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junger b40 Operation Manual

4ch digital audio limiter
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4ch digital audio limiter
b41
release 2.3.0

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Summary of Contents for junger b40

  • Page 1 4ch digital audio limiter release 2.3.0...
  • Page 3 FOREWORD Thank you for buying and for using the 4-channel Digital Audio Limiter b41. Not only you have acquired the latest generation of digital dynamic range processing, but also a piece of equipment which is unique in its design and specification. Please read this manual carefully to ensure you have all the information you need to use the 4-channel Digital Audio Limiter b41.

  • Page 4: Table Of Contents

    CONTENTS 2. Function description ........…. 2.1 Basic description ........... 2.2 Block diagram ..........2.3 Audio signal processing ........ 2.3.1 Gain ............2.3.2 Limiter Threshold......2.3.3 Limiter Program........2.3.4 Influence of the signal delay time 2.3.5 Transparent mode ......2.4 Remote system ………………………………. 3.
  • Page 5 6.2 Error messages and trouble shooting ........ 6.3 Initialization the unit ............7. Application notes ..............7.1 B40 series with SDI interface ..........7.2 Basic working modes with SDI ........... 7.3 Remote control with brc …..........8. Technical specifications ............

  • Page 7: Function Description

    • pairwise bit transparent mode input to output • extern sync mode, AES/EBU or VIDEO (or SDI if optional SDI-interface is present) • RS-422 interface for serial remote • GPI interface for parallel remote control, tally output operation manual b40, chapter 2 -Function description- page 2-1...

  • Page 8: Block Diagram

    2. FUNCTION DESCRIPTION BLOCK DIAGRAM page 2-2 operation manual b40, chapter 2 -Function description-...

  • Page 9: Audio Signal Processing

    ---------------------------------------------------------------------------------------------- 5 ms to 0.5 sec LIVE 15 ms to 1.2 sec SPEECH 30 ms to 2.5 sec 70 ms to 5.0 sec UNIVERSAL 50 ms to 8.0 sec CLASSIC operation manual b40, chapter 2 -Function description- page 2-3...

  • Page 10: Influence Of The Signal Delay Time

    PC. With it various boxes can be combined in one remote system or remote chain. However a maximum of 16 devices per model can be controlled in one chain. page 2-4 operation manual b40, chapter 2 -Function description-...

  • Page 11: Installation

    3. INSTALLATION INSTALLATION The digital audio limiter b41 was carefully packed in the factory and the packaging was designed to protect the equipment from UNPACK THE UNIT rough handling. Please examine carefully the packaging and its contents for any signs of physical damage, which may have occured in transit.

  • Page 12: Synchronization Of Digital Output

    3. INSTALLATION The digital audio limiter b41 has a digital signal output only. To the problem-free combination of following digital devices, the SYNCHRONIZATION digital signal processing can be locked to an external clock reference. The selection of the corresponding input is made in DIGITAL OUTPUT the SYNC MODE menu.

  • Page 13: Remote Control

    3. INSTALLATION REMOTE CONTROL The digital audio limiter b41 can be remote-controlled by means of parallel GPI contacts. 3.7.1 GPI REMOTE use : remote-controlled changeover of presets CONTROL (PARALLEL connector: D-SUB 15pin, female REMOTE) Pin assignments Signal name Logic Functions PRESET1 recall preset1 PRESET2...

  • Page 14: Tally Out

    3. INSTALLATION 3.7.2 TALLY OUT The digital audio limiter b41 can transmit specific device statuses via parallel Tally lines. use: Control of the remote-controlled changeover of presets connector: D-SUB 15pin, male Pin assignments Signal name Functions T1 open contact preset1 recalled T2 open contact preset2 recalled T3 open contact...
  • Page 15 3. INSTALLATION Electrical specification: Tally output type: normally open relais contacts Contact rating: 1A 24 VDC, 0,5 A 125 VAC max. 30 W 62,5 VA max. 60 VDC, 125 VAC Pin1...14 Tally output Open contact Pin15 Common root contact Operation manual b41, chapter 3 -installation- page 3-5...

  • Page 16: Serial Remote Control

    3. INSTALLATION 3.7.3 SERIAL REMOTE The digital audio limiter b41 can be remote-controlled by means CONTROL of serial remote RS-422. (RS-422) use : remote-controlled changeover of presets protocol: available on request connector: D-SUB 9pin, input - female output - male Pin assignments The cable is wired 1:1 completely, the shield of the cable must be connected on both ends!

  • Page 17: Location Of Parts And Controls

    4. LOCATION OF PARTS AND CONTROLS LOCATION OF PARTS AND CONTROLS All control elements gives direct access. In menu modes the alphanumeric display above the related button or rotary knob is showing the specific function. 4.1. FRONT PANEL Output level Input level Preset selection display...
  • Page 18 4. LOCATION OF PARTS AND CONTROLS input MASTER ganging control knob for ch1…4 GAIN selection (push) and adjustment (turn) of output gain PROGRAM selection of limiter characteristic limiter LINK selection of channel link mode THRESHOLD adjustment of limiter threshold output BYPASS switches bypass on and off page 4-2...

  • Page 19: Rear Panel

    4. LOCATION OF PARTS AND CONTROLS 4.2. SDI IN-/ DIGITAL DIGITAL REAR PANEL OUTPUT OUTPUTS INPUTS SERIAL REMOTE GPI REMOTE SYNC IN IN/OUT IN/OUT fig. 2: rear panel b41 POWER INPUT IEC mains input connector 100-240V, 50/60 Hz with integrated fuse REMOTE serial remote interface RS-422 connector:...

  • Page 20: Switches And Jumpers For Configuration

    4. LOCATION OF PARTS AND CONTROLS Some basic settings are to select by switches on the rear panel SWITCHES AND or by switches and jumpers at the internal circuit boards of the JUMPERS FOR unit. These settings can occur general changes for operation CONFIGURATION and should made by qualified engineering staff only.

  • Page 21: Selection Of Sdi Split Mode

    Split Mode The selection of split mode (SDI DIRECT) is made by setting jumper J1 on main board of the unit. The 4-channel processors of b40 series fitted with SDI-interface are compatibel with the standard SMPTE 272M-AB. They CONFIGURATION support 48 kHz synchronous audio sampling with 20 bit word OF SDI INTERFACE length.

  • Page 23: Operation

    5. OPERATION OPERATION The use of the digital audio limiter b41 is very easy. The setup or the programming of the digital audio toolbox b40 is DESCRIPTION OF made by adjustment of various parameters and settings. OPERATIONS The description is made related to the functional blocks on the front panel.

  • Page 24: Recalling, Saving And Editing Of Presets

    5. OPERATION Selection of sync signal input MODE SYNC selection of sync-signal input push unit is synchronized with AES input channel 1/2 (AES 48kHz) unit is synchronized with AES input signal at external sync input VIDEO unit is locked to video signal at video input (with 48kHz) unit is locked to SDI signal at SDI input (with 48kHz)
  • Page 25 5. OPERATION Storage of presets PREVIEW until SAVE appears in the window. push push PRESET to enter preset save mode, “S” and a blinking number 1..8 are to see push push PRESET to select the preset 1….8 to save turn PRESET to save selected preset.

  • Page 26: Input Selection

    5. OPERATION 1/2 or 3/4 to switch for the input 1/2 or 3/4 between AES and SDI INPUT push SELECTION TRANSPARENT to establish bit transparent connection TRANSPARENT between input and output 1/2 or 3/4 or MODE push 1/2 and 3/4 (necessary to pass non-audio bit streams through without changing) It is possible to choose one of different programs for the dynamics PROGRAM...

  • Page 27: Threshold

    5. OPERATION Limiter threshold level means maximum output level. The output level will never be more than limiter threshold level. The limiter threshold THRESHOLD level can be changed in steps of 0.1 dB , within a range from -20...0 dBFS. Adjustment of limiter threshold is channel independent if the channels are not linked.

  • Page 29: Boot Display And Trouble Shooting

    6. BOOT DISPLAY AND TROUBLE SHOOTING BOOT DISPLAY AND T ROUBLE SHOOTING display meaning / explanation BOOT DISPLAY LIMITER display of processor model display of type ADR. x display of unit address for serial remote control display error / message remedies ERROR ! connect the sync input...

  • Page 30: Initialization The Unit

    6. BOOT DISPLAY AND TROUBLE SHOOTING Should have remained the device no more operable and/or in the program execution stand, recommends itself an initialization the INITIALIZATION device. THE UNIT During initialization, all storage areas important for the program and registers are loaded with the factory setup and the program is restarted.

  • Page 31: Application Notes

    SDI data stream. To address a specific channel group the group selection is possible (see 4). The b40 provides an optional SD- or HD-SDI board. When you switch on the device the plugged in interface will be indicated in the display FEATURES •...

  • Page 32: Basic Working Modes With Sdi

    7. APPLICATION NOTES For the basic working mode the input of the digital audio processing can be selected between AES/EBU or SDI (serial BASIC WORKING digital video with embedded audio). The processed signals are MODES WITH SDI present at both outputs always - at AES/EBU and SDI. There are two additional working modes using the SDI interface.

  • Page 33: Remote Control With Brc

    Fig . 8.2: installation with remote control brc features of brc: - universal remote control panel (RS-422) - remote operation of several units (up to 16 devices from B40 series 2 generation) - remote panel is detecting connected units - remote control panel brc8x as programmable control unit with "one touch"...

  • Page 35: Technical Specifications

    8. TECHNICAL SPECIFICATIONS TECHNICAL SPECIFICATIONS sample rate : 48 kHz digital signal audio data format : 24 bit (AES/EBU), 20 bit (SDI) processing DIGITAL IN/OUT digital AES/EBU in- / outputs connector : XLR,110 Ohm, balanced BNC, 75 Ohm, coaxial input format : AES professional, AES consumer output format : same as input format...
  • Page 36 8. TECHNICAL SPECIFICATIONS AUDIO : audio data format : 20 Bit, transparent for C-Bit and U-Bit according to AES3 audio sample rate : 48 kHz synchronous to video-carrier latency : (deembedder + embedder) SD : < 2,6 msec GENERAL : power supply : +5V DC consumption :...
  • Page 37 8. TECHNICAL SPECIFICATIONS SYNC IN sync AES/EBU in- / outputs connector : BNC, 75 Ohm, coaxial level : 0,5 ... 5 Vpp input format : AES professional, AES consumer VIDEO connector : BNC, 75 Ohm, coaxial level : 0...1 Vpp input format : Blackburst or PAL/NTSC composite video remote control...

  • Page 38: Warranty And Service Information

    9. WARRANTY AND SERVICE INFORMATION WARRANTY AND SERVICE INFORMATION JÜNGER AUDIO grants a two-year warranty on the 4-channel digital audio limiter b41 If the unit has to be serviced, please send it ideally in the original box, to: JÜNGER AUDIO - Studiotechnik GmbH Justus-von-Liebig-Str.
  • Page 39 KONFORMITÄTSERKLÄRUNG DECLARATION OF CONFORMITY Geräteart : 4ch digital toolbox Type of equipment : 4ch digital toolbox Produkt / Product : Das bezeichnete Produkt stimmt mit den Vorschriften folgender EU-Richtlinie(n) überein: The aforementioned product complies with the following Europaen Council Directive(s): 89/336/EWG (geändert durch 91/263/EWG und 92/31/EWG) (changed by 91/263/EEC and 92/31/EEC)

This manual is also suitable for:

B42B41B43B45B44

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