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Universal Slave Driver User's Guide

1. 7 Connecting USD to Pro Tools 10 Connecting AC Power lt ccs a ete ee ee a ee A ee ed 10 Connecting Machines Decks and Other Devices 11 Software Installation sis sedna ana a a a eee 13 Getting Stated s a A A a a ee We ee a 13 Updating USD Firmware a eee eee eee 14 Configuring OMS arcus 5 53658 wat ie ae RE hs ek COAT he ee Sh ee ewe EA a 15 Troubleshooting s cia a hee nea eta eb Shee 16 Chapter 3 USD Hardware and Software Overview 17 USD FrontiPanel AA ee ee ee AA 17 USD Rea Panel 2 a A Sede AA Aa EEA 20 USD Setup Software 22 Contents iii Chapter 4 Using the USD 27 Control OPtlONS Lui er A o ae ha A dd a eA da a ke 27 USD Controls in Pro Tools USD Setup and Front Panel 28 SYNC A A da te ne eaten e Jee Hd ao te 31 Clock References cni ro his eS De ee A ee ar ee 32 PositionalReferences 38 Generating and Regenerating Time Code 44 Generating a Window Burn 51 Chapter 5 Additional Operational Information 55 Front Panel Generator Parameter Controls
2. Connecting AC Power The USD AC connector accepts an IEC Standard AC Power Cable The USD is auto power selecting 100V to 240V and will automatically work with a standard modu lar cable to connect to AC power recepta cles in any country To connect AC power to the USD a Plug one end of a power cable into the USD AC connector and plug the other end into a wall outlet or other power source Connecting Machines Decks and Other Devices The following sections describe connec tions required for different applications Connecting a Video Source For the USD to resolve to house sync Connect the house sync black burst sig nal to the USD Video Ref In port This is a non terminated loop through connection If the Video Ref Thru connec tor is not used then you must terminate it using the supplied 75 ohm precision termi nator resistor For the USD to resolve directly to an incoming video signal Connect the video signal to the USD Video In port This port is self terminated inside the USD chassis Character Generator for Window Burn The USD can also generate a Window burn while using the same video source signal as the video reference The following is one example setup for a window burn To use the USD Time Code Character Generator to make a window burn 1 Connect your video signal to the USD Video Ref In port 2 Use another BNC cable to connect the USD Video Ref Thru
3. 55 Managing and Selecting Video Inputs 61 Using Fader St tt cv si arica a Ad ta Am ala A ja 63 Calibrating the USD Oscillator s sars c araea iie a a aneta a ae eC a are al Ete p a ka aaa ene 64 Restoring Factory Settings 0 aeae a a aE eee eee eee 65 Appendix A Additional Synchronization Information 67 Appendix B Technical Specs 73 Appendix C Wiring Diagrams Pin Assignments 81 O A EE AA eran ttt eet ahs eee 89 iv Universal Slave Driver Introduction The Universal Slave Driver USD is a mul tipurpose synchronization device It sup ports all major time code and clock refer ence standards used in audio video film and multimedia production USD with Pro Tools With Pro Tools MIX MIXplus and Pro Tools 24 systems the USD provides near sample accurate lock to time code through the DigiSerial Port connection Standalone Mode The USD can also be used as a standalone synchronization converter time code gen erator clock generator and time code char acter generator Throughout this guide the term standalone refers to systems utiliz ing USD but not using Pro Tools USD Setup USD Setup is a remote control application for the USD USD Setup can be used with or without Pro Tools on any supported Mac intosh or Windows comp
4. User Tips are helpful hints for getting the most from your system Important Notices include information that could affect your data or the performance of your system Cross References point to related sections in other Digidesign guides USD Synchronization Support Supported Positional Reference Sources e LTC e VITC e Bi Phase Tach e Internal Time Code Generator e Serial Time Code requires Digidesign s MachineControl option and Pro Tools software version 5 0 or higher and a video reference signal Supported Clock Reference Sources e Reference Video e Composite Video Input e Word Clock e AES EBU Null e Pilot Tone e Super Clock e Internal Crystal e Bi phase Tach e LTC Output and Generation e Digidesign Super Clock 256x sample clock e Word Clock 1x sample clock e AES EBU null clock AES digital black e VITC if a video input is present e LTC e MIDI Time Code MTC Other Features Front panel controls and a large LED dis play of time code and parameters Integrated control of USD from Pro Tools Time Code Character Generator Fader start provided through GPI out put for remote transport control from select Pro Tools fader movement USD Setup software for Macintosh and Windows USD firmware that can be updated at any time for future upgrades Chapter 1 Introduction 5 6 Universal Slave Driver Installing the USD For USD with Pro Tools installation in
5. To resolve the USD to Linear Time Code Using Pro Tools a Choose Display gt Session Setup and se lect LTC from the Clock Reference menu Using the front panel controls a Using the Clock Reference switch select LTC as the clock reference Using USD Setup m Select Linear Time Code LTC from the USD Setup Clock Ref pop up menu Additional LTC Information LTC can be recorded or striped to an ana log audio tape track to provide the source of both positional and clock reference when routed back through the USD after striping LTC can also be recorded onto and played back from a VTR audio address or cue track If you are working with house sync in your facility and want to use LTC for positional reference only see Positional Reference Options on page 39 gt For further information on LTC signals see LTC Signals on page 67 Pilot Tone The USD can resolve to an external Pilot Tone signal for clock reference for syn chronizing to or transferring audio from certain types of open reel audio tape re corders Pilot Tone is basically a 60 Hz NTSC or 50 Hz PAL sine wave tone Pilot Tone is used on location film shoots to es tablish a common sync reference between a film or video camera with a portable 1 4 analog ATR Pilot Tone contains no posi tional information it provides only clock reference USD decides whether to use 60 Hz or 50 Hz as the pilot tone reference frequency
6. 6 Install USD Setup see Software Installa tion on page 13 Chapter 2 Installing the USD 9 Standalone Mode In standalone mode when USD is not con nected to Pro Tools no computer or serial connection is required except for USD Setup and firmware updating The USD Setup software included can be used to control the USD and to update its firm ware through a serial connection to a com patible Macintosh or Windows computer as explained in USD Setup on page 9 Connecting USD to Pro Tools The USD must be connected to Pro Tools as the clock master To connect the USD to a compatible Digidesign audio interface 1 Connect the Super Clock Out of the USD to the Super Clock In or Slave Clock In of your master Digidesign audio interface to DigiSerial Port Super Clock Out ESO 910 8 jo 6666 SuperClock Slave Clock connection from the USD to a single Pro Tools audio interface 10 Universal Slave Driver 2 Ifusing more than one interface connect the Slave Clock output of your primary in terface to the Slave Clock input of the sec ond interface and so on for each additional Interface but do not loop Slave Clock from the last interface back to USD to DigiSerial Port Super Clock Out Super Clock Slave Clock chain connection from the USD to multiple 888 24 1 0 Audio Interfaces
7. E a yso 467223225 Enabled Cents The Variable Speed Override section 2 Use the sliders to adjust the varispeed values in semitone or cent increments The actual output word clock frequency is shown near the sliders 0r 3 Enter the value in semitones and cents using the editable fields If the varispeed value results in an output freguency sam ple rate that is below 35 kHz or above 50 kHz the frequency display turns red and the actual output frequency is limited to this value 4 When finished click the Set button to enable the changes Using Pitch Memory Pitch Memory when enabled holds the output sample rate steady even when the Clock Reference has disappeared or gone out of lock range If not enabled the out put sample rate will return to the nominal rate for example exactly 44 1 kHz when the Clock Reference disappears or goes out of lock range With Pitch Memory enabled Pro Tools continues to play and record at the re solved sample rate even if the Clock Refer ence source disappears You might want to disable Pitch Memory while performing Chapter 4 Using the USD 37 analog recordings so as to have the record ing made at the true nominal sample rate for example exactly 44 1 kHz If Pitch Memory is disabled and the se lected external clock reference is not avail able then the USD will revert to the nomi nal selected internal sample rate setting To configure Pitch Mem
8. Many professional digital audio products including open reel multitrack tape record ers digital mixing consoles and the Tas cam DA 88 modular digital multitrack have Word Clock 1x sample rate connec tors Word Clock allows the DA 88 and other Word Clock compatible devices to send or receive external clock information which controls the sample rate which in turn where applicable controls the play and record speed Using just Word Clock it is possible to cre ate a chain of digital devices in your stu dio by picking one source as the Word Clock master and configuring other sources as Word Clock slaves AES EBU Some professional digital audio products use AES EBU null clock which is an AES EBU data stream that contains only clock information only and no audio infor mation as a system clock reference source These systems rely upon a single AES EBU master clock source that is distributed throughout a digital audio facility in much the same way that house sync is distributed throughout a video facility If you are con necting the USD to such a system you will want to use the USD AES EBU input as the clock reference connection so that all sys tem components are referenced to the same time base In some cases such as using the USD as a standalone clock resolver or time code gen erator without a digital audio workstation you may wish to use an audio DAT ma chine or other similar device
9. cludes the following steps e Connect the USD to your Pro Tools sys tem e Connect your studio e Install and configure USD software Complete installation instructions are pro vided for each of these steps throughout this chapter For standalone USD systems installation instructions begin with Connecting AC Power on page 10 Make sure Pro Tools is already installed and operating correctly before installing the USD Connecting USD to a Computer Pro Tools systems require a USD to com puter connection as explained beginning in Connecting USD to a Computer on page 7 For standalone USD systems without Pro Tools firmware updating and USD Setup require a connection to a Mac intosh serial port or Windows COM port Firmware updating is explained in Updat ing USD Firmware on page 14 In addition USD Setup can be used for soft ware remote control of all USD features USD Setup requirements are listed in Soft ware Installation on page 13 About the USD Serial Cable The USD includes a 4 meter approximately 12 foot cable designed to connect the USD to a DigiSerial Port on a Macintosh or Windows Pro Tools MIX MIXplus or Pro Tools 24 system or to a Macintosh se rial port modem or printer For Windows NT systems a standard 9 pin to 25 pin modem cable is required to con nect the USD to a Windows COM port in order to use USD Setup Contact your Digidesign dealer if you need to ac
10. Examples of Auto Switch LTC VITC The USD will switch to LTC for posi tional reference during hi speed searching and cueing for example or whenever the tape speed is too high to read VITC The USD will switch to VITC if LTC stops or is unavailable This will include for ex ample if a tape is paused or parked If both LTC and VITC are available the USD chooses which one to use based on the speed of playback The switch over point is approximately 75 of full 1x play back speed Above 75 playback speed LTC is favored below 75 speed VITC is favored If a dropout occurs the USD waits until the freewheel duration has expired before at tempting to switch over to the opposite source If neither source is available the USD will stop reading time code Digital Clock Signal Types A reference clock signal is part of any digi tal recording system It is required because whenever digital audio information is mixed together or passed between devices the playback samples must be aligned with the recording samples In some cases such as with AES EBU or S PDIF digital inter faces the clock signal is embedded in the data stream itself In other cases such as SDIF the clock signal is carried as an en tirely separate signal from the digital audio sample data The USD is able to resolve to three different types of digital audio clock information AES EBU Word Clock and Super Clock 256x Slave Clock Word Clock
11. s passing through the USD If you need to change the appearance of the window dub in terms of size vertical position horizontal position and color you ll need to use Pro Tools or USD Setup These parameters cannot be adjusted from the USD s front panel controls Window Burn Display Options If you need to change the appearance of the window dub in terms of size vertical position horizontal position and color you ll need to use Pro Tools or USD Setup These parameters cannot be adjusted from the USD s front panel controls Size Sets the relative size of the window dub The choices are Small or Large The default setting is Large Vertical Position Sets the vertical position of the window dub relative to the bottom of the video picture The choices range from 10 From Bottom to 50 From Bot tom in 10 increments The default set ting is 20 From Bottom A 10 from Bottom vertical position is out side the standard safe title area which means it may not be visible on some video monitors Horizontal Position Sets the window dub s relative horizontal position within the video picture The choices include Extreme Left Left Center Right and Extreme Right The default setting is Center A The Extreme horizontal positions are out side the standard safe title area which means they may not be visible on some video monitors Color Sets the color of the time code num bers in t
12. 11 format USD Setup 24 managing inputs 61 NTSC and PAL front panel 60 odd even field display of 23 Video In back panel connector 21 connecting to 11 Video Out 21 Video Ref In connecting 11 specifying over Video In 32 Video Ref Thru and terminator for 20 back panel connector 20 connecting 11 VITC as positional reference 48 connector for positional reference 21 default line pair 48 Generate Lines USD Setup 24 Generate Lines front panel details 57 Insertion Enabled USD Setup 24 Insertion front panel details 56 monotonic 50 positional reference 40 Read Lines USD Setup 24 Read Lines defaults 24 Read Lines front panel details 57 choosing as clock reference 33 connecting 11 In connector 22 Out connector 22 92 Universal Slave Driver
13. Spot requires VITC The USD s character generator obtains its time code address from the chosen Posi tional Reference Window Dub Requirements Existing Video Signal The USD can only burn a window dub onto an existing video signal This means that at least one video source signal from a VTR nonlinear ed iting system or other video device must be present at one of the USD s video input connectors Video In or Video Ref In When generating a window dub the two VITC Timing and VITC Video Source Rules apply USD Output The signal from the USD s Video Out connector must be routed to a video destination such as another VTR or nonlinear editing system 52 Universal Slave Driver To burn a window dub onto a video signal from Pro Tools 1 Choose Setups gt Peripherals and display the Synchronization page 2 Assuming USD is enabled already the Window Dub controls should be available gt Peripherals Machine Control MIDI Controllers ProControl J Synchronization Device Port Send SSD Configs To Universal Slave Driver DigiSerial Port L None Minimum Syne Delay Frames Oo Enable Control Of Pro Tools Via MMC ID Ji USD Setup Menable USD Setup Menable Dub Window Current Firmware Version 3 1 2 size Large Vertical Position 20 From Bottom Horizontal Position center Lx Configuring USD Window Dub from Pro Tools 3 Click Enable Dub Window 4 Configur
14. Switches Set The SET switch has three primary func tions When time code is displayed Pressing Set once changes the Display from time code to parameter names When a parameter name is visible Pressing Set once will change the Display to show parameter values When a parameter value is visible Pressing Set once will set that parameter value and will return the Display to time code Down and Up These switches scroll through parameter names and values whichever is currently displayed Chapter 4 Using the USD 29 When a parameter name is visible Pushing the Down and Up switches scrolls through the parameter names for example from SET GEn to VIdEo SY When a parameter value is visible These switches scroll through the available pa rameter values When entering time code values Pressing these two switches simultaneously tabs through the hours minutes seconds frames fields Run Stop Clear This switch has two functions depending upon the current mode While generating time code Pressing RUN STOP starts or stops the time code generator when USD is in Generator Preset mode While time code is being displayed Clear re sets the counter whenever time code is vis ible in the LED Time Code display Otherwise the RUN STOP CLEAR switch serves as a Cancel button Clear mode Edit Mode To enter Parameter Value Edit mode m Push Set when time code numbers are visible in the LED Time Code Display On
15. USD s window dub from the front panel 1 Select Burn Enabled burn EnA using the Set Down and Up switch 2 Press the Set switch again 3 Use the Down and Up switches to toggle between on off 4 When you have chosen your desired op tion press Set The LED display will return to showing time code numbers The USD will retain the setting even when the unit is powered off and on again until it is changed See Generating a Window Burn on page 51 for Pro Tools and USD Setup window dub instructions Default Window Dub Settings The USD time code character generator de faults to the following display settings Parameter Default Size Large Vertical Position 20 from bottom Horizontal Position Center White numerals on a black background Color 58 Universal Slave Driver Freewheel Length Duration Freewheel Length sets the period of time for which the USD will continue to regen erate time code when incoming time code is interrupted FF EE See Freewheel Duration on page 39 for an explanation of this feature The follow ing describes the choices list in the front panel E EN To set the freewheel duration 1 Select Freewheel Length FrEE LEn us ing the Set Down and Up switches 2 Press the Set switch again The LED Time Code Display will switch to display one of the parameter values 4 Fr 8 Fr 12 Fr 16 Fr 20 Fr 24 Fr 28 Fr 32 Fr 36 Fr 4
16. a time code setting and advance to the next field press and release the Down and Up switches simultaneously 5 Repeat until you have finished setting the USD to the desired generator start time 6 When you are done press the Set switch again The LED Time Code Display will stop flashing and will show the start time you have just set To set Bi Phase Tach start frame using USD Setup 1 In the Generator Bi Phase Preset section type in the time code value of the starting frame in hours minutes seconds frames Generator Biphase Preset _ Hrs Min Sec Frm Setting the Generator Bi Phase Preset 2 When you have entered the proper start ing frame click Set Bi Phase Tach Signal To define the direction for a Bi Phase Tach input signal using the front panel 1 Using the Set Down and Up switches select Bi Phase Tach Input Signal bIPH 516 2 Press the Set switch The LED Time Code Display will switch to display one of the four parameter values A LEAd b Bi Phase FWD A leads B Here when the A square wave is ahead of the B square wave the direction of the Bi Phase signal is understood to be Forward b LEAd A Bi Phase FWD B leads A Here when the B square wave is ahead of the A square wave the direction of the Bi Phase signal is understood to be Forward r n d LO Tach FWD Bis Low Here when the B signal is in a low state the rate and direction r n d of the Ta
17. analog tape machine to record time code on Track 24 at a reference level of 10 dBu or lower with Track 23 left blank as a guard track This practice avoids crosstalk bleed that can occur between the time code track and oth erwise adjacent audio tracks Time code which is a mid frequency alternating pitch square wave is very sensitive to crosstalk from adjacent tracks and con versely you don t want audible time code leaking onto your audio tracks If your ATR is under the control of a syn chronizer you must make sure that the synchronizer and USD are both locked to the same reference source such as typi cally from a video black burst generator 68 Universal Slave Driver Auto Switch LTC VITC Auto Switch LTC VITC lets USD automati cally select between these two time code sources LTC and VITC both provide useful and unique capabilities For instance it is im possible to read LTC off a paused video tape Consequently using only LTC there s no way you can use Pro Tools to perform Auto Spotting of regions when the tape is paused However VITC continues to be read as long as the picture remains visi ble so it can be used as a positional refer ence when the VTR is paused On the other hand VITC cannot be read at fast winding speeds except by broadcast quality VTRs LTC can be read at fast winding speeds as long as its signal remains within the high end frequency response of the ATR or VTR
18. and which are 90 out of phase with one an other As a Bi Phase generating device plays it outputs a steady stream of square waves that the USD can use as its clock ref erence at nearly any speed including still paused 36 Universal Slave Driver The USD uses the phase relationship be tween the two square waves to determine the device s direction forward or reverse However this is relevant only when the USD is using the Bi Phase signal as a posi tional reference Tach A Tach signal is a variation of Bi Phase With Tach s two signals one is used only as the direction indicator while the other is used as the velocity or rate indica tor The USD uses this rate signal when re solving to Tach as a clock reference There are several different standards for the number of pulses per frame for Bi Phase or Tach devices Using USD Setup s Pulse Per Frame setting you can set the USD to oper ate from 2 to 254 pulses per frame to match the PPF rate of the external device s Bi Phase Tach encoder r For additional Bi Phase Tach signal informa tion see Bi Phase Tach on page 70 in Ap pendix A Internal Clock Generating and Regenerating The USD can use its own crystal refer enced internal clock as a master clock source When USD Clock Reference is set to Internal e Word clock Super clock and AES EBU digital clock outputs are simultaneously driven from the internal crystal refer ence and
19. ational The Remote Only LED will be lit To exit Remote Only mode from the front panel a Simultaneously press and hold down the Clock Reference Positional Reference and Frame Rate front panel switches This will disengage the USD from Remote Only mode This is useful when the host computer is not easily accessible to over ride Remote Only Mode Pro Tools USD controls always provide ac cess to most USD parameters Using the Front Panel Generator Parameter Switches The Generator Parameter Controls are la belled SET DOWN UP and RUN STOP CLEAR In addition to their pri mary generator functions these switches provide front panel access to most USD pa rameters Features Not Accessible from the USD s Front Panel Controls The front panel provides access to all USD features except the following which can be controlled using Pro Tools or USD Setup e Remote Only Mode Front Panel Lockout e Firmware update Changing Window Burn Size Vertical Position Horizontal Position and Color GPI General Purpose Interface func tions e Choosing between Video In or Video Ref In connector for the Clock Reference source Variable Speed Offset VSO For a listing of available parameters refer to USD Controls in Pro Tools USD Setup and the Front Panel on page 28 O 44 1 kHz Swe AAA AA AB O PULL DOWN I ole SET DOWN UP RUN STOP CLEAR Generator Parameter
20. decimal point indicates odd numbered When the USD is in Auto Switch LTC VITC mode the decimal point to the right of minutes illuminates Parameters and Values When configuring the USD with the Set Run Stop and other parameter controls the LED display shows parameter names values and other data gt For a table identifying each LED abbrevia tion and function see Parameters on page 55 7 Positional Reference Switch Selects the USD positional reference Choices include LTC VITC Auto Switch LTC VITC BI PHASE GENERATE 8 Positional Reference LEDs Yellow LEDs display the active positional reference In Auto Switch LTC VITC mode both the LTC and VITC LEDs light while the USD determines which source it will use Either the LTC or the VITC LED will remain lit to indicate the chosen positional reference 9 Frame Rate Switch Selects the time code frame rate and format drop frame or non drop frame The active choice is displayed by the Frame Rate LEDs 10 Frame Rate LEDs Display the current USD frame rate Frame Rates 30 29 97 25 or 24 fps are in dicated by four green LEDs Drop Non drop Format is indicated by a single orange LED labelled DF a lit DF LED indicates drop frame unlit indicated non drop frame 11 Status LEDs Show the current state of the USD in rela tion to clock references Indicators include Locked This red LED lights solid when the USD is locked to the
21. drop frame non drop frame 3 pin XLR female per IEC 268 12 Speed Range 1 30 to 80X play speed forward or backward Level 24 dBu to 9 dBu differential pin 2 hot Impedance 200K ohms LTC Out Format SMPTE EBU 80 bit longitudinal drop frame non drop frame Connector 3 pin XLR male per IEC 268 12 Speed Range 10 of play speed Level 24 dBu thru 9 dBu RMS differential pin 2 hot Level Default Output Impedance O dBu RMS 1 52V p p 10mV 5K ohms Load Impedance min 600 ohms Rise Fall Time 42us 1us measured between 10 and 90 p p S N Ratio 60 dB RMS at O dBu level Video Main In Level NTSC or PAL composite video 1V pp Termination 75 ohms 76 Universal Slave Driver Rear Panel Connectors Video Main Out Level 1V p p Source Impedance 75 ohms Video Ref In Format NTSC or PAL composite video Level 1V p p Termination 100K ohms Video Ref Out Level 1V p p Termination 100K ohms Description Passive loop thru of Video Ref in AES Clock In Level 5 V pp at 110 ohms pin 2 hot Connector 3 pin XLR female per IEC 268 12 AES Clock Out Level 5 V p p at 110 ohms pin 2 hot Connector 3 pin XLR male per IEC 268 12 Word Clock In Level O to 5 V low 2 0 to 6 0 V high Connector BNC Female Word Clock Ou
22. from Pro Tools m Select Bi Phase from the Positional Refer ence menu located in the Session Setup window To use Bi Phase Tach for positional reference from the front panel a Using the front panel Positional Refer ence switch select Bi Phase Tach To use Bi Phase Tach for positional refer ence from USD Setup 1 Select Bi Phase Tach under USD Setup s Positional Ref pop up menu 2 Set the starting frame as described in Bi Phase Tach Starting Frame on page 42 3 Set other Input Signals options as appro priate Biphase Tach Parameters Wariable Sp Tach Fwd B is High Selecting Bi Phase Tach input signals Bi Phase Tach Starting Frame In order to use the Bi Phase Tach signal as a positional reference the USD also needs to know the time code address for a particular frame of film This positional relationship is established by parking the film device at a particular frame and setting the USD to the equivalent time code value using the Bi Phase Tach Starting Frame parameter A Bi Phase start frame can not be set from within Pro Tools To set the starting frame for Bi Phase Tach from the front panel 1 Select Set Gen SE7 6En using the Set Down and Up switches 2 Press the Set switch again to display time code numbers one of the time code fields hours minutes seconds frames will be flashing 3 Press the Down or Up switch to scroll through the current parameter 4 To set
23. input it will be ignored and not passed through to the AES EBU digital output connector Connector Female XLR style 3 pin Pin 2 or hot Pin 3 or cold Chapter 3 USD Hardware and Software Overview 21 12 AES EBU Out Outputs a silent all bits OFF AES EBU au dio signal whose sample rate exactly matches the USD Word Clock BNC output Connector Male XLR style 3 pin Pin 2 or hot Pin 3 or cold 13 Word Clock In Receives 1x sample rate Word Clock for clock reference purposes only Often used with external digital consoles and digital tape machines Connector Female BNC 14 Word Clock Out Outputs 1x sample rate Word Clock infor mation for clock reference purposes only Can be generated internally Connector Female BNC 15 9 pin In Acc This port is not active 16 9 pin Out 9 pin Pass through This port is not active 17 Super Clock In Receives Super Clock 256x sample rate in formation Used for 256x clock reference purposes only also known as Slave Clock Connector Female BNC 22 Universal Slave Driver 18 Super Clock Out Outputs Super Clock 256x sample rate in formation for Digidesign Audio Interfaces for clock reference purposes only Can be generated internally or can be converted from an external clock reference Also known as Slave Clock Connector Female BNC 19 AC Power In Receives AC mains powe
24. kHz 48 kHz 44 1 kHz and 44 144kHz PULL UP 44 1 kHz and 44 056kHz PULL DOWN 48 kHz and 48 048 kHZ PULL UP 48 kHz and 47 952 kHz PULL DOWN PAL format and Pull Up Down The USD Pull Up and Pull Down features are not designed to perform conversion be tween 24 fps and 25 fps VITC Insertion When selected VITC will be inserted onto the outgoing video signal assuming that a video signal is present at one of the USD video inputs and that the USD is in a valid mode for inserting VITC MAW 1_E bi iL ing To configure the USD to insert VITC using the front panel 1 Select VITC Insertion VI7C InS using the Set Down and Up switches 2 Press the Set switch again The LED Time Code Display will switch to display On or Off 3 Use the Down and Up switches to switch between the parameter values 4 When you have chosen your desired op tion press Set You may also need to select the line pairs that you will generate VITC on using the VITC Generate Lines parameter 6En LInE VITC Read Lines This setting determines which line pair of incoming video is used for the VITC source ff 4 J d rdr Line To choose the VITC read lines 1 Select VITC Read Lines rdr LInE using the Set Down and Up switches 2 Press the Set switch again The LED Time Code Display will switch to display one of the parameter values e Auto ALL LInE where the USD will search all lines and select the first valid
25. line pair automatically Or e one of the following 10 12 11 13 12 14 13 15 14 16 15 17 16 18 17 19 18 20 19 21 20 22 3 Use the Down and Up switches to scroll through the parameter values 4 When you have chosen your desired op tion press Set VITC Generate Lines This setting determines the line pair of the video signal at the Video Out connector onto which the USD inserts VITC Nor mally this should be left at the default set ting of 14 16 EE 4 y y E BER LIM To choose the VITC generate lines 1 Select VITC Generate Lines 6En LInE using the Set Down and Up switches 2 Press the Set switch again The LED Time Code Display will switch to display one of the parameter values 10 12 11 13 12 14 13 15 14 16 SMPTE recommended setting 15 17 16 18 17 19 18 20 19 21 20 22 3 Use the Down and Up switches to scroll through the parameter values 4 When you have chosen your desired op tion press Set The LED Time Code Display will return to showing time code numbers The USD will retain the setting even when the unit is powered off and on again until itis changed Chapter 5 Additional Operational Information 57 Window Dub Burn By enabling this setting you can superim pose a window dub onto an incoming video signal if D i g LILII VE L JIJI The front panel lets you enable window dub but not adjust any window options To enable or disable the
26. port to the Video In port 3 Connect the USD Video Out port to other video devices Connecting LTC The USD provides LTC input and output connectors To Input LTC to the USD Connect the LTC signal from your ma chine synchronizer or other source to the USD LTC In port To output LTC from the USD Connect the USD LTC Out to your exter nal device s Connecting Word Clock Devices The USD has Word Clock input and output and both can be used simultaneously To input Word Clock to the USD a Connect the Word Clock signal from your DAT machine or other device to the USD Word Clock In Word Clock device 1 0 0000 Word Clock out Word Clock in E 0 RAA 28 8 00000836 Word Clock out Y Word Clock in e 0000 Word Clock device 2 Connecting the USD to Word Clock devices To supply Word Clock from the USD Connect the USD Word Clock Out to the device Word Clock input Chapter 2 Installing the USD 11 Keep in mind that Word Clock contains no positional information if you want devices to play or record in sync you ll still need to provide them with a positional reference The USD can generate time code to provide positional reference to other devices See Generating and Regenerating Time Code on page 44 for more information Connecting AES EBU Devices To use AES EBU clock reference Connect
27. with the Clock Reference Switch Chapter 3 USD Hardware and Software Overview 17 4 Sample Rate LEDs Green LEDs show the current USD sample rate The table below shows how the four Sam ple Rate LEDs indicate the current USD sample rate USD LED Displays and Sample Rates USD LEDs ON Sample Rate 44 1 kHz 44 100 kHz 48 kHz 48 kHz 44 1 kHz and 44 144kHz PULL UP 44 1 kHz and 44 056kHz PULL DOWN 48 kHz and 48 048 kHZ PULL UP 48 kHz and 47 952 kHz PULL DOWN PAL format and PULL UP DOWN The USD Pull Up and Pull Down features are not designed to perform conversions between 24 fps and 25 fps 5 Set Down Up Run Stop Clear Generator Parameter Controls These four momentary switches provide di rect access to many USD functions includ ing time code generator settings PAL NTSC selection sample rate and more The LED display shows the current mode or currently selected parameter or setting 18 Universal Slave Driver 6 LED Time Code Display This 7 segment multifunction LED is the USD time code and parameter display Time Code The current positional refer ence internal or external is displayed in hours minutes seconds frames Decimal points indicate additional time code infor mation Odd even field distinction is indicated using a decimal point to the right of the frames display A lit decimal point to the right of frames indicates an even num bered field no
28. within an AES EBU or S PDIF data stream However devices that support Word Clock have separate dedicated BNC style Word Clock connectors that carry no audio information of their own A wide va riety of professional audio devices have Word Clock connectors including digital mixing consoles DASH standard digital multitrack tape recorders and MDMs mod ular digital multitrack recorders When transferring digital audio to Pro Tools from a device that doesn t sup port Super Clock 256x make sure to re solve the USD to Word Clock Super Clock 256x Super Clock or Slave Clock is Digidesign s proprietary hi speed clock that runs at 256x the sample rate All Digidesign audio interfaces are equipped with Super Clock inputs and outputs be cause its 256x rate makes it less susceptible to jitter than Word Clock 1x In most situations the USD should supply the master Super Clock signal to Digidesign audio interfaces You should resolve the USD to Super Clock any time you are trans ferring digital audio from one Digidesign workstation to another For additional digital clock signal informa tion see Digital Clock Signal Types on page 69 34 Universal Slave Driver LTC and Clock Reference LTC can provide both positional and clock information as part of the time code signal LTC cannot be read when the reference deck is stopped or playing back at slow speeds or at fast wind speeds roughly 10x playback speed
29. 0 Fr 3 Use the Down and Up switches to switch between the parameter values 4 When you have chosen your desired op tion press Set LTC Output Level Gain Adjusts the audio level of the USD s LTC output from 24 dBu to 9 dBu y 7 4 Y J y YA h d Ana 4 g Y i Ay 7 Y y it See Example 1 Using Set Down and Up to adjust LTC Gain on page 30 for step by step LTC gain instructions To set the LTC output level 1 Select LTC Gain L7C 6AIn using the Set Down and Up switches 2 Press the Set switch again The LED Time Code Display will switch to display one of the parameter values shown in USD LED as dbu referring to actual dBu levels 9 dbu 6 dbu 3 dbu 0 dbu 3 dbu 6 dbu 9 dbu 12 dbu 15 dbu 18 dbu 21 dbu 24 dbu 3 Use the Down and Up switches to switch between the parameter values 4 When you have chosen your desired op tion press Set The LED Time Code Display will return to showing time code numbers The USD will retain the setting even when the unit is powered off and on again until changed Pitch Memory Hold Pitch Memory is useful when resolving USD to off speed free running LTC When Pitch Memory is enabled the USD will re main at a pitch sample rate that corre sponds to the last known clock reference speed Without Pitch Memory Hold USD reverts to the selected sample rate 7 7 j 4 BIFY ped NA y LJ Ji L DU Turn off Pitc
30. 00 00 click Zero 7 Click Set Typically at this point you would arm the destination VTR to record video so that VITC can be inserted into the video signal and be recorded on the desti nation videotape Make sure that your cho sen clock reference is actually present and running and that it is synchronized with the incoming video signal 8 Click Run to start The time code ad dresses will begin to increment 9 Click Stop when you want to pause or stop the generating process 50 Universal Slave Driver Regardless of whether you are generating or regenerating an active video signal will need to be present at one of the USD s video inputs Ifin doubt always check if the machine is paused stopped or unlaced VITC Timing Rule The following rule is in effect whenever you are generating or regenerating VITC Inserted VITC should be monotonic re gardless of whether it is being regenerated or generated By monotonic we mean that the VITC should be smoothly ascending or descend ing with no repeated or skipped frame ad dresses In order to achieve monotonicity the external positional reference while re generating or the clock source in Genera tor Preset Mode must be synchronous with the video signal onto which the VITC is being inserted Example of VITC Timing Rule As an example if you are using LTC as a po sitional reference from a 3 4 inch U Matic VTR then that VTR should be referenced to the same
31. 3 General Resolver Lock Time LTC 750 msec Video 1 5 sec Word Clock 750 msec Super Clock 1 5 s 1 0 s typical AES EBU 750 msec Bi phase 1 0 sec Pilot 1 1 sec 60 Hz 1 3 sec 50 Hz Frequency Reference Stability 5 ppm from 50 to 131 degrees F 10 to 55 degrees C Aging 2 ppm year typical Burn in Window Position 5 horizontal and vertical positions Size Large and small text Color Black or white text on white or black background or keyed Dimensions Height 1RU 1 75 4 45 cm Width 19 0 48 26 cm Depth 10 5 26 67 cm Weight 5 0 lbs 2 27 kg 74 Universal Slave Driver General Vibration Resistance 5 mm displacement 10 to 55 Hz each axis Shock 5 G max Operating Temperature 32 to 131 degrees F 0 to 55 degrees C Storage Temperature 40 to 176 degrees F 40 to 80 degrees C Relative Humidity O to 95 non condensing Power Requirements Voltage 85 to 264 VAC Frequency 47 to 63 Hz autoswitching Wattage 9 5 W typical 30 W maximum Connector 3 pin AC and ground IEC 950 320 3 2 4 Agency Compliance Meets FCC Part 15 Class 60950 CE EN 55082 1 A limits CE EN 55022A CE EN UL 1419 and CSA 22 2 Appendix B Technical Specs 75 Rear Panel Connectors Connector Specifications LTC In Format Connector SMPTE EBU 80 bit longitudinal
32. 97 fps 29 97 fps drop frame 25 fps 24 fps Chapter 3 USD Hardware and Software Overview 23 6 Status Shows the current state of USD Setup soft ware in relation to the USD and external devices Resolver Locked Lights when the USD is locked to the chosen external clock refer ence or to its Internal clock reference Speed Calibration Lights when the USD system clock and all output clocks are at a frequency that corresponds with the cho sen sample rate Capable of indicating mis match of pull up pull down and frame rate r For details about Speed Calibration charac teristics see 11 Status LEDs on page 19 Generator Running Lights when the USD is regenerating time code at its video LTC and MTC outputs in sync with the incom ing positional reference source Also lit whenever the USD is generating time code internally Connected to USD Lights when USD Setup is the front most window and is communi cating with the USD Waiting for USD Lights when USD Setup is the frontmost window and is unable to communicate with the USD Port Relinquished Lights when USD Setup is not the frontmost window or is unable to allocate a serial port with which to commu nicate with the USD 7 LTC Output Level Adjusts the analog audio level of the USD LTC output from 24 dBu to 9 dBu 24 Universal Slave Driver 8 Freewheel Duration Sets the period of time for which the USD will continue to supply positional refe
33. C Requirements e Make sure the LTC signal is routed prop erly to the USD s LTC In connector e Make sure the VITC striped video signal is routed properly to the USD s Video In connector not the Video Ref In connec tor Chapter 4 Using the USD 41 e Make sure to have or stripe matching code on both your LTC and VITC tracks and your on screen video window burn if any e Make sure to select Auto or the correct line pair for VITC Read For additional information and examples of Auto Switch LTC VITC see Auto Switch LTC VITC on page 68 in Appendix A Serial Time Code For MachineControl equipped Pro Tools systems serial time code can be selected for positional reference This option is config ured from the Pro Tools Peripherals gt Synchronization window Re fer to the MachineControl User s Guide for configuration instructions and require ments Bi Phase Tach Positional Reference Strictly speaking Bi Phase Tach signals are clock reference signals and do not contain positional information of their own How ever they do contain enough information for the USD to calculate positional infor mation To calculate positional reference from Bi Phase Tach requires that the USD be given a starting frame address and a specific pulses per frame value Each of these re lated settings are explained in the follow ing sections 42 Universal Slave Driver To use Bi Phase Tach for positional reference
34. D Setup can download up to date firmware to your USD A To acquire the latest firmware please con tact Digidesign Customer Service or visit the Digidesign Web site Displaying the Current Firmware Version To display the current USD firmware version number from Pro Tools a See the display in the USD Setup section of the Peripherals gt Synchronization win dow To display the current USD firmware version using the front panel Current firmware version is shown dur ing power up in the time code LED display To display the current USD firmware version in USD Setup a The current firmware version is shown in the USD Setup gt Preferences window Updating Firmware To update USD firmware from Pro Tools 1 Choose Setups gt Peripherals and click Synchronization 2 Make sure you have already configured the Synchronization Device and Port op tions for USD Peripherals o Machine Control MDI Controers ProControl Synchronization Device Port Send SSD Configs To Universal Slave Driver DigiSerial Port None Minimum Syno Delay 30 Frames C Enable Control Of Pro Tools Via MMC ID fio USD Setup Enable USD Setup Enable Dub window Current Firmware Version 3 1 2 Size Vertical Position Horizontal Position Update USD Firmware Color Pro Tools Peripherals window 3 Click Update USD Firmware If this op tion is not available
35. D for 19 USD Setup and remote only mode 29 Remote Only Mode 29 Resolver Locked 24 RUN STOP CLEAR 30 S sample rate and Speed Cal status display 19 choosing front panel 31 front panel sample frequency 56 front panel LED displays 18 SECAM 24 use PAL 60 serial port for Macintosh 21 for Windows 20 serial time code and clock reference 32 special clock information 32 using for positional reference 42 Set Generator Start Time 46 Slave Clock see Super Clock 33 Speed Cal display in USD Setup 24 front panel LED and troubleshooting 19 Status in USD Setup 24 LEDs 19 Super Clock 256x clock information 34 choosing as clock reference 33 In connector 22 Out connector 22 T Tach additional signal information 36 connector back panel 20 terminated Video Ref In 20 Video Ref Thru 20 time code drop outs freewheeling 39 generating regenerating 44 serial 32 USD Setup display 23 TTL 83 wiring 88 Index 91 U related settings for 41 Universal Slave Driver 1 timing rule 50 checking status in USD Setup 24 video source rule 47 control options for 27 VSO 25 front panel operation 17 Up switch 29 Ww updating USD firmware 14 window dub USD see Universal Slave Driver front panel enable 58 USD Setup generating 51 Status 24 setting color 53 time code display 23 vertical position 53 window features 14 Wiring 81 Word clock V 1x clock 34 about 69 Variable Speed Override VSO 25 37 Vertical Position 53 video connecting
36. Each press of the Down switch will retard the time address by one frame Remember how many presses you ve accumulated so that you can go back and trim the starting address you pre viously programmed in 44 Universal Slave Driver Generating and Regenerating Time Code The USD generates LTC VITC and MTC si multaneously obtaining time addresses from a variety of sources When the Positional Reference is set to Generate the USD generates LTC VITC and MTC from an internal time address clock This is referred to as Generator Pre set mode When the Positional Reference is LTC VITC or Bi Phase the USD generates LTC VITC and MTC based on the time address of one of those sources This is sometimes called re generation or transla tion For the USD this is referred to as Read Regeneration mode For information about using serial time code with Pro Tools refer to the MachineControl User s Guide Read Regeneration Mode In this mode the USD regenerates time code based upon external positional refer ence information LTC or VITC time code or a Bi Phase Tach signal Subject to cer tain conditions three types of time code LTC VITC and MTC are simultaneously regenerated from the selected positional reference Requirements for Read Regeneration of LTC VITC and MTC LTC The external positional reference must be moving at normal 1x forward speed 18 VITC The positional reference must be LTC or Bi Phas
37. SD will revert to the selected sample rate This feature enables the USD to learn the time code form a spe cific source during successive lockups so lock up times can be optimized If Pitch Memory is disabled and the se lected external clock reference is not avail able then the USD will revert to the nomi nal selected internal sample rate setting 14 Idle MTC Enabled Controls MTC Output during idle play stopped When enabled MTC is continu ously output When not enabled MTC out put is muted when playback is idle See MTC Output and Idle Muting on page 51 for details 15 Window Dub Settings for the USD character genera tor window dubbing features These con trols are also available from within the Pro Tools Peripherals dialog Complete Window Dub instructions are provided in the section Generating a Win dow Burn on page 51 16 Bi Phase Tach Parameters Used for specialized applications that in volve film or other equipment that output Bi Phase Tach information These parame ters must be set to match the Bi Phase or tach source to achieve lock See Positional Reference and Bi Phase Tach on page 38 for more information 17 Generator Bi Phase Preset Serves two functions as determined by the current USD mode Generate mode Sets the time code start time directly by clicking in the Hrs Min Sec Frm fields and typing in a value The Tab key will cycle though the fields Bi Phase T
38. Setup 51 installation USD and a CPU 7 internal clock 36 90 Universal Slave Driver K kHz sample rates 18 L LED Time Code Display 18 LEDs 17 18 Locked 19 LED and troubleshooting 19 LTC 11 and clock reference 34 generation regeneration 46 In back panel 21 Out back panel 21 output level USD Setup 24 output level gain front panel 59 positional reference 39 wiring diagrams 81 LTC Gain 30 M Mac Serial Port 21 connections for Pro Tools Ill 9 connections for Pro Tools MIX and 24 8 pin outs 85 mag and Bi phase Tach 36 MIDI Time Code see MTC monotonic VITC 50 MTC 51 and Idle MTC Output 25 burst mode 51 generation regeneration 51 Out back panel 21 pinout 83 time code output 21 N non drop display of 19 setting from front panel 31 NTSC about 24 or PAL selecting 60 null clock 69 o OMS 15 oscillator reset 64 P PAL about 24 or NTSC selecting 60 PC Serial port 20 pin outs 86 phase see Bi phase 36 Pilot back panel port 20 pinout 82 Tone general 35 Pin 1 2 3 LTC 81 Pitch Memory 37 enabled USD Setup 25 front panel pitch hold 59 Port Relinquished 24 positional reference about 38 front panel LEDs 19 front panel switch 18 selecting 38 USD Setup 23 Pulses Per Frame configuring 35 36 front panel 60 Q Quadrature Sync 36 R Read Regeneration Mode 44 reference clock digital signal information 69 list of supported 4 regenerating time code 44 relays 63 Remote Mode about 29 LE
39. Universal Slave Driver User s Guide Version 5 0 1 Digidesign Inc 3401 A Hillview Avenue Palo Alto CA 94304 USA tel 650 842 7900 fax 650 842 7999 Technical Support USA 650 842 6699 650 856 4275 Product Information USA 650 842 6602 800 333 2137 Fax on Demand USA 1 888 USE DIGI 873 3444 World Wide Web www digidesign com Digidesign FTP Site ftp digidesign com digidesign A division of Avid Copyright This User s Guide is copyrighted 2000 by Digidesign a division of Avid Technology Inc hereafter Digidesign with all rights reserved Under copyright laws this manual may not be duplicated in whole or in part without the written consent of Digidesign DIGIDESIGN AVID and PRO TOOLS are trademarks or registered trademarks of Digidesign and or Avid Technology Inc All other trademarks are the property of their respective owners All features and specifications subject to change without notice PN 932707422 00 RevA 5 00 Chapter 1 Introduction 1 System Requirements eseon ie esr ee eee ee eee eee 1 Compatibility Information o ooooooorr eee eee eee 3 About This Guide sc 3 2 08 A A a eta pear PRE aie er ete re ea are 4 USD Synchronization Support 4 Chapter 2 Installing the USD 7 Connecting USD to a Computer
40. Up or Down switches to show Freewheel Length FrEE LEn in the LED display 2 Press Set again to access freewheel dura tion choices 3 Use the Up and Down switches to scroll through available choices lowest is 4 F4 or four frames highest is 40 Fr or 40 frames 4 When the desired freewheel duration is displayed press Set To set freewheel duration using USD Setup m Choose the desired amount from the Freewheel Duration menu VITC and Positional Reference VITC is a commonly used positional refer ence in professional audio post produc tion Since VITC is time code information that is embedded as part of the video sig nal VITC can be read when the VTR is paused or crawling slowly When working with Pro Tools this means that VITC can be used for Auto Spotting regions to partic ular video frames 40 Universal Slave Driver VITC is less prone to tape drop outs and in this sense is inherently more reliable than LTC VITC can be embedded into any video signal including digital video signals tape or nonlinear without requiring an extra audio track to carry time code Tape Protection Mode and VITC In order for VITC to be read when a video tape is paused the picture must remain vis ible However to save wear and tear on video heads after a few minutes of still pause mode many VTRs will automat ically drop into stop mode which means the tape will be disengaged from the video heads and VITC c
41. Using the USD 47 stream Thus VITC is never inserted when the Positional Reference is set to VITC or Auto Switch LTC VITC Example Video Input Configuration One common situation is transferring video from a source VTR or a nonlinear video editing system to a destination VTR or a nonlinear video editing system The video source signal is connected to one of the USD s video input connectors accord ing to the VITC Video Source rule The USD Video Out signal is connected to the destination device The USD is then able to stripe the second VTR s videotape with VITC At the same time you might also want to insert a window burn as de scribed in Window Burn Display Options on page 53 A Unlike LTC the USD can regenerate VITC with both forward and reverse time code ad dresses To prevent destruction of the original VITC code the USD will not re apply regener ate VITC onto the same video stream from which it is reading VITC LTC If you want to use LTC as a positional source do not select Auto Switch LTC VITC External In order for the USD to regenerate VITC based on an external positional refer ence you ll need to select both a clock ref erence and a positional reference 48 Universal Slave Driver To regenerate VITC based on an external positional reference from the front panel 1 Connect the video source to the USD Video Ref connector and loop to the USD Video Input connector 2 Select VITC Inse
42. _I Lge Lye _ 00 NE 5 BIPHB DPTRETURN Bi phase Tach 82 Universal Slave Driver GPI Relay Outputs GPI Relay Output GPI TTL MTC Outputs o GPI TTL MTC Output Appendix C Wiring Diagrams Pin Assignments 83 GPI opto Inputs TPI opto Input 84 Universal Slave Driver Connector Pin Assignments Connector Pin Assignments Mac Serial Port Pin Name Description Mac Connection 1 NC No connection Pin 2 HSKiB 2 RTS_IN Request To Send input to USD Pin 1 HSKoB 3 RX_OUT Transmitted data output from USD Pin 5 input RXDB 4 GND Chassis ground Ground 5 TX_IN Received data input to USD Pin 3 output TXDB 6 GND Chassis ground Pin 8 input RXDB 7 CTS_OUT Clear To Send output from USD Pin 7 input GPiB 8 NC No connection Pin 6 TXDB Shell GND Chassis ground Ground Appendix C Wiring Diagrams Pin Assignments 85 86 Connector Pin Assignments PC Serial Port Pin Description Connected to chassis ground Received data input to USD Transmitted data output from USD CTS_OUT Request To Send input to USD Clear To Send output from USD NC No Connection Connected to chassis ground No Connection Connected to chassis ground Bi phase Tach GPI Pilot Port Accessory Port Description GPOUTO GPI TTL level output O GPOUT1 GPOUTO_A GPI TTL level output 1 GPI Relay O co
43. ac cording to the setting of the Video Format When set to PAL the pilot tone frequency is assumed to be 50 Hz When set to NTSC 60 Hz is assumed To resolve the USD to Pilot Tone From Pro Tools a In the USD Setup area of the Pro Tools Session Setup window click on the Clock Reference pop up and choose Pilot Tone Using the front panel controls 1 Connect your Pilot Tone reference source to the USD Bi Phase Tach GPI Pilot port 2 Using the front panel Clock Reference switch select Pilot Using USD Setup 1 Connect your Pilot Tone reference source to the USD s Bi Phase Tach GPI Pilot port 2 Select Pilot Tone under the USD Setup s Clock Ref pop up menu If the Pilot Tone reference source is not valid for any reason such as a poor con nection or other signal transmission prob lem the Locked LED on the far right of the USD front panel will flash on and off t For additional Pilot Tone information see Pilot Tone on page 70 in Appendix A Bi Phase Tach and Clock Reference The USD is able to resolve to Bi Phase Tach information for use as a clock reference Bi Phase Tach can synthesize positional refer ence but you must provide a reference start address see Bi Phase Position Trimming on page 44 for other requirements To configure Bi Phase Tach for the USD clock reference Using USD Setup 1 Select Bi Phase Tach under USD Setup s Clock Ref pop up menu 2 Select the appropriat
44. ach Mode Zeros the time code counter to allow the USD to generate time code in relation to the pulses of the incom ing Bi Phase Tach information Establishes a time code start point first frame of a reel for example 18 Variable Speed Override VSO Used to varispeed the rate of the USD inter nal crystal referenced clock 699 cents a cent is one hundredth of a semitone VSO is available at any positional reference set ting but only when the clock reference is Internal VSO Chapter 3 USD Hardware and Software Overview 25 26 Universal Slave Driver chapter 4 Using the USD Control Options The USD can be controlled in three ways e from within Pro Tools e using the front panel controls e using USD Setup Which methods you will use depends on the type of Pro Tools system being used if any and its serial connection between the USD and your system Pro Tools MIX MIXplus and Pro Tools 24 Systems DigiSerial Port equipped systems can use Pro Tools and the front panel to control USD USD Setup can optionally be used for access to specific features described throughout this chapter Pro Tools Ili Systems Pro Tools III and other systems without a DigiSerial Port connection can use Pro Tools and the front panel or USD Setup software Standalone Remote installations no connections to a computer will use the USD front panel switches and displays USD Standalone with Remote Control For software rem
45. an no longer be read off the tape To continue reading VITC you may need to reengage still pause or press play and re shuttle the tape to the desired frame Clock Considerations for VITC To avoid tape protection mode problems and ensure constant clock referencing use the Video Ref In as your clock reference in stead of Video In whenever possible When using Video Ref In and house sync if the video picture disappears the USD will remain resolved to the black burst signal at the Video Ref In connector To use VITC as the USD positional reference using Pro Tools 1 Open the Session Setup window 2 Use the Positional Reference pop up menu to select VITC To use VITC as the USD positional reference using the front panel m Use the front panel Positional Reference switch to select VITC To use VITC as the USD positional reference using USD Setup Choose Vertical Interval Time Code VITC from the Positional Ref pop up menu Additional VITC Related Settings USD Settings Make sure to set the appropri ate clock reference sample rate frame rate and freewheel duration Connections and Sources Make sure that your VITC striped video signal if any is routed to the USD Video In connector not the Video Ref In connector If you use a black burst signal as clock reference con nect it to the Video Ref In connector You should consider using Video Ref as your Clock Reference rather than Video In when working wit
46. arameter values from 2 to 255 pulses per frame The readout will look something like this 0002 3 Use the Down and Up switches to scroll through the parameter values Pressing and releasing the switches will change the value by just one pulse per frame Pressing and holding the switches will scroll at a faster speed 4 When you have chosen your desired op tion press Set The LED display will return to showing time code numbers The USD will retain the setting even when the unit is powered off and on again until it is changed Bi Phase Tach Input Signal This selection is also used for specialized applications that involve film or other equipment that output Bi Phase Tach in 60 Universal Slave Driver formation Here the parameter values will be used to define the direction of the Bi Phase Tach signal 4 IVI C IC Dd H 3 E For complete instructions see Bi Phase Tach Signal on page 43 Video Format System Selects the format NTSC or PAL for both the incoming and outgoing video signals I bg 13 NTSC The standard for North and South America Japan and certain other parts of the world PAL Used in most of Europe Asia and Af rica Users of SECAM video for France Rus sia and certain other parts of the world should select PAL A Please be sure you have selected the cor rect format The USD will not warn you if you have chosen the wrong one To select the desired vide
47. as a source of AES EBU null clock and resolve your system to this reference source In this case the audio sample data in the AES EBU data stream is stripped off and only the clock information is used Super Clock Super Clock or Slave Clock is Digidesign s proprietary hi speed Word Clock that runs at 256x the sample rate It is required by Digidesign Pro Tools systems to synchro nize audio interfaces up to the limits of each system to a single highly accurate Appendix A Additional Synchronization Information 69 clock from USD Pro Tools audio interfaces must always be connected to this separate Super Clock signal chain Bi Phase Tach Strictly speaking Bi Phase Tach signals are clock reference signals and do not contain positional information of their own How ever they do contain enough information for the USD to calculate positional infor mation Bi Phase Tach signals use two square waves to generate pulses that can function as a clock reference The two square waves are 90 out of phase in a pattern that resem bles this Square Wave A Square Wave B With a Bi Phase signal the USD can deduce the direction forward or reverse of the sig nal based upon which wave is read high relative to the other For instance with some film equipment when the device is running forward it will generate a Bi Phase signal where the A wave leads the B wave that is w
48. ated LTC can function simultaneously as a posi tional reference and a clock reference To use LTC as the USD s positional reference From Pro Tools a In the USD Setup area of the Session Setup window choose LTC from the Posi tional Ref pop Using the front panel controls a Using the front panel Positional Refer ence switch select LTC Using USD Setup m Select Linear Time Code LTC under USD Setup s Positional Ref pop up menu Ensure that you ve selected the appropriate clock reference sample rate frame rate and freewheel duration Also make sure the LTC signal is routed properly to the USD LTC In connector Freewheel Duration Freewheel duration time code freewheel configures USD for a maximum number of frames it should continue generating if time code drops out or is otherwise inter rupted Freewheel settings are ignored when USD is in Internal Generate mode Example of Time Code Freewheel In a 30 fps Pro Tools session if Freewheel Duration Time Code Freewheel is 28 frames the USD will continue to generate until either the incoming time code signal is restored or until 28 frames elapse whichever occurs first Chapter 4 Using the USD 39 To set freewheel duration from Pro Tools 1 Choose Display gt Session Setup 2 In the Time Code Freewheel section en ter a number of frames for time code free wheel To set freewheel duration from the front panel 1 Press Set then use the
49. by a 74FCT541 Each output passes 4 4 through a 220 ohm series resistor 5 3 The fuse is thermally activated The cur 6 8 rent rating varies between 1 0 A at 60 C 7 7 and 1 5 A at 20 C The time to trip varies with temperature and current The typical 8 6 time to trip at 1 5 A is 5 minutes Time to trip at 8 Ais 5 seconds After tripping the fuse will return to its low resistance state when the current is reduced sufficiently Appendix C Wiring Diagrams Pin Assignments 87 For Tach the rate input is BIPHA_I and the direction input is BIPHB 1 The polarity of BIPHB 1 is software pro grammable and defaults to low for for ward For Bi phase the default polarity rela tionship between A and B is software pro grammable The default setting for forward is A leads B This means that the rising edge of A 0 phase must precede the rising edge of B 90 phase For highest signal quality use a 25 pin cable with individually shielded conduc tors GPI Relay Wiring for Fader Start The Universal Slave Driver provides a total of four Relay level GPI outputs on pins 3 4 3 10 of the DB25 connector see the circuit diagram GPI TTL MTC Outputs The GPI Relay outputs are intended to drive Relay loads only GPI Triggers GPI output signals information 0 relay Play 1 relay Record Ready 2 relay fader start 1 3 relay fader start 2 4 TTL S
50. ch signal is un derstood to be Forward r n d HI Tach FWD B is High Here when the B signal is in a high state the rate and direction r n d of the Tach sig nal is understood to be Forward 3 Use the Down and Up switches to switch between the parameter values 4 When you have chosen your desired op tion press Set Chapter 4 Using the USD 43 Bi Phase Tach Pulses per frame PPF There are several different standards for the number of pulses per frame output by Bi Phase or Tach devices Using USD Setup s Pulse Per Frame setting you can set the USD to operate from 2 to 254 pulses per frame The setting should match the PPF rate of the external device s Bi Phase Tach encoder To set the pulses per frame value for a Bi Phase Tach signal using the front panel 1 Using the Set Down and Up switches select Bi Phase Tach Pulses Per Frame bIPH PPF 2 Press the Set switch again The LED Time Code Display will switch to display the cur rent PPF value 3 Use the Down and Up switches to scroll through the parameter values range is from 2 to 255 pulses per frame Holding ei ther switch will scrolls at a faster speed 4 When you have chosen your desired op tion press Set Bi Phase Position Trimming While using bi phase as your positional ref erence you can trim the Bi Phase to time code translation at any time Each press of the Up switch will advance the time ad dress one frame
51. connecting a balanced signal to the USD s LTC In or LTC Out connectors e Pin 1 and ground should be connected at Balanced to Unbalanced Connection LTC Out the input only not at the output This Connector Device will prevent ground loops between the 1 Z shield and the Pin 1 conductor so 3 If you are connecting an unbalanced signal to WA KAA the USD s LTC In or LTC Out connectors 4 7 A e Connect only Pin 2 to the signal an e Connect both Pins 1 and 3 to ground at 3 all inputs and outputs Wiring diagrams for the USD s LTC In and LTC Out Refer to the following illustration for the connectors correct wiring diagrams Appendix C Wiring Diagrams Pin Assignments 81 BiPhase GPI Pilot J14 GPOUTO zp as EPDUT1 arho ao An PILDT IN GPOUTO_A zae ie 44 PILOT SINE GPOUTO_8 29h 1742 RETO CPOUTI_A a0 1942 GPINO GPOUT1_8 aif 39 44 RETA GPOUTZ_A 32b 2045 GPIN1 GPOUTZ2_8 a3 7448 RET2 GPOUTI_A 34 2747 GPIN2 ae GPOUTI_ 350 z3 RETI T DPTRETURN JB 7443 GPIN3 BIPHB_I 3717 550 1 2 vDD BIPHA I rae pe 13 75 27 54 Y AMP_750583 8 Y Top connector Biphase GPI Palot Bi Phase GPI Pilot Bi phase Tach Inputs 7 KE VDD B VOD dye GND 5 144 R112 6N137 ia 330 7 E BIPHA I RE zaja Ly 1 D0 Nef 5 BIPHA VDD B GND 5 143 H111 6N137 Ba 330 K_ E BIPHB
52. control of USD independent of Pro Tools Pro Tools Ill Systems m Check to make sure you have already in stalled the most recent Pro Tools and USD Setup software from your Pro Tools In staller CD ROM Optionally USD Setup can be installed to provide access to the complete set of USD parameters and for remote control of USD independent of Pro Tools USD Setup To install USD Setup 1 Make sure the USD is connected to your computer as described in Standalone Mode on page 10 2 Insert the disk containing the latest USD software or navigate to its location if you downloaded the update 3 Launch the installer and follow the on screen instructions Standalone No software is required for standalone mode except to update the USD firmware or to use USD Setup software See USD Setup on page 13 for more informa tion Firmware updates are made available by Digidesign to add capabilities to your USD These updates can be downloaded from our Web site or obtained from your Digidesign dealer Getting Started This section includes software configura tion instructions applicable to Pro Tools USD systems Chapter 2 Installing the USD 13 Software Configuration for Pro Tools and USD Pro Tools provides USD initialization con figuration and firmware update controls To configure USD for Pro Tools MIX MIXplus and Pro Tools 24 systems 1 Start up your system beginning with hard drives then the USD t
53. dealer or from many computer supply stores Compatibility Information Digidesign can only assure compatibility and provide support for devices it has tested and approved For a list of qualified computers diskette drives SCSI accelerators serial port conver tors and hard drives refer to the latest Digidesign compatibility documents avail able from Digidesign by fax or on the Digidesign Web site For a list of Digidesign s contact informa tion see the title page of this guide Chapter 1 Introduction 3 About This Guide This guide assumes you understand the ba sics of synchronization and time code know how to operate devices that send or receive time code such as a video tape re corder and how to connect your studio Refer to the documentation for your studio hardware if necessary In addition you should have an under standing of the time code requirements for your particular project Conventions Used in This Guide Digidesign guides use the following con ventions to indicate menu choices and key commands Convention Action Choose Save Session from the File menu File gt Save Session Control N Hold down the Control key and press the N key Option click Hold down the Option key and click the mouse button Right click Windows Click with the right mouse button 4 Universal Slave Driver The following symbols are used to high light important information
54. e Route B Any other combination of Positional Reference Sample Clock Resolver Circuit O Video Output Circuit Clock Reference Video Ref In or Video In and Clock Reference settings O Word Clock Output O Super Clock Output AES EBU Output Figure 3 Video Input Flow diagram 62 Universal Slave Driver The clock reference labelled Sample Clock Resolver Circuit in Figure 3 on page 62 is selectable at all times You can decide which input signal to use to generate the digital clock signal However when the clock reference is set to Video the positional time code reference circuitry labelled Time Code and Window Dub Circuit in the illustration is not swit chable This is because the positional time code reference circuitry is always used to derive time code whether the USD is read ing incoming time code or generating new time code Even in Generate mode the USD needs to use this circuitry to detect the frame edge of the video in order to gener ate time code Using Fader Start The USD provides six GPI outputs in total two TTL level and four relays Together this combination of outputs makes it possi ble for the USD to provide Fader Start capa bility ss Utilization of Fader Start has specific wiring requirements See GPI Relay Wiring for Fader Start on page 88 Fader Start allows faders in Pro Tools to trigger external devices to play and stop To implement Fad
55. e Set Up and Down switches See Generator Start Time on page 46 for instructions 3 To begin generating press and release the Run Stop Clear switch To generate LTC using USD Setup 1 In USD Setup s Positional Ref pop up menu select Generate 2 In USD Setup s Generator Bi Phase Preset window type in the desired time code start time in Hrs Min Sec Frm To reset click Zero 3 To begin generating click Run 4 When you have finished generating the desired length of LTC click Stop VITC Generation Regeneration When you use the USD to regenerate or generate VITC you ll be inserting VITC into an existing video signal The input is derived according to the following rule VITC Video Source Rule Since USD has two video inputs Video In and Video Ref In the following rule de scribes which of these two signals VITC is applied to If the Positional Reference is set to Gen erate and the Clock Reference is set to ei ther of the two video inputs then VITC will be applied to the video signal at the Video Ref In connector and fed to the Video Out connector Under all other combinations of Posi tional Reference and Clock Reference VITC will be applied to the video signal at the Video In connector and fed to the Video Out connector In addition the USD will not insert new VITC while reading VITC from an external source This is a safety feature to prevent the loss of existing VITC in the video Chapter 4
56. e press will display the first parameter name Set Gen for the time code generator SF 1 BEn l Y Li EJ The default first page of Generator Parameter controls 30 Universal Slave Driver Depending upon the last state of the USD you may see a readout other than SE7 GEn To scroll parameter choices a Press Up or Down as needed to scroll through available parameters Holding the switch scrolls through the parameters To select a parameter to edit a When the desired parameter is displayed press Set This will access that parameter s current setting To edit parameter values a With parameter values displayed press Up or Down to cycle through the available values Examples Example 1 Using Set Down and Up to adjust LTC Gain As an example the following steps explain using the USD front panel controls to change the Linear Time Code output level LTC Gain is the example parameter but the basic steps are similar for most parame ters To select a parameter name and change its respective parameter values 1 Time code numbers should be visible and not blinking in the LED Time Code Dis play If you don t see them press the Set switch until you do 2 Press the Set switch The LED Time Code Display will switch from showing time code numbers to a parameter name The first name is Set Generator SE7 6En al though you may see a different name de pending upon the USD s last settings 3 Pres
57. e Ensure that another terminated video device is fed from the loop through con nector Connector Female BNC 4 Video Reference Thru A parallel unbuffered connection output for any video source connected to the Video Reference In port allows black burst or other video reference to be passed to an other device Continues to output what ever signal is present at the Video Reference In port regardless of whether or not the USD is powered up Connector Female BNC A If the USD is the last device in the video sync chain a BNC Terminating Plug supplied must be attached to this connector 5 Mac Serial Port A bidirectional in out port designed for use exclusively with the DigiSerial Port found on all Pro Tools MIX and d24 cards or to a modem printer port on a compati ble Macintosh host computer Connector Female mini DIN 8 8 pin 6 Video In Receives a signal from an NTSC PAL video source for clock or VITC positional refer ence input or for generating a window burn This connector is internally termi nated at 75 ohms Connector Female BNC 7 Video Out If the Positional Reference is set to Gener ate and the Clock Reference is set to one of the two video inputs this will output a copy of the video signal appearing at the Video Reference input Under all other combinations of Positional and Clock Ref erence settings this will output a copy of the video signal appearing at the Video In input I
58. e If the Positional Reference is set to Gen erate generated LTC MTC VITC count and Window Dub outputs are resolved to the same internal crystal reference To resolve the USD to its internal clock From Pro Tools a In the USD Setup area of Pro Tools Ses sion Setup window select Internal from the Clock Reference selector Using the front panel controls m Use the front panel Clock Reference switch to select Internal Using USD Setup m Select Internal VSO from the USD Setup Clock Ref pop up menu Variable Speed Override VSO You can varispeed the rate of the USD s crystal referenced internal clock to fine tune the speed and subsequent pitch of Pro Tools and any device receiving its clock reference from the USD Maximum VSO range is 699 cents 6 semitones VSO is available at any posi tional reference setting VSO is not avail able from the front panel controls but can be controlled directly from Pro Tools and USD Setup To varispeed the rate of the USD s internal clock Using Pro Tools 1 Choose Windows gt Session Setup and expand the Session Setup window to full view 2 Click to enable VSO an X indicates VSO is enabled 3 Adjust the varispeed value using the on screen slider Using USD Setup 1 In the USD Setup s Variable Speed Over ride section check the VSO Enabled box An X indicates that varispeeding is en abled Variable Speed Override _ p x
59. e Pulse Per Frame and Input Signals parameters as described in Bi Phase Tach Starting Frame on page 42 and Bi Phase Tach Signal on page 43 Typically when you use Bi Phase Tach as the clock reference you will also be using it as the positional reference see Bi Phase Tach Positional Reference on page 42 Chapter 4 Using the USD 35 Using the front panel controls 1 Using the front panel Clock Reference switch select BI PHASE TACH 2 Select the appropriate Pulse Per Frame and Input Signals parameters as described in Bi Phase Tach Starting Frame on page 42 and Bi Phase Tach Signal on page 43 A If the Bi Phase Tach reference clock source is not valid for any reason such as a poor con nection or other signal transmission problem the Locked LED on the far right of the USD front panel will flash To select Bi Phase Tach as the positional reference from Pro Tools a In the USD Setup area of Pro Tools Ses sion Setup window click on the Clock Ref erence pop up and select Bi Phase Additional Bi Phase Tach Information Bi Phase Tach is used with mag ma chine 16 35 and 70mm projectors flat bed editing systems and other types of mo tor driven film equipment Bi Phase sometimes called Quadrature Sync and Tach information are similar though they do differ Bi Phase A Bi Phase signal consists of two square waves which are generated directly by a device s transport mechanism
60. e Tach at any readable speed forward or reverse or when the positional reference is set to Generate The USD will not regenerate VITC if the positional refer ence is VITC MTC In order for the USD to regenerate continuous MTC the external positional reference must be moving at normal 1x forward speed 8 Outside of this speed range and direction MTC is generated in bursts every 200 milliseconds This allows MTC slaved devices to read VITC or Bi Phase properly in either direction and at speeds down to zero The USD begins re generating MTC as soon as it again detects a valid positional reference signal To optionally mute idle time MTC output see MTC Output and Idle Muting on page 51 If the positional reference is LTC or VITC USD will regenerate time code addresses that match the incoming time code ad dresses If the positional reference is a Bi Phase Tach signal the USD will generate time code addresses starting at the Bi Phase preset start time See Bi Phase Tach Start ing Frame on page 42 for more informa tion Generator Preset Mode In this mode the USD generates time code internally from a start time based upon the Generator Preset Time Using either USD Setup or the front panel controls you can start stop resume and reset time code generation When generating time code in Generator Preset Mode the USD time code generator is resolved locked to one of three possible sources based
61. e appropriate clock reference us ing USD Setup s Clock Reference menu 5 Select either LTC or Bi Phase Tach from the USD Setup Positional Reference pop up window The USD will now regenerate VITC and in sert it onto the video signal as soon as it re ceives a valid clock reference signal and po sitional reference signal Internal VITC Generation The USD can also generate VITC internally using its integral time code generating fea ture In this mode Positional Reference switch Generate you can use either an external clock reference or the USD s inter nal crystal as a clock reference with a vari able start time When generating VITC internally if the in sertion is not timed based upon an up stream video reference you may encounter repeated or skipped VITC frames Be sure to check VITC Timing Rule on page 50 and VITC Video Source Rule on page 47 To generate VITC internally using the front panel controls 1 Ensure that the USD is connected in line with a video source and video destination 2 Select VITC Insertion VI7C In5 using the Set Down and Up switches For de tailed instructions see VITC Insertion on page 56 3 Use the Down and Up switches to display VITC Insertion on off 4 When on is selected press Set 5 Select VITC Generate Lines 6En LInE using the Set Down and Up switches 6 Press the Set switch again The default line pair is 14 16 which is also the SMPTE rec
62. e the Window burn appearance settings Size Vertical Position Horizontal Position and Color See Window Burn Display Options on page 53 for details 5 After configuring the dub window set tings click OK to close the Peripherals win dow To configure Window Dub using USD Setup 1 In the Dub Window section of USD Setup select Window Enabled 2 Specify the appearance of the window dub with the pop up menus for Vertical Po sition Horizontal Position and Color See Window Burn Display Options on page 53 for details 3 Ensure that all the proper video connec tions have been made and that you ve se lected the correct positional reference After you have completed these steps you ll burn a window dub with time code addresses based upon the selected posi tional reference onto any video signal that s passing through the USD To turn off window dubbing m Deselect Window Enabled To enable window dub using the front panel controls 1 Using the Set Down and Up switches select Burn Enabled burn EnA 2 Press the Set switch again The LED Time Code Display will switch to display the cur rent On or Off setting for Window Burn 3 Use the Down and Up switches to switch between the parameter values 4 When you have chosen your desired op tion press Set The time code character generator can now burn time code addresses based upon the selected positional reference onto any video signal that
63. er Start Pro Tools maps the first two visible auxiliary input chan nels in a session to GPI Relay outputs 0 and 1 first being left to right in the Mix win dow top to bottom in the Edit window Example Fader Start Application In a typical scenario the Fader Start feature controls playback of a CD player The CD player outputs are routed into a Pro Tools stereo Aux Input As the Aux channel fader is moved above 120 dB playback of the CD player is automatically triggered Like wise as the fader is moved below 120 dB playback is automatically stopped To rearrange tracks drag the Track Name plate left or right in the Mix window or up or down in the Edit window Refer to your Pro Tools Reference Guide if you need addi tional information To configure Pro Tools tracks for Fader Start Play and Stop 1 Use the New Track dialog to create two new auxiliary input tracks If you already have aux tracks you will use the first and second top most in the Edit window left most in the Mix window 2 When the first visible aux input in a Pro Tools session is above 120 dB GPI Re lay output 3 Fader Start 1 will be en abled otherwise it will be disabled Similarly when the second visible aux in put in a Pro Tools session is above 120 dB GPI Relay output 4 Fader Start 2 will be enabled otherwise it will be disabled If you rearrange channel strips in the Pro Tools Mix or Edit windows the two GPI outputs
64. es can be found in the section Using the Front Panel Generator Parameter Switches on page 29 USD LED display of abbreviated parameter names USD LED Parameter SE7 6En Set Generator Start Time dl6 rEF Digital Reference SPL FrEC Sample Freq Rate VI7C InS VITC Insertion rdr LINE VITC Reader Line 6En LInE VITC Generate Line burn EnA Window Burn On Off FrEE LEn Freewheel Duration L7C 6Aln LTC Output gain PICH HLd Pitch Hold On Off bIPH PPF Bi Phase Pulse per frame bIPH SI6 Bi Phase Signal Configuration VIdEO SY Video System Format NTSC PAL IdLE 7C Idle MTC On Off Chapter 5 Additional Operational Information 55 Set Generator Start Time See the section Generator Start Time on page 46 for configuration instructions EE b En Digital Clock Reference cr oT y JE The USD can use one of three possible dig ital clock references AES EBU Super Clock 256x or Word Clock 1x See the section Digital AES EBU Word Clock and Super Clock on page 33 for complete configuration instructions Sample Rate Frequency Selecting this parameter name lets you choose the USD s sample rate EDS E EF GF L Fr EL 56 Universal Slave Driver The table below shows USD Sample Rate indication with the four Sample Rate LEDs USD LED displays and Sample Rates USD LEDs ON Sample Rate 44 1 kHz 44 100 kHz 48
65. evice for the USD 2 Enable both Receives and Sends MIDI Time Code 3 Deselect Receives Sends MIDI Beat Clock and Receive Sends MIDI Machine Control 4 Deselect all Receive Channels for the USD and click OK to close the New Device window MIDI Device Info Device ID 0 USD Receives Sends MIDI Time Code X MIDI Beat Clock MIDI Machine Contro1 _ O Is controller O Is multitimbral Receive Channels 1 2 34567 8 910111213141516 Tama tance C OMS definition for the USD 5 In the main OMS Setup window connect the USD device to the appropriate MIDI in terface 6 Since the USD does not have a MIDI in put port OMS Setup does not require a software connection coming from the MIDI interface and going to the USD icon Click the arrowhead of the line directed to wards the USD icon to deactivate this con nection 7 If necessary select the appropriate MIDI port for USD 16 Universal Slave Driver Troubleshooting This section describes common synchroni zation problems and some possible solu tions Status LEDs The status LEDs LOCKED and SPEED CAL on the USD Front Panel may help you iso late potential problems See 11 Status LEDs on page 19 for details about these in dicators and their meaning Use the Current TC field in Pro Tools Session Setup Window as a Reference The Current TC field in the Session Setup Window indicates whether or not USD is receiving pos
66. f for both the USD and the computer 2 Connect one end of the cable to the Mac Serial port of the USD 3 Connect the other end of the cable to ei ther the modem or printer port or serial port adaptor of your Macintosh 4 Restore power to the USD and restart your computer 5 Connect the rest of your equipment to the USD as described in the following sec tions of this chapter 6 Install USD Setup see Software Installa tion on page 13 USD Setup USD Setup requires a serial connection from the USD to a Macintosh or Windows computer For compatibility information see System Requirements on page 1 To connect the USD to a Macintosh computer without Pro Tools 1 Make sure the power is switched off for both the USD and the computer 2 Connect the USD Mac Serial port to the modem or printer port or serial port adap tor on your computer To connect the USD to a Windows computer without Pro Tools 1 Make sure there is a COM port available and enabled refer to your Windows NT documentation for information on en abling COM ports if necessary 2 Make sure the power is switched off for both the USD and the computer 3 Connect the USD PC Serial port to an available COM port A USD Setup will not control USD through the DigiSerial port 4 Restore power to the USD and restart your computer 5 Connect the rest of your equipment to the USD as described in the following sec tions of this chapter
67. h Memory if you want to digitally transfer to another device and to ensure the receiving device gets the correct sample rate Also turn pitch memory off if you are doing an analog transfer to Pro Tools and want to en sure that the recording is made at the exact sample rate set by the session set up window To enable or disable the USD s pitch memory feature 1 Select Pitch Hold PICH HLd using the Set Down and Up switches 2 Press the Set switch again The LED Time Code Display will switch to display one of the two parameter values On On Off OFF 3 Use the Down and Up switches to switch between the parameter values 4 When you have chosen your desired op tion press Set The LED Time Code Display will return to showing time code numbers The USD will retain the setting even when the unit is powered off and on again until itis changed Chapter 5 Additional Operational Information 59 Bi Phase Tach Pulses Per Frame This selection is used for specialized appli cations that involve film or other equip ment that output Bi Phase Tach informa tion The parameter values set the number of Bi Phase Tach pulses per frame of time code y mi H A yy DIF FP To set the pulses per frame value for a Bi Phase Tach signal 1 Select Bi Phase Tach Pulses Per Frame bIPH PPF using the Set Down and Up switches 2 Press the Set switch again The LED Time Code Display will switch to display the cur rent p
68. h VITC because a black burst signal at the Video Ref input will always be there unlike the video signal at Video In which may disappear if the videotape disengages Auto Switch LTC VITC Positional Reference In Auto Switch mode the USD switches au tomatically between LTC and VITC de pending upon which is delivering the best time code signal This is indicated on the front panel by the LTC and VITC positional reference LEDs both will be lit and by a decimal point between the minutes and seconds on the front panel time code dis play VITC cannot be read at high speeds shuttle speeds for example while LTC can and LTC cannot be read at slow speeds while VITC can be read at slow speeds and when parked Auto Switch LTC VITC provides the best of both LTC and VITC reading without having to manually switch set tings To select Auto Switch LTC VITC using Pro Tools 1 Open the Session Setup window 2 Choose Auto Switch LTC VITC from the Positional Reference pop up menu To select Auto Switch LTC VITC using the front panel m Press the Positional Reference switch to select Auto Switch LTC VITC indicated when both the LTC and VITC LEDs are si multaneously lit To select Auto Switch LTC VITC using USD Setup m Choose Auto Switch LTC VITC from the Positional Ref pop up menu Make sure to select the appropriate clock reference sample rate frame rate and free wheel duration options Auto Switch LTC VIT
69. he window dub and the color of the window dub s background The choices include White on Black Bkgnd Black on White Bkgnd White on Video Bkgnd or Black on Video Bkgnd Video Bkgnd means that the window dub s background is transparent so that the time code num Chapter 4 Using the USD 53 bers are displayed directly on top of the video signal without a contrasting back ground box The default setting is White on Black Bkgnd gt Default Window Burn settings are listed in Restoring Factory Settings on page 65 54 Universal Slave Driver Additional Operational Information Front Panel Generator Parameter Controls This section details the parameter features available from the multi function SET UP DOWN and RUN STOP CLEAR switches Referred to as Set Up Down and Run Generator start stop and related functions of the Set Up Down and Run switches are explained in Generating and Regenerat ing Time Code on page 44 Parameters The USD 7 segment LEDs are not able to show all upper and lower case characters properly and in some cases use numerals to represent letters such as 5 to represent S or s The following table identifies each of these abbreviations To select USD front panel parameters 1 Press Set 2 Use the Up and Down switches to scroll through available parameters described below Detailed instructions for the multi func tion Generator Parameter switch
70. hen MIDI other studio equipment and then the CPU 2 Launch Pro Tools 3 Choose Setups gt Peripherals and click Synchronization 4 In the Synchronization Device pop up select Universal Slave Driver 5 Select DigiSerial Port for the Synchroni zation Port Once USD is selected as the Synchroniza tion device the USD Enable controls at the bottom of the window become active Peripherals Synchronization Machine Control MIDI Controllers ProControl Synchronization Port Send SSD Configs To DigiSerial Port None Minimum Syne Delay 30 Enable Control Of Pro Tools ViaMMC 1D Ji Pro Tools Peripherals dialog configured for the USD on DigiSerial Port 14 Universal Slave Driver Software Configuration for USD Setup To configure USD Setup 1 Make sure the USD is connected to your computer according to the instructions in Connecting USD to a Computer on page 7 2 Launch USD Setup 3 Choose Preferences gt USD Setup Prefer ences 4 If not already selected choose the appro priate serial port for your USD to CPU con nection 5 Close the Preferences window Updating USD Firmware The USD contains a flash EEPROM that al lows you to update the firmware in your unit at any time As Digidesign continues to create improvements for USD you can update your unit without having to send it back to the factory or replace any chips Pro Tools and US
71. here the A wave peaks be fore the B wave peaks When the device is in reverse the B wave will lead the A wave However some film equipment works in the opposite manner which is why the USD s Input Signals option lets you make the appropriate selection Fwd A leads B or Fwd B leads A 70 Universal Slave Driver Calculating the direction of a Tach signal is slightly different As you may recall Tach also uses two signals The A signal is a square wave that provides clock informa tion the B signal is in a steady state high or low that indicates the direction Unfor tunately not all Tach generating equip ment uses the B signal in the same way Fortunately the USD s Input Signals op tions allows you to choose the appropriate method Tach Fwd B is Low or Tach Fwd B is High This explains how the USD can use a Bi Phase Tach signal to deduce the direction and how it also uses the signal as a clock reference as long as USD is told the start ing frame of the first clock signal Pilot Tone The USD can resolve to an external Pilot Tone signal for synchronizing to or trans ferring audio from certain types of open reel audio tape recorders In general Pilot Tone is a sine wave refer ence signal running at the line frequency or mains frequency meaning the same frequency transmitted by the AC line volt age from the local power utility Pilot Tone is used on location film sh
72. i cal in appearance to the serial ports on your CPU it is designed to only be used for e the USD proprietary serial connection 0r e a serial to 9 pin cable in combination with the MachineControl option for Pro Tools This should only be connected to the DigiSerial Port when there is no USD present in the system A The DigiSerial Port should not be used for connecting MIDI Interfaces or any other serial device Attempting to do so will adversely af fect Pro Tools performance Rules for Using the DigiSerial Port for USD in Expanded Pro Tools Systems The active DigiSerial Port will be on the Digidesign MIX or d24 card connected to the primary Pro Tools audio interface If your system is a Pro Tools MIXplus connect your USD to the DigiSerial Port on the first Pro Tools 24 MIX card the bus master card If you have a combination of Pro Tools 24 MIX and Pro Tools d24 cards use the DigiSerial Port on the first Pro Tools MIX card If you have more than one d24 card and are using only d24 cards no MIX hard ware use the DigiSerial Port on the first d24 card in your system Pro Tools Ill Systems Pro Tools III systems do not have a DigiSe rial Port so a Macintosh modem or printer port or serial port adaptor must be used for the USD serial connection See USD Serial Port Requirements on page 2 To connect a USD to Pro Tools III no DigiSerial Port 1 Make sure the power is switched of
73. interchangeably except while referring specifically to Bi Phase Tach as noted in the following sec tions Selecting a Positional Reference To select a positional reference from Pro Tools 1 Open the Session Setup window 2 Choose a reference setting from the Posi tional Reference pop up menu To select a positional reference using the front panel m Press the Clock Reference switch to cycle the USD through its available clock refer ences To select a positional reference using USD Setup a Choose a reference setting from the Posi tional Reference pop up A Be sure to select the appropriate frame rates whenever you use LTC or VITC as your po sitional reference Positional Reference Options The following sections provide additional information and configuration instruc tions for each available Positional Refer ence format Linear Time Code LTC LTC is often striped onto an ATR or VTR au dio track Professional VTRs typically have an address or cue track intended for LTC If you are working with a standard audio tape you ll almost certainly be working with LTC if you re working with a video tape you may be able to work with either LTC or VITC or both LTC can also be generated as an interpola tion of Absolute code This is how time code DAT machines DA 88 and many dig ital VTRs work In any case LTC is deliv ered to USD as a series of audio pulses re gardless of how it is stored or gener
74. itional reference If this field appears to be inactive when inputting time code to the USD check your hardware de vice settings serial connection to your computer and your software settings Current TC E E 48000 ADAT 00 00 00 00 optical 30 FPS Generate Time Code Time Code Freewheel Sample Rate Pull Up Down Using USD O None O none Cmte To Port 9 _e trames O Punup O yam Sino O Pun Down 0 Universal Slave Driver Setup Clock Reference Positional Reference LTC Current Time Code display USD Hardware and Software Overview USD Front Panel O cu NCE Suin oO AME digidesign E e olaaa o USD ru 10 808100 Ab Ba SYNC CO unwersar stave DRIVER 1 2 3 4 5 6 7 8 9 10 11 Figure 1 USD Front Panel Controls and Displays 2 Clock Reference Switch All USD local controls are on its front Selects the USD clock reference with green panel the rear panel is reserved for connec LEDs tors only This section identifies each front panel switch and display Clock References For information on rear panel connectors VIDEO and setup see Chapter 2 Installing the USD LTC DIGITAL 1 AC Mains Power Switch rd BI PHASE TACH Down USD power is on Up O power INTERNAL VSO is off 3 Clock Reference LEDs Green LEDs display the active clock refer ence as selected
75. l audio products are accurate to within 20 to 50 ppm and drift with temperature The 64 Universal Slave Driver USD s accuracy is possible because it con tains a low jitter high stability tempera ture controlled crystal oscillator Warm Up USD Before Recalibrating Before you begin the calibration procedure power on the USD and allow it to warm up for at least five minutes The temperature of the room or chassis isn t critical during the calibration procedure However if you need better than 3 ppm accuracy it is rec ommended that you allow the USD to warm up for at least 30 minutes and that the chassis be at normal operating temper ature To restore the USD s oscillator calibration to its factory setting 1 Press Set then press Up until Video Sys tem VIdEo SY is displayed in the LED readout 2 With the LED Time Code Display show ing VIdEo SY press and hold the Up switch While you continue to hold that switch press the Clock Reference switch momen tarily and then release both switches The LED Time Code Display will read 3 Press the Set switch again The LED Time Code Display will switch to display the cur rent parameter value which shows a sam ple rate frequency deviation from 0999 to 0999 4 Take note of the Oscillator Calibration value printed on the factory sticker on the USD bottom panel 5 Use the Down and Up switches to scroll through the parameter values Pressing and re
76. leasing the switches will change the value by just one incremental value Press ing and holding the switches will scroll at a faster speed 6 When you reach a value that matches the sticker s value stop scrolling and press Set The LED Time Code Display will return to showing time code numbers Your USD is now properly calibrated The next time you press Set the LED Time Code Display will again show O5C CAL If you then press the Down switch you ll dis engage the Oscillator Calibration parame ter name To change the setting once again you ll need to repeat steps 1 through 6 Restoring Factory Settings The USD can be reset to its default factory settings See USD Defaults on page 65 for default values To reset all parameters to default settings 1 Switch off power to the USD and wait at least 10 seconds 2 Hold down the Up and Down front panel switches and switch on power to the USD do not release the Up and Down switches until the display reads FAC CFG A Resetting factory settings does not reset the USD oscillator See Calibrating the USD Oscillator on page 64 for information USD Defaults Parameter Name Default Set Generator Start Time 00 00 00 00 Digital Reference AES EBU Sample Freq Rate 44 1 kHz VITC Insertion On VITC Reader Line All VITC Generate Line 14 16 Window Burn On Off On Enabled Freewheel Duration 8 frames LTC Out
77. m oS 00 00 00 Zero set Yariable Speed Override Semitones ya y vso 4200060000 Lo Get Enabled Cents USD Setup 1 Time Code Window The time code display mirrors the LED Time Code Display on the USD front panel displaying in hours minutes sec onds frames the time code address of the current positional reference Display of Odd Even Fields When the USD is reading odd numbered fields the separa tor changes from a normal colon to a pe riod when it s reading even numbered fields the punctuation returns to a colon Odd even status is only available while reading VITC and only when VITC is within a speed range from zero to about 50 of playback speed 2 Clock Reference Selects the USD clock reference which in clude Video Video Reference Input Video Video Input Linear Time Code LTC Digital AES EBU Digital Super Clock Digital Word Clock Pilot Tone Bi Phase Tach Internal VSO 3 Sample Rate Selects the USD sample rate or the Pro Tools session sample rate if applica ble 4 Positional Reference Selects the USD positional reference which include Linear Time Code LTC Vertical Interval Time Code VITC Auto Switch LTC VITC Bi Phase Tach Generate 5 Frame Rate Selects the frames per second fps rate of external or internally generated time code 30 fps 30 fps drop frame 29
78. n Rate Frame rate max Latency Half frame max MIDI Time Code MTC Out Current Rating 15 mA current loop Rate Connector 31 25 Kbaud 5 pin DIN female Appendix B Technical Specs 79 Rear Panel Connectors Cable Length 50 feet 15 meters max Format Apple Macintosh compatible serial printer port Connector 8 pin mini DIN female Cable Length 50 feet 15 meters max PC Serial Format PC compatible RS 232 serial port Connector 25 pin D subminiature female DB25 Cable Length 50 feet 15 meters max VITC In SMPTE 90 bit drop frame non drop frame Line Range 10 to 40 all line mode 10 to 22 single line mode VITC Out Format SMPTE 90 bit drop frame non drop frame Line Range Two lines 10 to 20 80 Universal Slave Driver appendix c Wiring Diagrams Pin Assignments LTC Balanced to Balanced Connection The USD s LTC In and LTC Out connectors cone Connector evice are balanced XLRs with Pin 2 wired or 1 2 v hot Pin 3 wired or cold and Pin 1 NC ae a wired to ground shield Depending on 3 jeg whether you are connecting a balanced or TCin unbalanced signal to these connectors dif cae pec ferent wiring configurations are recom Y mended for optimum signal integrity es anD pecially for long cable runs If you are
79. n either case this output might addition ally carry VITC and or Window Burn infor mation if those features are enabled Connector Female BNC 8 MTC Out Outputs MIDI Time Code MTC only No other MIDI data appears at this output MTC output can be regenerated while the USD is locked to any supported positional reference and clock reference or internally generated in Generate mode in which case MTC output follows generator run stop Intended to supply MTC from the USD to external sequencers or other MIDI devices Connector Female standard DIN 5 pin 9 LTC In Receives a Linear Time Code LTC source balanced or unbalanced analog for clock and positional reference This port is often used to receive LTC from an audio track on an external deck or the address track of a VTR Connector Female XLR style 3 pin Pin 2 or hot Pin 3 or cold 10 LTC Out Outputs linear time code in balanced or unbalanced analog audio format Connector Male XLR style 3 pin Pin 2 or hot Pin 3 or cold When the LTC Out port is connected in unbalanced mode Pin 3 must be grounded See Appendix C Wiring Diagrams Pin Assignments for wiring details 11 AES EBU In Receives an AES EBU digital audio signal for clock reference purposes only The USD utilizes only the signal s clock information not the audio information If digital audio information is present at this
80. nal positional reference except Gen erate To regenerate LTC using the front panel a Using the USD Positional Reference switch select the desired external posi tional reference do not select Generate The USD regenerates LTC as soon as it re ceives a valid positional reference signal To regenerate LTC using USD Setup m Select the desired external positional ref erence from the Positional Reference pop up any choice except Generate Generating LTC In Generator Preset mode the USD can generate LTC using either an external or in ternal clock reference This allows the USD to function as a complete standalone time code generator Make sure LTC is correctly routed and that all your other gear is properly configured before you begin See Example 1 Using Set Down and Up to adjust LTC Gain on page 30 for USD LTC instructions If neces sary adjust the input level for the destina tion device To generate LTC using Pro Tools 1 In the Session Setup window choose Generate from the Positional Reference pop up menu 2 Activate Online Mode in Pro Tools 3 Start Pro Tools recording or playback Pro Tools commands the USD to begin gen erating LTC with time addresses synchro nized to the session timeline To generate LTC using the front panel controls 1 Using the USD s Positional Reference switch select Generate 2 Configure the desired time code start in hours minutes seconds frames using th
81. nd Clock Reference were set to LTC Remote Mode This green LED lights when the USD is set to Remote Only Front Panel Lockout Mode For more information see the section About Remote Only Mode on page 29 Chapter 3 USD Hardware and Software Overview 19 USD Rear Panel INTERNALLY T TERMINATED BIPHASE TACH GPI PILOT PC SERIAL VIDE REF MAC JERIAL valgo Figure 2 USD Rear Panel 1 Bi Phase Tach GPI Pilot port With a properly wired cable this serves as accessory port inputs for Bi Phase Tach and Pilot signals This connector is also used for GPI input output including Fader Start and thru signals Connector Female DB 25 ex Refer to Appendix C Wiring Diagrams Pin Assignments for wiring information and other specifications for this port 2 PC Serial port A bidirectional in out port is designed for use exclusively with a PC compatible host computer Connector Female DB 25 3 Video Reference In Receives a signal from an NTSC PAL video source such as a black burst house sync generator or a standard video signal for clock reference and window burn purposes This jack is configured as an un terminated loop through Therefore you must either 20 Universal Slave Driver ORD PLOCK SUPER c ock 25x 12 1314 15 16 17 18 19 e Connect a 75 ohm terminator included with the USD to the unused loop through connector Video Reference Thru on the back panel 0r
82. nd the USD using the video signal as the clock reference is of ten satisfactory In these situations proper sync can be achieved using the video signal as Clock reference Why VITC is Unavailable for Clock Reference VITC itself does not provide clock informa tion directly as part of its time code infor mation only positional information How ever since VITC is always embedded into a video signal that video signal can be used as a clock reference by selecting Video In put as the clock reference or Video Ref In if your facility has house sync LTC Signals Because it s an analog audio signal LTC can sometimes be susceptible to either tape dropouts tape shedding or to level mis matches between the LTC source and the LTC input The USD s freewheeling feature allows you to compensate for brief time code dropouts However if you have seri ous dropouts you may not be able to sus tain accurate synchronization Appendix A Additional Synchronization Information 67 If you plan to use LTC as a Clock Reference whether or not you are also using it as a Positional Reference you will need to en sure that your LTC is recorded at as high a level as possible without distortion and that there are no dropouts longer than 1 80th of a frame The USD reads LTC most reliably when fed with a LTC signal of at least 12 dBu and preferably O dBu to 3 dBu Working with Analog Machines Itis good practice on a 24 track
83. nerator window dub Don t worry if you have just a single video source The USD provides a very simple method for connecting your single video source to both of the video inputs See Us ing Video Inputs with VITC and the Char acter Generator on page 62 In a typical video setup you will supply a reference video signal black burst or color bars to your VCR and to the USD Video Ref input You will then connect the VCR s video output to the USD Video In input Fi nally the USD Video Out will be fed to your picture monitor and or another VCR Using Video Inputs as Clock Reference The USD lets you choose either of its video inputs as the Clock Reference for generat ing system clocks There is no performance advantage to choosing one input over the other Pro Tools and USD Setup allow you to freely select either input If you plan to control your USD only from its front panel then there is a flexibility ad vantage in using the Video Ref input as your Clock Reference This is because there s no way to select the Video In con nector as the Clock Reference when using the front panel controls When you use the Chapter 5 Additional Operational Information 61 front panel Clock Reference switch to se lect VIDEO as the Clock Reference it s re ferring to the Video Ref connector and never to the Video In connector To avoid the chance of this limitation get ting in your way we suggest that you con nect your refe
84. ng uso O None None LIMTE To Port _e trames O Pun Up Om Sine C Fun Down o Universal Slave Driver Setup Clock Reference Positional Reference Video In Video Reference LTC Bi Phase Pilot Tone AES EBU Super Clock 256x Word Clook 1x Configuring the USD Clock Reference from Pro Tools To choose a clock reference using the front panel controls Push and release the Clock Reference switch to cycle the USD through its avail able clock references To choose a clock reference using USD Setup m Select a setting from the Clock Reference pop up menu 32 Universal Slave Driver Clock Reference Options The following sections provide specialized instructions for each clock reference choice Video Clock Options Depending upon how the USD is config ured this clock reference may be the Video Ref In or the Video In connector for more details see Limitation When Using Front Panel Clock Reference Switch on page 32 For House Sync Black Burst Use the USD Video Ref Input For Incoming Video Use the Video In con nector Serial Time Code with MachineControl MachineControl equipped Pro Tools sys tems can utilize serial time code When us ing MachineControl with serial time code as the positional reference the USD must be locked to Video Ref In this scenario the USD is set to Generate mode to indicate that positional information is acquired by Pro Tools directly over the 9 pin cable
85. not through the USD Consult the MachineCon trol User s Guide for complete serial time code information Limitation When Using Front Panel Clock Reference Switch When you choose Video using the front panel Clock Reference switch the USD uses the signal at the Video Ref In connector To choose the signal at the Video In connector as your clock reference you must use USD Setup or Pro Tools If you have only a single video source and since USD uses different video inputs de pending on configuration you may want to follow the wiring tip below to ensure that you have full functionality in all con figurations To work with a single video source 1 Connect the video signal to Video Ref In 2 Run a short BNC jumper cable from the Video Ref Thru connector to the Video In connector 3 Connect the Video Out signal to the video input of your destination VTR or video editing system The issue of which video connector is used also matters when choosing a positional reference For instance when the USD is in Generate mode and Video is the current clock reference the time code reference for the generator is always from the Video Ref In connector However if you select a positional refer ence other than Generate then the signal at the Video In connector is used ss For more video signal information refer to Video and VITC Signals on page 67 in Ap pendix A Digital AES EBU Word Clock and Super Clock To
86. ntact A GPOUTO_B GPI Relay O contact B GPOUT1_A GPOUT1_B GPI Relay 1 contact A GPI Relay 1 contact B GPOUT2_A GPI Relay 2 contact A GPOUT2_B GPOUT3_A GPI Relay 2 contact B GPI Relay 3 contact A GPOUT3_B GPI Relay 3 contact B OPTRETURN BIPHB Return from Bi phase Tach opto isolators Input to Bi phase Tach opto isolator B BIPHA Input to Bi phase Tach opto isolator A GND Universal Slave Driver Chassis ground Connector Pin Assignments PILOT_IN Pilot tone input negative PILOT_IN Pilot tone input positive RETO Return from GPI opto isolator 0 Input to GPI opto isolator O Return from GPI opto isolator 1 Input to GPI opto isolator 1 Return from GPI opto isolator 2 Input to GPI opto isolator 2 Return from GPI opto isolator 3 Input to GPI opto isolator 3 5V DC fuse protected see notes below Connected to chassis ground USD Serial Cable Pin Bi phase Tach GPI Pilot Assignments Port Interfacing Notes The six opto isolators are 6N137 devices Mini DIN 8 pin Male to Mini Each port input passes through a 390 ohm DIN 8 pin Male series resistor to the cathode Each port re 1 2 turn comes directly from the anode The bi gt 1 phase tach inputs share the same return 3 5 The two TTL level GPI outputs are driven
87. ntium I 90 MHz processor e An available COM port See USD Serial Port Requirements on page 2 for details 2 Universal Slave Driver USD Serial Port Requirements Pro Tools MIX MIXplus and Pro Tools 24 Systems The USD must be connected to the DigiS erial Port on the Digidesign MIX or d24 card if multiple use the card in the lowest slot USD with the G3 and G4 Under certain circumstances for example when running the USD Setup utility appli cation the USD must be connected to a conventional serial port Many MIDI de vices as well as Digidesign s MachineCon trol option also require connection to a conventional serial port Since Power Mac intosh G3 and G4 computers do not con tain a conventional serial port where con nection to a conventional Macintosh serial port modem or printer port is called forin this guide you will need to utilize one of the following adaptors Stealth Serial Port made by GeeTh ree com This adaptor supports firmware updating of the USD gPort Serial Adaptor made by Griffin Technology This adaptor supports firm ware updating of the USD USB Twin Serial Adaptor model USA 28x made by Keyspan This adaptor does not support firmware updating of the USD Pro Tools Ill Systems The USD must be connected to the mo dem or printer port or equivalent serial port adaptor USD Setup USD Setup requires its own connection from the USD to your computer for remote cont
88. o system 1 Select Video System VIdEo SY using the Set Down and Up switches 2 Press the Set switch again The LED Time Code Display will switch to display one of the two parameter values e NTSC n75C r e PAL PAL 3 Use the Down and Up switches to switch between the parameter values 4 When you have chosen your desired op tion press Set The LED Time Code Display will return to showing time code numbers The USD will retain the setting even when the unit is powered off and on again until it is changed MTC Idle Mute MTC is output constantly whenever the USD is generating time code Optionally this constant output can be set to mute when time code LTC is idle id To mute idle time MTC output from the front panel C 2 1 Use the front panel Set Up and Down switches to display Idle MTC IdLE 7C 2 Press Set to display the current state On or Off 3 Press Up or Down to turn Idle MTC off 4 Press Set again to exit and return USD to its previous state For USD Setup instructions for Idle MTC see MTC Output and Idle Muting on page 51 Managing and Selecting Video Inputs The USD has two independent video in puts referred to as Video In and Video Ref on USD s rear panel These let you use one of the video inputs as a Clock Refer ence the resolver sample clock master ref erence and use the other input for working with VITC time code and the character ge
89. ommended setting 7 Use the Down and Up switches to scroll through the parameter values When the desired line pair value is displayed press Set 8 Using the Positional Reference switch se lect Generate 9 Set the time code start time See Gener ator Start Time on page 46 for instruc tions 10 Arm the destination VTR to record video so that VITC can be inserted into the video signal and be recorded on the desti nation videotape 11 Make sure that your chosen clock refer ence is actually present and running then press the USD Run switch The time code addresses will begin to incre ment Chapter 4 Using the USD 49 To pause or stop VITC from the front panel m Press and release the Run Stop Clear switch when you want to pause or stop the generating process To generate VITC Internally using USD Setup 1 Ensure that the USD is connected in line with a video source and video destination 2 Ensure that VITC Insertion Enabled is se lected in the USD Setup window and that you have selected the appropriate format NTSC or PAL 3 If necessary select onto which line pair you ll be generating VITC using the VITC Generate Lines pop up menu 4 Select the appropriate clock reference us ing USD Setup s Clock Ref selector 5 From the Positional Ref selector select Generate 6 In the Generator Bi Phase Preset win dow type in the desired time code start time in Hrs Min Sec Frm To reset to 00 00
90. onal reference 42 technical signal information 70 black burst 11 house sync 20 BNC 34 back panel 20 terminator for Video Ref Thru 20 Cc character generation see Window Dub clock reference and resolving 32 choosing digital source 33 front panel LEDs 17 front panel switch 17 selecting a clock source 32 USD Setup 23 Color for window dub 53 Connected to USD 24 D DASH 34 DAT signals 69 DB 25 20 DF LED 19 DigiSerial Port 2 8 digital AES EBU Word Super 69 clock reference front panel 56 clock setting 33 Down switch 29 drop outs and auto switch LTC VITC 69 and time code freewheel 39 LTC tips 67 F factory defaults reset 65 fader start and GPI wiring 88 overview of 63 using 63 wiring instructions 88 FCC 75 fields odd even indication 23 Index 89 firmware updating USD 14 flatbed and Bi Phase Tach 35 fps 23 frame edge 63 frame rate configuring front panel 31 front panel switch 19 USD Setup 23 freewheel duration 24 and auto switch LTC VITC 69 front panel display of 58 front panel Lockout mode 29 switches and displays 17 G G3 and port connections 8 generate time code gen regen 44 Generator Bi phase Preset 25 controls 18 controls for 29 Preset Mode 45 Reference Rule 45 Running 24 Generator Parameter Controls 29 GPI and fader start 63 back panel connector 20 pinout 82 TTL wiring 88 GPI opto Inputs 83 H house sync connecting 11 Idle MTC Enabled front panel 51 in USD
91. oots to establish a common sync reference be tween a film or video camera with a porta ble 1 4 analog ATR such as those made by Nagra or Stellavox On location Pilot Tone is derived by clock referencing the camera to the local AC line frequency which is 60Hz or 50Hz depending on the country of origin and this same frequency is then used to clock reference the ATR The result is that both the camera and the ATR will run at the same speed You can think of Pilot Tone as a kind of in expensive and readily available house sync for location production Increas ingly it s being replaced by time code since new generation film cameras as well as many portable DAT recorders are time code capable Please note that Pilot Tone contains no po sitional information it is simply a clock reference Most 1 4 inch machines have a center track for time code or pilot Appendix A Additional Synchronization Information 71 72 Universal Slave Driver appendix b Technical Specs General Nominal Sample Rates 44056 Hz Pull Down 44100 Hz 44144 Hz Pull Up 47952 Hz Pull Down 48000 Hz 48048 Hz Pull Up Frame Rates 30 fps frames per sec ond 30 fps drop frame 29 97 fps 29 97 fps drop frame 25 fps 24 fps Variable Speed Override 699 cents 58 25 Limited to absolute sample rate limits of 35 0 kHz and 50 0 kHz Appendix B Technical Specs 7
92. ory Hold from the front panel 1 Using the Set Down and Up switches select Pitch Hold PICH HLd JITU wie 4 3 p Y i VI BO PI Be 2 Press the Set switch again The LED Time Code Display will switch to display one of the two parameter values e On On or e Off OFF 3 Use the Down and Up switches to switch between the parameter values Using USD Setup m Click Pitch Memory Enabled When you have chosen your desired op tion press Set The LED Time Code Display will return to showing time code numbers The USD will retain the setting even when the unit is powered off and on again until changed 38 Universal Slave Driver Positional References Positional Reference relates to the USD time code readers and generator and to the Bi Phase reader Whereas the clock connections and Clock Reference setting serve to keep your sys tem s components all operating at exactly the same rate over time the Positional Ref erence is the facility for working with a par ticular time address The Positional Reference setting serves to place the USD into a reading or generating mode While in a reading mode time ad dresses may be obtained from LTC VITC or Bi Phase While in the generate mode the USD simultaneously generates LTC VITC and MTC Positional Reference and Bi Phase Tach Time code and positional reference are not al ways directly synonymous In this guide the terms are used
93. ote control from a sup ported Macintosh or Windows computer USD Setup provides access to all USD pa rameters For a listing of USD parameters supported in each method see USD Controls in Pro Tools USD Setup and Front Panel on page 28 Chapter 4 Using the USD 27 USD Controls in Pro Tools USD Setup and Front Panel USD Controls in Pro Tools USD Setup and the Front Panel Available from in Parameters Pro Tools Front Panel USD Setup Firmware Update Clock References yes Peripherals Sync all Session Setup no all except Video In versus Video Ref in yes Positional References Sample Rates all Session Setup all Session Setup all Frame Rates all Session Setup LTC Output level Freewheel duration no yes Session Setup Video Format NTSC PAL no VITC Read Lines VITC Generate Lines VITC Insertion Enable Pitch Memory Window Dub all Peripherals Sync on off only Bi Phase Tach no yes Gen Bi Phase Preset GPI Generator no Bi Phase yes yes VSO yes Session Setup Pull Up Down Idle MTC Enabled yes Session Setup no yes yes 28 Universal Slave Driver About Remote Only Mode USD Setup Only When the default Remote Only Mode Front Panel Lockout is enabled in the USD Setup Preferences window none of the USD front panel switches will be oper
94. out To MIDI Interface La MIDI Interface Digidesign Universal Slave Driver SSe 80400908 9180 MIDI MTC outputs Connecting the USD MTC output to a MIDI Interface input Pro Tools and MTC Pro Tools does not receive MTC from the USD through its connection to the USD Mac Serial or PC Serial port see Connect ing USD to a Computer on page 7 The signal does not include standard MIDI time code but is instead a high quality propri etary time code signal designed for Pro Tools Therefore a MIDI Interface is only required with Pro Tools version 4 1 or earlier Additional MIDI Requirements Macintosh based systems using Pro Tools version 4 1 or earlier will also need to de fine an OMS device for the USD so that it can provide MTC to other OMS compatible devices See Configuring OMS on page 15 for further instructions Software Installation The following sections provide software in stallation instructions for different Pro Tools systems and standalone opera tion r The location and availability of all parame ters is explained in Control Options on page 27 Pro Tools MIX MIXplus and Pro Tools 24 Systems a Check to make sure you have already in stalled the most recent USD options for your system from your Pro Tools Installer CD ROM or the Digidesign Web site Optionally USD Setup can be installed to provide access to the complete set of USD parameters and provide remote
95. put gain 3 dBu Pitch Hold Off Bi Phase Pulse per frame 0100 Bi Phase Signal A Lead B Video System Format NTSC NTSC PAL Idle MTC Enabled On Window Burn options Enabled Size Large Vertical Position 20 from Bottom Horizontal Position Center Color White on Black background Variable Speed Offset VSO Off Chapter 5 Additional Operational Information 65 66 Universal Slave Driver Additional Synchronization Information Video and VITC Signals Black Burst and House Sync A black burst signal is essentially a posi tion less video signal As with any shared video signal you 1l want to en sure that your video feed comes from a properly buffered and distributed source such as a video distribution amplifier or the video reference black burst output of another device in the house sync chain Resolving to video instead of house black There are several reasons why you would resolve the USD to a video signal rather than house sync When House Sync is Unavailable Resolve to a video signal whenever you are synchro nizing Pro Tools or other device to video and you either e do not have a black burst generator 0r e your setup includes equipment that lacks house sync black burst input and syn chronization capability including con sumer grade VCR or some entry level PC based editing systems Simple Setups In a modest setting with one or two VTRs Pro Tools a
96. quire one of these cables If you choose to use a longer cable be sure it supports hardware handshaking A sche matic for these cables can be found in Appendix C Wiring Diagrams Pin Assign ments Chapter 2 Installing the USD 7 Pro Tools MIX MIXplus or Pro Tools 24 Systems Macintosh and Windows To connect the USD to a Macintosh or Windows Pro Tools MIX MIXplus or Pro Tools 24 system 1 Make sure the power is switched off for both the USD and the computer 2 Connect one end of the cable to the USD port labelled Mac Serial whether using a Macintosh or a Windows computer 3 Connect the other end of the cable to the DigiSerial Port on your primary Pro Tools MIX or d24 card the Core card Mac Serial to DigiSerial Por gt Pro Tools Audio Interface cables Connecting USD to a DigiSerial Port 4 Restore power to the USD and restart your computer 8 Universal Slave Driver USB Blue and White G3 G4 Example a Connect the USD Mac Serial port to the DigiSerial port Connect MachineControl optional to a GeeThree Griffin or Keyspan serial port adaptor see USD Serial Port Require ments on page 2 If using MIDI connect a MIDI interface or HUI to a GeeThree or Griffin serial port adaptor see USD Serial Port Require ments on page 2 DigiSerial Port General Info Pro Tools MIX and d24 cards feature a DigiSerial Port Though this port is ident
97. r ence data after an external source is inter rupted or stopped Also referred to as Time Code Freewheel in Pro Tools 9 Video Format Indicates the format NTSC or PAL for both the incoming and outgoing video sig nals NTSC is used in North and South America Japan and certain other parts of the world PAL is used in most of Europe Asia and Af rica Users of SECAM video for France Rus sia and certain other parts of the world should select PAL 10 VITC Read Lines Determines which line pair of incoming video signal is used for the VITC source When set to Auto the USD will search for the first valid line pair automatically Alter natively this value can be set to specific VITC line pairs 11 VITC Generate Lines Determines the line pair of the outgoing video signal onto which the USD inserts VITC Normally this should be left at the default and preferred setting of 14 16 12 VITC Insertion Enabled When selected VITC will be inserted into the outgoing video signal assuming that a video signal is present at a USD video in put and that the USD is in a valid mode for inserting VITC The only invalid positional reference modes are VITC or Auto Switch LTC VITC The USD can t read VITC and generate new VITC at the same time 13 Pitch Memory Enabled When selected the USD will remain at a pitch sample rate that corresponds to the last known incoming time code speed When deselected the U
98. r 85 to 264 volts 47 to 63 Hz auto switching Connector IEC Standard AC Power Cable 3 conductor USD Setup Software The following is an overview of the USD Setup application for Macintosh and Windows System and installation require ments for USD Setup can be found in Soft ware Installation on page 13 Using Help To activate Help a From the Help menu choose the Show Help command or click on the question mark button in the upper right corner of the USD Setup window To deactivate Help a From the Help menu select the Hide Help command or click on the question mark button in the upper right corner of the USD Setup window Overview of USD Setup Controls The following section identifies each con trol of USD Setup Details on configuring parameters can be found in Chapter 4 Using the USD USD Setup Status 00 00 00 00 mmm Speed Calibration Clock Ref _Internal YS0 y Connected To USD Sample Rate 48000 e Positions rer Generate LTC Ouiat Level gt Video Format Dub Window O Window Enabled VITC Read Lines se uma A O y Vertical Position _20 From Bottom E ITC Insertion Enabled Horizontal Position Center v J C Pitch Memory Enabled Color White on Black Bkgnd w p Bi phase Tach Parameters Input Signals Bi phase Fwd A leadsB w Pulses Per Frame 2 254 100 Set PPF Idle MTC Enabled p Generator Bi phase Hrs Min Sec Fr
99. rence video feed from a black burst or colorbar generator to the Video Ref input and use this input as your Clock Reference whenever you want sam ple clocks locked to video Using Video Inputs with VITC and the Character Generator Unlike selecting a video input to use for Clock Reference you don t have freedom to arbitrarily choose which input to use for VITC and character generator functions The rule defining which video input is used for VITC and character generator functions is simple and is explained in the following sections and in Figure 3 If the Clock Reference is one of the two video inputs and the Positional Reference is Generate then VITC and character gen erator functions are applied to the video ar riving at the Video Ref input connector This helps you avoid re patching video ca bles whenever you want to stripe a video tape with your reference black burst or color bars along with internally generated time addresses for VITC and or LTC and or CG dub window In Figure 3 this scenario is identical to Route A Video Routing Video Ref In Video In LTC AES EBU Word Clock Super Clock Pilot Tone g Bi phase Tach o I Clock Reference Setting Time Code and Window Dubbing Video routing is automatically switched within the Universal Slave Driver according to the Positional Reference and Clock Reference settings Route A Positional Reference Generat
100. resolve Pro Tools USD to external AES EBU Word Clock or Super Clock From Pro Tools m Select the appropriate digital clock refer ence from the Clock Reference pop up in the Pro Tools Session Setup window Using the front panel controls 1 Press the front panel Clock Reference switch to select Digital as the clock refer ence 2 Press Set 3 Press Up or Down until Digital Reference dI6 rEF is displayed in the LED 1E dib F 4 Press Set again The LED Time Code Dis play displays the current digital reference which will be e AES EBU AES E8U or e Super Clock 256 CLOC or e Word Clock I CLOC 5 Use the Down and Up switches to select the desired digital clock EE LI 6 When the desired option is displayed press Set Using USD Setup a Select the appropriate Digital clock refer ence option from the Clock Ref pop up menu If the chosen clock reference source is un available or the current configuration is not valid the Locked LED on the far right of the USD front panel will flash Additional Digital Clock Information AES EBU The USD AES In connector only recognizes and uses the clock portion of an incoming AES EBU audio signal All audio information will be ignored and will not be passed to the USD AES Out connector Chapter 4 Using the USD 33 Word Clock 1x Word Clock is a digital clock reference signal that runs at 1x sam ple rate which is the same rate as the clock signal carried
101. rol of the USD Macintosh A serial port modem or printer or equivalent serial port adapter is re quired for USD Setup Macintosh USD Setup does not work if the USD is con nected to a DigiSerial Port Windows A COM port connection is re quired for USD Setup Windows USD Setup does not work if the USD is connected to a DigiSerial port USD Standalone without Pro Tools If you are not using Pro Tools but using the USD in standalone mode no USD to CPU connection is required unless you need to do any of the following Use the USD for Variable Speed Override VSO Configure Window burn parameters Control the USD with USD Setup If you do not connect USD to a CPU you will use the USD front panel to access and edit parameters See Control Options on page 27 for details USD Standalone with Remote Control For software remote control using the USD Setup application see USD Setup on page 3 USD Cables USD Serial Cable A USD Serial cable is in cluded to connect the USD to a Macin tosh or Windows based Pro Tools DigiSerial Port Pro Tools MIX MIXplus or Pro Tools 24 systems This cable can also be used to connect the USD to ra Macintosh serial port or equivalent serial port adaptor Windows USD Setup on Windows requires a standard 9 pin to 25 pin modem cable to connect the USD to a COM port on any supported Windows computer This cable is available from Digidesign through your Digidesign
102. ront panel 1 Use the front panel Set Up and Down switches to display Idle MTC IdLE 7C 2 Press Set to display the current state On or Off 3 Press Up or Down to toggle Idle MTC to the Off setting 4 Press Set again to exit and return USD to its previous state To mute idle time MTC output using USD Setup 1 Launch USD Setup 2 Deselect the Idle MTC Enabled option Idle MTC muted Se Idle MTC controls in USD Setup Generating a Window Burn The USD offers time code character genera tion also known as window burn or dub bing This superimposes onto a video sig nal a small area called a window dub or window burn or time code window that displays time code in hours minutes sec onds frames i u g e EA 101 05 36 00 Video image with window burn Chapter 4 Using the USD 51 A window dub can be very helpful for any one involved in audio for picture since it gives you an instant visual cue as to where you are in time When working with Pro Tools for in stance you can use a window dub to help locate a particular video frame that has been cued by the director for a particular sound effect Or if you re using Pro Tools and you want to spot a region to the same video frame at which you ve paused your videotape you can enter the time code reading you see in the window dub into the Auto Spot dialog This is especially useful if your only time code reference from the tape is LTC as Auto
103. rtion VI7C In5 using the Set Down and Up switches 3 Press the Set switch again The LED Time Code Display displays one of the two pa rameter values On or OFF 4 Use the Down and Up switches to switch between the parameter values 5 Press Set to select VITC Insertion 6 Make sure you have selected the appro priate format NTSC or PAL depending on your project For instructions see Video Format System on page 60 7 Use Set Up and Down to access the VITC Generate Lines 6En LInE parameter Press the Set switch again The default line pair is14 16 which is also the SMPTE recom mended setting 8 Use the Down and Up switches to scroll through the parameter values and select a new VITC line pair if necessary When you have chosen your desired line pair press Set The LED Time Code Display will return to showing time code numbers 9 Select valid clock and positional refer ences The USD will now regenerate VITC and in sert it onto the video signal as soon as it re ceives a valid positional reference signal To regenerate VITC based on an external positional reference using USD Setup 1 Ensure that the USD is connected in line with a video source and video destination 2 Ensure that VITC Insertion Enabled is checked in the USD Setup window and that you have selected the appropriate for mat NTSC or PAL 3 Use the VITC Generate Lines menu to configure the line pair if necessary 4 Select th
104. s the Down or Up switches until the LED Time Code Display shows LTC Gain L7C 6Aln 4 Press the Set switch again The LED Time Code Display will now show the current parameter value for LTC Gain in dBu val ues 5 Press the Down or Up switches to scroll through the available parameter options Values will scroll in 3 dBu steps Hold down either Down or Up to fast scroll 6 When the desired parameter value is dis played press the Set switch again With just a few exceptions these steps re main the same for all USD parameters For a complete listing of all the front panel Generator Parameter controls see Chapter 5 Additional Operational Informa tion Example 2 Standalone Sample Rate Configuration The following is an example of abbreviated front panel instructions this time showing how to set the USD sample rate To set the USD sample rate from the front panel 1 Press Set then scroll using the Up and Down switches to display SPL FrEc 2 Press Set again then use the Up and Down switches to scroll through available sample rates shown in the LED display See 4 Sample Rate LEDs on page 18 for more information about USD sample rates and displays 3 When the required rate is displayed press Set to confirm it as the current USD sample rate Sync Setup This section describes how to configure the USD for the specific requirements of your system or current project Instructions are organized by
105. see Software Config uration for Pro Tools and USD on page 14 4 Follow the instructions on screen to complete the update To update USD firmware using USD Setup 1 Make sure the USD is connected to the computer as explained in USD Setup on page 9 2 Choose Preferences gt USD Preferences 3 Click Update USD Firmware 4 Follow the instructions on screen to complete the update Configuring OMS Macintosh Only If you are notusing the USD Mac Serial port to connect USD to a DigiSerial Port or CPU serial port then you will need to define an OMS device for Pro Tools so that Pro Tools can receive MTC from the USD This ap plies only to Pro Tools 4 1 and earlier An OMS device is not required for the USD to output MTC A OMS should not be configured for any USD specific purposes whenever the USD Mac Se rial port is connected to a DigiSerial Port or Macintosh serial port Doing so would dupli cate and adversely affect timing information between the USD and your computer already provided through the Mac Serial port This section assumes you have a basic working knowledge of OMS or FreeMIDI and their operating conventions including connecting MIDI interfaces creating docu ments configuring drivers and defining and connecting MIDI devices If you need to review this information refer to your OMS or FreeMIDI documentation Chapter 2 Installing the USD 15 OMS settings for the USD 1 Create a new d
106. selected clock refer ence LOCKED flashes if the selected clock reference source is missing or out of lock able frequency range Speed Cal Speed Calibration This yellow LED indicates when all output clocks are at a frequency that corresponds with the cho sen sample rate Speed Cal flashes when ever there is a mismatch between the cho sen sample rate and the actual output sample rate For example if the Clock Reference is set to LTC and being fed by LTC from an analog tape that is running somewhat off speed this indicator will flash quickly if too fast or slowly if too slow The Speed Calibra tion LED will be lit steadily only if the out put clock remember USD is generating an output clock from incoming LTC is within 0 025 250 parts per million of the cho sen sample rate If the speed is greater than 0 025 the indicator will flash quickly if the speed is less than 0 025 the indica tor will flash slowly Relatively new professional ATRs should be able to play back with a speed deviation of less than 0 025 Some ATRs even when calibrated properly may not run accurately enough to allow the Speed Calibration to remain lit without flashing The Speed Calibration LED compares ac tual output sample rate to desired sample rate This LED does not reflect the speed of motion of the chosen Positional Reference However it would bear a relationship to the Positional Reference if both Positional Reference a
107. t Level TTL 3 3 V typical Appendix B Technical Specs 77 Rear Panel Connectors Connector BNC Female Level 0 to 5 V low 2 0 to 6 0 V high Connector BNC Female Super Clock Out Level TTL 3 3 V typical Connector BNC Female Bi phase Tach Connector 25 pin D subminiature female DB25 GPI Pilot Bi phase Tach In Frequency Range O to 76 8 KHz Level 4 5 to 5 5 V opto isolated Current 10 mA max Polarity bi phase Both inputs are software programmable Polarity tach Direction polarity is software programmable Modulo Range 2 thru 254 Pilot In Level 100 mV to 5 5 V p p differential Frequency Range 50 60 Hz nominal Impedance 200K ohms 78 Universal Slave Driver Rear Panel Connectors Description Four opto isolator inputs returns Level 4 5 to 5 5 V Current 10 mA max Frequency Frame rate max Latency Half frame max GPI Out TTL Description Two TTL level outputs Level TTL 3 3 V typical Current 15 mA Frequency Frame rate max Latency Half frame max GPI Relay Description Four pairs of SPST contacts normally open Load while switching 5 A max at 200 VDC Load continuous 1 5 A max at 200 VDC Operate Release Time 1 ms Repetitio
108. task and cover Pro Tools front panel and USD Setup control proce dures as supported A complete list of con trol options for each method can be found in USD Controls in Pro Tools USD Setup and Front Panel on page 28 For clock reference instructions see Clock References on page 32 For Positional Reference instructions see Positional References on page 38 To utilize Generate Regenerate modes see Generating and Regenerating Time Code on page 44 For window burn instructions see Gen erating a Window Burn on page 51 Frame Rate Settings If using Pro Tools the USD frame rate will follow the session frame rate setting in the Session Setup window The USD frame rate can be also set from the front panel To set the USD frame rate from the front panel m Press the FRAME RATE switch to cycle through available frame rates A lit DF LED indicates drop frame Chapter 4 Using the USD 31 Clock References When used with an external clock refer ence the USD functions as a resolver so that Pro Tools and other devices can be synchronized or resolved to a common clock source Selecting a Clock Source To choose a clock reference from Pro Tools m Choose Display gt Session Setup Window then select a setting from the Clock Refer ence pop up menu Iq E 44100 internal 00 00 00 00 analo 30 FPS Generate Time Code Time Code Freewheel Sample Rate Pull Up Down usi
109. the device s AES EBU output to the USD s AES EBU input oO DAT oO OOM o AES out AES in SE 6 9008 As SRO Connecting the USD to an AES EBU device To supply AES EBU clock reference from the USD Connect the USD AES ABU output to the AES EBU input on a DAT machine or other digital device Connecting MIDI Devices The USD MTC Out port provides MTC de rived from conversion from LTC VITC and Bi Phase or MTC generation to syn chronize MTC compatible consoles se quencers lighting systems and other de vices The MTC output from the MTC Out always matches the time code address displayed on the USD front panel 12 Universal Slave Driver OMIS Pro Tools and the USD When a CPU is connected to the USD Mac Serial port Pro Tools does not need any ad ditional connections to facilitate MTC sync or communication it is handled through the proprietary Mac Serial to DigiSerial Port or modem printer port connection With Pro Tools 4 1 and earlier a MIDI In terface and OMS were required for Pro Tools to recognize the USD as a ge neric synchronization device If you need to supply MTC from the USD to another MTC compatible device connect the device as described below To connect an MTC compatible device to receive MTC from USD Connect the USD MTC Out port to the appropriate MIDI input on the device using a standard MIDI cable MTC
110. top 5 TTL Record Logical GPI numbers O through 3 are asso ciated with GPI relay outputs O through 3 pins 3 through 10 GPI numbers 4 and 5 are associated with GPI TTL outputs 0 and 1 pins 1 and 2 88 Universal Slave Driver GPI TTL Wiring The circuit can drive approximately 2 mA through a load of 1 6K and maintain a logic high level of 3 3V In an application where the equipment being controlled has more demanding power requirements an exter nal buffer or relay circuit mst be used This would typically be constructed as part of a custom electrical interface Each GPI TTL output is fully short circuit protected via a 220 ohm series resistor Before attempting to wire any type of cus tom interface always check the electrical specifications provided by the equipment manufacturer including voltage levels current loading and polarity Incorrect wiring may damage your equipment your USD or cause personal injury Numerics 14 16 VITC line pair 48 1x 69 256x 22 69 9 pin connectors 22 A absolute time code and LTC 39 AC Mains Power Switch 17 AC Power In 22 AES EBU choosing as clock reference 33 connecting 12 In 21 Out 22 Agency Compliance FCC 75 Auto Switch 41 and freewheel duration 69 B back panel 20 Bi Phase Tach 20 42 70 controls in USD Setup 25 for mag flatbed projectors 35 front panel display of 60 GPI Relay Outputs diagram 83 GPI Pilot pin assignments 86 input wiring diagram 82 positi
111. upon the following Genera tor Reference rule Generator Reference Rule If the Clock Reference is set to Internal LTC Pilot Tone Bi Phase Tach Digital AES EBU Digital Super Clock or Digital Word Clock then the time code genera tor will lock to the selected clock reference 0r If the Clock Reference is set to one of the two video inputs Video Ref In or Video In then the time code generator will reference the Video Ref In connector 24 fps and Frame Rate Restrictions 24 FPS cannot be used as the USD time code format when the Positional Reference is set to Generate and the Clock Reference is either one of the two video inputs Furthermore under these same conditions if the video format is set to NTSC only 29 97 FPS and 29 97 DF FPS may be chosen as the time code format and if the video format is set to PAL only 25 FPS may be chosen as the time code format These restrictions are removed when not in Generate mode Chapter 4 Using the USD 45 Pro Tools Systems Pro Tools provides controls for virtually all USD generator controls Instructions for basic SMPTE or MTC generating can be found in the Pro Tools Reference Guide Spe cial instructions for any situations are in cluded in the following sections See Control Options on page 27 for de tails on the USD control access Generator Start Time To set the generator start frame from Pro Tools Configure the Session Setup windo
112. uter System Requirements Macintosh Pro Tools Systems e Digidesign qualified Macintosh com puter e 17 inch or larger color monitor e A Pro Tools MIX MIXplus or Pro Tools 24 system or e A Pro Tools III system Serial port requirements vary depending on the type of Pro Tools system See USD Serial Port Requirements on page 2 for details Windows Pro Tools Systems e Digidesign qualified Windows NT com puter e A Pro Tool MIX MIXplus or Pro Tools 24 system Chapter 1 Introduction 1 USD Setup Macintosh and Windows USD Setup provides standalone software control of the USD and firmware updating capabilities USD Setup can be used with or without Pro Tools for complete control of all USD features In order to use USD Setup you must have the following An available serial or Com port Macin tosh and Windows respectively USD Setup is not available when the USD is connected to a DigiSerial Port Minimum Macintosh Requirements for USD Setup 68K and Power Macintosh computers re quire Mac OS version 7 5 or higher Beige G3 Macintosh computers must run OS 8 5 or higher e At least 2 MB of available RAM e Virtual Memory must be turned off in the Macintosh Memory Control Panel An available serial modem or printer port or equivalent USB converter See USD Serial Port Requirements on page 2 for details Minimum Windows Requirements for USD Setup e Windows NT 4 0 or Windows 98 e A Pe
113. video signal that you are applying to the USD As another example in Gener ator Preset Mode Positional Reference Generate a clock reference of Internal is not a good choice simply because the USD s internal crystal runs asynchronously with respect to the supplied video signal and thus repeated or skipped frame ad dresses are sure to eventually occur MTC Generation Regeneration MTC MIDI Time Code is a serial digital signal In many ways you can think of it as an inaudible type of LTC that can be used by various MIDI devices MTC is available from the USD MTC Out connector which is a standard DIN style 5 pin female MIDI connector To use MTC you ll need to connect MTC Out to a MIDI In connector of a device that can recognize and use MTC Typically this would be a console sequencer synthesizer or sampler keyboard a drum machine or other device MTC Output and Idle Muting MTC is normally output whenever LTC is output Whenever LTC output stops USD will continue to output MTC in bursts of one frame every 200 milliseconds This al lows any connected MIDI reading device to be continuously updated as to the posi tion of VITC or Bi Phase either of which might be operating at slow or still speeds Thus you can still use a connected MIDI device for Auto Spotting from VITC or Bi Phase Optionally this constant output can be set to mute when time code LTC is idle To mute idle time MTC output from the f
114. w as appropriate for your system and the cur rent project Refer to the Pro Tools Reference Guide for specific instructions To set the generator start frame from the front panel 1 Select Set Gen SE7 6En using the Set Down and Up switches 3E i BbEn L 1 2 Press the Set switch again One of the time code fields displayed will be flashing 3 To lower or raise the currently flashing parameter press the Down or Up switch Hold down either switch to scroll down up 4 To set a time code setting and advance to the next field press and release the Down and Up switches simultaneously 5 Repeat until you have finished setting the USD to the desired generator start time 46 Universal Slave Driver When you are done press the Set switch again The USD will retain the setting even when the unit is powered off and on again until it is changed LTC Generation Regeneration Regenerating LTC The USD will regenerate LTC whenever the external positional reference is moving at normal 1x forward speed 10 Make sure LTC is correctly routed as ex plained in Chapter 2 Installing the USD In addition be sure to check and adjust the level of the USD LTC output signal if nec essary See Example 1 Using Set Down and Up to adjust LTC Gain on page 30 for instructions If necessary adjust the input level for the destination device To regenerate LTC using Pro Tools a In the Session Setup window select any exter
115. will update dynamically to re flect the current state The Fader Start channel must be in a Show Track state not hidden Refer to GPI Relay Wiring for Fader Start on page 88 for additional GPI information Chapter 5 Additional Operational Information 63 Calibrating the USD Oscillator The USD provides a feature for calibrating the frequency of the on board crystal oscil lator This allows USD to be used as an ex tremely accurate frequency reference while in Internal VSO mode With normal usage the USD should never require recalibrating Each unit is factory calibrated to within 5 ppm parts per million You may want to recalibrate the USD in the following situations If greater than 5 ppm accuracy is re quired If the unit needs to be matched to a unique nonstandard frequency To precisely compensate for component aging To restore the original factory setting Oscillator recalibration does not occur dur ing firmware updating or when resetting the USD to factory defaults see Restoring Fac tory Settings on page 65 Oscillator Resolution and Stability The USD calibration units are in 1 64th of a sample period What this means is that the USD can theoretically be calibrated to about 1 3 of a ppm The unit will maintain calibration across a wide range in tempera ture Long term drift should be less than 1 ppm per year due to aging of the crystal To put this in perspective most digita

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