MM-4240 manual
Contents
1. MON Monitor HP Headphone The navigation switch is used to navigate through the table To select change a setting press the center button on the navigation switch 9 2 1 Analog routing busses The routing busses can be paired in the follow busses where each bus consists of two channels 1 MST Master bus output bus 2 MON Monitor out bus output bus 3 HP Headphone bus output bus 4 R L Right and Left mix input bus 5 1 2 Channel 1 and channel 2 input After pre gain and channel fader input bus 6 3 4 Channel 3 and channel 4 input After pre gain and channel fader input bus All analog output busses can be coupled to any of the input busses through the table shown above 9 2 1 Nominal analog level The master and monitor output nominal level N LV can be selected as 4dBu 0dBu or 10dBv depending on which kind of equipment the output bus shall be connected to Use the center button to step through the different levels Note setting the level to 0dBu or 10dBv slightly decreases the dynamic range of the output signal since the attenuation is digital 9 3 Digital multiplexing Each digital output bus can be assigned with any stereo pair represented on the input or mixing bus The table below shows the digital output multiplexing possibilities CH Channel R L 1 2 3 4 D1 Digital 1 D2 Digital 2 The navigation switch is used to navigate thro2. 6 15 VDC Power consumption ldle seen enne 3 7W Power consumption Max 10W Power consumption eene nnns 5 8W Internal battery voltage u uu nnns 5 10VDC Balanced analog inputs ay OO XLR SF 4 TRS Input impedance XLR uU LL u u L u asus nnne nnns 2kO Input impedance TRS U 20kQ Maximum input level XLR u a a nennen 12dBu Maximum input level TRS a 32dBu Frequency esposo uuu lll ll 20Hz 20kHz 1 5dB Equivalent input 0 se uuu l lu asa nennen nnne 130dB 20Hz 20kHz 20 2 20 2 nnns enne 0 012 High pass filter cut off frequency u u en 200Hz M taxImumgali uuu uuu uu 78dB min Limiters Duce qiu uu Em 2ms Release TIM Cit iunc erii tet eret dei np eoo erre de Eee e ERR ede conn 200ms THD limiting TKElz iret edere tco enne Gee 0 396 Input threshold cine erect tette tei ie ee teat aet Re aede us 8dBu Balanced analog outputs EM XLR 3M Output ImID8dan66__ 1kO Maximum output level III dane viele eden eos 18dBu Input to output delay UU UU 0 45mS Output reference level I nnne 10dBv OdBu
3. 10 Mixing with the MM 4240 Mixing audio with the MM 4240 is very straight forward however there are some details that require attention to avoid clipping and produce mixes with high quality sound 10 1 Phantom power The phantom power can be enabled for each input channel if needed The phantom power shall not be enabled unless required since it will draw excessive power and add a small amount of noise to the signal The following parameters apply to the phantom power circuitry Phantom power parameters Maximum total phantom power current 40mA Maximum phantom power on each channel 10 Phantom power series resistance 6 8kO The phantom power circuitry uses a step up regulator It will use more current from the input than drawn on the output The equation below can be used to calculate how much battery current is need to source phantom power Iph phantom current BV Battery voltage 1 1 x 48 BV x Iph 60mA BV 60m For example to source 10mA of phantom current 100mA of battery current is needed if the battery voltage is 9V The phantom power is ramped up so there will be up to 5 seconds delay before the phantom power is available on the input connector 10 2 Pre gain ate so x x gt 1 P1 2 PRE GAIN Lin 45 The pre gain knob is the inner knob of the lower concentric potentiometers The potentiometers are stepped Eleven 6dB steps allow a maximum p
4. Power up the device Go to firmware update in the menu and select firmware update The update will take 2 3 minutes After the internal DSP has been updated the MM 4240 will reboot and update the internal controller When the controller is updating the BLUE led will flash with different frequencies When the update procedure is done the MM 4240 will boot automatically with the new firmware Important information about firmware update 1 Do not remove the SD card during update If the SD card is removed during update the only way to recover is to send the mixer to Marenius Elektronikutveckling AB for initial programming 2 Do not remove batteries or external supply during update 4 4 2014 MM 4240 User Manual v 2 00 27
5. 4dBu Maximu QAI ERE 6dB Recorder SAM PMN rates Rm 48kHz 96 kHz TTE 16 bit 24 bit 0 0 sou be sce eme xen Eum ue pen apu 107dB File To rma u WAV BWF c SDHC SDXC aim FAT32 Digital outputs mini DIN 4p Output level Into 75Q 1V p p Output sampling rate ssssssssesseeeeeeenneen nennen 96 kHz OUTPUT resolUtion pesi uu u uuu uuu usss sasana ca erkennt eu deua toad dad DeL e papaqa 24 bit Dimensions and weight Size HX W XD 5 6 x 14 x 13 8 cm Weight excl batteries u uu uu 900 grams 4 4 2014 MM 4240 User Manual v 2 00 26 MARENIUS ELEKTRONIKUTVECKLING AB www marenius se www marenius com www audiodesign pro Appendix A Firmware update From firmware 2 x x the MM 4240 can be updated from a SD card New firmware releases will be posted on www marenius com The firmware package consists of three zipped files The files shall be extracted to a clean SDHC or SDXC card To update the firmware carefully follow these steps o NO Or F CO N Use fresh batteries Connect external power Extract the firmware package to a clean SDHC or SDXC card Place the SD card into the mixer
6. To enable 48V phantom power on the marked channel press the center button If the phantom power is disabled on all channels the phantom power circuitry is powered down to save power When the phantom power circuitry is powered up there may be a small pop on the input channel The phantom power circuitry is able to source 10mA to each input channel however maximizing the phantom power output current will drain the batteries quickly if operating from the internal batteries 9 1 3 High pass filter An analog secondary order high pass filter may be assigned to each input channel The high pass filter is optimized to remove some of the wind noise that can appear when mixing outdoors The cutoff frequency is fixed to 200Hz 9 1 4 Mid Side matrix A mid side matrix M S can be calculated on each input pair 1 amp 2 or 3 amp 4 where the odd channel is used as mid signal and the even channel is used as side signal A typical mid side setup is illustrated below mid mic cardioid can also be omni or fig 8 side mic figure 8 4 4 2014 MM 4240 User Manual v 2 00 12 MARENIUS ELEKTRONIKUTVECKLING AB www marenius se www marenius com www audiodesign pro 9 2 Analog multiplexing and nominal analog level Each analog output bus can be assigned to any stereo pair represented on the input or mixing bus The table below shows the analog output multiplexing possibilities CH Channel R L 1 2 3 4 N LV MST Master
7. kHz or 96 kHz When using 48 kHz recording sample rate the MM 4240 down samples the internal 96 kHz signal This adds a slight distortion to the recorded signal since all down sampling creates new samples from the original samples The MM 4240 uses a three point interpolation algorithm for down sampling 9 4 3 Recording resolution The recording resolution can be set to 16bit or 24bit When using 24bit resolution the MM 4240 will save the samples in 32bit format When using 16bit recording resolution the MM 4240 will use a truncation algorithm for lowering the resolution 9 4 4 Time code auto record The MM 4240 is able to start and stop recording depending on a time code signal If the feature is turned off the device will function as a regular recorder This option has two choices time code detection DET and time code running RUN The time code auto record on detection DET will automatically start a new recording if a valid time code stream is detected on the time code input The MM 4240 will record as long as the time code signal is represented on the time code input regardless of the record button The time code auto record on running RUN will automatically start a new recording if a valid time code stream is running on the time code input The MM 4240 will record as long as the time code signal is running on the time code input regardless of the record button If the time code is paused the recording will stop If the time code is re
8. with one FPS 1 millisecond if external time code is connected If external time code is not present on the time code input connector the LED will flash with 24FPS The flash occurs exactly when the frame counter becomes zero When the flash occurs the counter in the time code counter in the display will have some delay since it is impossible to display time code before it has been read In the post process the flash can easily be found if the flash is active for more than one frame the first frame showing the flash shall be used as time reference 4 4 2014 MM 4240 User Manual v 2 00 10 MARENIUS ELEKTRONIKUTVECKLING AB www marenius se www marenius com www audiodesign pro 9 Main menu Secondary functions are accessible through the main menu To enter the main menu press the center button of MENU switch To navigate through the menu use the MENU navigation switch The main menu structure is shown in the illustration below The menu will automatically return one step every 15 second until the general screen has been reached A quick exit from the menu can be done using the INFO button Input configuration Analog multiplexing Digital multiplexing Record configuration General setup Exit save Input configuration Channel limiter Channel phantom power Channel high pass filter M S Matrix Back Analog multiplexing Master mux Master nominal level Monitor out m
9. AY PAUSE gt gt and lt lt 12 1 Start playback To start a play back press the play button this option is only available when in default mode primary display is shown and not recording 12 2 Pause playback To pause the current playback press the play button again 12 3 Skip track To skip to the next or previous track briefly press the gt gt or lt lt button If the first or last track is reached the file name will be shown in red The skipping track feature is available in both play and pause mode When skipping tracks in pause mode the file information will not immediately be loaded as this will speed up the procedure 12 4 Fast forward and fast reverse To fast forward or fast reverse the current track hold down the gt gt or lt lt button 12 5 Stop playback To stop the playback use the center button of the recorder navigation switch When stopping playback the device will return to default mode 4 4 2014 MM 4240 User Manual v 2 00 23 MARENIUS ELEKTRONIKUTVECKLING AB www marenius se www marenius com www audiodesign pro 13 Time code and RTC The MM 4240 has a built in linear time code LTC reader The unit automatically jams the internal time code clock when a valid time code is present on the time code BNC connector on the back of the unit If a time code signal is present the MM 4240 will show the incoming time code in the display If the time code is removed the device wil
10. MM 4240 4 channel STEREO MiXER 6 channel recorder Manual FW 2 1 1 Version 2 00 4 4 2014 Table of contents 1 GENERAL DESCRIPTION 2 FRONT PANEL 3 BACK PANEL 3 1 BALANCED XLR FEMALE 1 4 TRS PIN ASSIGNMENT 3 2 BALANCED XLR MALE PIN ASSIGNMENT 3 3 1 4 TRS STEREO PIN ASSIGNMENT 3 4 MINI DIN 4 PIN ASSIGNMENT 4 POWERING THE 4240 5 PRIMARY DISPLAY MODE 6 QUICK ROUTING INFORMATION 7 SOLO 8 VIRTUAL TIME CODE SLATE 9 MAIN MENU 9 1 INPUT CONFIGURATION 9 1 1 Limiters 9 1 2 Phantom power 9 1 3 High pass filter 9 1 4 Mid Side matrix 9 2 ANALOG MULTIPLEXING AND NOMINAL ANALOG LEVEL 9 2 1 Analog routing busses 9 2 1 Nominal analog level 9 3 DIGITAL MULTIPLEXING 9 3 1 Digital routing busses 9 4 RECORD CONFIGURATION 9 4 1 Record selection 9 4 2 Recording sample rate 9 4 3 Recording resolution 9 4 4 Time code auto record 9 5 GENERAL SETUP 9 5 1 File size 9 5 2 Device info 9 5 3 Set time and date 9 5 4 Color settings 9 5 5 Misc settings 10 MIXING WITH THE MM 4240 10 1 PHANTOM POWER 10 2 PRE GAIN 10 3 CHANNEL FADER 10 4 LIMITERS 10 4 1 Taking maximum advantage of the limiters 10 5 MASTER FADER 10 6 PANNING 10 7 MIXING 10 8 TEST TONE 10 9 MONITORING 10 10 DIGITAL OUTPUTS 11 RECORDING WITH THE MM 4240 11 1 SD cARDS 11 2 RECORDING 10 2 1 External record switch Remote control 4 4 2014 NNNN OD 10 12 PLAYBACK TRACKS 12 1 S
11. RENIUS ELEKTRONIKUTVECKLING AB www marenius se www marenius com www audiodesign pro 3 1 Balanced XLR female 1 4 TRS pin assignment Balanced analog audio input Connector type XLR TRS Combo Ground Pin 1 Sleeve Hot Pin 2 Tip Cold Pin 3 Ring 3 2 Balanced XLR male pin assignment Balanced analog audio output Connector type XLR Ground Pin 1 Hot Pin 2 Cold Pin 3 3 3 1 4 TRS stereo pin assignment Unbalanced analog audio input output Connector type TRS Ground Sleeve Left Tip Right Ring 3 4 Mini DIN 4 pin assignment Digital audio output Connector type Mini DIN 4 1 BUS1 2 BUS2 3 BUS1 4 BUS2 4 4 2014 MM 4240 User Manual v 2 00 MARENIUS ELEKTRONIKUTVECKLING AB www marenius se www marenius com www audiodesign pro 4 Powering the 4240 The MM 4240 can be powered from an external power supply or six standard LR14 C type batteries Both NiMH and alkaline batteries can be used The batteries shall be placed in the battery holder as the label on the battery cover describes The battery chemistry shall be set in the main menu to allow the unit to display the correct battery level The MM 4240 can be powered from an external power supply of 6V 15V the external power supply can be a mains adapter batteries or any power supply that is able to delivery at least 2A of current Ev
12. TART PLAYBACK 12 2 PAUSE PLAYBACK 12 3 SKIP TRACK 12 4 FAST FORWARD AND FAST REVERSE 12 5 STOP PLAYBACK 13 TIME CODE AND RTC 14 BLOCK DIAGRAMS 14 1 CHANNEL INPUT BLOCK DIAGRAM 14 2 MASTER OUTPUT BLOCK DIAGRAM 14 3 HEADPHONE OUTPUT BLOCK DIAGRAM 14 4 MONITOR OUTPUT BLOCK DIAGRAM 15 TECHNICAL SPECIFICATIONS APPENDIX A FIRMWARE UPDATE 4 4 2014 MARENIUS ELEKTRONIKUTVECKLING AB www marenius se www marenius com www audiodesign pro 1 General description The MM 4240 is a 4 channel stereo mixer and a 6 channel recorder in a very compact format The unit has 4 high quality digitally controlled THAT Corporation microphone pre amps There are 5 stereo output busses 1 master 1 monitor 2 digital and 1 headphone output The output busses can be individually assigned to any input pair or the master mix bus The unit is able to do mid side matrix on each input pair An extremely wide viewing angle and very clear OLED display is used for metering menus and information The MM 4240 has an internal sample rate of 96 kHz and a lull 24 bit input to output resolution The recorder can be setup for other sample rates and resolutions The unit has dedicated potentiometers and switches for the most commonly used functions such as pre gain pan faders record test tone monitoring etc The master faders are combined with ultra low THD opto limiters Each pre gain amplifier has a clipping LED allowing the user to set op
13. ation about the SD card usage in percent If no card is inserted into the SD card slot the value is External power The power symbol is lit when an external power source is attached to the unit Battery level Displays current internal battery level The symbol is filled with green or red depending on the current level If the symbol is flashing replace the batteries as soon as possible The MM 4240 will only run for about 10 minutes when the battery symbol is flashing Note For a true display of the battery level the battery chemistry must be set Channel meter rows The meter row shows the current channel input level and the CHx indicator If the limiter for the channel is enabled and the limiter is active a LIM symbol appears to the right of the meter If the limiter for the channel is disabled a CLP symbol is shown if the level is too high The clip indication shown in the display doesn t include pre gain clip This is shown by the CLIP LED on the front panel Channel information rows Below each channel the current channel setting is shown The following symbols can appear in the channel information rows e xdB Current pre gain dB LIM Limiter enabled PH 48V phantom power enabled HPF High pass filter enable MID MS matrix enable mid channel SIDE MS matrix enable side channel Record test tone field If the MM 4240 is recording a REC symbol is lit in the field If the test to
14. d during the post production phase If the buffer size is exceeded there will be sample loss between the files If the MM 4240 doesn t accept the card placed in the socket the red LED on the front panel will flash rapidly The user is able to view the current buffer usage when holding down the info button in recording mode Under device info in the menu the maximum buffer usage since power on can be viewed If the maximum buffer usage is 10096 the SD card is too slow for the record setup being used Normally SD cards can be formatted into FAT32 directly under windows however when using larger SDXC cards a formatting utility must be used A free copy of EaseUS partition master be downloaded from http www easeus com download epmf download html Important notes on SD cards Do not store any other files than the recordings made by the MM 4240 on the card Always begin with a clean card Format the SD card into FAT32 only SD cards are electrostatic sensitive Do not delete single files on the cards this will end up in corrupt recordings If the card is fragmented the recordings will be corrupt Do not remove the SD card when recording or playing tracks a er EIS c 4 4 2014 MM 4240 User Manual v 2 00 20 MARENIUS ELEKTRONIKUTVECKLING AB www marenius se www marenius com www audiodesign pro 11 2 Recording To start a new recording push the recorder navigation switch upwards When the recorder is activated
15. e gain until it is clipping at a normal input level 2 Turn down the pre gain 12 24dB 2 4 steps 3 Turn up the channel fader to max 10 5 Master fader The master fader allows the user to fade in and fade out the mix The master fader has a digital gain stage allowing the mix to be gained up 6dB The fader can also be used as volume control when playing tracks from the SD card this feature can be enabled in the menu The scale of the master fader is absolute and the same scale is used when enabled in playback mode 10 6 Panning The panning knob is the outer knob of the lower concentric potentiometer The MM 4240 uses a straight 6dB panning stage this means that when the panning potentiometer is straight up 50 of the input signal is sent to the left channel and 50 of the input signal is sent to the right channel 10 7 Mixing The mixing stage of the MM 4240 is a classic summing mixer Since all input signals are added together the mix may be clipped The user must be aware of the fact that two identical input signals summed together will result in a 6dB higher output signal If the mix is clipped this is shown as a CLP symbol next to the R and or L meter in the display 10 8 Test tone The 1 kHz test tone can be enabled with the test tone switch on the front panel The test tone level is set to 18dBFS and will appear on all analog output busses The test tone will also appear on the digital outputs if the digital multi
16. en if the MM 4240 doesn t draw 2A the power supply must be able to handle load transients The internal batteries are disconnected from the unit when an external power supply is connected to the unit Therefore it is very important that the voltage level of the external power supply doesn t drop below 6V When a valid external power supply and or six LR14 batteries has been connected to the unit turn the headphone potentiometer clockwise to power on the unit 5 Primary display mode When the MM 4240 is powered up the primary display mode is entered The unit displays meters recording settings channel settings time code power information and SD card usage The image below shows the primary display mode 9900 977 kHz 24b Zch 122 f 00 00 00 OCC X 4 4 2014 MM 4240 User Manual v 2 00 8 MARENIUS ELEKTRONIKUTVECKLING AB www marenius se www marenius com www audiodesign pro 10 11 Current recording sample rate The recording sample rate can be changed between 48kHz and 96kHz The internal sample rate of the unit is always 96kHz It is recommended to record at 96kHz to minimize recording distortion since a sample rate conversion always adds distortion to the converted signal Current recording bit depth The recording bit depth can be changed between 16 bit and 24 bit stored as 32 bit Number of recording channels Display the current number of channels that are enabled for recording SD Card usage Shows inform
17. ettings The misc settings menu sets up the battery chemistry the play attenuator and time code correction The battery chemistry must be set to the battery chemistry used for a correct battery level meter The choices are e Alkaline e NiMH Other batteries may be used as long as the voltage stays between 5V and 10V however the battery level indicator will be incorrect The play attenuator can be enabled or disabled When the attenuator is enabled the master attenuator potentiometer can be used to control the playback volume between dB and 6dB The playback attenuator can be disabled to avoid conflict with the master attenuator when changing between playback mode and normal mode When the playback attenuator is disabled the playback level is equal to the level of the file The time code correction can be adjusted 1 frame for 24FPS 25FPS 30FPS and 29 97FPS The adjustment adds or subtracts one frame from the BWF header When the time code correction is set to 0 frames the recording will start when the frame counter switches to zero however some setups use the time code after it has been read In that case the time code will be one frame late The Misc menu also includes a firmware update option for information about the firmware update procedure see appendix Appendix A Firmware update 4 4 2014 MM 4240 User Manual v 2 00 16 MARENIUS ELEKTRONIKUTVECKLING AB www marenius se www marenius com www audiodesign pro
18. evel The symbol is filled with green or red depending on the current level If the symbol is flashing replace the batteries as soon as possible The mixer will only run for about 10 minutes when the battery is flashing Note f the symbol shall display the correct battery level the battery chemistry must be correctly selected 4 4 2014 MM 4240 User Manual v 2 00 22 MARENIUS ELEKTRONIKUTVECKLING AB www marenius se www marenius com www audiodesign pro 7 Track number track meter The MM 4240 always shows six tracks even if the recording only has two or four tracks The highlighted tracks are the tracks that currently are presented on the output busses To switch between outgoing tracks the up and down switch of the menu navigation key is used If a track doesn t contain any data the output busses will be muted 8 File information Displays the name and size of the current file 9 Track location bar and time code information When entering playback mode or changing tracks the time code of the file is shown After three seconds the time code information is faded out and the track location bar is shown If the user wants to display the time code information again the info button can be pressed The location bar shows the current position of the track being played 10 Time location of the file The counter shows the current track position in hours minutes seconds and hundredths 11 Play mode The play mode area will display PL
19. he five way navigation switch controls the recorder and the virtual time code slate The following switch directions are used CENTER Stop UP Start new recording Enter play mode play pause the last file recorded is automatically played when entering the play mode Pressing the button down when playing file will pause the playback Pressing the button down again will resume play Next track Fast forward only used in play mode RIGHT Move the button to the right to fast forward If the MM 4240 is in recording or idle mode a virtual time code slate can be displayed on the screen using the RIGHT button Previous track Fast reverse only used in play mode LEFT Move the button to the left to fast reverse When pressing the LEFT button in record mode a file split will occur Test tone Enables the test tone output on all output busses The test tone switch cannot be activated when the device is recording or playing tracks Info button Holding down the info button will display quick information about the bus routing and real time clock If the info switch is released when playing a file the unit will re display the time code information for the current file 4 4 2014 MM 4240 User Manual v 2 00 MARENIUS ELEKTRONIKUTVECKLING AB www marenius se www marenius com www audiodesign pro 10 11 12 12 13 Monitor selection switch The monitor selection switch allows the use
20. l be showing an S after the time code The S means that the device is jammed When the S disappears a new jamming sequence is required The internal supercap will hold the time code when the device is powered off however it is recommended to perform a new jam if the device has been switched off therefore the S won t be shown when re powering the unit The time code will be stored in the BWF file If a recording has been split into several files all files will have the same time code stamp in the BWF file making it easy to locate the files The internal real time clock is only used for time stamping the files and allowing the user to view the time when pressing the info button 4 4 2014 MM 4240 User Manual v 2 00 24 MARENIUS ELEKTRONIKUTVECKLING AB www marenius se www marenius com www audiodesign pro 14 Block diagrams 14 1 Channel input block diagram 11 step switch Digital domain 14 2 Master output block diagram Digital domain DAC OUT L RET EISE FILTER XLR DAC OUT L 14 3 Headphone output block diagram DAC FILTER DAC FILTER 14 4 Monitor output block diagram Digital domain DAC FILTER DAC FILTER 4 4 2014 MM 4240 User Manual v 2 00 25 MARENIUS ELEKTRONIKUTVECKLING AB www marenius se www marenius com www audiodesign pro 15 Technical specifications Power supply External supply voltage
21. n screen This is useful to get a hint of the speed of the SD card if the buffer level continuously fills to near 100 the SD card is alarmingly slow for the current record setup The following routing information is shown when holding down the quick info button MASTER OUT MONITOR OUT HEADPHONE OUT DIGITAL OUT 1 DIGITAL OUT 2 RECORD Not shown when playback is activated BUFFER LEVEL In record mode FILES In idle and play mode REMAINING RECORD TIME In idle mode 7 Solo The solo function is shared with the menu navigator button To solo one of the input channels to the headphone output use the UP Channel 1 RIGHT Channel 2 DOWN channel 3 or LEFT button Channel 4 When the channel is sent monophonic to the headphone channel the CHx indicator is highlighted The solo function is only available in primary display mode and in recording mode See Recording with the MM 4240 for color coding of CHx indicator 8 Virtual time code slate The MM 4240 has a virtual time code slate function The feature is useful when recording video with cameras that doesn t have a time code function When the mixer is in recording or idle mode the right button of the recorder navigation key can be pressed The virtual time code slate will be displayed for 30 seconds allowing the user to film the mixer during this time To manually exit the feature press the right button again When filming the MM 4240 the LED will flash
22. ne is enabled a 1kHz symbol is flashing in the field Time code display area The time code display area can show time code with three or four numbers If an external time code generator is connected to the MM 4240 the time code is displayed with four numbers otherwise only three numbers are displayed If the MM 4240 is jam synchronized and the internal time code counter is valid an S is displayed to the right of the time code When recording the display area shows the elapsed recording time Left and right mix level The meters display the level of the stereo mix A CLP symbol may appear to the right of the meter if the mix is clipped 4 4 2014 MM 4240 User Manual v 2 00 MARENIUS ELEKTRONIKUTVECKLING AB www marenius se www marenius com www audiodesign pro 6 Quick routing information The MM 4240 is equipped with an INFO button allowing the user to quickly view routing information The quick info screen displays routing for all five output busses channels enabled for recording and real time clock The quick info also displays the number of files on the SD card SD card usage in percent and remaining recording time at current configuration The MM 4240 automatically switched between card usage and remaining recording time when the INFO button is hold In play mode the remaining recording time will not be displayed If the device is recording the current internal buffer usage is displayed in the quick informatio
23. nfigured file size is reached 10 2 1 External record switch Remote control The MM 4240 has a N O switch input connector on the back of the unit when shorting the connector the mixer will start to record and when the short is removed the unit will stop recording Note 1 When using an external record switch the cable must not be longer than 10 meters Note 2 When using an external record switch the main cannot be used to stop the recording 4 4 2014 MM 4240 User Manual v 2 00 21 MARENIUS ELEKTRONIKUTVECKLING AB www marenius se www marenius com www audiodesign pro 12 Playback tracks The MM 4240 has an internal playback feature allowing the user to play recorded files The MM 4240 output two selectable tracks on all output busses To change between tracks use the up and down key of the menu navigation key If the PLAY ATT is enabled the user may use the master fader as a volume control The screen below shows the MM 4240 screen when playing files from the SD card 246 ch PE 1 File sample rate The sample rate of the recorded file 2 File bit depth The resolution of the recorded file 3 Number of tracks in the files Display the number of tracks in the polyphonic BWF file 4 SD Card usage Shows information about the SD card usage 5 External power The power symbol is lit when an external power source is attached to the unit 6 Battery level Displays current internal battery l
24. o the headphone output from the front panel monitor switch 4 Input channels XLR female 1 4 TRS connector Four input channels for microphone or line level input 5 Digital output busses 2 stereo pairs mini DIN 4 connector Two standard S PDIF output streams The MM 4240 is shipped with a mini DIN to 2xBNC converter cable The output voltage is set accordingly to the AES3 ID standard if the output is connected to an AES3 digital input a voltage level converter may be needed The outputs are transformer coupled 6 Linear time code input BNC connector The time code input accepts standard linear time code all frame rates are supported 4 4 2014 MM 4240 User Manual v 2 00 5 MARENIUS ELEKTRONIKUTVECKLING AB www marenius se www marenius com www audiodesign pro External power input An external power source may be connected to the unit The voltage level must be between 6V and 15V The power supply shall be able to source at least 2A for handling current transients drawn by the unit The center pin of the connector is positive supply Note voltage levels above 15V will damage the unit Monitor output attenuation pad The monitor output may be padded 20dB for connection to low level inputs of e g cameras Remote control The remote control input can be used to connect an external record switch When the switch is closed the MM 4240 is recording until the switch is opened 4 4 2014 MM 4240 User Manual v 2 00 MA
25. plexer is set to MST The test tone level follows the menu configured nominal level of the output for example if the nominal level is set to 4dBu the test tone output signal will be 14dBu 4 4 2014 MM 4240 User Manual v 2 00 18 MARENIUS ELEKTRONIKUTVECKLING AB www marenius se www marenius com www audiodesign pro 10 9 Monitoring The MM 4240 has a monitor input which can be routed directly to the headphone for fast checking of external equipment The MM 4240 has a dedicated switch on the front panel for switching between internal audio and monitor audio 10 10 Digital outputs The MM 4240 has two digital S PDIF outputs The digital outputs can be directly connected to channel 1 2 3 4 or R L master output When configured to route the master output to the digital output the analog multiplexer of the master output will affect the digital output 4 4 2014 MM 4240 User Manual v 2 00 MARENIUS ELEKTRONIKUTVECKLING AB www marenius se www marenius com www audiodesign pro 11 Recording with the MM 4240 The MM 4240 can record up to 6 tracks 24bit 96 kHz The recorder has its own dedicated 5 way navigation switch The recorder can record on SDHC and SDXC cards formatted to the FAT32 standard The files are stored in the root directory of the SD card named RECxxxxx WAV where xxxxx is a number the number will automatically increase one unit for each track The tracks are stored in polyphonic BWF format The BWF fo
26. r to route either the internal associated headphone output INT or the monitor input EXT to the headphones Channel fader one for each input channel The channel faders are used when mixing tracks adjustable between and 18dB When the fader is above 0dB a very low distortion limiter will limit the signal if the headroom is too low the limiter has to be enabled in the main menu Pan one for each channel outer potentiometer Left and right pan for each channel Pre gain one for each channel inner potentiometer Digitally controlled analog gain control The gain can be set in 6dB steps 0 60dB Pre gain CLIP The CLIP LED is illuminated if the pre gain stage is clipping 4 4 2014 MM 4240 User Manual v 2 00 MARENIUS ELEKTRONIKUTVECKLING AB www marenius se www marenius com www audiodesign pro 3 Back panel mm MASTER OUT LEFT MONITOR IN INPUT CH 4 INPUT CH 1 l PNG gt MONOUT 7 MONITOR REMOTE 08 J OUT CTRL i NIUS ELEKTRONIKUTVECKLING MAREI cR x SE42805 V FR LUNDA DCINPUT S PDIF OUT S wor aucodosion pro 6 15 V i 10 VA E MASTER OUT RIGHT TAMAS MM 4240 Las 1 Master output bus XLR male connectors The master output channels LEFT and RIGHT 2 Monitor output bus 1 4 TRS connector The monitor output channels LEFT and RIGHT 3 Monitor input 1 4 TRS connector Monitor input the input can be routed directly t
27. re gain of 60dB A clip LED for each pre gain is located next to the knob The pre gain for each channel is also shown in the OLED display as the figure above illustrates For optimal performance the pre gain shall be set as close to the clipping level as possible 10 3 Channel fader Each channel has a fader for controlling the mix The fader is adjustable between and 18dB min The fader has been optimized for controlling the level from 6dB to 18dB As for the pre gain the channel fader shall be set as close to the clipping level as possible for optimal performance 4 4 2014 MM 4240 User Manual v 2 00 17 MARENIUS ELEKTRONIKUTVECKLING AB www marenius se www marenius com www audiodesign pro 10 4 Limiters Each channel has a high quality ultralow THD opto limiter The limiter is assigned to the channel fader and can be enabled in the menu Since the limiter only addresses the channel fader a pre gain clip won t be limited The limiter parameters are listed in the table below Limiter parameters Attack time 2mS Release time 200mS THD limiting 1kHz sine 0 3 Limiter threshold 8dBu 10 4 1 Taking maximum advantage of the limiters The limiters are only assigned to the channel faders and hence only active if the signal after the pre gain is clipped Clipping at the pre gain stage will not be handled To maximize the limiters potential the follow steps shall be carried out 1 Turn up the pr
28. rmat is fully compatible with PCM wave For more information regarding BWF see http www ebu ch 11 1 SD cards The SD card socket is located below the display and is a push push socket The SD card should be placed in the socket faced down There are many different types of SD cards on the market Each SD card has an internal controller a flash memory and a buffer memory The speed class of the SD card specifies the average writing speed to the card when writing optimal buffer sizes However the speed class doesn t have anything to do with access times even if two cards looks the same on the outside they may have different internal chips The MM 4240 has an internal buffer size of 24 576MB which is equal to 10 66 seconds when recording 6 channels at 24bit 96 kHz This means that the SD card must have a faster access time than 10 66 sec and be able to empty the buffer faster than new samples are added to the internal buffer The FAT32 standard specifies a maximum file size of 4GB which means that the MM 4240 has to split the recording if the file size is larger The file size can be set to other sizes than 4GB using the menu When the file size is exceeded the MM 4240 writes out file information which will take some time depending on the file size and the random access writing speed of the card If the buffer size isn t exceeded during this time the MM 4240 will be able to split the files sample correct Sample correct recordings can easily be merge
29. sumed a new track will be recorded 4 4 2014 MM 4240 User Manual v 2 00 14 MARENIUS ELEKTRONIKUTVECKLING AB www marenius se www marenius com www audiodesign pro 9 5 General setup The general setup menu handles various settings of the MM 4240 9 5 1 File size This option sets the recording file size The user is able to choose between 128MB 265MB 512MB 1GB 2GB 4GB The MM 4240 will split files sample accurate so files joined together in post production will be seamless However if the SD card is to slow this will fail since the internal buffer will overflow To avoid overflow the file size may be decreased This requires some trial and error on the used SD card to find the limits 9 5 2 Device info This screen shows the following information about the MM 4240 e Unique serial number e Firmware version e Battery voltage e Maximum recording buffer usage since last power on 9 5 3 Set time and date The internal real time clock can be set with this menu option Use the five way navigation key to setup the clock To change a value unlock it with the center button 9 5 4 Color settings The user is able to change the colors used in the menu and the colors used in the channel information rows The available colors are PURPLE RED GREEN BLUE DARK RED YELLOW PINK 4 4 2014 MM 4240 User Manual v 2 00 15 MARENIUS ELEKTRONIKUTVECKLING AB www marenius se www marenius com www audiodesign pro 9 5 5 Misc s
30. the status LED will turn red and a REC symbol is shown in the display The LED will turn on after the REC symbol max 1 sec since the MM 4240 is synchronized to the internal or external time code clock The samples are saved when the LED is lit When recording the time code will freeze and fade away and elapsed recording time will be shown instead To stop a recording press the center button on the recording control When the stop button is pressed the MM 4240 will store the remaining samples in the buffer and write out file information when the MM 4240 is finishing the recording the status LED will be flashing along with a BUSY symbol in the display Do not remove the SD card during this procedure The MM 4240 is able to automatically record on time code detection or time code running When this option is used the recorder navigation switch may be locked depending on the time code status The time code recording feature is always prioritized over the recording buttons The display shows what tracks are recorded by changing the color of CHx R and or L The following colors are used WHITE Channel is enabled for recording RED Channel is recorded GREEN Channel is disabled for recording When recording a manual sample correct file split can be done using the LEFT button Fast reverse This feature will work in all recording configurations The MM 4240 will automatically split files sample correct when the co
31. timum pre gain for each scenario Linear time code decoding can be used to synchronize the unit to external equipment MM 4240 can be powered from standard LR14 C type batteries and or an external 6 15V power supply A supercap is used instead of a traditional backup battery for real time clock and LTC meaning no internal battery needs to be replaced All recorded media is stored on a removable SD card in BWF format The MM 4240 is housed in a heavy duty aluminum cabinet MASTER OUT LEFT 2 4 4 2014 MM 4240 User Manual v 2 00 1 MARENIUS ELEKTRONIKUTVECKLING AB www marenius se www marenius com www audiodesign pro 2 Front panel C MARENIUS venu de lt amp SLATE TONE MONITOR VU E lt 1 2 gt Q NFO EXT INT STATUS _ ra l NS 99 J i 6 6 Wu ue 9 2 o 12 o 12 4 4 w 18 18 18 6 GAIN dB CH 2 GAIN dB CH 3 GAIN dB CH 4 12 0 AP at p a tp de ds 60 60 36 30 24 Z den uem P 4 MM 4 F E F 6 4 CH STERE _ d 6 CH RECORDE x o 27 i 27 f MASTER a 8 5 POWER as SD MEMORY CARD p n dr Hiro dB dB dB FACE DOWN Li d FR Li ad FR Lia R OLED Display Displays operation information settings and menus SD Card slot The SD card slot accepts SDHC and SDXC cards The card must be placed in the connector facing downwards Note do not use force
32. ugh the table To select change a setting press the center button on the navigation switch 9 3 1 Digital routing busses The routing busses can be paired in the follow busses where each bus consists of two channels 1 D1 Digital 1 output bus output bus 2 D2 Digital 2 output bus output bus 3 R L Master output bus input bus 4 1 2 Channel 1 and channel 2 input After pre gain and channel fader input bus 5 3 4 Channel 3 and channel 4 input After pre gain and channel fader input bus All digital output busses can be coupled to any of the input busses through the table shown above 4 4 2014 MM 4240 User Manual v 2 00 13 MARENIUS ELEKTRONIKUTVECKLING AB www marenius se www marenius com www audiodesign pro 9 4 Record configuration The record configuration menu sets up all recording parameters except the file size which is handled under the general setup menu This menu option is not available while the MM 4240 is recording The sample rate and resolution only affects the recording and not the internal processing of the MM 4240 9 4 1 Record selection The table shown in recording configuration sets the channels to be recorded The user can select any combination of 1 2 3 4 and R L where 1 2 and 3 4 are input channels 1 2 3 and 4 after the pre gain and the channel fader and R L is the stereo mix 9 4 2 Recording sample rate The recording sample rate can be set to 48
33. ux Master nominal level Headphone mux Digital multiplexing Digital outout 1 mux m Record configuration Channel selection Sample rate Resolution Time code auto record General setup File settings Device info Set time amp date Digital outout 2 mux Back Set file size Show device info Set time and date Menu color Channel info color Color settings Misc settings Back 4 4 2014 MM 4240 User Manual v 2 00 Battery chemistry Play attenuator TC correction Firmware update 11 MARENIUS ELEKTRONIKUTVECKLING AB www marenius se www marenius com www audiodesign pro 9 1 Input configuration The input configuration menu controls all four input channels The table below illustrates the input configuration menu CH Channel 1 2 3 4 LIM Limiter PH 48V HPF High pass M S MS Matrix The navigation switch is used to navigate through the table To enable or disable a function on a channel press the center button on the navigation switch 9 1 1 Limiters The MM 4240 is fitted with four ultra low THD opto limiters To enable a limiter on a channel press the center button then an X is displayed for the selected channel The limiters are only connected to the channel faders These limiters are completely analog for perfection in sound quality 9 1 2 Phantom power
34. when inserting or removing card Headphone volume Power switch outer potentiometer Controls the volume for the headphone jack at full CCW the unit is shut down To POWER ON the device turn the knob CW Master fader inner potentiometer The master fader gain can be controlled from to 6dB The current setting is also shown on the display when changing the gain The master gain can be switched of when playing files The master fader affects the mix bus Headphone jack The headphone jack accepts headphones with an impedance of 32 6000 Note high volume can cause damage to your ears always turn the headphone volume down before inserting the headphones plug 4 4 2014 MM 4240 User Manual v 2 00 MARENIUS ELEKTRONIKUTVECKLING AB www marenius se www marenius com www audiodesign pro Menu Solo navigation switch The Menu Solo navigation switch is a five direction switch To enter the main menu press the center key then use up down rightand left keys to navigate in the menu When using up down right and left keys outside the menu not in play mode each channel will be sent solo to the headphones Status LED The status led has three colors each color represents a specific operation mode Yi When the LED is red the device is in recording mode xt When the LED is green the device is in play mode or reading from SD card Yt When the LED is blue the device output a test tone on all output busses Recorder control T
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