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  S Y N C H R O N I Z A T I O N   W I T H   T H E   A V

121

the results in the last column for when pull down 
occurs are the same for 44100 Hz (for which the 
pull down rate is 44,056 Hz):

* The MIDI Timepiece AV internally operates at 29.97 non-drop (nd) when its 
MASTER SYNC setting is set to one of its three video modes and, at the same time, 
the LCD frame rate is currently set to 30.

Video lock-up time

At the moment the MTP AV first receives video 
signal, it immediately gen-locks and then takes 
several seconds to “settle in” while it adjusts its 
phase-lock loop to the new video signal. During 
this brief period, there is a possibility — depending 
on your digital audio hardware and the nature of 
any audio you may be playing back — that you 
might hear a slight wavering in the audio for a few 
seconds. To avoid this, give yourself 5 or 10 seconds 
of preroll in any situation where video is starting 
up for the first time.

The above-mentioned brief period of phase-lock 
adjustment does not occur when you are feeding 
blackburst (house sync) to the MTP AV because 
the video signal is continuous. (It never stops and 
starts.) In this case, the MTP AV remains 
continuously phase-locked to video, and then 
simply engages as soon as LTC is received — with 
no subsequent period of adjustment. This scenario 
will provide the best results.

Getting faster lock-up when slaving to a VTR

If you are not using blackburst and are instead 
slaving directly to a video deck (VTR), you can 
shorten — and practically eliminate — the above-
mentioned period of phase-lock adjustment by 
doing the following:

1

Use the MTP AV to stripe LTC onto your video 

tape while gen-locked to video. (Make sure that the 
MTP AV’s MASTER SYNC mode is set to 
INTERN/VIDEO.)

This ensures that the LTC will be frame-locked (i.e. 
LTC won’t drift out of sync with video frames.) The 
MTP AV is ideal for striping frame-locked LTC. 
(See “Striping frame-locked LTC onto video” on 
page 127 for details about this.)

2

When you are done striping and are ready to 

lock to the video, set the MTP AV’s MASTER 
SYNC mode to LTC and lock to LTC only (without 
video genlock).

This will provide stable, frame-accurate synchro-
nization, along with rapid phase lock. If you aren’t 
using ADATs or any other digital audio devices, 
you can even use QuikLock mode to make lock-up 
even more responsive.

Recording digital audio while locked to video

When you record digital audio with video as the 
time base, the MIDI Timepiece AV SMPTE format 
should be set to 29.97 (either drop-frame or non-

MTP AV
Master sync
setting

Word 
clock
setting

SMPTE
format
setting

Actual
incoming
time base

Actual
word clock
output

LTC

48K

30

30 fps

48000

LTC

48K

30

29.97 fps

47952 (pull 
down)

LTC

48K

29.97 
nd

29.97 fps

48000

LTC

48K 
up

30

29.97 fps

48000

LTC

48K 
dn

29.97 
nd

29.97 fps

47952 (pull 
down)

Video 
(NTSC)

48K

30*

Video 
(29.97)

48000

Video 
(NTSC)

48K

29.97 
nd

Video 
(29.97)

48000

Video 
(NTSC)

48K 
dn

30*

Video 
(29.97)

47952 (pull 
down)

Video 
(NTSC)

48K 
dn

29.97 
nd

Video 
(29.97)

47952 (pull 
down)

!USB Interfaces Manual Book  Page 121  Tuesday, October 10, 2000  12:43 PM

Содержание micro express-USB

Страница 1: ...C M Y CM MY CY CMY K...

Страница 2: ...orkmanship for a period of NINETY 90 DAYS from the date of original retail purchase This warranty applies only to hardware products MOTU software is licensed and warranted pursuant to separate written...

Страница 3: ...usiness fax 617 576 3609 Tech support fax 617 354 3068 Tech support email techsupport motu com Web site http www motu com MOTU USB MIDI Interfaces User s Guide for Windows MIDI Timepiece AV USB MIDI E...

Страница 4: ...thetypeofpowersourceindicatedonthemarkinglabel Ifyouarenotsureofthetypeofpowersupplytoyourlocation consultyourlocalpowercompany 8 Power CordProtection Power supplycordsshouldberoutedsothattheyarenotli...

Страница 5: ...ro Express Console 51 Using MIDI Express XT Console 71 SMPTE Synchronization 77 MIDI Machine Control PartIII ForMTPAVUsers 83 Using MIDI Timepiece AV Console 101 Using the Front Panel LCD 117 Synchron...

Страница 6: ...IV USB Interfaces Manual Book Page iv Tuesday October 10 2000 12 43 PM...

Страница 7: ...All Users PartI ForAllUsers USB Interfaces Manual Book Page 5 Tuesday October 10 2000 12 43 PM...

Страница 8: ...All Users USB Interfaces Manual Book Page 6 Tuesday October 10 2000 12 43 PM...

Страница 9: ...Power cord USB cable CD with software drivers Manual Product registration card MIDI CABLES NOT INCLUDED To connect each of your MIDI devices to your MOTU MIDI interface you need MIDI cables purchased...

Страница 10: ...P A C K I N G L I S T A N D C O M P U T E R R E Q U I R E M E N T S 8 USB Interfaces Manual Book Page 8 Tuesday October 10 2000 12 43 PM...

Страница 11: ...TU MIDI interface put the Type A plug into a Type A USB jack on the computer a USB hub or any other USB device connected to the computer that has an available Type A USB jack The USB cable allows the...

Страница 12: ...DI interfaces do not require that you use the same numbered MIDI IN and MIDI OUT for each device but experience shows that your system will be easier to work with if you do Connecting additional gear...

Страница 13: ...suggestion If you have more than a few pieces of gear connected to your MOTU MIDI interface jot down which device is connected to each input and output in the worksheet below MIDI IN MIDI OUT 1 1 2 2...

Страница 14: ...own in Figure 2 5 For information about recording time code tracks see Striping SMPTE on page 73 Figure 2 5 Connecting a SMPTE time code source Connecting a SMPTE time code destination Connect the SMP...

Страница 15: ...to MIDI see Programming Pedal A to convert an audio click on page 112 On a MIDI Timepiece AV only PEDAL A on the rear panel can be used for click to MIDI conversion Figure 2 8 Connecting an audio clic...

Страница 16: ...standard video tape recorder VTR to distributed house sync blackburst If your video source is aVTR of some kind the video signal from theVTR will need to be distributed to both the MIDI Timepiece AV...

Страница 17: ...IDI Timepiece AV can serve as a Digidesign Pro Tools superclock 256x word clock sync master device providing sample accurate phase lock for any Pro Tools system Like word clock super clock allows you...

Страница 18: ...CD display For details see the next section Making the NET port setting After you have connected the Macintosh you need to tell the MIDI Timepiece AV that a Mac is connected to its NET port To do so 1...

Страница 19: ...ing back and recording MIDI For further details about USB visit www usb org To connect multiple MOTU interfaces to a computer you ll need an inexpensive device called a USB Hub purchased separately fr...

Страница 20: ...I N S T A L L I N G Y O U R M O T U I N T E R F A C E 18 USB Interfaces Manual Book Page 18 Tuesday October 10 2000 12 43 PM...

Страница 21: ...ndows Start menu under Programs MOTU WHERE TO GO NEXT Where you go next depends of course on what you would like to do If you want to learn the front panel controls Turn to the chapter below that appl...

Страница 22: ...I N S T A L L I N G T H E M O T U U S B M I D I D R I V E R A N D C O N S O L E S O F T W A R E 20 Installing Software Page 20 Tuesday August 28 2001 4 55 PM...

Страница 23: ...OTU USB MIDI PORTS Once you have installed the MOTU USB MIDI driver you ll notice that all MIDI inputs and outputs are available to your MIDI programs The port names are abbreviated as shown below in...

Страница 24: ...e the console to make adjustments or simply check the current settings during your Windows session SLAVING A SEQUENCER TO SMPTE To slave a sequencer to SMPTE time code via a MOTU MIDI interface just c...

Страница 25: ...ns such as these It only handles MMC transport functions like playing stopping and locating For MMC record functions theMOTUinterfaceservesonly ameans of passing on MMC record commands from your seque...

Страница 26: ...S M P T E S Y N C A N D M M C W I T H A W I N D O W S S E Q U E N C E R 24 USB Interfaces Manual Book Page 24 Tuesday October 10 2000 12 43 PM...

Страница 27: ...XT Micro Users PartII ForXT MicroUsers USB Interfaces Manual Book Page 25 Tuesday October 10 2000 12 43 PM...

Страница 28: ...XT Micro Users USB Interfaces Manual Book Page 26 Tuesday October 10 2000 12 43 PM...

Страница 29: ...be configured any way you wish and they can be stored in the interface hardware itself for later recall SELECTING A PRESET ON AN EXPRESS XT To select a preset from the front panel 1 If you have a MID...

Страница 30: ...via your Express interface This preset avoids this problem by not sending data to the port that has the same number For example MIDI IN port 3 routes data to all MIDI OUT ports except MIDI OUT number...

Страница 31: ...e MIDI outputs MIDI outputs 5 and 6 are reserved for MIDI Machine devices as these ports are programmed to receive MIDI Time Code and MMC transport commands from the micro express MIDI inputs 3 and 4...

Страница 32: ...as described in the next section to modify and save the user preset in your Express interface itself Optionally you can also save it on your computer hard disk WORKING WITH PRESETS IN EXPRESS CONSOLE...

Страница 33: ...You don t need to run the console at all in this case You only need to use the console if you want to program user presets to suit your specific needs Familiarity with Windows In explaining how to use...

Страница 34: ...mputer The Setup list The Setup combobox on the toolbar always indicates the currently selected Setup in the Micro Express Clicking on the combobox drops down the list of other available Setups Altern...

Страница 35: ...ng the bottom of the main Console window This is the status bar where notification and progress messages will be displayed from time to time while the Console performs its various functions In additio...

Страница 36: ...port where all MIDI real time and MIDI Time Code messages will arrive regardless of where the Micro Express received them from All other received data will arrive at the other input ports as appropria...

Страница 37: ...tly represented in the layout of the MIDI Routing window The MIDI data flow proceeds from left to right MIDI inputs or sources are represented on the left by the input port and clock for MIDI Time Cod...

Страница 38: ...lso quickly route a single source to more than one destination Do this by holding down the Shift key while you drag Each destination you move the mouse over will automatically be connected with the dr...

Страница 39: ...he computer MIDI data received on inputs 1 through 4 will always show up at Micro Express s MIDI driver input ports and you can always send MIDI data to output ports 1 through 6 No port to port routin...

Страница 40: ...ons The Transport Out and Transport In icons provide routing of MIDI Machine Control MMC transport commands to and from the Micro Express itself For example if you would like to send MMC transport com...

Страница 41: ...Filter window is divided into two sections The upper section contains filter settings for channelized MIDI messages those that are sent on a particular MIDI channel such as note or Pitch Bend message...

Страница 42: ...d to filter the MIDI Timing Clock messages being generated by a drum machine connected to input 1 MIDI Timing Clock messages are from a general class of MIDI messages called real time messages All rea...

Страница 43: ...change all events being received from input 1 on channel 1 to channel 5 Since this remapping happens before the routing to output 3 see Micro Express MIDI processing on page 33 the messages received...

Страница 44: ...e without stopping or pausing and continuing to convert a continuous uninterrupted stream of frame times based on the time code to which it first locked Turn on Frame lock when you want the Micro Expr...

Страница 45: ...ll begin at the frame entered in the Start time field LTC output These options control the SMPTE time code LTC output from the SMTPE jack on the rear panel of the Micro Express The frame Format option...

Страница 46: ...ess is successfully locked to a time base internal LTC or MTC and that it is also successfully converting SMPTE time code Play green arrow This status indicator means that the Micro Express is generat...

Страница 47: ...ou want to control a MMC device from your computer you have two choices 1 bypass the Micro Express s MMC features 2 or send the MMC transport commands to the Micro Express instead and have it redistri...

Страница 48: ...in the new name and click Write Saving user Setups and banks to disk Use the commands in the File menu to save a single Setup or a Setup bank all eight user Setups as a file on disk Just choose Save S...

Страница 49: ...o the event sequence 6 Repeat from the fourth step until all desired messages have been inserted into the list Now each time the Micro Express senses the pedal being depressed it will send messages on...

Страница 50: ...snare drum signal can be converted into a MIDI note message used to trigger another percussion sound in a drum machine or sampler This feature can be used for many other purposes too Here are a few i...

Страница 51: ...ry adjusting the decay and threshold That s all there is to it When an audio click occurs the Micro Express will send the specified message to the destination outputs connected to the Pedal source in...

Страница 52: ...U S I N G M I C R O E X P R E S S C O N S O L E 50 USB Interfaces Manual Book Page 50 Tuesday October 10 2000 12 43 PM...

Страница 53: ...lly access any of the input or output ports on the MIDI Express XT Just run your sequencer You don t need to run the console at all in this case You only need to use the console if you want to program...

Страница 54: ...ed Setup in the MIDI Express XT Clicking on the combobox drops down the list of other available Setups Alternately you may pressAlt P to activate the list and display the other Setups Figure 7 3 The S...

Страница 55: ...ogress messages will be displayed from time to time while the Console performs its various functions In addition another feature of the Console uses this area for displaying ExpressHelp ExpressHelp co...

Страница 56: ...input port where all MIDIrealtimeandMIDITimeCodemessageswill arrive regardless of where the MIDI Express XT received them from All other received data will arrive at the other input ports as appropria...

Страница 57: ...eniently represented in the layout of the MIDI Routing window The MIDI data flow proceeds from left to right MIDI inputs or sources are represented on the left by the input port and clock for MIDI Tim...

Страница 58: ...also quickly route a single source to more than one destination Do this by holding down the Shift key while you drag Each destination you move the mouse over will automatically be connected with the d...

Страница 59: ...computer MIDI data received on inputs 1 through 8 will always show up at MIDI Express XT s MIDI driver input ports and you can always send MIDI data to output ports 1 through 8 No port to port routin...

Страница 60: ...other forms of SMPTE provide a more stable time base The Transport Out and Transport In icons The Transport Out and Transport In icons provide routing of MIDI Machine Control MMC transport commands to...

Страница 61: ...ts have filter settings and each port s settings is independent of the others A port s Filter window is divided into two sections The upper section contains filter settings for channelized MIDI messag...

Страница 62: ...d to filter the MIDI Timing Clock messages being generated by a drum machine connected to input 1 MIDI Timing Clock messages are from a general class of MIDI messages called real time messages All rea...

Страница 63: ...change all events being received from input 1 on channel 1 to channel 5 Since this remapping happens before the routing to output 3 see MIDI Express XT MIDI processing on page 53 the messages receive...

Страница 64: ...e without stopping or pausing and continuing to convert a continuous uninterrupted stream of frame times based on the time code to which it first locked Turn on Frame lock when you want the MIDI Expre...

Страница 65: ...gin at the frame entered in the Start time field LTC output These options control the SMPTE time code LTC output from the SMTPE jack on the rear panel of the MIDI Express XT The frame Format options 2...

Страница 66: ...s XT is successfully locked to a time base internal LTC or MTC and that it is also successfully converting SMPTE time code Play green arrow This status indicator means that the MIDI Express XT is gene...

Страница 67: ...essages If you want to control a MMC device from your computer you have two choices 1 bypass the MIDI Express XT s MMC features 2 or send the MMC transport commands to the MIDI Express XT instead and...

Страница 68: ...the new name and click Write Saving user Setups and banks to disk Use the commands in the File menu to save a single Setup or a Setup bank all eight user Setups as a file on disk Just choose Save Setu...

Страница 69: ...o the event sequence 6 Repeat from the fourth step until all desired messages have been inserted into the list Now each time the MIDI Express XT senses the pedal being depressed it will send messages...

Страница 70: ...ss XT the snare drum signal can be converted into a MIDI note message used to trigger another percussion sound in a drum machine or sampler This feature can be used for many other purposes too Here ar...

Страница 71: ...lso try adjusting the decay and threshold That s all there is to it When an audio click occurs the MIDI Express XT will send the specified message to the destination outputs connected to the Pedal sou...

Страница 72: ...U S I N G M I D I E X P R E S S X T C O N S O L E 70 USB Interfaces Manual Book Page 70 Tuesday October 10 2000 12 43 PM...

Страница 73: ...ings in your MOTU interface via Express Console software See chapter 6 Using Micro Express Console page 31 or chapter 7 Using MIDI Express XT Console page 51 for details LOCKING YOUR EXPRESS INTERFACE...

Страница 74: ...f missing or unreadable frames in the SMPTE time code it freewheels past them pretending that they were not missing by briefly generating its own code to make up for the missing frames The default fre...

Страница 75: ...c window in the MTP AV Console software 3 Set the master sync mode in the Sync window to Internal 4 If you are recording time code on a tape deck and your tape deck has dbx noise reduction be sure to...

Страница 76: ...mode in several significant ways In LTC mode your Express interface Emits regenerated LTC on its SMPTE OUT jack Analyzes incoming time code and responds in several useful ways depending on what happen...

Страница 77: ...al track into your Express interface and record the fresh code onto a new track Be sure to start from the beginning so that you regenerate the entire length of the original track When your Express int...

Страница 78: ...rom your Express interface to the computer and if necessary control your Express interface from your computer software via MIDI Machine Control as demonstrated in Figure 4 4 on page 22 If you absolute...

Страница 79: ...e and your computer software or hardware MMC controller serves as your MMC transport control master The MMC controller sends play stop start and locate commands to your Express interface and all other...

Страница 80: ...xpress users or Figure 7 9 on page 58 for Express XT users For most MMC devices that support being an MMC slave routing time code either MTC as just discussed or LTC to them is all you need to do For...

Страница 81: ...interface exists as shown in Figure 6 18 on page 45 for micro express users and Figure 7 18 on page 65 for Express XT users by the synchronization master setting and its master sync mode is set to In...

Страница 82: ...d to control everything from either Cakewalk Pro Audio or the CuePoint This setup allows you to use either one interchangeably as your transport master controls without having to change any settings w...

Страница 83: ...MPT AV Users PartIII ForMTPAVUsers USB Interfaces Manual Book Page 81 Tuesday October 10 2000 12 43 PM...

Страница 84: ...MPT AV Users USB Interfaces Manual Book Page 82 Tuesday October 10 2000 12 43 PM...

Страница 85: ...ly access any of the input or output ports on the MIDI Timepiece AV Just run your sequencer You don t need to run the console at all in this case You only need to use the console if you want to create...

Страница 86: ...ns from your computer The Setup List The Setup combobox on the toolbar always indicates the currently selected Base setup in the MIDI Timepiece AV Clicking on the combobox drops down the list of other...

Страница 87: ...t the rest of the toolbar Sync display see Toolbar sync display on page 97 ExpressHelp You ll also notice a bar along the bottom of the main Console window This is the status bar where notification an...

Страница 88: ...uts are available to your MIDI programs Figure 10 6 MIDITimepiece AV ports in Cakewalk Pro Sync port You ll also see several other special sets of MIDI Timepiece AV ports besides the normal input and...

Страница 89: ...simply check the current settings during your Windows session MIDI ROUTING WINDOW The MIDI Routing window is the control center for routing and processing MIDI data with your MIDI Timepiece AV Althou...

Страница 90: ...c to abort the changes The names you enter for the ports will be displayed and remembered in the Console MIDI routing Routing is as simple as dragging a source icon with the mouse and dropping it on a...

Страница 91: ...reen connection will disappear if you do this Likewise routing a single channel from a source to a destination constitutes a connection and this will be reflected on screen as well Removing all routin...

Страница 92: ...ike to send MIDI Time Code from the MIDI Timepiece AV to devices connected to its MIDI Out ports create a connection from the Sync Out icon to the desired devices as shown in Figure 10 9 Figure 10 9 T...

Страница 93: ...hat these MMC connections involve MMC transport commands only For MMC record functions play enable punch in etc use the regular MIDI routings and for MMC software use the appropriate Windows MIDI driv...

Страница 94: ...ur desired message filtering as explained below in Figure 10 13 Figure 10 13 A red X means data will be filtered A green check mark means the data will not be filtered A hatched out box indicates that...

Страница 95: ...channels As with the filter settings each port can be configured to have independent channel remapping settings The MIDI Timepiece AV defaults to no channel remapping meaning channel 1 maps to channel...

Страница 96: ...via the Sync MIDI input port If you are new to SMPTE synchronization If you are not familiar with the process of synchronizing with SMPTE time code see Appendix B SMPTE Synchronization Basics page 145...

Страница 97: ...o stop converting altogether if there are jumps in incoming time code Turningoff Framelockcanbealifesaverif youfind yourself in a situation where you have time code on tape orothersource buttheframelo...

Страница 98: ...that will be generated These option are grayed if any master mode other than Internal is chosen This is because in all other cases the MIDI Timepiece AV is merely reading and matching the timecode be...

Страница 99: ...time code Stable but not locked This status indicator displayed in the MIDI Timepiece AV front panel LCD as JAM means that the MIDI Timepiece AV has been successfully locked to external SMPTE time cod...

Страница 100: ...kHz e g 48 000 kHz It allows you to measure how accurate external time base sources are such as video or LTC It is also affected by the sample rate settings in the MIDI Timepiece AV so it can help you...

Страница 101: ...ovides eight Base Setups setups which you can configure any way you wish Modifying a setup To modify a setup 1 Select one of the eight setups from the Setup list in the toolbar 2 Make any changes you...

Страница 102: ...U S I N G M I D I T I M E P I E C E A V C O N S O L E 100 USB Interfaces Manual Book Page 100 Tuesday October 10 2000 12 43 PM...

Страница 103: ...haracter back lit display With the LCD and four front panel knobs and the Enter button you can control just about every capability in the MIDI Timepiece AV If you re curious see A few things the LCD c...

Страница 104: ...dow MIDI Timepiece AV LCD Window Structure BASE SETUP IMPORT EXPORT MTP 1 only appears with networked MTP 1 PATCH SELECT GLOBAL HARDWARE SETUP MIDI DATA DUMP SYNC MODIFIER USE BASE SETUP MAC SPEED MAS...

Страница 105: ...NOB START STEP SIZE ROUTING BY CABLE MUTING PARAMETERS INPUT CHAN NEL REMAP POLARITY or THRESHOLD DECAY RANGE ROUTING BY CHANNEL OUTPUT CHAN NEL REMAP RANGE or CLICK TO MIDI OUTPUT DATA ASSIGN MENT OU...

Страница 106: ...that asks you to save settings that you have made and you do not want to save the changes turn theWINDOW knob to exit the window and cancel the operation Using the knobs to control the LCD Here is ho...

Страница 107: ...the previous section 2 Make any changes you like to the base setup by using any other windows in the LCD You can select modifiers change cable routings or anything you want 3 Use the WINDOW knob to g...

Страница 108: ...se setups or NONE no base setup 4 Turn the CURSOR knob one click to the right to the USE MODIFIER window 5 UsetheVALUEknobtoselectadesiredmodifier or to select NONE You can assign up to four modifiers...

Страница 109: ...et the MMC device ID s for each Make sure the ID s are different Running Status By default the MIDI Timepiece AV uses running status on its output cables as prescribed by the MIDI specification Runnin...

Страница 110: ...description of the current state of the MIDI Timepiece AV at the time of the bulk dump not including modifiers and base setups other than the current base setup To initiate the bulk dump press ENTER R...

Страница 111: ...he current time base either external or internal This display can be very helpful for determining if the SMPTE frame rate settings are correct and if the external time base is both stable and accurate...

Страница 112: ...code Choices are 0 1 2 4 8 16 and 32 frames or I Choose I for infinite jam sync which causes the MIDI Timepiece AV to beginstriping on itsownwhenit encounters adrop out To stop striping in this case...

Страница 113: ...UE knob to set the numbers This is the minimum and maximum value that the pedal will generate PEDAL OUTPUT ASSIGNMENT To select the pedal use the CURSOR knob to go back to the previous window and use...

Страница 114: ...Threshold and Decay The threshold can be set anywhere on a scale from 0 to 70 The audio click must be loud enough to reach the threshold A soft click will require a low threshold Try to set the thres...

Страница 115: ...he SELECT CURSOR andVALUE knobs as follows 1 Turn the CURSOR knob one click to the right to go to the KNOB START STEP SIZE window 2 Use the SELECT andVALUE knobs to set the start value and step size f...

Страница 116: ...lect the input cable and channel that you want to route to an output cable The input and output channel are the same Once you have made your input to output cable choices press YES NO to make or break...

Страница 117: ...powering up the unit Or you can reset it from the front panel LCD as follows 1 Use the WINDOW knob to go to the GLOBAL HARDWARE SETUP window 2 Turn the CURSOR knob all the way clockwise The RESET ALL...

Страница 118: ...U S I N G T H E F R O N T P A N E L L C D 116 MIDI cannon These tasks can be accomplished with MTP AV Console USB Interfaces Manual Book Page 116 Tuesday October 10 2000 12 43 PM...

Страница 119: ...ON The MIDI Timepiece AV handles all three components of synchronization Time base Address Transport control The MIDI Timepiece AV generates a time base a stable accurate measurement of the passage of...

Страница 120: ...ttings in the MTP AV Console software as described in Sync window on page 94 SUMMARY OF SYNCHRONIZATION MODES In total the MIDI Timepiece AV offers seven synchronization modes for its MASTER SYNC sett...

Страница 121: ...e in your studio it won t reach the MIDI device because it will get read and swallowed by the MIDI Timepiece AV What you need to do in this case is have the MIDI Timepiece AV send MTC to the desired M...

Страница 122: ...straightforward by making sure you have the frame rate set to 29 97 either drop or non drop when you are using video If you do the sample rate you see is the sample rate you ll get Here is a chart sum...

Страница 123: ...ctly to a video deck VTR you can shorten and practically eliminate the above mentioned period of phase lock adjustment by doing the following 1 Use the MTP AV to stripe LTC onto your video tape while...

Страница 124: ...I Timepiece AV Please contact Alesis for information about the availability of a ROM update that addresses this issue Please note that this display discrepancy does not occur when the ADAT or ADAT XT...

Страница 125: ...ystem Component Setting for the ADAT sync scenario MTP AV sync mode You can use any sync mode except LTC QuikLock The 2408 system will resolve to the MTP AV even when the AV itself is resolving to SMP...

Страница 126: ...as well If the LOCK and TACH lights do no behave as described the MTP AV is not successfully locking to the SMPTE time code This could be a problem with the audio connections between the tape deck and...

Страница 127: ...hen you stop the tape deck The Freewheel amount can be adjusted up to 32 frames This allows the MIDI Timepiece AV to maintain lockup even over lengthy SMPTE drop outs If you encounter a time code drop...

Страница 128: ...ng time code on a tape deck and your tape deck has dbx noise reduction be sure to defeat the noise reduction on the track you are recording time code 4 Open the SMPTE Controls window in the MIDI Timep...

Страница 129: ...MPTE time code that came from the MIDI Timepiece AV Important note our tests have shown that you willprobablynotgetusableresultsif youattemptto feed video from Deck 2 to the MIDI Timepiece AV You real...

Страница 130: ...drop outs in the old time code so that the new clean code has none Lengthening a SMPTE track If the time code on your SMPTE track ends too early and you need to add more code you can use the One time...

Страница 131: ...MIDI Timepiece AV 3 Set the SMPTE offset starting frame the frame at which you want the sequence to start 4 Put your sequencer into slave mode such that it is waiting for external time code 5 To star...

Страница 132: ...S Y N C H R O N I Z A T I O N W I T H T H E A V 130 USB Interfaces Manual Book Page 130 Tuesday October 10 2000 12 43 PM...

Страница 133: ...AV based studio it doesn t necessarily have to For example video house sync could provide the time base while the MIDI Timepiece AV provides address time code A recommended setup for MMC The best sce...

Страница 134: ...sets the device ID s of all ADATs chained from its ADAT sync port This means that you don t have to do anything in regard to setting the device ID s of your ADATs The factory default ID of the MIDI T...

Страница 135: ...or complete details see Using an Alesis LRC on page 135 Setting up any other MMC transport controller To use any MMC transport controller such as the JL Cooper CuePoint 1 Connect the MIDI OUT and IN j...

Страница 136: ...The MIDI Timepiece AV MMC features do not come into play here For MMC remote control of the record functions on ADATs things are a little trickier USING A THIRD PARTY MMC DEVICE AS A MASTER We recomm...

Страница 137: ...nt In turn the AV which is in INTERNAL sync mode is redistributing MTC to the Akai DR8 and Roland VS 880 hard disk recorders Figure 13 3 When the synchronization slave option is checked MIDITime Code...

Страница 138: ...If you have an LRC unit other than an Alesis or Fostex model and are unsure about its operation with your MIDI TimepieceAV please contact Mark of the Unicorn technical support Button MTP AV Function...

Страница 139: ...desired 44 1K or 48K and set the clock format to DIGI instead of 1X 3 Make the other settings in the SMPTE SYNC menu as desired You can slave your rig toVIDEO LTC MTC or the MIDI Timepiece AV s INTERN...

Страница 140: ...S Y N C H R O N I Z I N G P R O T O O L S W I T H T H E A V 138 USB Interfaces Manual Book Page 138 Tuesday October 10 2000 12 43 PM...

Страница 141: ...Appendices PartIV Appendices USB Interfaces Manual Book Page 139 Tuesday October 10 2000 12 43 PM...

Страница 142: ...Appendices USB Interfaces Manual Book Page 140 Tuesday October 10 2000 12 43 PM...

Страница 143: ...me code format used to compensate for an accumulating timing error in color video Drop Frame skips two frames at the beginning of each minute except every 10th minute as it counts color video frames T...

Страница 144: ...at in the form of a video signal In audio production LTC is often referred to as SMPTE or SMPTE time code sinceVITC is seldom used MIDI Musical Instrument Digital Interface An information protocol dev...

Страница 145: ...ust precisely match the actual elapsed time SMPTE to MIDI Converter A device that reads SMPTE time code from audio or video tape and converts it to MTC or DTL to synchronize MIDI devices to tape Strip...

Страница 146: ...ical blanking segment between frames that describes the location of each video tape frame in hours minutes seconds and frames VITC s audio counterpart is LTC Longitudinal Time Code which is the same t...

Страница 147: ...e lockup between the tape and the sequencer Without synchronization devices with independent time bases no matter how precisely they keep time will inevitably drift apart from one another over time WH...

Страница 148: ...izers in the past have been extremely expensive So the term SMPTE or SMPTE time code has become a common expression for LTC in recording studios post production houses MIDI hardware and software manua...

Страница 149: ...slightly slower than exactly 30 frames per second Over a period of time this difference causes the time code that is counting the frames to fall behind actual elapsed time For example let s say our vi...

Страница 150: ...s the time code on tape is locked to tape or when using SMPTE time code locked to SMPTE HOW DOES A MOTU SYNCHRONIZER WORK All MOTU MIDI interface synchronizers function as a SMPTE to MIDI converter Wh...

Страница 151: ...if you just can t seem to get to the bottom of the problem Starting from the ground up usually either corrects the problem or gives you valuable insight into how to solve it My MOTU interface will no...

Страница 152: ...of the problem This may not enable you to solve the problem at once but will greatly aid in isolating the problem should it reoccur If the problem you are encountering seems inconsistent try to determ...

Страница 153: ...nd hours trying to track down Our technical support telephone line is dedicated to helping registered users solve their problems quickly In the past many people have also taken the time to write to us...

Страница 154: ...A P P E N D I X C T R O U B L E S H O O T I N G A N D C U S T O M E R S U P P O R T 152 USB Interfaces Manual Book Page 152 Tuesday October 10 2000 12 43 PM...

Страница 155: ...mand 32 52 84 File Save bank command 32 52 84 Foot pedal connecting 13 explanation of 47 67 Foot switch connecting 13 explanation of 47 67 Frame lock option 42 62 94 Frame rate 109 explained 146 Frame...

Страница 156: ...ing the LCD 108 SMPTE Controls window 73 129 SMPTE Display 33 53 85 SMPTE Reader in LCD 110 troubleshooting 149 SMPTE synchronization 41 61 94 SMPTE Display 33 53 85 SMPTE Volume Out setting 109 Softw...

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