User guide

664 User Guide and Technical Information

Jam Menu

The Setup Menu option TIMECODE/SYNC > Jam Menu displays the timecode Jam Menu. This special

screen displays detailed information about the 664’s internal SMPTE timecode generator and SMPTE

timecode present on the 664’s time code input.

External timecode value

External timecode frame rate

Internal timecode value

Internal timecode frame rate

The difference between external and internal timecode.

External user bits

Internal user bits

To jam the 664’s internal timecode to external time code, push the Headphone Controller while the

Jam Menu is displayed. To leave the Jam Menu without jamming to external timecode, press the Menu

Bu on or the Meter Bu on.

F Sampling Rate Modes

48.048k and 48.048kF

The 48.048kF mode (F stands for fake, faux, Fostex—take your pick) is a speciﬁ c compatibility mode

for use with the Fostex DV40 software (1.74 and previous), Avid, Final Cut Pro, and other post-pro-

duction environments that do not recognize audio ﬁ les wri en at 48.048 kHz. In this mode ﬁ les are

recorded at a 48.048 kHz sampling rate but are stamped at 48 kHz. When played, they will play back

0.1% slower than real time.

One use for the 48.048kF mode is to force a 0.1% speed reduction (pull down) of audio to match MOS-

telecined ﬁ lm (24 fps-to-NTSC) in non-linear edit systems, such as Avid or Final Cut Pro. Since the ﬁ le

is stamped as a 48 kHz ﬁ le, the edit system will play it back at 48 kHz and not at 48.048 kHz. This “au-

dio pull down” will match the transferred picture without the need for an intermediate step through

other software to create the pull down.

The time code frame rate (actual recording rate) is forced to 30 ND in 48.048kF mode. The LCD display

will show 30 ND during recording. No other frame rate is available in 48.048kF mode.

The audio ﬁ le, however, is stamped with a 29.97 ND frame rate, along the 48 kHz sampling rate. It will

appear as if the ﬁ le was originally recorded at a 48 kHz sampling rate at a TC rate of 29.97 ND.

Fostex DV40

When using ﬁ les recorded in the 48.048kF mode with a DV40 with early software, set the DV40 time

code frame rate to 29.97ND. Time code stamps will properly match the original time code start times.

47.952k and 47.952kF

Both 47.952 and 47.952kF se ings use a record sampling rate of 47.952 kHz, 0.1% lower than 48 kHz.

The 47.952kF mode, however, identiﬁ es the ﬁ le as being recorded at 48 kHz. Additionally there are