Guide To Setting Smpte Levels; Jam Sync - OPCODE STUDIO 4 Instruction

From the MIDI Format pop-up menu,
choose the MIDI sync format your soft-
ware uses. This pop-up menu duplicates
the Format pop-up menu found in the
SMPTE Reader window. The Studio 4
converts SMPTE timecode into the MIDI
format set in this pop-up menu. The
choices are:
• No Sync: The Studio 4 ignores the
SMPTE input signal. Also, it doesn't
show timecode when striping.
• MTC: The Macintosh uses MIDI
Time Code to read the value of the
SMPTE signal.
• DTL: The Macintosh uses Direct
Time Lock to read the value of the
SMPTE signal.
• DTLe: The Macintosh uses
Enhanced Direct Time Lock to read
the value of the SMPTE signal.
GUIDE TO SETTING SMPTE
LEVELS
Figure 10.6: Setting SMPTE Output Level
Studio 4 Manual
CHAPTER 10: Stripe SMPTE Window
The pop-up Level menu lists eight set-
tings for the SMPTE output level. Choose
one that provides the best input signal for
your particular tape recorder. The follow-
ing guide covers the optimum input levels
for various types of machines. Adjust the
Level command to give a SMPTE input
value closest to the following.
• If your tape machine operates at -10
dB, adjust the SMPTE output level for
a tape input of about -3 dB.
• If your tape machine operates at +4
dB, adjust the SMPTE output level for
a tape input of about -7dB.
• If you are using a -10 dB machine
with LED metering, adjust the
SMPTE output level for a tape input
between -1 and -2 dB.
• If your audio recorder uses dbx noise
reduction and you can't defeat it,
adjust the SMPTE output level for a
tape input between -1 and 0 dB.
• If you have a mixer in the SMPTE
signal path (and you shouldn't), make
sure that the equalization is either
switched out or flat. Any filtering of
the SMPTE signal will render it
invalid.

JAM SYNC

The Studio 4 has a Jam Sync mode. In this
mode, it generates a fresh SMPTE signal
from the SMPTE OUT jack in sync with
the signal received at the SMPTE IN jack.
You should always use Jam Sync mode to
regenerate a SMPTE track when you
copy tapes; a copied SMPTE track may
degrade enough to make it unusable.
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