Fostex VR800 owner manual Before Starting, Time Base

VR800 Owner’s Manual (Before Starting)

Before Starting

This chapter describes some basic items that you need to know before you start operating the VR800.

All users, including those who are familiar with using tape-based multitrackers and those who are new to multitrackers, should read this chapter thoroughly to understand the functions of the VR800.

1.Time Base

2.Recording method and REMAIN indicator

3.Managing songs by Program Change function

4.Real tracks and Additional tracks

5.Input monitoring and playback monitoring

6.Audio file and Event

Time Base

The word “Time Base” appears frequently in this manual. The concept of Time Base is similar to a “tape counter” on a conventional tape-based multitracker in that it indicates the precise position of the recorder transport section (the current position).

The VR800 offers three types of Time Base: ABS (Absolute type), MTC (MIDI time code), and BAR/BEAT/CLK (bar/ beat/clock). ABS indicates an absolute time on the disk. MTC indicates a relative time that is obtained by adding a certain value (MTC offset value) to the ABS value. BAR/BEAT/CLK indicates the position in a song created in the internal Tempo Map according to MIDI clock and Song Position Pointer. The following diagrams depict the relationship among these three types of the Time Base.

ABS 0			DISK END
00M, 00S, 00F
	00M, 08S, 00F	REC END	23H, 59M, 59S

ABS

BAR/BEAT/CLK

BAR = 001BAR, 0404

TEMPO=001BAR, 1 , 60

MTC

MTC OFFSET=01H, 00M, 00S, 00F

MTC OFFSET MODE=ABS

(This shall be assumed to be the MTC OFFSET time set for the ABS 00M, 00S, and 00F positions.)

-002 BAR, 1 , 00 CLK 001 BAR, 1 , 00 CLK

01H, 00M, 00S, 00F 01H, 00M, 08S, 00F

00H, 59M, 52S, 00F 01H, 00M, 00S, 00F

00H, 59M, 59S

00H, 59M, 51S

MTC

MTC OFFSET=01H, 00M, 00S, 00F

MTC OFFSET MODE=BAR

(This shall be assumed to be the MTC

OFFSET time set for the 00 BAR, 1 recorded area and 00 CLK positions.)

non recorded area

You can switch between these three types of Time Base to suit your purpose. (Refer to the explanation in “Display Section” on page “17” for more information on switching Time Base.)

Note: As shown in the figure, the ABS 0 position (top of the disk) is [-2BAR, 1BEAT, 00CLK] (Time Base - BAR/ BEAT/CLK). You can change this position in the range of -9 BAR to -2 BAR in the “Setting the time signature” menu. Refer to the “Setting the time signature menu” section on page 91.

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