Ambient Recording ACD 201 Manual - Página 13

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Ambient Recording ACD 201 Manual
2.5. Setting the generator from an ASCII source
The Master slate is fully Aaton compatible and can be set by the Aaton
Origen C or by the Ambient Controller ACC 101 using the ASCII
protocoll.
The ASCII protocol enquires the time and userbit values from the slate, it
checks the error and reloads the external time value at the 00 frame
transition point on initialisation.
3

Operating modes

3 . 1
Generator Mode
The Clockit master master slate contains a very accurate timecode generator
which drives the display. When the slate is synchronised to a film camera or
Nagra recorder, the timecode will not drift off more than 1 frame in 10 hours* .
Other timecode machines which do not have such accurate Timecode
generators such as DATs and video recorders may have to be synchronised
every hour. We recommend the Lockit box as an accurate timecode and
videosync source for Audio or video recorders.
*Note:
Clockit units running together do not drift apart more then 1 frame in 24 Hours.
When Clockit units are used in combination with other timecode equipment
calibration errors can lead to increased TC-drift necessitating rejaming more
frequently.
The Clapping sequence is as follows
Open slate -- The Timecode is displayed
Close slate -- The Timecode is frozen for 3 frames, then the userbits are
When switch 7 is ON the clapped time is displayed for 2 mins at reduced
brightness after the userbits are shown. This value can be logged by the
Continuity/Script person.
Traditionally the timecode in the master slate display is used to represent the
timecode in the Audio machine for syncing purposes. It may or may not have
the same framerate as the Filmcamera. The framerate should be chosen so
that the 00 frame point in Recorder and camera is identical, assuming no
timecode error. See the following table:
Film Camera
Video Camera
Master Slate
NTSC Video
PAL Video
Connect the ASCII Device
Check error
Initiate reload
Red LED goes ON, then the Green LED blinks.
4
displayed for 3 seconds.
fps
fps
fps
fps
OFF
5
O N
24
25
23.98
25
30*
29.97
25
25
30
29.97
30*
29.97
25