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55 000 015 – Ed. E

Mix2000 - User Manual

9

This document is the property of AETA and can not be duplicated without authorisation

February 2001

Manuel Mix2000 (E) - Ed. E.doc

3.3. Adjusting the bar-graph display

As described above in 2.5, the display brightness is adjustable and two level display modes are available:

•

Standard bar-graph mode, with peak hold;

•

“Dot-only” mode, where only the last peak is displayed.

The display mode and brightness can be set using the push-button near the display.

3.3.1. Display mode selection

When switched on, the mixer is in standard bar-graph display mode. Shortly pressing the button switches
the display to “Dot-only” mode, pressing it again brings it back to normal mode.

3.3.2. Display brightness adjustment

The display brightness can be adjusted among five intensity levels, from very low intensity (for use in the
dark) to a level high enough to read it in sunlight.

When switched on, the mixer is set with an average brightness. Press and hold down the button in order to
scroll the different brightness levels, by decreasing brightness order. Release the button when the desired
level is reached.

Note: after reaching the lowest level, the cycle resumes from the highest level.

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Содержание MIX2000

Страница 1: ... and can not be duplicated without authorisation February 2001 Manuel Mix2000 E Ed E doc MIX2000 4 inputs portable mixer User Manual AETA AUDIO 361 avenue du Général de Gaulle 92140 Clamart FRANCE Tél 33 0 1 41361212 Fax 33 0 1 41361213 Telex 631178 Web http www aetausa com ...

Страница 2: ...ription 5 3 1 Left panel Inputs 5 3 2 Front panel 6 3 3 Adjusting the bar graph display 9 3 4 Right panel Outputs 10 3 5 Replacing the batteries 11 3 6 Using L R M S matrixing 12 4 First level maintenance Internal configuration 14 4 1 Internal description 14 4 2 Internal configuration switches and jumpers 15 4 3 Internal adjustments 18 5 Technical characteristics 21 5 1 Interface characteristics 2...

Страница 3: ...urce and listening mode selection 2 Functions The general synoptic diagram shows the functions of the mixer It can be found in annex 6 2 General synoptic diagram page 32 2 1 Input stages Each input is symmetrical transformer coupled Microphone powering can be inserted in phantom mode or ton adder mode1 12V In phantom mode the power supply is 12V or 48V internally configurable Line level is support...

Страница 4: ...used for recording with M S stereo microphones In such case matrixing is applied as follows Left MAIN output MAIN L MAIN R where MAIN L R are the signals before matrixing Right MAIN output MAIN L MAIN R 2 5 Monitoring A signal in the mixer can be selected for stereo monitoring on a headphone and a programme level meter The monitored signal can be selected among the following sources Inputs 1 and 2...

Страница 5: ...internal stereo oscillator is available for sound checking and alignment The oscillator frequency is 1000 Hz on the left and 400 Hz intermittent on the right By internal configuration it is possible to have 1 kHz both on left and right channels It is also possible to make the right signal permanent 2 7 Slate A talkback microphone integrated in the mixer can be used for inserting the operator s voi...

Страница 6: ...er includes a dedicated output for feeding a wireless RF transmission device including power supply for the RF transmitter Lastly extension interfaces are available for coupling two or more MIX2000 mixers together for e g increasing the number of inputs 2 11 Digital output option The MIX2000 can be optionally1 equipped with an analogue to digital converter 24 bit resolution This module converts th...

Страница 7: ...terface is also available on this side including the interface connector and a potentiometer for adjusting the Monitor Return gain Figure 1 Left panel Inputs and Monitor interface The following elements are available for each input Input connector female XLR Microphone power selection switch Dyn dynamic microphone or line level Ph phantom power supply T12V1 Tonadder Pad switch Input gain selection...

Страница 8: ...channels 3 and 4 Notes When the fader coupling switch is set in the rightmost position channel fader 4 sets the gain for both channels simultaneously and channel fader 3 is inoperative Of course the same holds for the 1 2 fader coupling switch with respectively fader 2 and fader 1 When pushing the SOLO button on a channel the corresponding input signal is sent to both monitoring channels overridin...

Страница 9: ...on When the master fader is set at the reference gain point and the limiter compressor is off the MAIN output has a 0 VU level when the internal oscillator is set on Note that the master fader is located after the limiter compressor on the signal chain see general diagram on page 32 The limiter compressor is a stereo processor but it is possible internal configuration to select independent process...

Страница 10: ...e switch is activated In such case the action of the mode selector is indicated by red coloured text near the selector The LED above the power switch lights green when the unit is on However the LED flashes red whenever the batteries are low less than 8 8 V or 1 1 V per battery or the external DC power is low less than 12 8 V1 The Slate button can be used for activating the talkback microphone The...

Страница 11: ... mode selection When switched on the mixer is in standard bar graph display mode Shortly pressing the button switches the display to Dot only mode pressing it again brings it back to normal mode 3 3 2 Display brightness adjustment The display brightness can be adjusted among five intensity levels from very low intensity for use in the dark to a level high enough to read it in sunlight When switche...

Страница 12: ...ng M S encoded signals while using the mixer in normal stereo mode Note that when monitoring the MAIN output the signal is picked up after the possible matrixing When the mixer is fitted with the digital output option this output is available on the RF transmitter link socket An adapter cord for SPDIF format included in the option makes the signal available on a male RCA plug Alternatively it is p...

Страница 13: ...is shown on the back panel see the and signs inside the battery door as well To lock the battery door hold the door closed and firmly push the door lock while holding it in the proper orientation that shown on the photograph below until it locks into place You may also twist the door lock slightly while pushing it For proper operation of the mixer Replace all batteries at the same time for new bat...

Страница 14: ...ge consistency on the level meter display If matrixing the monitored signal the left bar graph shows the L R sum while the right bar graph shows the L R difference For common stereo production the L R level should be much lower than the L R level especially when mono compatibility is desired On the contrary L R level higher than L R level would warn about a possible problem in sound pick up e g on...

Страница 15: ... output switch kept on the L R position Matrixing is needed for monitoring a normal stereo signal on the headphones front panel switch on the M S position 3 6 4 Case 4 MS recording using classical microphones In this case mono microphones or normal L R stereo microphone couples are used but the output is encoded in M S format for recording In this way further stereo image processing is made possib...

Страница 16: ...in part of the mixer is the motherboard mounted on the top of the mixer parallel to the top cover Various daughterboards and modules are connected to the motherboard Front panel assembly including all front panel control and display elements Input module on the left side Output module on the right side Monitoring and slate1 daughterboards mounted directly upon the motherboard For easy replacement ...

Страница 17: ...precautions is not covered by the warranty 4 2 1 Top side configuration elements For accessing the elements remove all screws on the top and put the top cover aside The motherboard appears as on the following picture The jumpers and switches are shown with the effect of each position Figure 8 Internal configuration top side view Notes The phantom power voltage can be configured 48 V or 12 V separa...

Страница 18: ...tom side view Notes Slate signal insertion the jumper must be set on one among the four allowed positions or none of them in order to disable the slate function It is also allowed to select more than one position as the signal is injected on each output for which the corresponding jumper is set on Please also refer to following chapter 4 2 3 in case the mixer is equipped with a digital output Do n...

Страница 19: ...mpling rate can be set at 44 1 kHz or 48 kHz Besides the SPDIF PRO jumper selects the frame format of the digital output SPDIF consumer format SPDIF or IEC958 PRO professional format compliant with AES3 recommendation The proper selection depends on the application The following table shows the allowed combinations as well as some typical applications The table also shows the external adapter cabl...

Страница 20: ... 4 3 1 Top side Most adjustments are accessible from the top as visible on the following picture Figure 11 Internal adjustments top side view Function Reference Adjustment P2 Input symmetry Channel 1 P1 Input symmetry Channel 2 P4 Input symmetry Channel 3 Input symmetry adjustment Common mode rejection P3 Input symmetry Channel 4 P6 Balance centre point P8 Compression ratio left P17 Compression ra...

Страница 21: ... trimmers on the Monitoring and slate amplifier daughterboard as visible on the following diagram Figure 12 Internal adjustments bottom side view Function Reference Adjustment P1 Gain calibration Right P2 Gain calibration Left Programme level meter ZZ3 ZZ4 Mode and brightness settings at power on time P3 Overall gain P4 Noise gate threshold P5 Compressor slope Slate microphone amplifier and dynami...

Страница 22: ...l Mix2000 E Ed E doc By shorting with solder ZZ3 and or ZZ4 it is possible to select for the level meters another start up mode than the factory setting solder bridge no solder open circuit Configuration Display mode on start up Configuration number ZZ3 ZZ4 Mode Brightness 0 factory Bargraph Medium 1 Dot Medium 2 Bargraph Maximum 3 Dot Minimum ...

Страница 23: ...mum input level with pad 31 dBu Nominal input headroom 56 dB Input gain sensitivity setting 15 to 57 dB by 6 dB steps 8 position rotary switch Input impedance 2 kΩ Common mode rejection CMRR 90 dB 1 kHz 5 1 2 MAIN outputs Format Symmetrical electronically balanced L R or M S encoded Connectors XLR male socket 3 pin Output pad attenuation 60 dB separately available on left and right Nominal output ...

Страница 24: ...VU Maximum output level 20 dBu Output gain without pad 30 to 0 dB by 6 dB steps 6 position rotary switch Output impedance 50 Ω 5 1 4 Headphone output Connector jack socket locking Maximum output level 20 dBu Nominal load impedance 16 Ω 5 1 5 External DC Connector 4 pin HiRose socket HR10 7R 4P See pin out in following table Nominal voltage 13 V Minimum voltage for operation 5 V Low battery thresho...

Страница 25: ...al Source impedance 1 kΩ DC power output 9 V or battery voltage Max 100 mA on 9 V The connector has following pin out Pin Function 1 Audio output 2 NC 3 NC 4 DC power supply for the RF transmitter 5 Power and signal ground 6 NC The audio output is the MAIN left or right signal depending on the internal configuration for details refer to chapter 4 2 Internal configuration switches and jumpers Pins ...

Страница 26: ...wing pin out Pin Function Direction 1 ON AIR relay command to the mixer 12 V IN 2 Right output MAIN R signal OUT 3 Left output MAIN L signal OUT 4 Mono output MAIN L R OUT 5 Signal ground 6 MON Return Left IN 7 MON Return Right IN 8 MON Return Left IN 9 Signal ground 10 MON Return Right IN 11 SLATE OUT 12 SLATE OUT 5 1 8 Extension inputs outputs EXT IN Connector 9 pin female sub D socket See pinou...

Страница 27: ...in Function 1 Input to right mixer bus 2 Signal ground 3 Input to left mixer bus 4 NC 5 Connected to DC power batteries 6 NC 7 NC 8 NC 9 NC The EXT OUT connector has following pin out NC no connect Pin Function 1 MAIN R signal 2 Signal ground 3 MAIN L signal 4 Signal ground 5 Connected to DC power batteries 6 Channel 1 signal pre fader 7 Channel 3 signal pre fader 8 Channel 2 signal pre fader 9 Ch...

Страница 28: ... delivers the signal on a standard plug and converts it to the appropriate electrical format With the SPDIF adapter cord included with the digital output option the output features following characteristics Standard IEC958 a k a SPDIF consumer format Format Asymmetric and transformer isolated Connector RCA male plug Output level on 75 Ω load 1 V c c Output impedance 75 Ω With the AES adapter cord ...

Страница 29: ...both limiter and compressor modes the level threshold or knee is 9 dBu 5 VU The compressor rate is 2 1 factory setting adjustable internally see 4 3 Internal adjustments while the limiter slope is more than 10 1 5 2 3 Level detection The level metering function can operate with VU or PPM ballistics depending on the internal configuration see 4 2 Internal configuration switches and jumpers The refe...

Страница 30: ...ill still operate without any noise because it switches over automatically to the internal batteries while the external source is interrupted The power consumption and the autonomy of the mixer highly depend on the operational conditions like the type and number of phantom powered microphones etc However the following guidelines can help predict battery life When using only dynamic microphones no ...

Страница 31: ...available in SPDIF format thanks to an adapter cable which is delivered with the option An adapter cable with AES EBU output is also available as an accessory see further This option is especially interesting when using the unit with a portable DAT recorder as the mixer can be seen as a high performance front end for the DAT recorder including all necessary high quality audio processing from the m...

Страница 32: ...rix M S and M S to produce the individual left and right signals for conventional stereo By changing the relative contributions from these microphones a variety of sound perspectives from monophonic to a very out of phase hyper stereo can be created M S L and M S R In summed mono L R the S component disappears M S M S 2M Since the matrix can be introduced at any point in the recording or post prod...

Страница 33: ...aptures the natural sonic perspective of any acoustical ensemble classical folk ethnic jazz or even unplugged rock The M S technique is also convenient for tracking choirs background groups drum kits or even logging room tone Motion picture sound Because most movies will eventually be broadcast and or be released as videos all of the mono compatibility concerns of broadcast audio apply to motion p...

Страница 34: ...return Ch 1 4 Master Balance MAIN SUB MONITORING SLATE Lim Comp LR MS 60dB 60dB MAIN L SUB L MAIN R SUB R MONITOR I F RF Tx Main OUT 0 30 Sub OUT 60dB PAD PAD PAD M S Matrix M S Matrix Headphone Mode Fader L L L Main OUT R R R Ch 1 4 ϕ ϕ Overload Overload 2 4 POWER SUPPLY EXTENSION Mike pwr Mike pwr PAD PAD External DC EXT IN EXT OUT DC DC ON OFF Detection 8 AA Batteries Dyn Ph T12 Dyn Ph T12 OFF ...

Страница 35: ...ithout authorisation February 2001 Manuel Mix2000 E Ed E doc 6 3 Gain and level diagram INPUT MAIN OUT SUB OUT PAD LOW PASS 0dB 60dB Direct CH out Ext OUT M S L R BUS VCA FILTER MONITOR Select MONITOR Select MONITOR Select EXT IN 1 6dB Balance Pan Pot CH Lev PHASE I V 26dB Figure 14 Gain and level diagram ...

Страница 36: ...55 000 015 Ed E Mix2000 User Manual 34 This document is the property of AETA and can not be duplicated without authorisation February 2001 Manuel Mix2000 E Ed E doc ...

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