Tascam DA-98HR Owner's Manual

Also see for DA-98HR: Setup guide Service manual

Contents

Tascam DA-98HR Owner's Manual Manual pdf 64 page image

9 – Operations related to timecode–Chasing to timecode64 TASCAM DA-98HR9.5.5 Using MIDI Time Code (MTC)The DA-98HR can output MIDI Time Code inalmost exactly the same way as it outputs audio time-code, with the following exceptions.MIDI Time Code is only output when the controlprotocol is set to MIDI. See 10.1, “Selecting the con-trol source (protocol)” for details of how to do thisusing menu group 3.MIDI Time Code can be output either when the DA-98HR is playing, or in fast forward or rewind, orwhen stopped. You can turn off the output during the“fast” modes and while stopped, to avoid overloadinga MIDI data stream.1 Go to menu group 7, move the cursor to MTCOut and press ENTER:2 Use the Ó and Á cursor keys to select thefield for which you want to turn MTC on andoff, and the § and ¶ keys to turn MTC on oroff.Note that if the Output field is turnedoff, turning the other fields on will have noeffect.NOTENote that the DA-98HR cannot accept MIDI timecode, andtherefore cannot chase to MTC.9.6 Chasing to timecodeThe following sections describe the operation of theDA-98HR when chasing to external timecode.The operation of the CHASE switch is similar to theway the CHASE switch is used when synchronizingDTRS units (8, “DTRS synchronization”), but in thiscase, the machine ID is not used.9.6.1 Machine ID and timecodeSince a DA-98HR with machine ID set to 1 is alwaysa master unit as regards DTRS sync operation, thereis no need to make any setting on such a machine if itis to be a timecode slave. As long as timecode isreceived at the TIME CODE IN connector (the EXTTC indicator is lit), a unit whose machine ID is set to1 will automatically enter timecode chase modewhen the CHASE key is pressed.However, when a DA-98HR unit has its machine IDset to a value other than 1, there is a conflict when theCHASE key is pressed. You must determine whetherthe chase mode refers to timecode or to the DTRSsync, and this is done using the Time Mode menu(9.1.3, “Selecting TC or ABS timing”). If ABS isselected, when CHASE is pressed, the machine willenter DTRS sync mode, but if TC is selected, themachine attempts to lock to external timecode.When the DA-98HR is in “chase-ready” mode (theCHASE indicator is flashing) and timecode isreceived at the TIME CODE IN connector, the DA-98HR starts to chase the timecode. When it is lockedto the incoming timecode, the CHASE indicatorlights steadily.NOTESThe timecode frame rate used on the DA-98HR mustmatch the frame rate of incoming timecode (9.4, “Selectingthe frame rate”). If they do not match, a warning messagewill be shown, and the DA-98HR will not chase to time-code. You can check the frame rate of incoming timecode(See “Checking external timecode” on page 62.) and of thetimecode recorded on the DA-98HR’s tape (See “Checkingtape TC” on page 58.The timecode used internally by the DA-98HR does nothave to be an actual timecode striped tape. Instead, time-code can be “synthesized” from the ABS subcode timings,as described in 9.2, “Tape timecode mode”.The exact ways in which it chases the timecode andhandles transport functions, etc. are determined by anumber of settings, as described below:9.6.2 Setting timecode offsetYou may enter a timecode offset for the audio fromthe DA-98HR to match the audio (or video sequence)from the timecode master.As with the machine offset (8.4, “Machine offset”),you can either set this manually, entering the num-bers, or set it “on-the-fly” by ear. In either case, oncethe offset has been entered, it can then be edited.The offset can be set to subframe accuracy (1/100thsof 1 frame) or to sample accuracy.M T C O u t p u tO u t p u t F a s t S t o po n o f f o f f