TEAC HD-P2 HD-P2 Owner's Manual - Page 22

Rate Pull Up/Down, FreeWheel, Jam Sync, Trigger Mode, Trigger on Frame, Timecode Origin

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Timecode Continued from the previous page • 24.00 - This frame rate is used in both film and HDTV systems. • 25.00 - Used for PAL video. • 29.97DF - Standard frame rate for NTSC video with wall time matching the drop-frame video time. • 29.97ND - NTSC video with non-drop encoded frames. • 30.00DF - True 30 frame-per-second rate but with drop-frame encoded LTC. • 30.00ND - 30 frames-per-second, non-drop encoded LTC. Rate Pull Up/Down Normally a synchronized audio clock is set to be precisely 44,100 Hz, 48,000 Hz, and so on. There are some cases where it is required to run the audio at pull-up or pull-down rates. The Rate Pull Up/Down options are: • Off - Normal use • 29.97 Up - If and only if the frame rate is 29.97 (DF or ND), then pull-up the audio clock rate. • 30.00 Down - If and only if the frame rate is 30.00 (DF or ND), then pull-down the audio clock rate. FreeWheel The HD-P2 FreeWheel setting lets you adjust how many bad, missing, or discontiguous timecode frames should elapse before dropping out of a timecode operation (record or play). The options are from 1 to 20 frames, or Infinite. After a timecode operation has started when FreeWheel is set to Infinite the LTC can be stopped or removed and it will still continue (In this case, you have to press the STOP key or run out of memory space or power to stop the timecode operation). Jam Sync When timecode is set to Infinite freewheel, and a valid timecode source is connected, the internal timecode generator is started. While there is a signal, the HD-P2 will continue to follow the external timecode. Should the timecode stop, the internal timecode generator takes over as the timecode reference until one of the following occurs: • clock source is changed • freewheel setting taken off of Infinite • power cycle This assumes that the internal clock, or something else, does not stop when the LTC is unplugged. You can turn on/off the timecode (via keys) or disable/ enable timecode, and the generator will continue to run. Trigger Mode When FreeWheel is not set to Infinite, a timecode opera- 22 TASCAM HD-P2 Owner's Manual tion will stop if LTC is lost. If LTC restarts, perhaps in a different position, the HD-P2 will either start another timecode operation (Trigger Mode of Auto) or will wait to start another operation until the REC or PLAY keys are pressed (Trigger Mode of Single). Trigger on Frame Once a timecode operation has been initiated (by pressing PLAY or REC with timecode on), the operation will start either once any incoming timecode frame is recognized (Trigger on Frame Off) or once a particular timecode frame is recognized (Trigger on Frame On). Trigger-Frame If Trigger Mode is set to Single, then you cam specify the particular trigger frame in HH:MM:SS.FF format (Make sure you select Save and press the SELECT key once you have entered the frame number). Timecode Origin When a project is created with timecode enabled, it has an initial timecode origin of 01:00:00.00. This defines the beginning of a 24-hour "timecode day" for the project. If an operation hits the end of the timecode day (e.g. 00:59:59.29, in this case), it is stopped. Before recording audio into the project, the user can modify the start/stop points of the timecode day to correspond with the range of external timecode that is expected to be used with the project. For example, if the user is using 30 fps code, and sets the timecode origin to 02:00:00.00, the timecode day will range from [02:00:00.00 to 23:59:59.29] and then from [00:00:00.00 to 01:59:59.29]. In this case, a recording at 00:01:30.00 will be towards the end of the 24-hour timecode day instead of near the beginning. This makes "recording over midnight" possible in time of day applications. Timecode Offset The HD-P2 can offset incoming timecode up to +/-12 hours during playback. This is useful when the user wants to line up playback with a timecode source that uses a different timecode range than that used to originally record the material into the project. An On/Off selection allows the user to activate and deactivate the offset without having to reenter the numeric offset each time. The word offset appears on the main display when it is On letting the user know at a glance that a timecode offset is currently in effect. Offset This entry lets you specify the Timecode Offset in HH:MM:SS.FF format (Make sure you select Save and press the SELECT key once you have entered the offset).

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22
TASCAM
HD-P2 Owner's Manual
Continued from the previous page
Timecode
•
24.00
– This frame rate is used in both film and
HDTV systems.
•
25.00
– Used for PAL video.
•
29.97DF
– Standard frame rate for NTSC video with
wall time matching the drop-frame video time.
•
29.97ND
– NTSC video with non-drop encoded
frames.
•
30.00DF
– True 30 frame-per-second rate but with
drop-frame encoded LTC.
•
30.00ND
– 30 frames-per-second, non-drop encoded
LTC.
Rate Pull Up/Down
Normally a synchronized audio clock is set to be
precisely 44,100 Hz, 48,000 Hz, and so on. There are
some cases where it is required to run the audio at
pull-up or pull-down rates.
The
Rate Pull Up/Down
options are:
•
Off
– Normal use
•
29.97 Up
– If and only if the frame rate is 29.97 (DF
or ND), then pull-up the audio clock rate.
•
30.00 Down
– If and only if the frame rate is 30.00 (DF
or ND), then pull-down the audio clock rate.
FreeWheel
The HD-P2 FreeWheel setting lets you adjust how
many bad, missing, or discontiguous timecode frames
should elapse before dropping out of a timecode
operation (record or play). The options are from
1
to
20
frames, or
Infinite
. After a timecode operation has
started when FreeWheel is set to
Infinite
the LTC can
be stopped or removed and it will still continue (In
this case, you have to press the
STOP
key or run out of
memory space or power to stop the timecode opera-
tion).
Jam Sync
When timecode is set to
Infinite
freewheel, and a valid
timecode source is connected, the internal timecode
generator is started. While there is a signal, the HD-P2
will continue to follow the external timecode. Should
the timecode stop, the internal timecode generator
takes over as the timecode reference until one of the
following occurs:
• clock source is changed
• freewheel setting taken off of
Infinite
• power cycle
This assumes that the internal clock, or something
else, does not stop when the LTC is unplugged. You
can turn on/off the timecode (via keys) or disable/
enable timecode, and the generator will continue to
run.
Trigger Mode
When FreeWheel is not set to
Infinite
, a timecode opera-
tion will stop if LTC is lost. If LTC restarts, perhaps in
a different position, the HD-P2 will either start another
timecode operation (Trigger Mode of
Auto
) or will wait
to start another operation until the
REC
or
PLAY
keys are
pressed (Trigger Mode of
Single
).
Trigger on Frame
Once a timecode operation has been initiated (by
pressing
PLAY
or
REC
with timecode on), the operation
will start either once any incoming timecode frame is
recognized (Trigger on Frame
Off
) or once a particular
timecode frame is recognized (Trigger on Frame
On
).
Trigger-Frame
If
Trigger Mode
is set to
Single
, then you cam specify
the particular trigger frame in HH:MM:SS.FF format
(Make sure you select
Save
and press the
SELECT
key
once you have entered the frame number).
Timecode Origin
When a project is created with timecode enabled, it
has an initial timecode origin of 01:00:00.00. This
defines the beginning of a 24-hour “timecode day” for
the project. If an operation hits the end of the timecode
day (e.g. 00:59:59.29, in this case), it is stopped.
Before recording audio into the project, the user can
modify the start/stop points of the timecode day to
correspond with the range of external timecode that
is expected to be used with the project. For example,
if the user is using 30 fps code, and sets the timecode
origin to 02:00:00.00, the timecode day will range
from [02:00:00.00 to 23:59:59.29] and then from
[00:00:00.00 to
01:59:59.29]. In this case, a recording
at 00:01:30.00 will be towards the end of the 24-hour
timecode day instead of near the beginning. This
makes “recording over midnight” possible in time of
day applications.
Timecode Offset
The HD-P2 can offset incoming timecode up to +/-12
hours during playback. This is useful when the user
wants to line up playback with a timecode source that
uses a different timecode range than that used to origi-
nally record the material into the project. An
On/Off
selection allows the user to activate and deactivate
the offset without having to reenter the numeric offset
each time. The word
offset
appears on the main display
when it is
On
letting the user know at a glance that a
timecode offset is currently in effect.
Offset
This entry lets you specify the Timecode Offset in
HH:MM:SS.FF format (Make sure you select
Save
and
press the
SELECT
key once you have entered the offset).