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APPENDIX -

Troubleshooting

You press the POWER switch but there is no light

- The POWER switch on the rear panel is switched off.

The Input PPM meters dont peak out

- You are using analog Inputs, but the Input selector in the I/O menu is set to digital in.

- The analog Input level is set too low.

No sound through the DBMAX

- You are using analog Inputs, but the Input selector in the I/O menu is set to digital in.

You cannot turn the power off

- Hold the POWER switch pressed for at least 3 seconds.

You hear a lot of noise on the DBMAX Output

- 8 bit dither is on, go to the out section and select a suitable dither.

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Summary of Contents for DBMAX - V 2

Page 1: ...DBMAX V 2 DIGITAL BROADCAST MAXIMIZER English USER S MANUAL All manuals and user guides at all guides com a l l g u i d e s c o m...

Page 2: ...oding 26 MS Encoding 26 Expander 28 Compressor 30 Limiter 34 Inserts Post Dynamic Transmission Limiter 36 Production Limiter 36 Output Dither 38 Fade 38 Tools Flow 40 Surround Meter 40 Peak Hold Meter...

Page 3: ...BMAX If you work against digital peak meters or in transmission the setting should be spot on If you work in an environment depending on analog PPM meters this setting should be 3 4 dB above the maxim...

Page 4: ...essing at any Sample Rate between 32 and 48kHz Relay bypass of analog I O on power down Unlock detection of digital Input Audio bandwidth to 24kHz or variable lo pass filtered for FM transmission 24 b...

Page 5: ...00 Hz 44100 Hz 32000 Hz MIDI IN LED MIDI or RS485 receive indicator CARD LED Indicates presence of a valid memory card ACTIVITY LED Indicates when a calculation is performed EDITED LED Indicates that...

Page 6: ...ential parameters BYPASS Bypass the signal processing CONTROL SECTION OK Confirm operations and switch individual blocks on off HELP Get help on selected display by pressing the HELP key BLOCK Select...

Page 7: ...Outputs Serial No Word Clock Input AES EBU digital In Out S PDIF digital In Out RS485 In Thru Out EXTERNAL CONTROL Pedal Fader Input NOTES To comply with international regulations we have also added...

Page 8: ...nced A D INPUT PPM OUTPUT PPM Defined Overload Left Left Left Right Bypass Fader Right Right Input Selector Digital Output AES Digital Input AES AES EBU S PDIF Digital Output S PDIF Digital Input S PD...

Page 9: ...nt applications we propose a few different setups Radio Production Transmission applications DAB production or FM Production suite The two applications for the DBMAX in this configuration are 1 The DB...

Page 10: ...DBMAX can be inserted post master to emulate the signal processing in transmission TV continuity Transmission The two applications for the DBMAX in a transmission situation are 1 Digital Sound DBMAX o...

Page 11: ...ent custom user setups Place the cursor next to Save Setup using the MENU keys Press OK and use the MENU keys to select the location where you want to store the setup Confirm with OK to store the pres...

Page 12: ...A typical situation could be trimming down the digital Output of a CD player All trims may be stored using the Save setup command Output Gain Sets the digital Output level Define Overload LED Overload...

Page 13: ...VELS ____________________________ Ref Level 0dBu dBFS 18dB Abs Peak max 9dBu dBFS 9dB ____________________________ ANALOG LEVELS In level 0dBFS 18dBu Trim Input 0dB Trim Output 0dB Out Fine L 0 0dB Ou...

Page 14: ...nditions It is possible to set up a couple of conditions for the preset that you are about to recall Use the MENU keys to step through the filters Recall This function enables you to make a partial re...

Page 15: ...ted Note The READ ONLY flags may be disregarded if you wish to replace the entire RAM bank from the Utility page Deleting a Preset To delete a preset in the internal RAM bank or PCMCIA card Press STOR...

Page 16: ...s in the Utility Page Display Angle RS485 Security General Purpose Input Parameters in the Tools digital Out Page User Data Name and Phone and Keyboard lock Setup Parameters Setup parameters describe...

Page 17: ...e selector Sample Rate converter on off Clock select Master Input delay in milliseconds Lo Cut adjust Hi Cut adjust Reference level selection Choose whether the setup should follow preset changes or n...

Page 18: ...re complete and should be used if possible It is not possible to loop through Channel Status or User Bits on the AES EBU interface when the SRC is inactive MAIN PAGE Input Clock Output Sample Rate Sel...

Page 19: ...high order and provides additional Pilot tone notching at 19kHz If very hot digital Inputs are used for FM transmission we recommend trimming the digital Input level down by 1dB on the Ref Levels page...

Page 20: ...the different Insert options are explained Please use this illustration for overview of the level handling in accordance to various parameters in the DBMAX MAIN PAGE Inserts 1 3 All manuals and user...

Page 21: ...I 2 EXPANDER COMPRESSOR LIMITER OUTPUT I 4 Parametric Equalizer Frequency Band Level Curve Type Gain Manual Make up gain or EQ match Low Level Target Low level limit for the AGC Ratio Hold Release AG...

Page 22: ...his is the Max attenuation the AGC can perform If both Min and Max are set to 0 no gain correction will be applied by the AGC Low level If the signal is below the Low Level value the AGC will add no g...

Page 23: ...stereo perspective Added width The actual added width Black box indicates selected block CURVE Sets the frequency characteristics of the dynamic damping filter Gain reduction Indicates the actual gai...

Page 24: ...Enhance you can enhance the stereo information of the signal This function is especially useful when you are processing material with only a small amount of stereo perspective By enhancing the stereo...

Page 25: ...ce adjust MS Decoding Mid Side balance control MS Decode on off switch Normalizer Consecutive samples clipped Counts the number of clipped samples within a 1 sec time period Active Will blink when act...

Page 26: ...ward facing directional mic and a side facing bi directional mic MS recording offers very good stereo imaging with the added benefit of excellent mono compatibility Through the electronic process of M...

Page 27: ...age select Selected band indication A dot indicates selected band or bands By default all bands are selected but you can adjust each band individually Gain Reduction Shows the actual gain reduction on...

Page 28: ...Monitor Graphical indication of the performed gain reduction in each of the five bands Page 2 Press Menu keys to select page 2 Attack Attack is the time the Expander uses to bring the reduced signal t...

Page 29: ...INPUT I 1 I 3 I 2 EXPANDER COMPRESSOR LIMITER OUTPUT I 4 PAGE 2 Gain Reduction Shows the actual gain reduction on each of the 5 individual bands The Edit guide Arrow direction indicates whether the pa...

Page 30: ...ensity of compression while keeping the relationship between the Threshold and Band level parameters in accordance to the specified Ratio settings Threshold Ratio and Band level parameters are found i...

Page 31: ...each of the five bands Hold From 10 200ms Attack Individual Attack times for each of the five bands Cross over point Cross over frequency Slope type Crest This parameter determines whether the Compres...

Page 32: ...ssor and Limiter but they are identical in all three blocks Two different filter structures are available SYM with soft slopes MID with higher order middle band focused filter slopes The MID setting i...

Page 33: ...r each of the five bands Release Individual Release times for each of the five bands INPUT I 1 I 3 I 2 EXPANDER COMPRESSOR LIMITER OUTPUT I 4 Gain Reduction Shows the actual gain reduction on each of...

Page 34: ...fferent filter structures are available SYM with soft slopes MID with higher order middle band focused filter slopes The MID setting is designed specifically for low intermodulation between the bands...

Page 35: ...on and Continuity applications Softclipper PPM Characteristics Softclipper Release time pr second Limit Gain Reduction Shows the actual gain reduction performed by the Production Limiter Release time...

Page 36: ...number of dB the Limiter is off the Threshold setting Rel s Sets the Release time in the Transmission Limiter This is the fallback time for the Limiter after the signal drops below the Threshold HF co...

Page 37: ...receiving device e g post DAT to hear the final result Dither Resolution The Output resolution of the DBMAX is 24 bit When the receiver of the DBMAX s signal has a lower resolution Output Dither must...

Page 38: ...apable of auto fades up to 60 seconds Select the Fade Curve type and the Fade time To start the fade select the fade up down parameter and turn the ADJUST wheel You also have the possibility of a manu...

Page 39: ...peak in the Ref Levels menu When a block is overloading use the parameter keys to select the current block and press OK for direct access TOOLS Surround meter Surround meter Four bars indicating the l...

Page 40: ...means that the two channels are out of phase Time division Sets the curve drawing speed TOOLS Peak Hold Meter Numeric readout of peak values Peak The Peak Hold meter is an Output meter with infinite h...

Page 41: ...of the test tone TOOLS Digital I O DIO Pre emphasis indicator On off RECEIVED STATUS BITS Source device DAT CD mixer etc Number of audio bits received Copyright None One copy only Infinite copies Ton...

Page 42: ...in order to take full advantage of the DBMAX s 24 bit resolution you should select AES EBU to make sure that the receiving device after the DBMAX will accept all 24 bits S PDIF When S PDIF is selected...

Page 43: ...485 CTRL Remote change of presets is implemented in the DBMAX by using a RS485 controller A PC or Macintosh computer may therefore easily control the system The command structure for a Program Change...

Page 44: ...to RAM when your intention was to select RAM to Card the entire RAM will be overwritten To avoid this unpleasant scenario you can use the RAM protect function If this function is enabled you will not...

Page 45: ...The User Default includes all system parameters Set User Name and Phone number Store your name and phone number in the DBMAX Press OK to access the user data menu Use the MENU keys to move cursor bet...

Page 46: ...ct MIX when the vocals and the music in your mix is evenly weighted Compression Soft program types would be slowly changing signals as found in some Classical music New age Ambient etc Medium program...

Page 47: ...O menu is set to digital in The analog Input level is set too low No sound through the DBMAX You are using analog Inputs but the Input selector in the I O menu is set to digital in You cannot turn the...

Page 48: ...OK Connect the DBMAX s ADAT Output to the DBMAX s ADAT Input and press OK PPM must show 0dB to pass test Press the HELP key again to exit test MIDI I O test Select MIDI I O test by pressing OK Connec...

Page 49: ...0 5 ms 48 kHz DC to 23 9 kHz 0 01 dB 48 kHz Asynchronous 120 dB 106 dB 44 1 to 48 kHz 1 kHz 2 dBFS 31 kHz to 49 kHz XLR balanced pin 2 hot 20 kOhm balanced 27 dBu balanced 4 dBu balanced 24 bit 1 bit...

Page 50: ...EVELS page and load a suitable setup e g EBU Broadcast Film Mastering or CD Mastering Also check that the Hi Cut filters on Input page no 2 are not activated and the Delay on Input page no 1 is set be...

Page 51: ...you use a digital composite generator normally the DBMAX should handle Emphasis generation HF Limiting and Soft Clipping to maximize the signal and avoid overshoots Emphasis should be generated as a c...

Page 52: ...oduces digital distortion of low level signals due to the lack of complete signal information To compensate for this dither must be applied Dither is a small amount of filtered noise that generates ra...

Page 53: ...e that interference will not occur in a particular installation If this equipment does cause harmful interference to radio or television reception which can be determined by turning the equipment off...

Page 54: ...WITCH or similar JACK PLUG Mono male 6 35mm 1 4 max 100m MASTER FADER or similar 2 wires SHIELDED CABLE 3 or 5 wires screen NOTE On TC units with RS485 interface pins 1 and 3 on the DIN connectors are...

Page 55: ...und Tip Pin 2 Hot Ring Pin 3 Cold Pin 1 Pin 1 Ground Pin 2 Pin 2 Hot Pin 3 Pin 3 Cold Sleeve Pin 1 Ground Tip Pin 2 Hot Sleeve Pin 3 Cold XLR XLR Jack unbalanced XLR Jack balanced XLR TIP RING GND TIP...

Page 56: ...cessor Voice Processor Voice Processor Voice Processor Voice Processor Brickwall Limiter Brickwall Limiter Optimize Limit Optimize Limit Optimize Limit Optimize Limit Mix Assist Limit Mix Assist Limit...

Page 57: ...Broadcast EBU Broadcast EBU Broadcast EBU Broadcast EBU Broadcast EBU Broadcast RO RO RO RO OB PP OB PP OB PP OB PP OB PP PP PP PP BC OB BC OB BC OB Wide Outlet Energy Outlet Energy Outlet2 Car Radio...

Page 58: ...maximum position To compensate for mechanical tolerances draw back the Master Fader slightly Press OK Move the Master Fader to minimum position To compensate for mechanical tolerances draw back the Ma...

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