode this indicator will flash 5 seconds before the memory is full The amber LED indicators to the left and right of the record switch indicate the position of the stored audio relative to the incoming time code When the in coming time code is before the stored audio the left LED will light when it is locked both LEDs will light and when it is after only the right LED will be lit RECORD SWITCH IN SERIAL MODE Depre
20. ssing the Record switch while in serial mode will start the BEL 6110 recording at the displayed time code A second press will stop the recording This enables the BEL 6110 to record while attached to a play only editor port This facility enables editing equipment with limited numbers of record ports to be used more effectively PLAY SWITCH Pressing Play retrieves the stored audio from the start of the most recent recording Whilst in Play mode incoming time code is ignored A second press of Play returns the unit to the Follow mode PLAY SWITCH IN SERIAL MODE Pressing Play whilst in serial mode retrieves the stored audio information starting at the displayed time Pressing a second time will stop this process A SET AND PAGE KEYS Refer to the diagrams 1 and 2 for the details of operation Basically The Set key selects the different modes to be changed The key is used to make a change The Page key is used to access programmable features within a Set mode DEFAULT DISPLAY SET DIGITAL REF INTERNAL AUDIO IN AES WORDCLOCK VIDEO SET TRACKING MODE LTC START EDITOR PAL NTSC LTC FOLLOWER PAGE FLYWHEEL SET AUDIO MODE STEREO MONO SET SOURCE ANALOGUE DIGITAL SET DEFAULT DISPLAY DIAGRAM 1 SET UP MENUS iT Peri MEM
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