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m908 User Manual, Rev. G

1. LCD Display screen: This color LCD displays all operating parameters and setup menus.
2. INPUT Select switches (8x): These switches select the input source to be monitored. See

operation for details.

3. DIM (x-feed): Dims the monitor system by a pre-programmed level. Push-hold enables/disables

the headphone cross-feed circuit. See

operation for details.

4. MUTE: Mutes the monitor system. See

operation for details.

5. MONO (L-R): Sums the Left and Right channels (L+R). Push-hold for difference (L-R). See

operation for details.

6. CR1, CR2, CR3: Control Room Speaker system select. See

operation for

details.

7. MON > CUE (spl clear): Sends the current source being monitored to the CUE sends. Push-

hold clears the maximum spl field in the sound pressure level meter. See

operation

for details.

8. SETUP: System Setup access. Push-Hold for System Workflow setup. See

and

for details.

Page 12 of 135

Table Of Contents

TALKBACK

VOLUME

push for phones

MUTE

SETUP

MON > CUE

CR 2

CR 3

MONO

x-feed

DIM

spl clear

L - R

L

C

R

RS

LS

SUB

RB

SOLO/MUTE

A

LB

B

C

CR

1

2

1

3

4

7

8

9

10

11

12

13

5

6

14

Illustration 5: RCU Front Panel

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Содержание m908

Страница 1: ...on 1 0 1 RCU Firmware version 1 0 1 Please visit https gracedesign com support documents for the latest m908 firmware and documentation See the Firmware Update Procedure section of this manual for details Grace Design Lyons CO 1 303 823 8100 www gracedesign com info gracedesign com Page 1 of 135 Table Of Contents ...

Страница 2: ...ers Layout Icons 21 5 3 3 3 Control Room Speaker Output 22 5 3 4 4 Control Room Monitor Level 22 5 3 5 5 Headphone Crossfeed 22 5 3 6 6 Headphone Monitor Level 22 5 3 7 7 SPL Meter 23 5 3 8 8 Clock Source and Status 23 5 3 9 9 System Sample Rate 23 5 4 INPUT SELECT 23 5 4 1 Input Summing Mode 24 5 4 2 Direct Input Offset Adjustment 26 5 5 DIM 28 5 6 X FEED 28 5 7 MONO L R 30 5 8 MON CUE 31 5 9 MUT...

Страница 3: ...tup 105 6 3 25 System Setup 109 7 Option Modules 111 7 1 ADC Option Module 111 7 2 Dante Option Module 113 7 3 DigiLink Option Module 114 7 4 Phono Preamp Option Module 117 8 USB Audio Setup 118 8 1 Computer Audio Requirements 118 8 2 Windows USB ASIO Driver 119 8 2 1 Installing USB ADIO Driver 119 8 2 2 Using The USB ASIO Driver 121 9 Firmware Upgrades 123 9 1 1 Firmware Update Procedure 124 10 E...

Страница 4: ... Ordinary Protection This equipment should not be exposed to dripping or splashing Avoid placing objects filled with liquids such as vases or glasses on this equipment Class I Equipment grounded type Electrical rating 90 240V 50 60Hz 50W Mains supply voltage fluctuations are not to exceed 10 of the nominal supply voltage Pollution Degree 2 Installation Over voltage Category II for transient overvo...

Страница 5: ...ign com 303 82308100 x105 The current version of this manual related documents and the latest m908 firmware can be found at https gracedesign com support documents 3 Overview And Features 3 1 Features 24 Channel DSP for immersive surround formats such as ATMOS DTS X and Auro 3D Manage playback systems from mono through 22 2 16 User definable input sources Summing of up to 3 input sources 3 user de...

Страница 6: ...t RCU Remote Control Unit and PSU Power Supply Unit Below is a description of the connections controls and indicators for each component 3 2 ACU Description The 2U ACU chassis houses all of the analog and digital audio IO DSP processing and control IO The audio signal processor is a 1GHz 32 bit floating point unit which allows for highly accurate and low latency signal processing 2GB of DDR2 ram a...

Страница 7: ...G DSP ADC OPTION ANALOG 16CH ANALOG 2CH AUDIO OUTPUTS DAC ANALOG 16CH HP AMP RCU DIGITAL OUTPUTS AES DIGITAL 24CH USB 8CH DANTE 32CH CLOCK s Lock PLL WORD CLOCK I O IN OUT ACU TALKBACK RCU TALKBACK DIGITAL INPUTS AES DIGITAL 24CH USB 24CH ADAT 16CH TOSLINK 2CH DANTE 32CH SPDF 2CH AES 2CH TALKBACK OUT Illustration 1 Audio and Clock Flow Diagram ...

Страница 8: ...y crossfeed circuit provides natural imaging and minimizes listening fatigue 2 Power indicator LED Green LED illuminates solid green under normal conditions 3 4 ACU Rear Panel Connections Page 8 of 135 Table Of Contents 1 2 Illustration 3 ACU Front Panel AUDIO INPUTS SYNC DELAY INPUT LEVEL OFFSET BASS MGMT SPEAKER DELAY INPUT SUMMING AUDIO OUTPUTS SPEAKER VOLUME SPEAKER LEVEL OFFSET ROOM EQ DOWN M...

Страница 9: ...6 7 8 9 20 21 22 1 2 10 11 3 4 12 13 14 15 16 17 18 19 TB I N TB OUT 1 8 BAL I N UNBAL I N R L L L ADC 1 R CR 3 OUT R MADE I N LYONS CO USA CUE CR EXT CR 1 OUT CR 2 OUT 1 8 9 16 14 1 14 1 14 1 m908 RCU AES3 1 I N OUT DC I N A140 M908 ETHERNET AES3 I N S P DI F OP TI CAL I N AUDI O WC I N WC OUT OP TI ON I O AES3 3 I N OUT AES3 2 I N OUT HOST TALKBACK SWI TCH ADC 2 m908 REFERENCE MONI TOR CONTROLLE...

Страница 10: ...able 48V phantom power The talkback signal is fed to an ADC and sent to the DSP section and can also sent to the Talkback output XLR connector when talkback is active 10 External Talkback switch jack 1 4 TRS Wiring a normally open switch to this jack will allow for another talkback control The Ring of this connector carries current limited 5V for powering a tally LED See Cable Diagrams 11 Ethernet...

Страница 11: ...n the 1 4WVGA display while the most used functions have dedicated switches There is a 1 4 headphone jack on the rear of the RCU for convenient access to the m908s high performance headphone amplifier The RCU sits on a tilting base so it can be adjusted to the most comfortable angle The built in talkback microphone on the RCU also doubles as an accurate sound pressure level SPL meter The RCU is po...

Страница 12: ...nnels L R Push hold for difference L R See MONO operation for details 6 CR1 CR2 CR3 Control Room Speaker system select See CR1 CR2 CR3 operation for details 7 MON CUE spl clear Sends the current source being monitored to the CUE sends Push hold clears the maximum spl field in the sound pressure level meter See MON CUE operation for details 8 SETUP System Setup access Push Hold for System Workflow ...

Страница 13: ...tails 3 7 RCU Rear Panel Connections 1 m908 ACU DB15 Serial control cable connection to ACU 2 Headphone Jack 1 4 TRS Carries stereo headphone signal from ACU headphone amplifiers This jack is wired in parallel with ACU front panel headphone jack 3 USB Host USB A USB host connection for user workflow export import 4 Microphone Built in mic for talkback and spl measurement 3 8 RCU Tilting Base The R...

Страница 14: ...time A low speed serial communication link allows the power supply unit to communicate voltage rail status to the main ACU processor Under normal operating conditions the four front panel Status LEDs will be solid green If a DC output of power supply module 1 becomes too low or too high the corresponding LED will flash once repeatedly If a DC output of power supply module 2 becomes too low or too ...

Страница 15: ...is designed with Korrvu suspension inserts which provide the best protection from the dubious underworld of freight handling so save your packaging material Inner boxes will contain all the items listed below If you think you are missing anything give your dealer or us a call and we ll get you taken care of right away 4 1 2 Your box will contain 1pc Audio Control Unit ACU 1pc Remote Control Unit R...

Страница 16: ...ed to connect the PSU to the ACU This cord can be identified by the 8 pin circular connectors at each end Please note that the DC power cord should be connected before the AC power is turned on This prevents incorrect power sequencing which can cause damage to the audio circuits To avoid any interference with the low level audio circuitry the power supply should be located at least 3 1m from the A...

Страница 17: ...al for details on configuring the optical input connectors SPDIF Digital Stereo Input RCA Phono jack 75Ω This input will receive PCM audio signal sample rates from 44 1kHz to 192kHz USB Class 2 Audio Interface USB Type B jack This interface is capable of 24 channel input from host computer and 8 channel output to the host computer Use a standard USB type A to type B cable included with your m908 T...

Страница 18: ... frequency When the signal is restored the PLL will smoothly re acquire lock WORD CLOCK OUT BNC 75Ω The word clock output allows the user to synchronize other digital audio equipment to the m908 When the system menu setting clock output is set to external this connector output is a buffered copy of the signal on the word clock IN jack This mode is useful for daisy chaining to other units in a syst...

Страница 19: ... 30ºC 86ºF 5 Operation Out of the box the m908 comes with a many factory presets that will allow for quickly connecting the most common input sources cue and speaker systems If your installation requires customization then see the Workflow Setup and Setup sections of this manual Otherwise read this section for the basics on operating the m908 The m908 uses a closed loop control system to ensure th...

Страница 20: ...mmended that power amplifiers and powered monitor speaker be turned on after the m908 to avoid any transients reaching the loudspeakers The illuminated switches on the RCU will go through a test sequence and then the LCD display will indicate that the system firmware is loading This process takes approximately 1 minute Once the system has loaded the RCU will display the Home Screen and the m908 wi...

Страница 21: ...t will be highlighted in blue With Input Summing Mode active the selected input s will be highlighted in green 5 3 2 2 Control Room Speakers Layout Icons The Control Room speaker system layout window displays a graphic representation of the currently selected speaker system There are 4 types of speaker icons 1 Front Surround and Back 2 Top 3 SUB 4 Height Page 21 of 135 Table Of Contents Illustrati...

Страница 22: ...mbers which will be green when the encoder is controlling the Control Room level The default volume range is 0 100 in 0 5dB steps 0 is mute and 96 is unity gain The Control Room Monitor Level can also be displayed with a user defined reference level This way the volume readout can be calibrated to SPL See Monitor Control setup for details on configuring the Control Room Monitor Level display 5 3 5...

Страница 23: ... this manual for details 5 3 9 9 System Sample Rate The sample rate display indicates the sample rate detected on the input connector If the input data or sample rate are invalid then the sample rate display will be blank 5 4 INPUT SELECT The m908 features a total of 16 input sources which are accessed with 8 dedicated INPUT Select switches in 2 rows of 4 above and below the LCD display Each INPUT...

Страница 24: ...switches for the channels that are to be removed from the sum then press the INPUT select switches for the channels that are to be added to the sum Pressing any of the active INPUT select switches will toggle that input on and off in the sum To exit input summing mode simply de select the inputs that you don t want in the sum When only one input is active push that switch and summing mode will tur...

Страница 25: ...hronous will be summed but there may be glitches due to clock drift Inputs that do not have identical Input sync delay settings can not be summed together This is because the delay happens after the input summing section in the m908 Attempting to sum inputs with different sync delays will cause the following message to appear Page 25 of 135 Table Of Contents Illustration 13 Input Summing Error clo...

Страница 26: ...med input signals the meter output source must be set for follow monitor post in System setup 5 4 2 Direct Input Offset Adjustment In some applications the level of an input may need to be adjusted frequently To avoid having use Input Select mode to make these changes the m908 features a direct access input offset control While in the home screen press and hold a single input button and turn the e...

Страница 27: ...ther input button is pressed simultaneously which engages input summing mode This feature is available for active inputs inactive inputs and in summing mode Changes made to input offsets via the direct access mode will not be saved in the workflow unless Setup mode is entered and then exited Page 27 of 135 Table Of Contents Illustration 17 Direct Input Offset on active Input Illustration 18 Direct...

Страница 28: ... cross feed filtering and delay circuits to simulate hrtf head related transfer functions Press hold the DIM x feed switch to toggle Headphone Crossfeed on and off Crossfeed is indicated in the upper right corner the phones volume window When listening to loudspeakers in a room your left ear hears sound primarily from the left speaker and vice versa but also receives a signal from the right speake...

Страница 29: ...el the very complex level delay and frequency response characteristics of the head the cross feed circuitry in the m908 gives the brain some of the basic clues it needs and the result is a very pleasing simulation of an acoustic space We chose the parameters of the cross feed circuit to find a good compromise between accurate imaging and tonal neutrality For recreational listening there could be m...

Страница 30: ...ush hold switch Toggles the L R mode on and off Disables MONO if currently active The MONO and L R processing can be applied to the Control Room speakers and or the headphone outputs The signal source for the MONO and L R processing can be the Left and Right channels of whatever input is being monitored The output of the MONO and L R processing can be the Left and Right speakers or the Center spea...

Страница 31: ...up section of this manual The Control Room speaker select switches are exclusive and only one can be selected at a time The currently selected speaker switch will illuminate green 5 11 BASS MANAGEMENT The m908 includes comprehensive Bass Management control Each speaker in the Control Room system can be individually configured for crossover frequency high pass filter slope and low pass filter slope...

Страница 32: ...stem level settings which are contained in the Monitor Control setup See the Monitor Control setup section of this manual for configuration details CAUTION When enabling or disabling Bass Management in Monitor Control Setup it is recommended that you turn your Control Room volume down to 0 Page 32 of 135 Table Of Contents ...

Страница 33: ...quency response aberrations in your control room Page 33 of 135 Table Of Contents Σ IN 1 OUT 1 50 150Hz LPF 6 12 18 24dB oct SUB OUT L IN LFE 80 120Hz LPF IN 2 3 OUT 2 3 Σ SUB OUT R 20 150Hz LPF 20 150Hz HPF OFF 50 150Hz HPF 6 12 18 24dB oct OFF OFF Σ SUB OUT C SUB MODE SUB MODE WORKFLOW DEPENDENT WORKFLOW DEPENDENT 0dB 10dB Illustration 22 Bass Management Flow Diagram ...

Страница 34: ...itor Control setup The available downmix templates are identical to the downmix templates for the Control Room outputs but are stereo output only The Cue input and output connector routing is configured in CUE setup Note that both left and right channels of a cue input path must be assigned to the same connector The Headphone amplifier can be set to output any one of the Cue outputs This is conven...

Страница 35: ... There is a microphone built in to the RCU and a talkback mic amp built in to the ACU The talkback microphones can be controlled from multiple trigger sources and routed to multiple CUE paths Trigger sources include the RCU TALKBACK switch an external talkback switch jack on the ACU A B and C User switches and GPIO input pins As well GPIO pins can be programmed to output a logic level tally when t...

Страница 36: ... SWITCH CUE ASSIGN TALKBACK SWITCH RCU EXT A B C OR GPIO RCU TALKBACK MIC SWITCH ASSIGN TALKBACK SWITCH RCU EXT A B C OR GPIO ACU TALKBACK MIC SWITCH ASSIGN TALKBACK SWITCH RCU EXT A B C OR GPIO TALKBACK SWITCH CUE ASSIGN TALKBACK SWITCH RCU EXT A B C OR GPIO Σ ACU TALKBACK OUT CUE 1 HP INPUT HP CUE DOWNMIX MON CUE CUE INPUT MON CUE CUE INPUT Illustration 24 Talkback Cue Flow Diagram ...

Страница 37: ...o or mute mode When in Solo mode the SOLO MUTE switch will illuminate green Pushing any of the 8 SOLO MUTE switches will toggle solo mode on and off for that channel In the speaker layout window the word solo will appear in green and channels that are not soloed will be grayed out When in Mute mode the SOLO MUTE switch will illuminate red Pushing any of the 8 SOLO MUTE switches will toggle mute mo...

Страница 38: ...8 utilizes a single rotary push button encoder for the Control Room speaker volume level Headphone volume level and volume level preset recall Pushing the VOLUME encoder toggles between Control Room and Headphone control Turning the VOLUME encoder increases and decreases the monitoring level in 0 5dB steps The VOLUME control can also be set to coarse fine mode where each volume step is 4 5dB In th...

Страница 39: ...ariety of system commands Available uses are additional talkback triggers downmix control and GPIO triggers See the A B C User Switches Setup section of this manual for configuration details When configured for Talkback the User switches will behave just like the dedicated Talkback switch and will illuminate RED when active When configured to be GPIO triggers the User switches will toggle on and o...

Страница 40: ...post level offset This option allows the Meter source to follow whatever is being monitored on the Control Room speakers The signal level follows whatever input level offset is set for the currently selected input Follow DSP output This option sources the meter output from the final outputs for the Control Room speakers The meter data will have all speaker processing applied volume delay offset Pa...

Страница 41: ...values in most cases Downmix templates are accessed by configuring one of the A B or C User switches to activate a downmix To enable a downmix mixer one of the A B or C User switches must be assigned to downmix mode with a downmix template selected See the A B C User Switches Setup section of this manual for details Up to three downmix templates can be used by assigning each A B and C switches to ...

Страница 42: ...al Rev G Speaker Channels for Downmix Operation Speaker Name Abbreviation LEFT L CENTER C RIGHT R LEFT MIDDLE SURR LMS RIGHT MIDDLE SURR RMS LEFT BACK LB RIGHT BACK RB CENTER BACK CB Page 42 of 135 Table Of Contents ...

Страница 43: ...ic II Page 43 of 135 Table Of Contents CENTER LEFT RIGHT CENTER BACK LCRS CENTER LEFT RIGHT RIGHT MIDDLE SURR LEFT MIDDLE SURR LCRS2 RIGHT L R LEFT 7 1 CENTER LEFT RIGHT RIGHT MIDDLE SURR LEFT BACK RIGHT BACK LEFT MIDDLE SURR 5 1 CENTER LEFT RIGHT RIGHT MIDDLE SURR LEFT MIDDLE SURR Illustration 27 Downmix Template Speaker Layouts ...

Страница 44: ... x C 6 2 dB x LMS LB 1 2dB x RMS RB 7 1 Lo Ro L L 3 dB x C 3 dB x LMS LB R R 3 dB x C 3 dB x RMS RB 5 1 to LCRS CB 3dB x LMS 3dB x RMS 5 1 to LCRS2 LMS 6dB x LMS 6dB x RMS RMS 6dB x LMS 6dB x RMS 5 1 to Lt Rt L L 3 dB x C 3 dB x LMS 3 dB x RMS R R 3 dB x C 3 dB x LMS 3 dB x RMS 5 1 to Lt Rt Pro Logic II L L 3 dB x C 1 2 dB x LMS 6 2 dB x RMS R R 3 dB x C 6 2 dB x LMS 1 2 dB x RMS 5 1 to Lo Ro L L ...

Страница 45: ... 4 5dB 0 596 6 0dB 0 500 See the Downmix setup section of this manual for configurations details 5 20 Headphone Source Select The Headphones if enabled in the Workflow Setup can be sourced from several signal sources For normal monitoring of what is being played in the Control Room the headphones can be sourced from the CR Left and Right channels If a surround source is being monitored in the Cont...

Страница 46: ...ly to this connector as well Headphone crossfeed will only be present in the headphone amplifier outputs The illustration below shows the headphone selection 5 21 Clocking The m908 System Clock can run from an internal crystal reference or it can lock to external Word Clock or digital audio input See Clock Source Setup for configuration details The m908 will attempt to lock to the clock source sel...

Страница 47: ...e same sample rate and be synchronous to the clock source If the m908 system clock source is set to one of the Internal sample rates then the m908 is the clock master Any digital audio source connected to the m908 will need to be synchronized to the m908 word clock output If there is a digital input source that can not be synchronized to an external clock CD player for instance then set the overri...

Страница 48: ...k is valid for digital inputs or system clock is valid for analog only inputs m908 plays audio with active input clock for digital inputs or system clocksource for analog only inputs For inputs asynchronous to system clocksource configure input clock override Fix invalid clock override Configure system for a clocksource that is synchrous to input Flashing Red Indicated clocksource is invalid or do...

Страница 49: ...tal audio workstation interface The m908 locks to the incoming word clock with an ultra low jitter s Lock PLL The PLL has a fast lock mode which rapidly acquires lock and then switches to a high jitter rejection mode with a loop bandwidth of 0 5Hz This provides exceptional jitter rejection for the ADC and DAC sample clocks In the event of a dropout or loss of incoming word clock signal the intelli...

Страница 50: ...el data and low for right channel data 5 23 Error Messages The ACU monitors several hardware systems for fault conditions and will report errors if there are any detected faults 5 23 1 ACU Over Temperature The ACU contains a temperature sensor on the circuit board near the main DSP processor If the temperature rises above a safe level for the processor then the RCU will report an over temperature ...

Страница 51: ... this will be communicated to the ACU and a warning will appear on the RCU display screen If this error occurs contact Grace Design Technical Support 5 23 3 Communication Error The RCU and ACU communicate over a balanced RS485 serial link If the RCU experiences a communication error this screen will be displayed Page 51 of 135 Table Of Contents Illustration 30 ACU Temperature Error Illustration 31...

Страница 52: ...s error message is shown 6 System Setup 6 1 Introduction There are two setup menus for the m908 Workflow Setup and System Setup Workflows are system presets that determine the mode that the DSP section of the m908 will operate in Workflow Setup allocates the 24 DSP channels for the speaker system cue system stereo headphone monitor and talkback system Speaker system formats range from Stereo to 24...

Страница 53: ...System Setup menu the input sources and speaker outputs can be configured Input sources can be assigned to hardware connectors and routed to the appropriate DSP channels Speaker systems can be assigned to hardware output connectors and routed from the appropriate DSP channels The m908 contains a large set of workflow templates for the most common speaker system formats and typical input and output...

Страница 54: ...e corrupted 6 2 1 Workflow Setup Main Screen To setup the system workflow push long hold the SETUP switch for 3 seconds The SETUP switch will start flashing quickly and the display will have red colored bars across the top and bottom of the screen When in workflow setup monitor control functions are held in their current state and cannot be changed until workflow setup is exited The top bar displa...

Страница 55: ...en is divided in to two main windows In the right hand window there is a list of all of the available user workflows If this is a new m908 there will be only one workflow listed ATMOS 7 1 4 The currently loaded workflow will be highlighted in the list At the top of the list is the exit menu option In the left window is a graphic representation of all of the assigned speaker locations for the workf...

Страница 56: ...ave your changes 3 rename Opens the workflow name editing screen with keyboard 4 channel setup Enters channel setup mode where speakers cues talkback mics and headphones can be added or subtracted from the workflow In the left window all of the available speaker positions will be visible If a speaker position is enabled for the current workflow it will be white If it is not enabled it will be gray...

Страница 57: ...CK 2 TOP RIGHT WIDE RIGHT WIDE HT SURR RIGHT BACK 2 TOP LEFT FRONT SURR LEFT FRONT HT SURR RIGHT FRONT SURR RIGHT FRONT HT SURR SUBS LEFT MIDDLE SURR LEFT MID HT SURR LEFT SUB RIGHT MIDDLE SURR RIGHT MID HT SURR CENTER SUB LEFT BACK SURR LEFT BACK HT SURR RIGHT SUB RIGHT BACK SURR RIGHT BACK HT SURR BACKS HEIGHT BACK LEFT BACK LEFT HT BACK LEFT CENTER BACK LEFT CENTER HT BACK CENTER BACK CENTER HT...

Страница 58: ...s Continue scrolling through all of the speakers to get to the cue talkback and headphones setup When one of these switches is highlighted pushing the VOLUME encoder will toggle through the following options cues Each push of the encoder increases the number of stereo cue paths to a maximum of 8 stereo cues The number of cue channels is limited by the available DSP channels For example if there ar...

Страница 59: ... another existing workflow the system will not overwrite the existing workflow A dialog box will appear indicating the conflict Clicking OK in this dialog will return to the Workflow name editing screen so that another name can be entered To cancel Workflow Rename select the CANCEL button on the rename keyboard 6 2 6 Editing Workflow Save and Exit From the Editing Workflow screen clicking the save...

Страница 60: ...upon exiting All monitor levels will be set to zero Clicking YES will execute the changes While the System Workflow is being updated and reloaded the following message will appear Page 60 of 135 Table Of Contents Illustration 40 Save System Workflow Changes Dialog Illustration 41 Save Active System Workflow Changes Dialog ...

Страница 61: ... to be routing changes made in the regular setup menus to reconnect hardware inputs and outputs to the changed DSP channels If changes were made to a workflow that is not the currently loaded system workflow then that workflow would need to be loaded so that routing changes can be made Changes to the workflow name will not have any effect on routing 6 2 7 Editing Workflow Cancel From the Editing W...

Страница 62: ...saved on the m908 While scrolling through the list of workflows the DSP channel allocations will be displayed on the left window Push the VOLUME encoder to select a workflow A confirmation dialog box will appear asking if you want to load the selected preset Select YES to load the workflow in to the m908 The system will be updated Select NO to go back to the Select Workflow To Load screen Page 62 ...

Страница 63: ...coder to select a workflow A confirmation dialog box will appear asking if you want to copy the selected preset Select YES to copy the workflow The list of workflows will now include the new copy Select NO to go back to the Select Workflow To Copy screen The new copy will have the name of the original with 1 added to the end For example copying the workflow ATMOS 7 1 4 will make the workflow ATMOS...

Страница 64: ...ions will be displayed on the left window Push the VOLUME encoder to select a workflow template Selecting a workflow template will open a confirmations dialog box asking if you want to create a new system workflow Click NO to return to the Select Template for New Workflow screen Click YES to create new workflow This will add the new workflow to the list of available user workflows You can load thi...

Страница 65: ...e x x x_ADC1 ADC1 x x x_ADC2 ADC1 ADC2 x x x_ADC1DA ADC1 DANTE x x x_ADC1 DL ADC1 Digilink x x x_ADC2DA ADC1 ADC2 DANTE x x x_ADC2 DL ADC1 ADC2 Digilink x x x_DANTE DANTE x x x_DIGILK Digilink The specific system wide settings for each workflow template are available in spreadsheet format This makes it easier to identify all of the Input and Output routing and system settings built in to each of t...

Страница 66: ...ist of workflows on the USB device DSP channel allocations will be displayed on the left window Push the VOLUME encoder to select a workflow to import Selecting a workflow will open a confirmations dialog box asking if you want to import the selected workflow Select YES to import the workflow from the USB device to the m908 The following message will appear while the file is being transferred Page...

Страница 67: ...hat the m908 experiences a USB file system error the following dialog will appear If you encounter this error message click OK and try again If the problem persists contact Grace Design Technical Support 6 2 12 Workflow export to USB The Select Workflow To Export screen displays a list of workflow files located on the m908 Page 67 of 135 Table Of Contents Illustration 52 Import Workflow from USB E...

Страница 68: ...lling through the list of workflows DSP channel allocations will be displayed on the left window Push the VOLUME encoder to select a workflow to export Selecting a workflow will open a confirmations dialog box asking if you want to export the selected workflow Select YES to export the workflow from the m908 to the USB storage device The following message will appear Page 68 of 135 Table Of Content...

Страница 69: ...ed in the the RCU the system will display the following message when an export to USB is attempted Make sure that the USB memory device is inserted and that it is formatted FAT16 or FAT32 In the unlikely event that the m908 experiences a USB file system error the following dialog will appear Page 69 of 135 Table Of Contents Illustration 56 Insert Proper USB Drive Message Illustration 55 Export Wor...

Страница 70: ...elect Workflow to Delete screen list the available workflows on the system Scroll to the workflow to delete and click A confirmation dialog will appear Click NO to cancel deleting the selected workflow Click YES to permanently delete the selected workflow Page 70 of 135 Table Of Contents Illustration 58 Select Workflow to Delete Illustration 57 Export Workflow to USB Error ...

Страница 71: ...current workflow this message will appear 6 3 Setup 6 3 1 Navigating and Using the Setup Menus From the home screen pushing the SETUP switch once enters the m908 in to Setup Mode The SETUP switch will flash slowly and the following screen will be displayed Page 71 of 135 Table Of Contents Illustration 60 Cannot Delete Active Workflow Illustration 59 Delete Workflow Confirmation ...

Страница 72: ...flow file can be corrupted A push long hold of the SETUP switch will exit Setup Mode and prompt you to discard any changes that were made Clicking NO will return to the previous Setup screen Clicking YES will exit Setup without saving changes Pushing any of the following switches will enter in to the setup for their specific function INPUT SELECT 1 8 DIM MONO MON DUE Page 72 of 135 Table Of Conten...

Страница 73: ...ollowing section outlines the available Setup parameters in the m908 6 3 2 Standard Parameter Editing Throughout the m908 Setup menus there are lists of parameters that can be adjusted edited In each menu the current mode is displayed in red text in the upper left The conventional behavior is that turning the VOLUME encoder will scroll through this list while highlighting the available parameters ...

Страница 74: ...er will again scroll through the list of parameters 6 3 3 Standard Name Editing m908 features a name entry and editing keyboard interface It is used in any setup menu where a name can be created or customized Some examples are INPUT Name SPEAKER Name WORKFLOW Name USER SWITCH Name Page 74 of 135 Table Of Contents Illustration 64 Edit Screen with Parameter Highlighted and Selected for Editing Illus...

Страница 75: ...ower case letters 6 CLEAR Clears all text from the text edit window 7 BKSPC Removes the character to the left of the cursor 8 DEL Removes the character to the right of the cursor 9 CANCEL Exits the Name screen without saving changes 10 ENTER Saves changes and exits the Name screen Note Pressing the SETUP switch while in the Name Number edit screen will exit without saving changes Be sure to select...

Страница 76: ...contain channel routing options The following signal types contain routing configurations Input Sources Control Room Speakers Cue inputs and outputs Meter Outputs The following is an Input Channel Routing setup Page 76 of 135 Table Of Contents L C R RS LS SUB RB SOLO MUTE A LB B C Illustration 67 Name Edit Navigation Keys ...

Страница 77: ...ent channel selection and immediately mute the audio Scroll to the channel parameter and select the desired channel number from the list Upon clicking on a channel number the audio will be routed from the new selection NOTE Input connectors can be used for multiple inputs For instance you can route analog 1 channels 1 and 2 to Cue 1 and also route the same channels to an Input This way you can eas...

Страница 78: ...ng on a connector that is different from the current connector will disables the current channel selection and immediately mute the audio Scroll to the channel parameter and select the desired channel number from the list Upon clicking on a channel number the audio will be routed to the new selection NOTE If a connector channel is selected that in already in use by a Cue or Meter output then the f...

Страница 79: ... right INPUT select switch This screen contains the following list of setup parameters that can be selected by turning the VOLUME encoder knob The available parameters are input name Clicking this option enters the Name Edit Screen see above for Standard Name Editing channel setup Clicking this option enters the Channel Setup screen Page 79 of 135 Table Of Contents Illustration 71 Setup Input Scre...

Страница 80: ...op item is highlighted initially channel name The name of the currently currently selected DSP channel in the left window Pushing the VOLUME encoder enters the Channel Select mode Turning the encoder scrolls through the available DSP channels Pushing the VOLUME encoder selects the highlighted DSP channel for routing See the Standard Channel Routing section of this manual for details on channel rou...

Страница 81: ...5 50us pre emphasis Auto The m908 looks for the emphasis bit in the AES or spdif channel status If present the m908 will apply the de emphasis filter Off The m908 will ignore the emphasis bit and play audio without the de emphasis filter On The m908 will ignore the emphasis bit and play audio with the de emphasis filter Push the SETUP switch to save and exit Setup Mode 6 3 6 Dim setup Push the SET...

Страница 82: ... setup Push the SETUP switch and then any of the CR1 CR2 or CR3 speaker select switches to enter the Setup Speaker screen This screen contains the following list of setup parameters that can be highlighted by turning the VOLUME encoder knob The available parameters are speaker name Clicking this option enters the Name Edit Screen see navigating the Standard Name Editing screen channel setup Clicki...

Страница 83: ...annel Select mode Turning the encoder scrolls through the available channels Pushing the VOLUME encoder selects the highlighted channel for routing etc See the Standard Channel Routing section of this manual for details on channel routing output Selects the speaker output connector for the currently selected speaker Select disabled if the selected speaker is not used in the current speaker system ...

Страница 84: ...and CR3 are all relay selected from the same 8 channel DAC Therefore you can not define a speaker system to contain signals going to the same channel on more than one of these connectors Channels 1 and 2 are switched together to all three output connectors Because of this channels 1 and 2 can only be routed to the same connector Page 84 of 135 Table Of Contents Illustration 76 Channel Routing Conf...

Страница 85: ... a table of connector channels that can not exist in the same speaker system Page 85 of 135 Table Of Contents 14 1 DAC 1 1 DAC 1 2 DAC 1 3 DAC 1 4 DAC 1 5 DAC 1 6 DAC 1 7 DAC 1 8 14 1 CR3 CR1 CR2 Illustration 77 DAC 1 Output Circuit ...

Страница 86: ... CR1 3 CR2 3 CR1 4 CR2 4 CR1 5 CR2 5 CR1 6 CR2 6 CR1 7 CR2 7 CR1 8 CR2 8 An attempt to route a speaker to a connector channel that is in conflict with another connector will result in the following type of error messages Page 86 of 135 Table Of Contents Illustration 78 DAC 1 1 2 Output Conflict ...

Страница 87: ...0 1ms crossover hpf slope lpf slope See the Bass Management setup section of this manual room correction See the Room Correction setup section of this manual sub mode Sets the signal source for the selected sub Options are left right mono To exit the Channel Setup screen and return to the Setup Speaker screen push the CRx switch that is currently illuminated level offset Sets the level offset cali...

Страница 88: ... no signal is sent to the sub woofer sub mode Push the VOLUME encoder to adjust the sub output mode mono left right Press the SETUP switch to save and exit Setup Mode Note To bybass the Bass Management processing on all channels see the bass management bypass in Monitor Control setup 6 3 9 SOLO MUTE Setup The 8 SOLO MUTE switches can be paged across 3 pages for a total of 24 controls Each switch c...

Страница 89: ...he function and toggles the function on repeated presses The right area of the screen displays name of the currently selected speaker channel The corresponding channel speaker icon will have a white outline box around it Turn the VOLUME encoder to scroll through the speaker icons in the left side of the screen and click on any speaker icon to assign or de assign it to the currently selected solo m...

Страница 90: ...m Correction EQ screen displays up to 6 parametric equalizer bands depending on the speaker type Sub channels have 6 bands of EQ while all other speakers have 3 bands Each band contains the following parameters Hz The center frequency or shelf frequency of the selected filter Range is 10Hz 20kHz with 246 steps in approximately 1 24octave spacing dB The boost or cut level for peak high shelf and lo...

Страница 91: ...tup parameters that can be highlighted by turning the VOLUME encoder knob NOTE Headphone related monitor parameters are hidden if Headphone are disabled in the current workflow The available parameters are level control mode Sets the step size for the VOLUME control encoder Options are standard course fine In standard mode the VOLUME control adjusts the volume in 0 5dB steps with an accelleration ...

Страница 92: ...ower up level Sets the volume level that the speaker system will go to after power up lfe input lpf freq Enables and sets the LFE channel low pass filter cutoff frequency Options are bypass 80 120hZ lfe input gain Sets the LFE channel gain Options are 0db 10dB bass management Enables or disables bass management Options are bypassed enabled room equalization Enables or disables all room correction ...

Страница 93: ...active Headphones and speakers are on when speaker Volume Control is active mute headphones Headphones are muted when speaker Volume Control is active Headphones and speakers are on when headphone Volume Control is active phones cue downmix mode Selects the stereo output downmix template for Headphones and Cue outputs Options are 7 1 LtRt 7 1 LtRtPLII 7 1 LoRo 5 1 LtRt 5 1 LtRtPLII 5 1 LoRo LCRS L...

Страница 94: ...o match the perceived loudness from stereo to mono output Sets the output path for the MONO signal Options are to L R to C to L R sends the MONO signal to the Left and Right speaker equally to C Sends the MONO signal to the Center speaker only Left and Right speakers are muted mode Sets which monitor paths are affected by MONO Options are speakers headphones speakers only headphones only Press the...

Страница 95: ... L R to C to L R sends the L R signal to the Left and Right speaker equally to C Sends the L R signal to the Center speaker only Left and Right speakers are muted mode Sets which monitor paths are affected by the L R processor Options are speakers headphones speakers only headphones only Push the SETUP switch to save and exit Setup Mode 6 3 14 CUE setup Push the SETUP then push the MON CUE switch ...

Страница 96: ...s muted and 100 is unity gain cue X routing Clicking on this will enter the cue routing configuration screen This is where CUE paths can be assigned to hardware inputs and outputs The Cue Outs routing screen will display the current cue number selected for editing in the left side window The right window contains the list of cue configuration parameters source LSelects the left channel source conn...

Страница 97: ... is always the cue input regardless of the state of MON CUE left right When MON CUE is activated the cue source is switched to the left and right channels of the selected Control Room monitor source downmix When MON CUE is activated the cue source is switched to a stereo downmix of the selected Control Room monitor source NOTE To use the headphones for monitoring a Cue path when headphones are not...

Страница 98: ...or the following monitor paths speakers headphones speakers only headphones only Push the SETUP switch to save and exit Setup Mode 6 3 16 User A B C Switches Setup Push the SETUP switch then push the A B or C User switch to enter the Setup User switch screen Page 98 of 135 Table Of Contents Illustration 89 Setup Mute Screen Illustration 90 Setup ABC User Switch Screen ...

Страница 99: ... Right channel speakers Available for stereo output downmixes Options are off 6dB to 3db in 1 5dB steps surround to left right Set the mix level of the Surround channels to the Left and Right channel speakers Available for stereo output downmixes Options are off 6dB to 3db in 1 5dB steps 6 3 17 Downmix setup Downmixing is included in the A B C User Switches Setup 6 3 18 Meter Output setup Push the...

Страница 100: ...el in the left window Pushing the VOLUME encoder enters the Channel Select mode Turning the encoder scrolls through the available channels Pushing the VOLUME encoder selects the highlighted channel for routing See the Standard Channel Routing section of this manual for details on channel routing output Selects the meter output connector for the currently selected speaker Select disabled if the sel...

Страница 101: ...u mic gain Sets the RCU built in microphone gain Range is 0 30dB in 1dB steps ext mic gain Sets the gain of the ACU microphone preamplifier Range is 11 19 74dB in 1dB steps ext mic 48V Enables or disables 48V phantom power for the ACU talkback microphone amplifier talkback output Sets the signal source for the Talkback Output XLR connector Options are follow talkback ext mic rcu mic When set for f...

Страница 102: ...alkback send to the currently selected cue path EXIT Returns to the previous Setup Talkback screen ext switch mic assign Sets which talkback mic is activated by the ACU External Talkback Mic Switch Options are rcu mic only ext mic only rcu and ext mic ext switch cue assign Selects Cue paths to route the talkback signal to when the External Talkback switch is pushed Clicking on this option opens th...

Страница 103: ...mode they will be listed here Clicking on this option opens the Setup GPIO X Cue Assign screen This screen is identical to the Setup Talkback RCU Switch Cue Assign screen described above 6 3 20 SPL Meter setup Push the SETUP switch then push hold the MON CUE spl clear switch to enter the Setup SPL Meter screen This screen contains the following setup parameter that can be adjusted by pushing the V...

Страница 104: ...nternal 192 0kHz wordclock usb option io aes 1 aes 2 aes 3 aes 4 spdif optical 1 optical 2 dante digilink madi internal Sets the clock source to be the internal clock generator in the m908 wordclock Sets the clock source to the Word Clock input The system will synchronize to the incoming word clock All inputs to be monitored must be at the same sample rate and synchronous to the word clock usb Set...

Страница 105: ...d Clock Output Setup Push the SETUP switch then push hold the MUTE switch to enter the Setup System screen Turn the VOLUME encoder to scroll to and click on clock output Options are external system clock external the signal on the word clock output BNC connector will be a buffered copy of the signal on the word clock input BNC system clock the signal on the word clock output BNC connector will be ...

Страница 106: ...ogic level INPUT MON CUE Activates MON CUE function logic level OUTPUT TALKBACK RCU TALKBACK RCU tally OUTPUT TALKBACK EXT TALKBACK EXT tally OUTPUT User Switch A User Switch A tally OUTPUT User Switch B User Switch B tally OUTPUT User Switch C User Switch C tally OUTPUT Input 1 16 Monitoring Input 1 16 tally OUTPUT CR1 CR2 CR3 Control Room Speaker System CR1 CR2 or CR3 tally OUTPUT MUTE MUTE func...

Страница 107: ... m908 ACU top cover using a 2 Phillips screwdriver There are ESD sensitive components on the circuit boards inside the m908 Take care to insure that your work space is free of static electricity before removing the cover of the m908 ACU Page 107 of 135 Table Of Contents ...

Страница 108: ...per 3 3V 5 0V 1 AES3 1 J45 2 AES3 2 J46 3 AES3 3 J47 4 RCU DB15 J50 Page 108 of 135 Table Of Contents R339 MH7 5V IO 3V3 IO J50 C421 J45 C284 U54 U43 J46 C288 U44 PSUTX J41 GPIO C422 C285 C289 J47 C290 U45 C291 ACU REAR PANEL J47 GPIO 3 J46 GPIO 2 J45 GPIO 1 J50 GPIO 4 Illustration 96 GPIO Jumper Locations ...

Страница 109: ...aes1 4 spdif adat See Clock Source Setup above for details clock termination Sets the Word Clock input connector termination Options are 48k ohms 75 ohms If the m908 is being fed directly from a word clock source and it is the only receiver then set the termination to 75Ω If the m908 Word Clock input is being fed in a daisy chain with another terminated receiver then set the termination to 48kΩ Pa...

Страница 110: ...routing setup screen See Meter Output setup backlight Sets the LCD display back light intensity level Options are min med high max Adjust the back light to the lowest level that is acceptable bright for your work environment display dim Sets the amount of idle time before the display automatically dims Options are off 10 15 20 25 30 45 60 minutes NOTE For long display back light life it is highly ...

Страница 111: ... be edited for the desired subnet mask value ip address In DHCP mode displays the current IP address on the ACU Ethernet port In static ip address mode this parameter can be edited for the desired ip address mac address Displays the MAC address of the ACU Ethernet port rcu firmware version Displays the current RCU firmware version acu firmware version Displays the current ACU firmware version aux ...

Страница 112: ...sensitivity comes set from the factory at 24dBu 0dBFS Input sensitivity of 20dBu 0dBFS can be selected by moving jumpers on the ADC module PCB Page 112 of 135 Table Of Contents Illustration 100 ADC Input Conflict BALANCED 8 CHANNEL 8 CHANNEL ANALOG TO DIGITAL CONVERTER CHANNELS 3 8 CH 1 2 UNBALANCED 2 CHANNEL BALANCED 2 CHANNEL 14 1 SELECT RELAY Illustration 99 ADC Stereo Input Routing ...

Страница 113: ...H R2H U1H J1H R16H R10F C1F C10H R2F R6H L17 C4H C11H C6H R6F C7H C42 R14H R11H C39 U1F J1F R10D R16FC10F C1D R2D R14F R11F C4F C11F C7F C62 C6F R6D C4D R19 D2D C3D U2D C14D R12B R1D R13D R7D R9D R15D R3B C12B C8D D1B D2B C3B C14BR1B R5BR7B U2B R13BR15B R9B C8B J1D C9D R10B C10D R16D C1B R2B C11D C6D C7D R14D R11D R6B C13B U1B J1B C9B R16B C4B C11B C10B C6B C7B R11B R14B R7C U2C R9C R15C R3A C8C J...

Страница 114: ...t active In Pro Tools Hardware Setup the only control that is active for the emulated HD I Os is the Clock Source selection Valid options are Internal and Word Clock If choosing Word Clock select the option that is at the session sample rate The m908 does not support Loop Sync If the m908 is the only device connected to the HDX port then the Clock Source selection is only valid for the HD I O 1 HD...

Страница 115: ...ive port the m908 will appear as two HD I O interfaces and will allow monitoring 32 channels Page 115 of 135 Table Of Contents m908 INPUTS 1 32 OUTPUTS 1 32 m908 RCU AES3 1 I N OUT DC I N A140 M908 ETHERNET AES3 I N S PDI F OPTI CAL I N AUDI O WC I N WC OUT OPTI ON I O AES3 3 I N OUT AES3 2 I N OUT HOST TALKBACK SWI TCH ADC 2 m908 REFERENCE MONI TOR CONTROLLER PSU ONLY 1 2 A908 ANALOG I N 1 8 ADC ...

Страница 116: ...O WC I N WC OUT OPTI ON I O AES3 3 I N OUT AES3 2 I N OUT HOST TALKBACK SWI TCH ADC 2 m908 REFERENCE MONI TOR CONTROLLER PSU ONLY 1 2 A908 ANALOG I N 1 8 ADC A908 ANALOG I N 1 8 ADC 14 1 14 1 14 1 9 1 14 1 14 1 8 6 5 2 1 3 964530300294856 WORDCLOCK LOOPSYNC PRIMARYPORT EXPANSIONPORT IN OUT AC 100 240V 50 60H Z A S PDIF IN OUT AES EBU INPUT AES EBU OUTPUT OPTICAL IN OUT ACCESSORY 1 2 3 4 5 6 7 8 AN...

Страница 117: ...nternal jumper settings Moving magnet cartridges can be accommodated with the 40dB gain setting and 47k Ω input impedance Low output moving coil cartridges can be accommodated with the 60dB gain setting and 100 Ω input impedance The phono module also provides variable input loading from 0 500 Ω with VR1 and VR2 Connect an Ohm meter to the unbalanced input jacks to set the input loading to the cart...

Страница 118: ...OW GAIN 40dB 12Hz SUBSONIC FILTER HPF J5 J6 HPF ON HPF OFF J5 J6 R14 C6 J3 J4 Closed Hi Gain 18V 18V R9 R23 C22 U4 J5 C21 L G R U2 R16 R13C10 C13 R18 U3 R20 C12 C15 C7 U1 R11 R10 C8 C9 C11 C16 nEN R22 C18 GND R27 R26 R25 C19 C14 C17 R24 R28 R30 J6 R32 R31 C20 R29 D2 C23 MH2 Q4 C24 R33 R34 Q3 K2 Output R15 R17 R19 R21 AT171 R G Input L J3 J1 J2 Input Z VR1 D1 K1 MH1 R2 R1 Q2 R3 REV GND R4 R6 C2 J2 ...

Страница 119: ...t that you have any setup issues which aren t addressed by these resources feel free to contact us directly at 303 823 8100 Monday through Friday 9 5 MST 8 2 Windows USB ASIO Driver 8 2 1 Installing USB ADIO Driver The m908 USB ASIO driver is necessary for operating the m908 as an I O device on a Windows computer 1 Connect the m908 to you computer 2 Download the installer zip package from our webs...

Страница 120: ...will run and display the following dialog Click NEXT to start the installation 6 Choose the location you wish install the driver and click Install to proceed It is recommended to use the default installation folder Page 120 of 135 Table Of Contents ...

Страница 121: ...nnected to your computer there will be a blue and white G icon in the system tray or Grace Design USB Audio Control Panel in the start menu Simply click this icon to open the driver control panel There are three tabs in this panel The Status panel will be visible initially The Status panel shows the connected device and the currently defined OS sample rate Page 121 of 135 Table Of Contents ...

Страница 122: ...n errors or distortion The ASIO Buffer Size also affects latency the smaller the buffer the lower the latency This setting is interactive with the Streaming Mode The panel will display a warning if the buffer size is too small for the selected streaming mode and sample rate You will need to experiment with these options to find a suitable setting for your computer Page 122 of 135 Table Of Contents...

Страница 123: ...st is dependent on the maximum sample rate required 5 Info displays the Device and the Driver information 9 Firmware Upgrades The m908 is designed so that system firmware upgrades are simple The current m908 firmware is available on our website Page 123 of 135 Table Of Contents Illustration 109 USB Audio Control Panel Format Illustration 110 USB Audio Control Panel Info ...

Страница 124: ... Insert USB drive in to USB HOST connector on the back panel of the m908 5 Power on the m908 and wait for the prompt Once the system has booted it will identify the new firmware package and provide the following dialog box 6 In this message the current ACU firmware version is displayed along with the new firmware version Selecting NO will cancel the firmware update and the system will boot normall...

Страница 125: ...e system powers up until the RCU firmware version matches the version included with the installed ACU package Selecting YES will restart the RCU To enter the RCU firmware updater the SETUP button must be held until the LED boot sequence has completed Once this happens the m908 RCU bootloader will show up on the LCD At this point you can release the SETUP button The RCU firmware update will take 5 ...

Страница 126: ...lectrical Specifications See document m908 System Specifications which can be found at https gracedesign com support documents Grace Design reserves the right to update or change the electrical specifications at any time 11 Block Diagrams See m908 System Flow Diagram Page 126 of 135 Table Of Contents Illustration 114 ACU Firmware Update Complete ...

Страница 127: ...itive Positive Positive 20 Negative Negative Negative OUT 1 2 19 GND GND GND 18 Positive Positive Positive 6 Negative Negative Negative OUT 3 4 5 GND GND GND 4 Positive Positive Positive 17 Negative Negative Negative OUT 5 6 16 GND GND GND 15 Positive Positive Positive 3 Negative Negative Negative OUT 7 8 2 GND GND GND 1 Positive Positive Positive 14 Negative Negative Negative DB25 Analog Tascam P...

Страница 128: ...Negative Negative 5 19 GND GND GND 18 Positive Positive Positive 6 Negative Negative Negative 6 5 GND GND GND 4 Positive Positive Positive 17 Negative Negative Negative 7 16 GND GND GND 15 Positive Positive Positive 3 Negative Negative Negative 8 2 GND GND GND 1 Positive Positive Positive 14 Negative Negative Negative Note For unbalanced output operation leave the Negative pin open Page 128 of 135...

Страница 129: ...X 10 TX TX 11 6 5VDC OUT 6 5VDC IN 12 3 3VDC NC 13 TALKBACK IN TALKBACK OUT 14 GND GND 15 HEADPHONE RIGHT OUT HEADPHONE RIGHT IN Page 129 of 135 Table Of Contents 1 9 2 10 3 11 4 12 5 13 6 14 7 15 8 BLACK ORANGE CONNECTOR BACK SIDE VIEW CABLE IS NON DIRECTIONAL END 1 BLACK BLACK BLACK BROWN YELLOW RED 1 9 2 10 3 11 4 12 5 13 6 14 7 15 8 BLACK ORANGE BLACK BLACK BLACK BROWN YELLOW RED END 2 Illustr...

Страница 130: ...e Of Contents HOT GND TIP SLEEVE Normally open switch To m908 ACU Remote Talkback Jack Illustration 116 Remote Talkback Switch Wiring TALLY TALKBACK CONTROL GND 1 4 TRS PLUG TIP SLEEVE LED Normally open switch To m908 ACU Remote Talkback Jack RING Illustration 117 Remote Talkback Switch with LED Tally 1 2 3 SHIELD HOT GROUND Talkback Balanced Output XLR Illustration 118 Talkback Out Unbalanced Wir...

Страница 131: ... you mail the completed warranty registration card enclosed with all of our products within 10 days of the original date of purchase You may also register your product directly with Grace Design by telephone 303 823 8100 Monday Friday 9 00am to 5 00pm MST or you can register your product online at www gracedesign com This warranty is in lieu of all other warranties whether written expressed or imp...

Страница 132: ... Setup Screen 54 Illustration 36 Select Workflow to Edit Screen 55 Illustration 37 Editing Workflow Screen 56 Illustration 38 Workflow Channel Setup Screen 58 Illustration 39 Editing Workflow Rename Conflict 59 Illustration 40 Save System Workflow Changes Dialog 60 Illustration 41 Save Active System Workflow Changes Dialog 60 Illustration 42 System Configuration Updating 61 Illustration 43 Cancel ...

Страница 133: ...Screen 98 Illustration 91 Meter Output Setup Screen 100 Replace Existing Route dialog 101 Illustration 92 Setup Talkback Screen 101 Illustration 93 Setup Talkback Switch Assign Screen 102 Illustration 94 Setup SPL Meter Screen 103 Illustration 95 Setup System Screen 104 Illustration 96 GPIO Jumper Locations 108 Illustration 97 GPIO Schematic Diagram 109 Illustration 98 Setup System Screen 109 Illu...

Страница 134: ...ser ABC Switch Setup to show downmix options Update Setup CR Outputs to explain Headphone CUE CR EXT routing conflicts Change Cue Unity Gain setting 10 26 2019 MBG E Update max power consumption specs Update CR1 CR2 CR3 Setup routing conflicts on CUE CR EXT with Headphones enabled Update Clock Status table to include PLL Lock status Updated Level Indicator thresholds 11 13 2019 MBG F Add Direct In...

Страница 135: ...m908 User Manual Rev G Page 135 of 135 Table Of Contents ...

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