Tascam RC-898 owner manual Checking the offset, Clock selection, Output timing, Relative

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Section 7.2 - Unit-related functions

2)Use the RIGHT key to move the cursor to a second “invisible” field to the right of the frames field. The display will appear as follows:

M a c h i n e O f f s e t

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A U T O O F F S E T

1) From menu group E, move the cursor to either

Abs Diff (absolute) or Rel Diff

(relative).

There is no need to press SELECT here.

2)The appropriate difference value will be displayed on the bottom line of the display screen.

3)Locate the two tapes (master and slave) so that they have the right offset.

You can play up the tapes and pause them once they have been lined up, or carry out the next step while either or both of the tapes is being replayed.

4)Press either the UP or DOWN key at the correct offset time to capture and store the offset.

NOTES

The value entered in this way can be edited later using the technique described above.

Offsets cannot be set from unformatted tapes, nor if either tape is displaying a negative ABS value.

7.2.5 Checking the offset

The offset of a slave DTRS unit relative to its mas- ter may be checked (“absolute” difference), as well as the difference (if any) between the intended offset and the actual offset (“relative” difference). In practice, usually there will be no difference between the intended and actual offset, resulting in a relative difference of zero.

As an example, consider the following:

A slave machine has its offset set to +00:10:00:00, and while chasing, the two machines’ tape counters read as follows:

Master 10:15:12:12

Slave 10:05:12:08

Here, the difference between the master and the slave times (the “absolute difference” is now 00:10:00:04, and this is what is shown if we exam- ine the absolute difference.

However, the result of subtracting the intended offset from the absolute difference is 4 frames, and this is the “relative difference”, which may also be examined as described below:

7.2.6 Clock selection

The word clock (as opposed to the timecode clock source) of a DTRS unit is usually selected using the CLOCK key on the front panel. However, the RC-898 can be used to select the input clock.

•In ABS time mode, the clocks of all DTRS units will be set together, following the setting of the first machine in the chain.

•However, as explained below in 8.1.11, “Inde- pendent clock settings”. they can also be set independently.

1)From menu group 9, move the cursor to Clock, and press SELECT:

C l o c k

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I n t

2)Use the UP and DOWN keys to select between Int and Word and (in the case of SY-88- equipped DA-88s and DA-98 units) Video.

7.2.7 Output timing

88On the DA-88, regardless of whether an SY-88 synchronizer board is fitted or not, there is a facil- ity to use either Digital or Analog output mode for exact synchronization when dubbing between DTRS units, etc.

Note that while it is possible to output both digital and analog signals simultaneously, there two sets of signals will be out of sync with each other.

1)From menu group 9, move the cursor to OutputTim (output timing) and press

SELECT:

O u t p u t

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Contents RC-898 For U.S.A Connections Table of Contents IntroductionRC-898 features Menu and basic operationsTimecode functions Table of Contents Making settings on the Dtrs unitsExternal control and settings Menu and parameter referenceIntroduction Key featuresKey features UnpackingBattery backup Precautions and recommendationsPrecautions and recommendations Digital audio cablesAccessories AccessoriesReference clock in a digital studio Accessories RC-898 features Front panel Vari indicators Machine number indicators Through 6, E1, E2Lock Status indicators Time Mode indicatorsRepeat key and indicator Preset keyData INC/DEC key and indicator Front panel ENTER/LOAD keyRear Panel Rear Panel DIP switches 1 ContrastConnection to Dtrs units ConnectionsConnection to Dtrs units Machine IDsConnections parallel units Connections parallel unitsConnections RS-422 Units Connections GPI event unitsMemory and batteries Memory and batteriesMemory and batteries Navigation Menu and basic operationsNavigation Invalid operationsSetting values using the Value display Resetting values to zeroFast setting of values Data entrySelecting the unit controlled by the menus Commonly-used menusRecalling menus using the function keys Storing and recalling user setupsStoring and recalling user setups Saving the current setupRecalling a user setup or restoring factory settings Storing and recalling user setups Selecting the unit to which operations refer Basic Dtrs operationsTransport controls Formatting tapesMonitoring Shuttle modeMonitoring Arming tracksShuttle monitoring Shuttle mutingMonitoring Monitoring flowchart Monitoring Monitoring tables DA-88 and DA-38Monitoring Location functions Setting the precisionSetting a relative time reference Reference modesSelecting Time Mode ABS settingABS setting Return-to-zeroLocation operations Setting the location pre-roll valueLocation operations Auto playStoring the location in a memory Manual entry of a location pointEditing a location Recalling a location memoryRepeated entry of location points Repeating a sectionRepeating a section Editing a location memoryPunch operations Setting pre-roll and post-roll times Rehearsing the punch recordingCrossfade times Performing the punch recording Punch operations Track operations Making settings on the Dtrs unitsTrack delay Track operationsUnit-related functions Key ModeUnit-related functions Rec Mute functionChasing with an offset Auto Offset functionOutput timing Checking the offsetClock selection From menu group E, move the cursor to eitherWord length Varispeed pitch controlInput selection DitherMeter modes Unit-related functions Confidence modeReference levels Sine oscillatorN e O s c i l l a t o r C h i n e Unit-related functions Primary timecode functions Timecode functionsPrimary timecode functions Selecting the timecode sourceSetting the generator start time Selecting a timecode typeRewind the tape to the beginning Checking the generator progressRecording the timecode on a Dtrs timecode track Start the timecode sourceChasing to external timecode Chasing with a timecode offsetAdvanced timecode functions Independent clock settingsAdvanced timecode functions Auto Timecode Offset functionSynchronization of timecode Error bypassRechase mode Pull up and pull downFast LTC Midi Timecode outputPark position Individual recording status while chasing timecode Video resolvePlay the master unit D e o R e s o l v e C h i n e O f f E e Advanced timecode functions External control and settings Controlling the parallel port deviceControlling GPI devices Selecting the serial port device Controlling the serial port 9-pinControlling the serial port 9-pin Location pre-roll on the serial unitControlling recording operations on the serial unit Split mode on the serial unitSerial unit timing source Use the UP and Down keys to select between Split and NormalChoosing a control protocol Other Dtrs control functionsOther Dtrs control functions Track mapping functionsRemote track arming Recording delayTimecode track mapping Device emulationFast wind speed Cue-up tallyMMC ID D I / B u s I D C h i n e C e i v e Other Dtrs control functions Menu and parameter reference Menu groups Menu groupsMenu group GPI Time value to Timecode type Output All parameters On, off 7, Midi Time Fast wind mode Menu group a Menu group EMenu group F Alphabetical list of menu items Alphabetical list of menu itemsSpecifications DimensionsSpecifications Dimensions Index A-E DtrsIndex F-O ABS 6-2,8-2Index P-T Index U-Z Generator 8-1,8-2,10-5,10-6RC-898
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