Section 6.1 - Reference modes

6 – Location functions

The RC-898 can store and recall up to 100 loca- tion memory positions, allowing you to find key points in a recording project easily.

The contents of location memories (timecode val- ues) are displayed on the LOCATE TIME/VALUE LED display [15], and the number of the current location memory is displayed on the MEMORY NO. 2-digit LED display [14].

6.1 Reference modes

Before proceeding with an explanation of the way in which location operations are carried out, it is necessary to examine the way in which times are displayed on the RC-898.

The RC-898 can use one of three time reference modes to show the tape times of the DTRS units connected to it, as shown on the timecode indica- tors [12]: ABS, REL and TC.

ABS refers to the absolute time, as determined from the servo track of the DTRS tape.

TC refers to timecode read from the timecode track of the DTRS unit. However, since the RC- 898 does not accept timecode directly, this need not be actual timecode, but in the case of a DA-98 or DA-88, may be pseudo-timecode, “synthe- sized” from the ABS values (see 8.1.2, “Synthe- sizing timecode from ABS times”).

REL refers to the time value, relative to a user- defined reference point (see 6.3, “Setting a relative time reference”).

Cue points may be set “on-the-fly” or entered manually, and copied from a cue list. All cue points may be edited and “trimmed” to frame accuracy.

For faster entry and editing, cue points may optionally be displayed and edited to second accu- racy, ignoring the “frames” field.

6.2 Setting the precision

The RC-898 typically displays to frame-based precision (although in fact, the location and syn- chronization is to sample precision).

However, it is not always necessary to work to this degree of accuracy, and you may want to save a

little time by ignoring the “frames” field when entering and locating to location memories.

NOTE

The location and synchronization accuracy is not affected by this function.

Accordingly, the RC-898 provides you with a way to do this:

1) From the F menu group, move the cursor to FrameDisp and press SELECT:

F r a m e D i s p l a y

on

2)Use the UP or DOWN key to change from on to off.

When frame display is set on, the last two digits of the display will be used for the frames field of location memories, and the RC-898 expects frames to be entered as part of time values. When set to off, the frames field is ignored (i.e. always assumed to be zero).

6.3Setting a relative time reference

This operation is equivalent to pressing the “reset” button on a numerical tape counter to set the value to “0000”. When the RC-898 is in relative mode, the time shown on the TAPE TIME display [13] becomes relative to a zero point which you set. This zero point is referenced to the first DTRS unit in the chain.

1)From the F menu group, move the cursor to DispTime and press SELECT:

D i s p l a y T i m e

A b s o l u t e

2) Use the UP or DOWN key to change Absolute to Relative.

The REL indicator [12] will light to show that the RC-898 is now displaying times in relative mode.

6-1

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Tascam RC-898 owner manual Location functions, Reference modes, Setting the precision, Setting a relative time reference