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1. STOP Using the Session Log PRINT RESET 14 1 3 1 74 SYNC Synchronisation External Internal 11 1 38 UTILITY PPM Utility Functions 14 1 61 WINDOW FFT Windowing Functions 13 6 58 WR PROTECT Write Protect 6 9 ZOOM FFT Zoom Function 13 4 55 MSD600 200 Series User s Manual 1 Introduction Congratulations By purchasing a Master Stereo Display MSD from DK Audio you have decided to actually See What you Hear We are certain that your Master Stereo Display will prove an invaluable tool in your daily work If you have any suggestions or points of view for future functions or options we welcome your com ments Please write to DK Audio at the address on the rear page of this manual or call 45 44 85 02 55 You can also use the enclosed Registration Card to send us your remarks and observations Your Registration Card is also the easiest way for you to receive up to date information from DK Audio on future Master Stereo Display prod ucts Please also check our website at www dk audio com 1 1 This Manual To obtain higher software reliability plus a simpler way to ensure flawless software support tracking and in field software upgrade ability all newer models of the MSD family have been designed around a single common operating system OS Under power up each MSD informs the OS about which MSD and model number it is running on forcing the OS to configure itself according to the hardware and functions
2. Format 5 1 MSD600M Preset 5 MSD600C 5 1 Preset 2 Format 6 0 MSD600M Preset 6 Format 7 1 MSD600M Preset 7 MSD600 200 Series User s Manual To set up the MSD for a given surround sound for mat the specific Matrix outputs Line 55 62 CENT C 1 C 7 have to be assigned to a source input The number of outputs assigned determines the surround sound format selected Matrix Jelly Fish Corresponding PPM Bargraphs Physical Surround Display Label Number Label Source Sound Source CENT CENTER CH 3 C Analogue 2 L C 1 R CH 2 R Analogue 1 R C 2 RS CH 4 S Analogue 2 L C 3 LS CH 4 S Analogue 2 L C 4 L CH 1 L Analogue 1 L Comparison between the Physical Input source and the labelling used on the Jelly FishTM and the PPM Bargraph Based on MSD600M Preset 5 8 MSD600C 5 1 Preset 2 89 90 MSD600 200 Series User s Manual As it is the case with all of the surround sound fac tory presets it is recommended that the destination channels allocated to the surround sound monitor is assigned via the PPM meters clockwise follow ing Matrix line 55 62 CENT C 1 C 7 allocated to the PPM meter and assigned to the respective physical audio input In that way the actual physical audio input correspond to a given PPM This also means that only one cross point in the matrix have to change if the actual set up differ from the preset or if a new source for a given physical input has to be sele
3. To control the visual appearance for an individual PPM bargraph first select one of the output column line numbers from 65 95 and press the soft key OPTION The colour and width can be set individually for each PPM channel There are six colours to choose from green yellow blue magenta light blue amp white The width of the bargraphs can be altered according to your display requirements There are three bargraph widths to choose from X WIDE WIDE NORMAL Selecting SPACE will enter a space between the last PPM bargraph and the one currently selected This special presentation option is handy when dis playing many PPM s in the Main Menu Use the Line Up Down keys 1 to determine the bargraph width you require Press the SELECT key to confirm the selection Note Bargraph width selections do not take place until SELECT you have exited the Matrix Option menu and returned to the Main Menu To change colour of the PPM bars select the area you want to change SET COLOUR SET TRACK or SET UNDER SET COLOUR determines the colour of the PPM bar itself SET TRACK colour is the track or background colour of the PPM bar This would normally be selected black and thus be invisible SET UNDER is the PPM bar from the underload mark to the bottom To select a colour for the full length PPM both SET UNDER and SET COLOUR must have same colours After pressing the SELECT key at the selected area an option menu with six
4. s selectable from the Matrix Output Column number 33 48 When the MONO Key is highlighted green navi gation in the Matrix Output Column is Channel by the same options while the PPM Meter has its own set In contrast to the Main Menu functions the two Spectrum Analysers supported by the MSD the FFT and 1 3 Octave are based entirely on settings found under there own respective menus and therefore do not use an option menu accessible from the Matrix Channel based Mono When de selected the navi gation is based on all channels arranged in stereo pairs MSD600 200 Series User s Manual 17 8 2 2 Phase Correlation Audio Vector Oscilloscope and Jelly Fish Option Menu for the Matrix Output column number 53 62 Three of the main metering functions in the MSD Jelly Fish To enter this menu press the are sharing one of the available Matrix Option OPTION key when one of the Matrix Output col Menus These are the Phase Correlation Meter the umn numbers 53 62 is selected Audio Vector Oscilloscope and the surround sound 8 2 2 1 Integration Time SLOW FAST The Various Meter functions under the Option set mode is without any integration while the Slow tings can operate in either FAST or SLOW mode mode is with a normal 10ms integration time Fast and Slow set the meter integration time Fast When selected the small square green indicator is lit shutting off the previously selected option 18 MSD600 200 S
5. EXIT SYNC LCD SET REF The SETUP Menu is one of the new menus found When entering the SETUP Menu the External in Software Version 3 2 However the underlying Synchronisation Status is displayed showing if functions Back Light and Set Reference are well External Sync is selected and if any External Sync known functions from earlier versions Error has been detected MSD600 200 Series User s Manual 37 e Only the MSD600M is using the shown SYNC Menu to select an External Sync source For all other supported MSD models an external sync source is selected via the AES Input Option Menu Please see section 8 2 4 in this manual Since the External Sync function heavily relies on the MSD s hardware configuration it may be required to update the units firmware as well as this software version to enable the function Some older MSD600M models do not support the External Sync Function On these models the SYNC Menu will not be available Please visit our web site www dk audio com tech support for information regarding latest Firmware and Software versions 38 MSD600 200 Series User s Manual 11 1 Synchronisation External Internal SYNC As mentioned in section 11 the External Synchronisation menu is only supported by the MSD600M with the related Firmware Hardware configuration When External Sync is enabled green square high lighted the MSD600M will try to sync up against the AES 3 signal on the specific External Sync Inpu
6. Pink amp White Noise Test Signals R WHT R PKN P WHT PRESET Preset Menu PRINT Using the Session Log STOP RESET PULSE Pulse Modulation Tone Generator P WHT Pink amp White Noise Test Signals R WHT R PKN P PNK RECALL Recall a Preset REF Setting Reference and Overs for the DMU 30 Scale OVERS REL Relative Offset Display SET REL CURSOR RESET Software Hardware Reset RESET Using the Session Log STOP PRINT MSD600 200 Series User s Manual Section 8 1 10 4 14 1 3 1 10 2 10 4 9 2 14 1 1 1 13 2 14 1 3 1 Page 35 28 74 34 35 30 64 54 74 Section R PKN Pink amp White Noise Test Signals R WHT P WHT P PNK 10 4 R WHT Pink amp White Noise Test Signals R PKN P WHT P PNK 10 4 SAVE Save a Preset 9 3 SCALE PPM Scales 14 2 SCOPCOL Colour Select 8 2 2 3 SELECT Navigation the Matrix 1 V1 PgUp PgDn 8 1 SES LOG Session Log 14 1 3 SET REF Set Meter Reference 11 3 SET REL Relative Offset Display REL CURSOR 13 2 SETUP Ballistic Setup for the 1 3 Octave Analyser 12 1 SIG GEN Signal Generator Menu 10 SINE Sine Wave Test Tone Generator 10 1 SLOW Integration Time FAST 8 2 2 1 START Using the LEQ m STOP 14 1 2 3 STOP Using the LEQ m START 14 1 2 3 Page 35 35 31 77 19 14 72 40 54 44 33 34 17 71 71 MSD600 200 Series User s Manual
7. SET REL CURSOR 4 t The Display Relative function works in conjunction with the Set relative SET REL function and the CURSOR Select function When applying the display relative function by the REL key the MSD tries to shift the whole FFT curve up or down relative to the SET REL Level until the cursor level reading is equal to zero dB The relative level is defined as the measured Level at the cursor location at the exact time when pressing the SET REL Key Use the arrow Left Right CURSOR keys lt 5 to select a spe cific bar of the FFT The numeric frequency of the selected bar and the actual measured level is dis played in the bottom right corner of the FFT dis play The SET REL key will only manipulate the on screen data and should generally not be used to raise a weak signal since accuracy will be lost The resolution of the spectrum analyser is far higher than that of the screen resolution Consequently not all analysis results are displayed directly on screen However the frequency cursor can be used to obtain this hidden data since it will display the exact frequency resolution in the numeric field display Note that the numeric readout corresponds to the selected function The numeric values always follow the actual data on the screen i e if any of the functions REL and REF have been selected the numeric readout will reflect this MSD600 200 Series User s Manual 55 13 3 Hold Maximum Level
8. START STOP and TRIP functions MSD600 200 Series User s Manual 69 EXIT LEQ SET EXIT EXIT CR CT To set the TRIP overload threshold and the When the Measured LEQ m value exceed the Calibration function CAL enter the LEQ SET TRIP threshold the TRIP Indicator will turn red Menu Both functions are set by the arrow clearly indicating that the LEQ m level has Up Down keys f J exceeded the selected maximum level As an example typical loudness level for a movie the The TRIP overload threshold refers to the TRIP atre would be 85 dB The TRIP Threshold can be indicator found on the LEQ m numeric display set in the range from 78 to 93 dB 70 MSD600 200 Series User s Manual 14 1 2 2 Calibrating the LEQ m CAL The LEQ m measurement is meant as a way to measure the absolute sound pressure over time in a controlled acoustic listening environment where the direct relation between the electrically mea sured audio signal and the actual acoustic sound pressure are known The LEQ m measurement is based on a CCIR 468 modified weighting filter emulating the frequency response for the human ear Since the LEQ m measurement is based on a acoustic system the electrically measured signal level is converted to an energy level This means that contrary to an electrical signal where a doub ling in energy is equal to 6 dB an equivalent doub ling measured by the LEQ m is equal to 3 dB Because of this pseudo acoustic sy
9. HOLD The FFT HOLD function will disable the curve fall of the level within each frequency band since the back function and thus show the maximum value HOLD key was activated 13 4 FFT Zoom Function ZOOM The full frequency range of the spectrum analyser range of 4 Hz to 2 353 kHz When activating this can be changed by a factor of ten This means that function by the ZOOM key a much more detailed the display will alter from showing a range of 46 Hz look at the important low frequency signals is to 23 531 kHz to showing only the lower frequency obtained 56 MSD600 200 Series User s Manual 13 5 Relative Memory FFT Measurements OP MODE Serra ET The OP MODE menu is used to display the spec trum analysis relative to a temporary or predefined reference curve The relative display functions can all be active at the same time To access the OP MODE menu press the OP MODE key When measuring against any of the two reference curves the FFT result is displayed relative to this curve frequency bar by frequency bar In that way if measuring an Input signal relative to itself it will result in a flat response around 0 dB This is sim ply done by first pressing the SETMEM key follow by the MEM key x SET MEM The memory function is sensitive to the Write Protection setting If Write Protection is on the SETMEM can only be used for temporary storage only The Analyser will loose the stored data each time the
10. Re naming 25 4 Operation Navigating the MSD 6 8 3 1 Text Copy Paste Function 26 5 INFO Menu 8 9 Preset Menu 28 9 1 Preset Parameters 29 6 Write Protect 9 9 2 Recall a Preset 30 9 3 Save a Preset 31 7 Software Hardware Reset 10 9 4 Edit a Preset Name 32 8 The Audio Matrix 11 10 Signal Generator Menu 33 8 1 Navigating the Matrix 14 10 1 Sine Wave Test Tone Generator 34 8 2 Matrix Options 16 10 2 Pulse Modulation Tone Generator 34 Contents 10 3 EBU Test Signal 10 4 Pink 4 White Noise Test Signals 11 Setup o aaa tanins ler ata ete 11 1 Synchronisation External Internal 11 2 LCD Back Light Menu 11 3 Set Meter Reference 12 Spectrum Analyser 1 3 Octave 12 1 Ballistic Setup for the 1 3 Octave Analyser sig ven a bere es 12 2 Measurement Snap Shots of the 1 3 Octave Analyser 12 3 Operation Modes for the 1 3 Octave Analyser 12 4 Using the Freeze and Gain Offset Function 13 FFT Spectrum Analyser 13 1 Routing Audio to the Analyser SECTION a Php eae NAGANA 13 2 Relative Offset Display 13 3 MSD600 200 Series User s Manual Hold Maximum Level 13 4 13 5 13 6 1
11. Up Down keys 1 This func tion is mainly used for two different applications One is to normalise a measurement in such a way that an actual measured average level for a specific band or bands is set to match a prede fined level on the Meter Scale An example is to set the GAIN until the average level of a given band is around the 0 dB mark on the scale The Actual v measured average value can now be determined by subtracting the entered Gain value from OdB Another useful application for the Gain function is to be able to measure very low level signals Typically the noise level of a system By applying the total of 20 dB Gain on the Input Signal it is possible to analyse signal levels down to 74 dBu e The scale used by the 1 3 Band Octave Analyser follows the one selected for the PPM Meter Please see section 14 2 PPM Scales in this manual on how to change scale e Please note that if using the VU and LEQ m scales which both have a very long integration time the 1 3 Octave Analyser will not work properly 49 50 MSD600 200 Series User s Manual 13 FFT Spectrum Analyser FFT 70 rra TO T all 63 1 16 25 40 63 1k 16 25 40 63 10k 16 enuo 2 5 dB 1125 Hz EXIT a REL SET REL 4 CURSOR a HOLD o ZOOM MORE MSD600 200 Series User s Manual
12. audio product Of course if you do not have or you do not believe in Golden Ears you may want help from other sources Visual information received through the eyes accounts for as much as 60 of all human senses It is therefore an obvious advantage to be able to See What you Hear It is also a great way to con firm the opinions formed by your hearing By being able to visualize the audio signal with the assis MSD600 200 Series User s Manual 3 tance of various metering options things that were previously extremely difficult or even impossible to hear become obvious to the eye Until just a few years ago level metering phase indication and stereo image monitoring had been left to traditional instruments such as VU Meters bar graphs LEDs and oscilloscopes With the new Master Stereo Displays MSD from DK Audio all of these functions and many others are now combined into one compact audio meter ing and monitoring workstation The family of MSD s ranges over a broad pallet of versions each designed to fulfil a specific need found in the pro fessional broadcast audio industry All MSD versions share the same basic func tions e The Correlation Meter displaying the average phase relationship between two audio signals The PPM Level Meter indicating the level of the signal on up to seven selectable international scales with peak and overload indication The Audio Vector Oscilloscope produces a visual pict
13. bar To toggle this function on off press METER then the PEAK key This function works closely with the Peak HOLD func tion described below The peak indicators will remain at their highest peak value for two seconds then either fall back or go to a new highest level The Peak HOLD function will allow you to check the maximum signal level during or especially after the recording session Thus you can secure that the level does not exceed any pre determined li mits To select Peak HOLD press first the METER key then PEAK and HOLD Then toggle the HOLD function on off by pressing the HOLD key In the HOLD mode the flying segments on the PPM bars will indicate the highest bargraph value since the last hold reset MSD600 200 Series User s Manual 79 14 2 2 Dual Peak Indicators DUAL It is possible to show the PPM meter with two dif To select the dual ballistics function press first ferent ballistics for the same signal While the METER then DUAL selected scale with its standard PPM peak indica tors will retain its original ballistics another set of The true digital peak indicators may be selected PPM peak indicators will show the true digital peak without the normal peak indicators and this in fact regardless of the selected scale may be advisable for most applications 80 MSD600 200 Series User s Manual 14 2 3 Input Gain 20dB and Clear function CLEAR When using the Peak Hold function it
14. colours appears Select one of the colours by the corresponding soft key e Exit the Matrix Menu before all changes take place MSD600 200 Series User s Manual HOUTPUT INP IBARGRAPH D X WIDE WIDE O NORMAL D SPACE SET COLOR SET TRACK SET UNDER 49 SUM1 CH 1 50 SIM2 CH 2 51 SPEC SUM 52 SMPT OFF 53 PHAS CH 1 54 PHAS CH 2 SS CENT OFF 56 C 1 OFF 57 C 2 OFF 58 C 3 OFF 59 C 4 OFF 60 C15 OFF 61 C 6 OFF 62 C OFF 65 CH 1 TONH 66 CH TONE 67 CH OFF 68 CH OFF 69 CH OFF 70 CH OFF 71 CH OFF 72 CH OFF ll Porn DKAUDIO 22 8 2 4 AES Input Option AES 06 INPUT OPTIONS O PHASE LOCK CONSUMER AUDIO COPYRIGHT ASSERTED EMPHASIS NOT INDIC CATEGORY GENERAL SOURCE NO NOT INDIC CHANNEL NO NOT INDIC WORD LENGTH 18 BIT MSD600 200 Series User s Manual MONO The AES Input Option Menu is not only used to control the relevant AES Input function Sample Rate Converter Bypass SRC Bypass and External Sync source but also an AES Receive and Status analyser The AES Option menu is a sticky menu This means that the displayed Receive and Input status es are not dynamically updated The MSD reads the current status when entering this option menu and will update the displayed information only after re entering the menu or pressing the CLEAR key Since the AES options are highly hardware depen dant not all MSD models covered in
15. found on the actual MSD model To reflect this flexibility of the OS this manual will describe all functions found in the OS with no regard to how many of the functions are actually available in your MSD model Some functions in the Matrix Menu will vary from model to model because of the difference in the number and type of In Out interfaces of the unit 2 MSD600 200 Series User s Manual e f other functions besides the Matrix menu varies from model to model this will be described in the model specific Technical Manual At date of print 2002 this manual covers the following MSD models MSD600M MSD600C III MSD600C 5 1 MSD200C All trough this manual any of the supported models will be referred to simply as the MSD 1 2 Audio Metering In the audio industry the most important tool used is the human ear Producers sound engineers and technicians rely on their hearing to create the desired audio whether it be the accurate reproduc tion of an acoustic instrument or an entirely new electronically generated musical sound Some people from many different fields within the audio industry are lucky enough to have what are known as Golden Ears It is a gift that allows them to be told all they need to know about the sound they are hearing However while the human ear is a highly sophisticated instrument it is also very subjective and as such may well be misleading when it comes to engineering what is expected of a final
16. function is exited This is very useful when making repeat measurements like the testing of room acoustics loudspeakers etc With Write Protect Off the SETMEM function will save the re ference curve in the MSD s FLASH memory saving the reference curve even after re powering the unit MSD600 200 Series User s Manual 57 The Predefined reference curve PRE is a pre emphasis curve lifting the data readout with 3 dB Octave resulting in a visual appearance of a 1 3 Octave analyser This lift provides a closer relationship between the aural and the visual judgement of the musical audio spectrum Both reference curves can be enabled at the same time 58 MSD600 200 Series User s Manual 13 6 FFT Windowing Functions WINDOW O RECT oO HANN OD HAMM oO NUTT Since the spectrum analyser is based on the Fast Fourier Transform principle the sampled audio data needs windowing An in depth mathematical explanation is not possible within the scope of this manual we would therefore recommend that a detailed explanation of windowing be retrieved from other technical literature However a basic explanation of the windowing concept is as fol lows After the Audio is sampled and entered in a digital buffer with 1024 stages the data is processed by the FFT algorithm and finally the results are dis played While the FFT is processing the 1024 sam ples a new set of data is recorded No data is lost Since the 1024 samples u
17. in dB the number of Over samples and Mutes found Navigating in the Session Log Menu follows the same rules as for the Audio Matrix and for that matter everywhere in the MSD software Two Line Up Down keys f two Page Up Down keys PgUp PgDn and one SELECT key to select the highlighted column In addition a SCROLL function have been added enabling scrolling through long data text lines The lines in the Session Log Menu that contain parameters that can be altered by the SELECT key will be highlighted Then when pressing the SELECT key the selected line will turn into a purple colour and a set of Up Down keys 1 1 will appear in the soft key menu The Session Log Display has been divided up into several smaller sections These sections are as fol lows 1 Session Log Main Controls 2 Timing information 3 Settings 4 Result 5 Time Stamp information 74 MSD600 200 Series User s Manual 14 1 3 1 Using the Session Log STOP PRINT RESET Starting a Session log is simply done by selecting the SES LOG key from the SCALE METER UTILITY Menu The Session log will start logging right away Stopping the Logging or Resetting Re Starting is simply done by selecting the correspon ding line with the green cursor and pressing the SELECT key For each Session Log activity the Recorded data is saved in the MSD s internal data memory By selecting the PRINT function this record will be printed
18. it is possible to enter the response time from 125mSec to 1000mSec in 125mSec steps To measure the maximum output level from any of the 30 bands over time the TRACK function combines this feature together with the standard display mode When engaged the maximum output from each band will now be displayed as a purple coloured bar behind the normal live bar green colour MSD600 200 Series User s Manual 45 Combined with or separate from the TRACK func CLEAR functions can only be used when the PEAK tion the Analyser also have a normal flying peak function has been selected indicator with a very long release time holds the peak value approximate 2 seconds The PEAK e All functions in the MSD that can be toggled on function can also be used in conjunction with the or off are implemented using a green or read HOLD function enabling a classic Peak Hold coloured square inside the actual Key Frame function The displayed PEAK values can be When selected ON this square will be lit Cleared by the CLEAR key Both the HOLD and 46 MSD600 200 Series User s Manual 12 2 Measurement Snap Shots of the 1 3 Octave Analyser MEMORY ao Adding a Memory Function to the 1 3 Octave analyser greatly expands the usability of the analyser giving the user the power of saving actual measurements and using these again as reference for new measurements The MEMORY Menu has three main functions SAVE RESET and PRESET U
19. of the desired source input and press the SELECT key MSD600 200 Series User s Manual Output Column Line Number Output Column Line Number Phase Correlation Meter Input PPM Meter 1 The PPM Ch 1 is re routed Surround Sound C 3 Input PPM Meter Ch 4 4 CENT selected Input resulting in a 5 1 format Jelly FishTM Program Peak Meter Ch 5 Input Rs Channel 47 48 Si Output Column Name Input Column Line Number PA OUTPUT INP AES4 OFF AES4 OFF SPEC SUM 53 PHAS CH 54 55 56 57 58 59 60 61 62 PHAS CH CENT CH C i CH C 2 CH C 3 CH C14 CH C15 C 6 C ONDARRUN Input Column Name Physical Input Channel Rs Right Surround Physical Format depending on MSD model Physical Input Channel AES 4 Only found on the MSD600M Output 1 from Built In Tone Generator Output from PPM Ch 5 Even though a PPM is a Meter Function the Inputs to PPM s can be re routed 15 16 MSD600 200 Series User s Manual 8 2 Matrix Options OPTION Most functions in the MSD have one or more options relating to it These options are mainly con cerning the meter ballistics and the visual appear ance The Phase Correlation Meter Audio Vector Oscilloscope and Surround Sound Monitor share 8 2 1 Mono Stereo Option MONO The Option Menu for all the physical Output
20. out to a printer if one is connected to the serial RS232 connection on the MSD unit e To Exit the Session Log Menu press the EXIT key followed by the YES key to confirm 14 1 3 2 Session Log Timing Information All Audio input signals that can course a Trigger event will be recorded The Session Log function can be set up to record the highest measured signal level any Digital full scale event Overs and any Mute events that have happened between each record When a record time is over Logging Interval have been reached the result is displayed at the bottom of the Session Log Display To make it possible to trace when each record is made a Time Stamp is attached to each record The Time Code used by the Time Stamp function can be selected either using an internally generated Time Code or the output from the SMPTE time code reader The selected source to the SMPTE time code reader is listed under the Time Code Source When the source is selected to OFF the MSD will generate an internal Time Code that will be used by the Session Log Function To select between an internal or an external time code enter the Audio Matrix and select an Input source to the SMPT output Column 52 If the MSD600 200 Series User s Manual 75 selected Input is not a Time Code encoded signal the SMPTE code reader will turn off To start the internal Time code generator select the Input co lumn OFF line 51 52 The Logging Interval t
21. signal in the Lissajous format MONO SIGNAL n 2 3 46 o 6 12 18 24 20 36 8 LEFT SIGNAL RIGHT SIGNAL REVERSED PHASE MONO SIGNAL MSD600 200 Series User s Manual 85 86 MSD600 200 Series User s Manual 16 2 Jelly Fish S Surround Sound Monitoring The MSD has a full Surround Sound monitoring function using the unique Jelly Fish image CENTER i Ce arn 47 SETUP MSD600 200 Series User s Manual 87 The Jelly Fish figure represents the surround channels in a vector format The Jelly Fish can be used to monitor all standard surround sound formats up to 7 1 including Pro Logic 5 1 6 0 ZA In addition a pseudo surround sound decoding mode of a stereo signal is also provided The Jelly Fish monitor was designed to provide a fast and intuitive way of visualising the surround sound field and its complex phase relationships Depending on the used format automatically detected based on the number of sources applied to the surround sound monitor the MSD will select an appropriate back ground scale for the Jelly Fish The used labels on the scales do not represent the placement of the speakers in the used surround sound format but are merely meant to indicate a specific direction in the surround sound field 88 MSD600 200 Series User s Manual The four Surround Sound formats supported can also be illustrated as below
22. this manual will support these functions 8 2 4 1 SRC Bypass and External Sync To bypass the Sample Rate Converter RSC on one of the AES Inputs or to force the MSD to syn chronise to an external AES signal first select the desired menu line using the arrow Up Down keys t The selected line will be highlighted in a green colour Open the underlying selection menu by pressing the SELECT key MSD600 200 Series User s Manual 23 The SRC on all the AES Inputs can be individually bypassed When bypassing a SRC it is important to remember that the incoming AES signal must be synchronised to the MSD In most situations it is not recommended to bypass the SRC due to the risk of generating a synchronisation error Such errors will generate full scale clicks in the audio stream Without audibly monitoring the measured AES signal these clicks could be mistaken for a real audio signal The MSD will be delivered from the factory with the SRC on The MSD family has been designed to run on a fixed internal sample rate at 48 kHz However in certain situations it is required to synchronise the MSD against an external source On the MSD600M this source can be an AES signal connected to the dedicated External Sync Input located on the Utility Module On all other models supported by this manual it is possible to sync to any of the incoming AES signals Selecting an external synchronisation source will force the MSD to follow t
23. 4 14 1 14 1 1 14 1 1 1 14 1 2 14 1 2 1 14 1 2 2 14 1 2 3 14 1 3 14 1 3 1 14 1 3 2 14 1 3 3 14 1 3 4 14 2 14 2 1 14 2 2 14 2 3 FFT Zoom Function 55 Relative Memory FFT Measurements 56 FFT Windowing Functions 58 Peak Program Meter 60 PPM Utility Functions 61 DMU 30 Scale 62 Setting Reference and Overs for the DMU 30 Scale 64 The Loudness Scale 66 Setting the LEQ M 68 Calibrating the LEQ m 70 Using the LEQ m 71 Session Log 72 Using the Session Log 74 Session Log Timing Information 74 Setting of the Session Log Trigger AU EAN A as Ge 75 Session Log Record Displaying 76 PPM Scales 77 PPM Peak and Peak Hold 78 Dual Peak Indicators 79 Input Gain 20 dB and Clear function 80 MSD600 200 Series User s Manual Contents 15 The Phase Correlation Meter 81 16 Audio Vector or Surround Sound Monitoring 82 16 1 The Audio Vector Oscilloscope 84 16 2 Jelly Fish S Surround Sound Monitoring 86 Registration 92 MSD600 200 Series User s Manual Index Section 1 3 OCT Spectrum Analyser 1 3 Octave 12 20 dB Input Gain and Clear function CLEAR 14 2 3 CAL Calibrating the LEQ m 14 1 2 2 CLEAR Input Gai
24. 51 Most spectrum analysers used in sound engineer ing are based on analogue filtering techniques For many years this has been the only practical solu tion for real time analysers at a sensible size and cost However modern Digital Signal Processing DSP used by the MSD Family have made it possi ble to implement the complex FFT Fast Fourier Transform algorithm which radically out performs its analogue counterpart many times over For example the number of frequency bands has been increased from the traditional 27 or 31 to a mas sive 512 and the dynamic range to 80 dB These improvements make it possible to analyse noise distortion IM and frequency response in a far more detailed and accurate way than ever before To enter the FFT Spectrum Analyser mode select FFT from the MAIN Menu Frequency is indicated at the bottom of the screen from 48 Hz to 20 kHz with signal level indicated on the left hand side in 10 dB intervals from 70 dB to 10 dB 52 MSD600 200 Series User s Manual 13 1 Routing Audio to the Analyser Audio Matrix 51 spec In that way when toggling Section between the 1 3 Octave and the FFT analyser it is not needed to set up the Matrix more than once Both types of Spectrum Analysers available in the MSD share the same Output Column number in the OUTPUT INP 47 AES4 OFF 48 AES4 OFF 51 SPEC SUM Output Column Number Example shows that the output 51 assigns the Source from the Sum
25. B 6 0 dB Because of the very high resolution LCD display used on the MSD s the actual pixel resolution is VERY high The top full scale of the PPM Display when using the FINE function is depending on the Reference level indicated by a yellow line in the PPM Display when FINE mode is not active See next section of this manual for details on how to set the reference level MSD600 200 Series User s Manual 63 The FINE mode differentiate from the standard DMU 2 scale by the capability of setting the Reference level The DMU 2 scale reference level is fixed on digital full scale The OVERS function is a scaled down version of the same function found under the Session log Menu counting the number of times the Input sam ples are hitting the absolute digital limit Digital Full scale To Clear and restart this counter press the CLEAR key 64 MSD600 200 Series User s Manual 14 1 1 1 Setting Reference and Overs for the DMU 30 Scale REF OVERS Setting the DMU 30 Reference level and OVERS Reference count number is considered a critical operation and therefore can only be done when the WRITE PROTECT function is turned off To enter the Reference Menu first turn off the Write Protect found in the Info Menu followed by select ing the DMU 30 Key In this way the DMU 30 key have two different underlying menus depending on the status of the Write Protect The DMU 30 Reference level indicated by a yellow line i
26. Difference Input to the 1 3 Octave Amplifier is used as source for amp FFT Analyser S54 PHAS CH the Analyser section SS CENT CH 56 C 1 CH 57 C 2 CH 58 C 3 CH 59 C 4 CH 60 C S 61 C 6 62 C17 MSD600 200 Series User s Manual 53 Like all other functions in the MSD routing Audio signals from and to these is done by the Audio Matrix Using the navigation tools in the Matrix Menu the INPUT to the Analyser Section 1 3 Octave 8 FFT Analyser is selected from the Input Column Menu When entering the SELECT key at the selected Input Column the Matrix is creating what is known as a cross point In the Technical Manual a full signal flow chart for the various MSD models is shown A cross point in the Matrix can be created everywhere two signal lines are intersecting Attention must be paid to the PPM Output All 32 possible PPM Inputs are fed back into the Matrix In this way it is possible to use the PPM destina tions as sources from the Input Column re rou ting an Input signal via a specific PPM to another function in the MSD By using this feature the Matrix setup can be simplified by only assigning the physical Input to a single destination the PPM even though the same signal are used in several places Please see the configuration of the applied factory Presets which all are using this type of PPM signal feedback 54 MSD600 200 Series User s Manual 13 2 Relative Offset Display REL
27. Program Meter Rs 4 INFO MATRIX PRESETS 516 GE SETUP 1 3 OCT FFT METER The Soft Key Menu 6 MSD600 200 Series User s Manual 4 Operation Navigating the MSD The Soft key Text line menu is the navigation tool have a set of Soft keys specifically allocated for of the MSD The Operating System is designed in that menu such a way that it enables each individual menu to kaan o o MSD600 200 Series User s Manual To return to the MAIN Menu or to return to a previ ous menu it is always possible to use the EXIT key leftmost position Beside menu navigation the Soft keys can also be used as value input tools Selection soft key Gain adjustment soft key 8 MSD600 200 Series User s Manual 5 INFO Menu MENU Y INFORMATION DK AUDIO A S MARIELUNDUEJ 37D DK 2730 HERLEV TEL 445 4485 0255 FAX 45 4485 0250 ww dk aud io com SERIAL NUMBER SOFTWARE VER 3 2 HARDWARE VER 1 00 FIRMWARE VER 4 HARDWARE ID 0100 INPUT MODULES 1 24 4 AES 2 22 2 AES 3 11 1 AES 2 ANA 4 0 NOT INSERTED OUTPUT MODULES 1 11 1 AES 2 ANA 2 11 1 AES 2 ANA 3 C0 NOT INSERTED 4 GPIO 10 MODULE The MSD is designed using so called FLASH Memory technology Besides holding the OS soft ware version this FLASH memory also stores other vital information used by the MSD In addition to being used as a product verificat
28. R key from the Main Menu and Meter Display are located under the METER Menu continue to the Utility or Scale Menu for selecting a making this Menu one of the most important in the required PPM scale function The PEAK HOLD system at all DUAL and 20 dB functions are available directly from the PPM METER Menu MSD600 200 Series User s Manual 61 14 1 PPM Utility Functions UTILITY On top of all the advanced metering and analysing are three such extra special functions The DMU 30 functions and the flexible selection of PPM scales Digital Audio Peak Meter The LEQ M and finally a which by it self makes the MSD a unique product session log function some extra have been added At present time there 62 MSD600 200 Series User s Manual 14 1 1 DMU 30 Scale DMU 30 SET REF EXIT O PEAK O HOLD RESET O FINE O DUAL CLEAR OVERS 0 The MSD600M has included the DMU 30 scale To use the DMU 30 scale first select METER then UTILITY This opens the UTILITY SELECTION menu from which you can select the DMU 30 key The DMU 30 scale is a Digital True Peak scale with a range of O dB 60 dB Just like any other scale selected from the SCALE Menu the DMU 30 scale offers PEAK HOLD DUAL and RESET functions The DMU 30 s RESET Function is equal to the CLEAR function used by any of the 7 internal scales The DMU 30 scale can be reduced by a factor of ten for accuracy by pressing the FINE key Now the scale has a range of 0 0 d
29. accuracy level Audio Data Word length An in depth technical description of AES Channel Status bits is beyond the scope of this manual MSD600 200 Series User s Manual 25 8 3 Matrix Label Re naming EDIT INFO MATRIX PRESET SIG GEN SETUP 1 3 OCT The EDIT function allows you to change the text names for the Matrix Input and Output channels using a copy and paste function much like a word processor Since changing the names in the Matrix is considered a critical operation the WRITE PRO TECT function found in the INFO Menu first need to be turned off With WRITE PROTECT still enabled it will not be able to enter Matrix EDIT Menu It will be greyed out To EDIT the text name of a Matrix channel label first select the desired Matrix Column channel using the Matrix navigating tools Then press the EDIT key which will highlight the text in the selected line to a pink colour indicating that the EDIT function is now available Each channel name can consist of a maximum of four alphanumeric characters The first character of the name will be highlighted by a flashing underscore Select the new character in this position by stepping through the alphabet using the arrow Up Down keys 1 Use the arrow Left Right keys lt gt to select additional 26 MSD600 200 Series User s Manual character positions When you have completed the text edit press ENTER to confirm The text line will change back to the green curso
30. cted A complete comparison list for all the surround sound formats can be found in the appendix of the Technical Reference Manual sil mm okAuDIS When monitoring a surround sound signal it is always recommended to use one of the factory presets preset 4 9 as a template for MSD settings In that way a problem free guide on how to wire up the MSD can be ensured when following the instructions found in section 9 of this Manual CENTER LS Rs MSD600 200 Series User s Manual To monitor the complex phase relationships in a common surround sound signal the Jelly Fish is identifying any phase problems accurately by a colour change to red in the relevant vector in the Jelly Fish image The width of the red colour spot indicates the degree of phase error To monitor the exact phase relation between any two signals in the Jelly Fish these signals can be routed to the separate Phase Correlation Meter e When using a preset on a surround sound format using a separate Low Frequency Energy LFE channel format 5 1 and 7 1 the MSD will automatically include this LFE channel on the PPM Meter Since the LFE channel do not contain any frequency information that can be directionally determined it is NOT included in the Jelly Fish monitor 91 92 MSD600 200 Series User s Manual Registration Please fill in the registration card that was enclosed Which features would you like to see in new ver wi
31. dy to go There are a total of eleven possible presets all user definable Preset 0 is the Base Setup which is the Preset used booting from power up or after a RESET function To avoid accidental change or erasure of the Base Setup Preset it can only be overwritten by a special procedure described below Depending on the MSD model a certain number of the available presets are used as Factory Presets The remaining preset locations will be used as USER PRESETS The first preset in the preset list will always be used as the Base Setup 9 1 Preset Parameters The following parameters may be stored in the eleven presets cross points Matrix settings source and destination names PPM and scope trace colours scales PPM options Ref Levels and signal generator settings e Fora total overview of all presets found in the specific MSD models please see the Technical Reference Manual for details 30 MSD600 200 Series User s Manual 9 2 Recall a Preset RECALL rama sean moa ee ae l To select any of the eleven presets go to the PRE a green cursor Press the RECALL key and the SET menu from the Main Menu Select the desired preset has been selected preset number by using the arrow Up Down keys t J The selected Preset will be highlighted by When recalling a preset the MSD will return to the Main Menu MSD600 200 Series User s Manual 31 9 3 Save a Preset SAVE To save all the current settings in a Pre
32. e to be fed into the Audio Matrix just like any other external audio signal This means that the Signal Generator via the Matrix can be set to output a test signal on any physical output avail able on a given MSD model The Signal Generator shows up in the Input Matrix Column number 53 54 and can be treated just like any other source In this way you can also feed the output from the Signal Generator directly to the PPM Meter or to any of the other functions found in the MSD For MSD Models with no physical out puts it is still possible to use the Signal Generator as an internal test generator e The active Test Tone is indicated by the highlighted green square 34 MSD600 200 Series User s Manual 10 1 Sine Wave Test Tone Generator SINE To adjust the frequency and the amplitude for any of the test tones available enter the SINE Menu Setting the frequency is done by the arrow Left Right keys lt gt The amplitude by the arrow Up Down keys f The frequency can be set in the range of 31 Hz to 19 952 Hz in predefined steps The amplitude adjustments measured in dBu are made in steps of 0 1dB but adjust ment speed can be increased by a factor ten 1 0 dB by pressing the x10 key If active the x10 indicator is lit 10 2 Pulse Modulation Tone Generator PULSE The PULSE function changes the sine wave signal from a tone generator into a pulse chopped sine wave The ON and OFF duration times i
33. eries User s Manual 8 2 2 2 Meter Compression Function C OFF To obtain the best visual indication at all signal levels the Audio Vector Oscilloscope and Surround Sound Monitor is using dynamic scaling This is done adjusting the Meter Input Gain stage right before the metering function The auto adjustments are done so that the average input level results in a metering display close to full scale This auto adjustment feature is also referred to as the Meter Compressor function or just C OFF It is possible to turn this Meter Compressor func tion on and off When the small square green indi cator is lit the compressor is off The Meter Gain can be set in the range between 0dB and 30dB When C OFF is selected it is possible to manually set the Input Gain stage otherwise used by the compressor e When the compressor function is in use it is important to note that the Audio Vector Oscilloscope and Surround Sound Monitor can not be used to monitor the actual signal level MSD600 200 Series User s Manual 19 8 2 2 3 Colour Select SCOPCOL To select one of seven possible colours used by A small square green indicator shows the selected the Audio Vector Oscilloscope and Surround Sound colour Jelly Fish press the SCOPCOL key and then choose the desired colour e The colour on the Phase Correlation Meter is always set to be green 20 MSD600 200 Series User s Manual 8 2 3 Option Menu for the PPM presentation
34. filter bank higher value than any of the separate 1 3 Octave containing a number of filters with relative band bands widths for example 1 3 Octave The signal being filtered passes through one filter at a time Once To make it easier to separate the individual bands the signal for a filter has been detected and its the 1 kHz band has been coloured yellow value determined then the next filter is reviewed e Please see the FFT Spectrum Analyser section The leftmost bar on the 1 3 Octave Analyser blue 13 for details regarding how to select the Input colour is an input level indicator for the Analyser Source for the Analyser in the Audio Matrix 44 MSD600 200 Series User s Manual 12 1 Ballistic Setup for the 1 3 Octave Analyser SETUP RESPONS To obtain improved flexibility of the 30 band 1 3 Octave Analyser it is possible to adjust several of the Meter Ballistics Besides the Meter Response time it is also possible to set the Meter Peak Hold functions e The leftmost bar on the 1 3 Octave Analyser blue colour is an input level indicator for the Analyser Since the Input signal contains the energy from the entire 30 band combined this bar will normally show a higher value than any of the separate 1 3 Octave bands Tran are Fo To alter the ballistics of the Analyser enter the SETUP Menu under the 1 3 Octave Menu The analysers response time is set by the RESPONS Key Pressing this key opens a new menu from where
35. he sample rate of the sync signal It is therefore important to ensure that the external sync sources sample rate do not exceed 48 kHz e On the MSD600M External Sync is selected from the SETUP Menu available directly under the Main Menu Please refer to the Technical Reference Manual for more details regarding the use of external synchro nisation and the SRC 8 2 4 2 AES Receive Error To verify the quality of the received AES Audio data stream the AES Input Option menu have been fit ted with a set of indicators showing the basic receive conditions All the shown error conditions are directly read in hardware For an AES signal reception none of the five error condition indicators must be lit 24 MSD600 200 Series User s Manual In this menu the following conditions are moni tored Phase Lock error Valid Data Confidence Error Bi phase coding error Parity Error An in depth technical explanation of the nature of these errors is beyond the scope of this manual e This function is not supported by all types of input modules for the MSD600M 8 2 4 3 AES Input Status At the bottom part of the AES Input Menu you find the AES Input Status display Here is the most common used AES embedded channel status bit displayed in decoded format The displayed Status bit information is as follows Consumer Professional Audio Copyright Emphasis Category code Source Number Channel Number Source Sample rate Source Clock
36. ime can be set in the range of 1 second to 240 seconds 4 minutes Underneath the Logging Interval is listed relevant logging information including Starting and Ending time Elapsed Time and the Max available logging time The maximum logging time is limited by the MSD s internal available data memory the selected Logging rate and numbers of channels selected The longer time between each logging the longer maximum Logging time For a two channel system with a logging time set to one minute 60 Seconds the Maximum logging time will be 12 hours equal to 720 records e The Title and Date Information Line is meant to be filled out by the user if the Session Log is printed out 14 1 3 3 Setting of the Session Log Trigger Events As mentioned the Session Log is checking if any of the two available events have been triggered between each Logging Interval The Session Log will look at all max 8 the chan nels selected in the PPM Display e The selected Scale used by the PPM is listed under the Scale Type The two Trigger Events are Digital Full Scale also known as Overs and periodic signal Mutes The number of Overs required to trigger an event can be set from 1 to 15 and filter out short peaks by only triggering on longer events where the signal is clipping If all Overs should be triggered just set the trigger event to 1 For the mute trigger event it is possible to set a threshold which the signal must be below before it ca
37. ion tool the information found in the INFO Menu is critical when it comes to updating the MSD with new features as they are released by DK Audio Software updates are the most common way to enable new functions in the MSD But in rare cases also the Firmware that configures the Hardware of the MSD can be updated enabling new hardware functions not yet implemented For information regarding the latest Software and Firmware versions please visit our website at www dk audio com When contacting DK Audio regarding costumer service questions please have the information found in this menu available This will greatly help us with a fast and accurate response MSD600 200 Series User s Manual 9 6 Write Protect WR PROTECT e To avoid accidental changes to the presets the MSD is fitted with a WRITE PROTECT function Pressing the WR PROTECT key toggles the indicator light Red light indicates that the Write Protection is ON No indication means that the protection is off ready for preset save The Write Protect function is also used to prevent other critical functions to be changed by a mis take One of those functions is the Meter Utility menu Set Reference SET REF that sets the over all internal reference level If WR PROTECT is On Red light in the indication square the menu will be grey and it will not be possible to enter the menu This convention is followed for all functions that requires Write Protect to be d
38. is very useful window press the METER key Now press the to be able to clear the display so a new measure 20 dB key This function is used to obtain the ment can be started To do this press the CLEAR best possible dynamic range and accuracy of key measurement from weak signals A red 20 indica tor in the top left corner of the PPM meter display The input sensitivity of the PPM meter can be indicates that this function is ON increased by 20 dB From the MAIN DISPLAY MSD600 200 Series User s Manual 81 15 The Phase Correlation Meter The Phase Correlation meter is the extreme left hand display in the MAIN DISPLAY The Phase Correlation meter is of the so called Centre Zero type and displays the phase relationship between the two input signals A stereo signal will ideally show 0 which is random distributed phase and therefore the maximum ambient effect Mono will indicate 1 1 and a signal with reversed phase components will indicate in the range 0 to 1 When the indicator moves into the negative or non mono compatible area it will change to red for easy identification Any signal pair can be moni tored on the phase meter e You should never allow negative indication if your signal is going to be reproduced in mono Input signals below a predefined threshold will force the indication towards zero This is done because the Phase content of very low level signals is insignificant It is important t
39. isabled before any change can be made 10 MSD600 200 Series User s Manual 7 Software Hardware Reset RESET The RESET function works like a Power up of the unit generating a Hardware Reset followed by a total initialisation of all hardware and software related functions Just like after a power up the RESET function will force the MSD to boot all settings from PRE SET O Base Setup Since the power supply for the MSD often will be placed out of reach the RESET function is a very handy way to force the MSD through a Power up sequence RESET In the event of concerns about the correct func tionality of the MSD a RESET function may be pre ferred over a Preset recall Since it is recommend ed to have saved the favoured settings in the PRE SET 0 Base Setup using the RESET function is a fast and safe way to get back in business e Do not mistake this RESET function with the same named menu function under the METER UTILITY DMU 30 scale MSD600 200 Series User s Manual 8 The Audio Matrix MATRIX INFO HOUTPUT INP 49 SUM1 CH 1 50 SUMZ CH 2 51 SPEC SUM 52 SMPT OFF 53 PHAS CH 1 54 PHAS CH 2 55 CENT OFF 56 C 1 OFF 57 C Z OFF 58 C 3 OFF 59 C 4 OFF 60 C 5 OFF 61 C 6 OFF 62 C 7 OFF 65 CH 1 TONE 66 CH 2 TONE 67 CH 3 OFF 68 CH 4 OFF 69 CH 5 OFF 70 CH6 OFF 71 CH OFF alll 72 CH 8 OFF 1 am DKAUDIO DOC a EXIT 12 MSD600 200 Series Use
40. n 20dB and Clear function 14 2 3 C OFF Meter Compression Function 8 2 2 2 COPY Text Copy Paste Function PASTE 8 3 1 CURSOR Relative Offset Display REL SET REL 13 2 DMU 30 DMU 30 Scale 14 1 1 DUAL Dual Peak Indicators 14 2 2 EBU EBU Test Signal 10 3 EDIT Edit a Preset Name 9 4 EDIT Matrix Label Re naming 8 3 FAST Integration Time SLOW 8 2 2 1 FFT FFT Spectrum Analyser 13 FREEZ Using the Freeze and Gain Offset Function GAIN 12 4 GAIN Using the Freeze and Gain Offset Function FREEZ 12 4 HOLD Hold Maximum Level 13 3 Page 42 80 70 80 18 26 54 62 79 34 32 25 17 50 49 49 55 Section HOLD PPM Peak and Peak Hold PEAK 14 2 1 LCD LCD Back Light Menu 11 2 LEQ M Setting the LEQ m 14 1 2 1 LEQ M The Loudness Scale 14 1 2 MATRIX The Audio Matrix 8 MEMORY Measurement Snap Shots of the 1 3 Octave Analyser 12 2 MENU Info Menu 5 METER Peak Program Meter 14 MONO Mono Stereo Option 8 2 1 OP MODE Operation Modes for the 1 3 Octave Analyser 12 3 OP MODE Relative Memory FFT Measurements 13 5 OPTION Matrix Options 8 2 OVERS Setting Reference and Overs for the DMU 30 Scale REF 14 1 1 1 PASTE Text Copy Paste Function COPY 8 3 1 PEAK PPM Peak and Peak Hold HOLD 14 2 1 Page 78 39 68 66 11 46 60 16 48 56 16 64 26 78 Index PgUp PgDn Navigating the Matrix 1 J SELECT P PKN
41. n mil lisecond increments is set with the arrow Left Right keys lt gt under the key labels ON xxxxMS and OFF xxxxMS For instance if you want the signal to be on for 10mSec and then off for 20mSec set the ON key to 10 and the OFF key to 20 Single millisecond increment adjustments are made by pressing these keys UP or DOWN indivi dually For greater increments keep the key pres sed down 10 3 EBU Test Signal EBU For radio TV and video production the EBU test signal identifies the right channel of a stereo signal by switching the right signal off for 3 seconds then on for 1 second To enable this function in the MSD press EBU Please note that the tone sig nals must be selected in the proper LEFT RIGHT order in the MATRIX Menu Line 53 LEFT and Line 54 RIGHT MSD600 200 Series User s Manual 10 4 Pink amp White Noise Test Signals R WHT R PNK P WHT P PNK The Test Tone Signal Generator is also able to generate both White and Pink Noise signals in two different implementations The Pseudo White Noise P WHT and Pseudo Pink Noise P PNK are derived from impulse signals with repeated frequency spectrum content while the Random White Noise R WHT and Random Pink Noise R PNK are true random noise signals 35 36 MSD600 200 Series User s Manual 11 SETUP SYNC STATUS O EXT SYNC SELECTED O EXT SYNC ERROR External Synchronisation Status Display
42. n the DMU 30 PPM Display is set by the SET REF REF arrow Up Down keys 1 The Reference level can be set in 1 dB intervals in the range from 20 dB to O dB full scale This Reference level is used to decide the top full scale of the FINE scale In this way the FINE key is used to zoom into a selected area of the PPM display The OVERS Reference count number set by the OVERS arrow Up Down keys 1 determines how many continuous samples that have to hit di gital full scale before an OVER is registered In this way very short spikes hitting the digital full MSD600 200 Series User s Manual 65 scale can be filtered out only leaving longer more e When leaving the MSD 30 Menu the MSD will damaging clipping to be registered The OVERS change scale back to the one selected under can be set in the range from 1 to 15 samples the METER SCALE Menu To keep a DMU 30 PPM scale select the DMU 1 or DMU 2 scale e Remember to turn the Write Protect ON after from the SCALE Menu finishing any settings 66 MSD600 200 Series User s Manual 14 1 2 The Loudness Scale LEQ M L R C Ls Rs Sub 95 94 CENTER 93 92 91 90 89 Special LEQ m PPM bars 88 87 86 85 84 83 82 81 80 79 78 The LEQ m numeric display La LEQ m Trip Function CAL Indicator 86 3 alllin A DKAUDIO TY Ea timer unction mor waren MSD600 200 Series User s Manual 67 A new
43. n trigger an event In addition to that the Period 76 MSD600 200 Series User s Manual of time in which the signal is under this threshold can be set In this way short breaks in music or in an interview can be filtered out only allowing longer muted periods of the Input signal to trigger the event The Mute threshold can be set in the range of 80 to 40 dB The muting time can be set from 1 to 20 mSec 14 1 3 4 Session Log Record Displaying The results are displayed at the bottom of the Session Log Display First the total number of Overs and Mute events recorded from all the PPM channels are displayed Below this information follows the actual Session Log Record At the leftmost side a time stamp have been added to the record making it easier to read and compare with the input source material MSD600 200 Series User s Manual 77 14 2 PPM Scales SCALE Please study the following reference reports to Illustrations below show some of the most com obtain the complete set of specifications The mon international standard scales Matching the IEC268 10 Peak Program Level Meters The DIN soft key example abovel 45406 and The Pflichtenhefte 3 6 The IEC 268 17 VU Meter The Nordic N9 The CCIT Report 292 2 and BS6840 Part 10 TYPE DIN NORDIC 78 MSD600 200 Series User s Manual 14 2 1 PPM Peak and Peak Hold PEAK HOLD 4 The PEAK function activates the flying peak indi cators above each PPM
44. nce Level for both Analogue and Digital AES 3 Inputs The AN dB effecting all Analogue Inputs and DI dB effecting all Digital AES 3 Inputs e The MSD is factory calibrated with AN dB and DI dB settings to match the regional standards for the used PPM scales It is important to note that these norms vary from country to country The SET REF Offset value will be added to the incoming signals to the PPM A positive dB value will therefore result in the selected PPM Meter showing a higher indication on the meter It is important to keep in mind that it is the reference level of the meter that are moved NOT the meas ured input signal that are higher e Any modification of the Reference settings must be done only after careful consideration Since the SET REF is considered a crucial setting the WRITE PROTECT must be disabled before it is possible to enter the SET REF Menu MSD600 200 Series User s Manual 41 42 MSD600 200 Series User s Manual 12 Spectrum Analyser 1 3 Octave 1 3 OCT 40 63 100 160 250 400 630 1KO 1K6 2K5_ 4KO 6K3 10K 16i 0 80 125 200 315 500 800 1K3 2KO 3K2 SKO 8KO 13K MSD600 200 Series User s Manual 43 In the analysis of sound it has always been impor Since the Input signal contains the energy from all tant to describe the frequency content of a signal 30 bands combined this bar will normally show a Traditionally this has been done using a
45. o remember that only major phase components are considered To select the source input for the Phase Correlation Meter press the SELECT key in the Output Audio Matrix column line 53 54 PHAS 82 MSD600 200 Series User s Manual 16 Audio Vector or Surround Sound Monitoring The middle display in the Main Menu has dual functions Either used as an Audio Vector Oscilloscope or as the Jelly Fish Surround sound monitor The appropriate display is selected depending on the Matrix setting When an active source setting Inputs have been selected for the Surround sound monitor Column line 55 62 in the Audio Matrix menu the Jelly Fish is selected for the middle display in the Main Menu This will be the case even if a source also is selected for the Audio Vector Oscilloscope The source for the Audio Vector Oscilloscope is selected from the Output Matrix Column line 53 54 PHAS e Note that the Phase Correlation meter and Audio Vector Oscilloscope are sharing the same destination Column PHAS in the Audio Matrix If it is required to alternate between the Audio Vector Oscilloscope and the Surround Sound Jelly Fish display it is recommended to create two user presets In this way it is not required to rese lect the Audio Matrix each time a change is required Just enter the Preset Menu and Recall the required preset Refer to section 8 1 Navigating the Matrix for a detailed description
46. on how to navigate the Matrix MSD600 200 Series User s Manual 83 Both the Audio Vector Oscilloscope and Surround Sound Monitor are using dynamic auto adjustment scaling on the horizontal and vertical scales Auto scaling enables the display window to follow the average input signal level resulting in a metering close to full scale for most of the time Because of this dynamic scaling it is important to notice that the Audio Vector Oscilloscope and Surround Sound Monitor can not be used to moni tor the actual level of the signal but only the relative value This auto adjustment feature referred to as the Meter Compressor function or just C OFF is a user parameter and can be set on off Please refer to section 8 2 2 2 C OFF 84 MSD600 200 Series User s Manual 16 1 The Audio Vector If phase and amplitude are randomly distributed Oscilloscope Stereo Image the signal is an ideal stereo signal Monitor Normally this will only happen with a live recorded The Audio Vector Oscilloscope is the central dis signal Applause from a live recorded audience play in the MAIN DISPLAY window It is also known gives you an excellent example of a true stereo sig under the names Stereo Image Monitor and nal The figure of a true stereo signal should be Goniometer It is based on a continuous graphic represented on the oscilloscope as a perfect circle illustration of the phase and amplitude of the stereo or rather a ball
47. r colour and the menu will return to the MATRIX window Do not for get to return to the INFO Menu to put the WRITE PROTECT back on 8 3 1 Text Copy Paste Function COPY PASTE The Copy and Paste functions work in the same way as they do in your Windows PC program and make it easy to copy multiple names from one line to another To use this function you must first set the cursor on the Matrix Column line you wish to copy from Press the EDIT key and then the COPY key Now confirm your choice via the t ENTER key To paste the copied text first set the cursor to the desired Matrix column line then press EDIT followed by PASTE Confirm with ENTER and the operation will be completed This returns you to the MATRIX menu Do not forget to return to the INFO Menu to put the WRITE PRO TECT back on MSD600 200 Series User s Manual 27 28 MSD600 200 Series User s Manual 9 Preset Menu PRESET PRESET NAME BASE SETUP ALL ANALOG CENTER LRCLsRs LRLsRsCCs LRC1CrLsRs LCRLsRs 9 Lt Rt 10 USER OBNOORWNRO all am DKAUDIO MSD600 200 Series User s Manual 29 The presets are the easiest way to use the MSD in daily operation By establishing a number of pre sets designed for your own applications and pre ferences these can easily be recalled for a specific job Instead of setting all the parameters individual ly for each new job you just select the appropriate preset and you are rea
48. r s Manual The Audio Matrix function has become the control centre of the MSD unit Almost all the parameter settings are selected and internally routed via the matrix Upon entering the MATRIX Menu the Status List will show the current configuration of outputs and Inputs The left hand column list the various func tions with the Input routed at the right hand co lumn The MSD always looks at the signal routing from a DESTINATION output point of view The destination output column is permanently numbered from 1 96 with the source input column permanently numbered from 1 88 However only lines shown in WHITE can be selected based upon the number of available in output for the specific MSD model BLACK lines are therefore not avail able Almost all functions in the MSD are arranged in this large 88 input x 96 output Matrix Any input channel may be routed to any output including separate left right channels of an AES 3 stream Therefore you are not restricted to the routing of signal pairs All meter functions such as phase meter audio vector oscilloscope spectrum analyser and the PPM are considered destination outputs So sig nals that have to be analysed must be routed via the Audio Matrix e Acomplete MATRIX flow chart can be found in the Technical Reference Manual The following example lists some of the Destinations Column for a specific MSD model All Destination Names regarding physical Inp
49. sed for these calculations are a window of continuous audio samples the beginning and the end of the 1024 samples need some smoothing in order not to develop erro neous results This data smoothing is known as windowing The MSD system is implemented with four different windowing functions listed below 1 Rectangular Window RECT Samples are multiplied by a factor of one i e by themselves This window function is merely a method of disabling windowing of the data The Rectangular Window provides the highest selecti vity but the lowest dynamic range MSD600 200 Series User s Manual 2 Hanning Window HANN The Hanning Window is useful in most applications and should be selected as the default The Hanning Window provides high dynamic range but low selectivity 3 Hamming Window HAMM The Hamming Window is ideal for applications where the requirement for the dynamic range is known The HAMMING Window compromises between selectivity and dynamic range 4 Nuttall Window NUTT The Nuttall Window is especially useful for distor tion measurements The Nuttall Window provides the highest dynamic range and compromises the selectivity e The recommended window function for most applications is the HANNING window 59 60 MSD600 200 Series User s Manual 14 Peak Program Meter METER UTILITY SCALE O PEAK o HOLD O DUAL CLEAR O 20dB All control parameters used for the Peak Program Press the METE
50. set you must When the YES key has been hit the MSD will first remove WRITE PROTECT in the INFO menu automatically put the WRITE PROTECT back on Then go to the PRESET menu Select the desired When saving to Preset O Base Setup the YES key preset number 0 10 by using the arrow Up Down must be held down for about 10 seconds This is keys 1 Then press SAVE and the MSD will meant as an extra protection against undesired prompt you for acknowledgment YES overwriting of the already existing parameters in this important preset location 32 MSD600 200 Series User s Manual 9 4 Edit a Preset Name EDIT Just as it is possible to alter the Matrix Column Names it is also possible to alter any of the 11 pre set names Please refer to section 8 3 Matrix Label Re naming EDIT in this manual for a detailed description of how to use the EDIT function t Remember to turn off the WRITE PROTECT func tion in the INFO Menu before you can enter the EDIT Menu Also do not forget to return to the INFO Menu and put back the WRITE PROTECT when finished MSD600 200 Series User s Manual 33 10 Signal Generator Menu SIG GEN The SIGNAL GENERATOR menu controls all signal generator functions To access this menu press SIG GEN in the MAIN Menu e Note The level and frequency for PULSE EBU Pink and White Noise Test signals are set via the SINE function The Used Test Tone Signal Generator enables a low distortion ton
51. sets Please refer to the appendix of the Technical Reference Manual for details regarding the available factory presets The MSD is designed to boot from preset 0 BASE SETUP It is therefore a good idea to save the pre ferred setting in this preset before you power off the MSD In that way the MSD will always be ready to use Preset O is not one of the factory presets but is programmed with a logical ready to use setting enabling the MSD to work right out of the box The Original Base Setup can always be recalled from one of the unused presets labelled USER From the factory these presets contain the same setting as the Base Preset A full detailed description of the MSD PRESET menu can be found in Section 9 Preset Menu MSD600 200 Series User s Manual 3 The Main Menu The MAIN Menu shows three types of information simultaneously the Phase Correlation Meter or Phase Meter left the Audio Vector Oscilloscope or surround sound monitor Jelly Fish centre and the Peak Program Level Meter PPM right The Vector Scope or Jelly Fish The Phase Correlation Meter LS ala N CENTER Below the three main displays is the Text Line menu that has eight corresponding multi function soft keys directly located underneath After Power Up or User Reset the MSD will always restart in the Main Menu configured as per the set ting found in the preset O Base Setup The Peak
52. sing any of the saved measurements is done in the Operation Mode Menu OP MODE see next section To save a measurement first select the memory number MEM 1 or MEM 2 to be used Then press the SAVE key to store the current measure SAVE RESET PRESET ment The stored values are SNAP SHOTS taken at the exact time the SAVE key has been hit Just like a preset the two Memory locations are saved in the FLASH Memory The memories save the content even after a power down When enter ing the 1 3 Band Octave Analyser these two Memory presets are loaded into the normal work ing memory of the MSD This memory will however NOT be saved when leaving the Analyser Since the SAVE function saves the measurement into this memory any stored measurements done with this function will be lost when leaving the Analyser Menu MSD600 200 Series User s Manual 47 As opposed to the SAVE function the PRESET function will save the snap shot into the FLASH memory The SAVE function will normally be used when the two memory locations already contain valuable data used by the operator and the need of an additional temporary snap shot is present In such a case the SAVE function will temporary override the Memory locations but only until exiting the Analyser Menu When entering the Analyser Menu again the FLASH saved memory snap shots crea ted by the PRESET will once again be ready for use To erase both saved FLASH memory loca
53. standard is appearing in the film industry worldwide to maintain a uniform sound level for all movie theatres and for all material including fea ture films trailers and commercials To control this standard the Leq m loudness func tion is used The Leq m value is the true average CCIR 468 weighted of the audio power level of any signal passing through the meter It is especially well suit ed to the film industry to determine the so called Soundtrack Annoyance which is caused by excessive loudness levels during movie playback The Leq m software may be used on soundstages optical recording and film QA installations to audi tion final two and six channel mixes The Leq m is displayed on a special loudness PPM bar as well as in a designated numerical display on the MSD screen The value is shown in dB with three digits in the 00 0 format The Trip function Threshold set under the LEQ SET Menu will indicate when the signal exceeds the pre defined maximum level by changing to a flashing red colour 68 MSD600 200 Series User s Manual 14 1 2 1 Setting the LEQ m LEQ M To use the Leq m scale enter the METER UTILITY and a separate window with the reading in digital Menu This opens the UTILITY Menu from which figures in the 00 0 format appears The LEQ m you can select the LEQ M key The scale is now display also has TIMER hh mm ss CAL the linear loudness scale with a range of 72 95 dB
54. stem the LEQ m have to be calibrated against a known sig nal level For this matter it is specified that a 85 dB 1 kHz sine wave must be used as a reference level 400 Hz when calibrating up against a LFE Surround Sound Channel To calibrate select the PPM channel to measure the reference signal with Selected by the Up Down keys 1 next to the CAL function and press the CAL Key The calibration process takes approximately 15 seconds During this time the LEQ m Display will show 15 in the numeric data field and count down to zero while calibrating Calibration of the selected channel is now completed e To be able to enter the LEQ m Calibration function Write Protect must the turned off Remember to turn Write Protect back on when leaving the Calibration Menu MSD600 200 Series User s Manual 71 14 1 2 3 Using the LEQ m START STOP EXIT START STOP After selecting the LEQ m scale start measuring Attention must be paid to the last PPM bar which LEQ m over time by pressing the START key always will be used as a LFE Channel This channel When the necessary measurement time has is internally filtered through a 400 Hz low pass elapsed time shown on the timer in the LEQ m filter display press the STOP key e By using the I O Remote Module 1023 for the e When leaving the LEQ m Menu the MSD will MSD600M it is possible to remote control change scale back to the one selected under several of the LEQ m func
55. t integrated into the Utility DSUB connector For more details please refer to External Sync flow chart in the Technical Reference Manual O EXT SYNC When entering the SETUP Menu the SYNC STA TUS Menu is shown informing if External Sync is selected and if an External Sync error has occurred e An EXT SYNC ERROR alert will appear on the Vector Scope if a selected External Sync source is failing For detailed information regarding the External Sync status it is advisable to use the AES 3 Input Option Menu Please see section 8 2 4 in the manual MSD600 200 Series User s Manual 39 11 2 LCD Back Light Menu LCD eur 4 z aera o To adjust the LCD display s brightness enter the LCD menu by pressing the LCD key from the Main Menu Adjustments are made by stepping the LIGHT arrow keys UP or DOWN This will adjust the background lighting for the best possible clarity of viewing Adjustments can be made from 8 brightest to 1 least bright After making the above adjustment press EXIT twice to return to the MAIN Menu Since the Back Light setting is considered a crucial setting the WRITE PROTECT must be disabled before it is possible to enter the LCD Menu 40 MSD600 200 Series User s Manual 11 3 Set Meter Reference SET REF The Set Reference feature lets the user offset the internal factory calibrated reference used by the Program Peak Meters There is a separate control for offsetting the Refere
56. th your MSD product and mail or fax it to DK sions of this model Audio to obtain the latest information about new products If your Registration Card is missing you may use this page instead Name Company Address Comments Postcode City Country Phone Fax MAIL OR FAX TO E mail DK Audio A S Model No Marielundvej 37D DK 2370 Herlev Denmark Unit Serial No E mail info dk audio com Purchase Date Fax 45 44 85 02 50 Purchased from dealer
57. tions press the RESET key e The Memory snap shot currently used in the selected Operation Mode is the one highlighted in the MEMORY Menu 48 MSD600 200 Series User s Manual 12 3 Operation Modes for the 1 3 Octave Analyser OP MODE O INPUT 01 MEM o1 MEM o TMEM The 1 3 Band Octave Analyser can be operated in Selecting the I4 MEM or I MEM results in dis four different modes Besides analysing the Input playing the current measured Input signal Added Signal specified by the Audio Matrix it is also pos I MEM or subtracted I MEM with the selected sible to modify the measured Input signal in relation Memory Location to the two saved Memory snap shots e To temporarily display the content of the To use the Analyser in Normal Mode displaying the selected Memory Location press the TMEM analysed results from the INPUT signal press the Key This key can be used to verify any taken INPUT key measurements MSD600 200 Series User s Manual 12 4 Using the Freeze and Gain Offset Function FREEZ GAIN ox lal wo Tr l To momentarily freeze the Analyser display the FREEZ key can be selected This function can be very useful when a non continous Input signal have to be saved before further analysed such as being modified with a measurement previously saved in one of the two memory locations To maximise the dynamic area of the Analyser the Input signal can be amplified up to 20 dB using the GAIN arrow
58. tions the METER SCALE Menu To keep the LEQ m scale it must be selected from the SCALE Menu 72 MSD600 200 Series User s Manual 14 1 3 Session Log SES LOG SESSION LOG hh mm ss 00 00 25 STOP RESET DK AUDIO MSD600M Session Report Title Date Time Code Source OFF Logging Interval sec 60 Starting Time Ending Elapsed Max Rec Time Time Time 00 00 00 00 00 00 00 00 04 00 00 Settings Number of Channels 6 Scale Type Full scale samples for over 5 I Milliseconds for a mute ms Upper limit for a mute dB 70 3 Overs Found Mutes Found 0 0 Session Time Stamped Information EXIT PgDn SELECT SCROLL SCROLL MSD600 200 Series User s Manual 73 The MSD S Session log records can be viewed on the main screen of the unit or can be printed out to a connected printer via the RS232 interface found on the Utility Module at the rear of the cabi net Depending on MSD Model When entering the Session Log menu by pressing the SES LOG key the Session log Display will open displaying the fol lowing information Session Title 4 Date Time Code Source Logging Interval seconds the Start End Elapsed and Maximum Recording times dur ing the session The display also shows the Number of Channels used Scale Type Selected number of full Scale Samples for over samples Milliseconds for a mute the Upper Limit for a mute
59. ure of the audio signal thus making it easy to recognize mono or stereo patterns Add options such as Spectrum Analysers FFT amp 1 3 Octave Surround Sound Monitoring Jelly Fish Session Log Loudness and Clock Timer functions and you have everything that you could possibly want from a complete metering system 4 MSD600 200 Series User s Manual 2 Quick Start The MSD is equipped with eleven user definable presets for different applications On delivery a given number of these will be pre configured as factory presets allowing you a quick and easy start Each MSD model will have its own set of factory presets reflecting the functionality of the specific model e It is recommended for first time users to start up your MSD session by recalling one of the factory presets All the presets will be fully set with selected para meters such as inputs PPM scales oscilloscope modes surround or stereo reference levels and colour coding etc To access a preset function press PRESETS from the MAIN Menu then select the required preset from the PRESET list by scrolling up down with the arrow keys 1 The highlighted preset green can now be entered by pressing the RECALL key Select the preset closest to your individual use of the MSD The screen automatically adjusts to the selected number of PPM channels e For each MSD model a given number of the 11 user definable presets is pre configured as factory pre
60. ut Outputs are set from the factory to reflect the specific MSD model All Source Destination names in the Matrix can be changed by the EDIT func tion found in the MATRIX Menu will be explained later in this manual MSD600 200 Series User s Manual 13 Line Name Destination Output Line Name Destination Output 1 DM1 Reserved for future expansion 53 PHAS Phase Meter CH 1 2 DM1 Reserved for future expansion 54 PHAS Phase Meter CH 2 33 ANA1 Analogue Output 1 Left 65 CH 1 PPM Selection PPM bar no 1 34 ANA2 Analogue Output 2 Right from the left 35 AES1 Digital Output 1 Left 66 CH2 PPM Selection PPM bar no 2 Output module 1 from the left 36 AES1 Digital Output 1 Right Output module 1 72 CH8 PPM Selection PPM bar no 8 from the left 49 SUM1 Sum Difference Input 1 50 SUM2 Sum Difference Input 2 51 SPEC Spectrum Analyser FFT and 1 3 band Octave 14 MSD600 200 Series User s Manual 8 1 Navigating the Matrix 1 1 PgUp PgDn SELECT A very easy and straightforward strategy has been implemented to navigate the Audio Matrix Two Up Down keys 1 two Page Up Down keys PgUp PgDn and one SELECT key to select the highlighted column To assign an input to a specific output destination simply move the green highlighted column line using the arrow and page keys to the desired de stination output and press the SELECT key The Input Column menu will now open Repeat the selection
61. y s manual MSD600M MSD600C 5 1 MSD600C III MSD200C MASTER STEREO DISPLAY Software Version 3 2 Use DK AU DIO www dk audio com MSD600 200 Series User s Manual Copyright 2002 DK Audio A S Herlev Denmark All rights reserved No part of this publication may be reproduced or distributed in any format or by any means without prior written consent from DK Audio A S Denmark Trademarks Analog Devices is a registered trademark of Analog Devices Inc USA Crystal is a registered trademark of Cirrus Logic Inc USA AKM is a registered trademark of Asahi Kasei Microsystems Co Ltd Japan DK Scale is a registered trademark of DK Audio A S Denmark Manual Revision 1 1 October 2002 MSD600 200 Series User s Manual Contents 8 2 1 Mono Stereo Option 16 8 2 2 Phase Correlation Audio Vector Oscilloscope and Jelly Fish Option 17 8 2 2 1 Integration Time 17 8 2 2 2 Meter Compression Function 18 1 Introduction 1 8 2 2 3 Colour Select 19 1 1 This Manual 1 8 2 3 Option Menu for the PPM 1 2 Audio Metering 2 presentation 20 8 2 4 AES Input Option 22 2 Quickstart 4 8 2 4 1 SRC Bypass and External Sync 22 8 2 4 2 AES Receive Error 23 3 The Main Menu 5 8 2 4 3 AES Input Status 24 8 3 Matrix Label

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