Teac SX-1 Reference Manual - Manual (Page 187)

Part VIII–Data Entry, System & File Management
TASCAM SX-1 Reference Manual
187
VGA Clock Settings Tab
This screen is where you set the SX-1’s clock set-
tings. If you wish to have the SX-1 communicate
with other digital audio devices, you must have the parameters on this tab set correctly. From the
MAIN
DISPLAY MODE
, press
SETTINGS/ PREFS
, then
click on the
Clock Settings
tab.
Cur., Prim., and Sec. The SX-1 can set up two
different clock master scenarios, displayed as
Primary
and
Secondary
, utilizing any of the available I/O on the
left side of the screen. If the first clock source is not
available (
PRIM.
), it will automatically shunt to the
next available clock source (
Sec.
). If the clock source
selected as
Secondary
is not available, the SX-1 will
shunt to
Internal
clock and mute its output to let you
know something is wrong.
Internal This displays the SX-1’s internal clock
state.
Word Clock In This displays the sample rate of
data coming in the SX-1’s rear panel
WORD CLOCK
IN
jack.
An added feature for this and the following I/O clock
displays is the error readout. Any variance from the
normal sample rate detected in the clock stream will
be shown in -/+ percentages, which can be an impor-
tant tool when troubleshooting clock errors.
ADAT In This register displays the clock rate of the
audio coming in the SX-1’s stock Lightpipe™ optical
ports (on the unit’s rear).
Digital In 1 & Digital In 2 This register dis-
plays the clock rate of the audio coming in the SX-
1’s stock SPDIF Digital In 1 and 2 jacks (on the
unit’s rear).
Video This displays the clock rate of the data com-
ing in the SX-1’s stock video sync ports (on the unit’s
rear).
Slot 1 Input 1 to Slot 3 Input 3 These regis-
ters display the clock rate of the audio coming in the
option cards installed in the SX-1’s expansion slots.
Auto Retry Knowing that the SX-1 can switch to
another clock source if the Primary selection
becomes unstable, this setting determines whether or
not the master clock will be switched back to Pri-
mary if that clock again becomes stable.
MANUAL RETRY Pressing this soft key causes
the SX-1 to manually search for a valid clock on the
Primary selection’s port.
Mixer Sample Rate This pull-down tab sets the
desired sample rate for the SX-1’s mixer. If the
desired mixer sample rate differs from the selected
clock master, the
SAMPLE RATE
indicators on the
slanted front panel will flash.
Word In Setup There is no industry standard for
word clock polarity; this field lets you choose to use
the rising edge or the falling edge of the word stream
when syncing to external word.
Word Out Setup Determines whether the SX-1
outputs word clock that is referenced to the rising
edge or falling edge of its own clock reference.
Video Pull Up/Down Use this tab when the SX-
1 is syncing to an external souce that is pulled up or
pulled down. These settings are used when syncing
to timecode (generally produced from film) that is
running at a different rate from the standard. In gen-
eral, pull ups and pull downs are only used in certain