Fast Forward Video NDT 200 - Manual (Page 10)

NDT 200™ 0 1 l a u n a M
Feature Description
Time Lapse Recording – Skips a user-defined number of frames (set as time code format) between the
captured frames. This is useful to extend record time when every frame is not absolutely critical or to
capture a long-term event at a specified interval over time. The unit will indicate “Record”, but the Time
Code will change only when a frame is saved.
The following examples are for NTSC – normal frame rate approx. 30 frames per second.
An interval of 00:00:00:02 will record every other frame; yielding 15 frames per second.
An interval of 00:00:00:05 will record every 5th frame; yielding 6 frames per second.
An interval of 00:00:00:15 will record every 15th frame; yielding 2 frames per second.
An interval of 00:00:01:00 will record one frame per second.
An interval of 00:01:00:00 will record one frame per minute.
An interval of 01:00:00:00 will record one frame per hour.
Requires Single-Frame Recording be set ON to function.
Single-Frame Recording – Records a single frame each time Record button is pressed. If user desires
each frame to be in a separate file, stop record between each frame. Otherwise, leave unit in Recording mode,
and press the Rec button to capture a frame.
Loop record – Continuously records material over the available space on the drive at the time the
recording starts. The loop never overwrites video on the drive prior to the start of a recording. Once the
empty space has filled, video is overwritten in the order recorded until recording is stopped.
Pre - Event Recording – EVENT mode allows the user to have the recorder recording video, see
something that they want to record, press the external trigger (see below) and save only the video from
the set number of minutes prior to the trigger input until the recording is stopped. If no trigger is received
between the Record and Stop commands, the video recorded will not be saved.
Example: User has a test that takes two minutes to determine if the results are worthy of
recording. Rather than starting and stopping the recorder and erasing unimportant video, the user sets
the unit pre-event time to 3 minutes, starts recording, starts the test. If the results warrant saving, the
user presses the trigger and waits for the completion of the test to stop the recording. Any video
recorded prior to 3 minutes before the trigger is discarded when the recording stops.
External Trigger – The external trigger input is located above the Y/C connectors in the side of the NDT
200G. The jack is a 3.5mm stereo audio jack. Tip is the trigger input, Ring is Record LED output, Shank
is ground. LED flashes when unit is in pass-thru mode, it is on continuously when recording. The
external trigger has two operating modes,
Normal Record Mode is the default, but it becomes a user choice in the menu – Set External Trigger.
REC(ord) mode - A toggle switch should be used – Recording starts when the switch closes and
stops when it opens.
EVENT mode - A momentary switch should be used – the trigger is sensed when the switch is
closed for longer than 100msec (1/10 th of a second).
External trigger option is not required for EVENT trigger operation.
Variable Speed Playback (Selected Speeds) – Selectable Fixed speeds settings are 6,12, 24, 25, 30,
33, 60, 90, 120, 150, 180, 240 frames per second. Video played recorded at 30fps and played at 6fps
will play 5 times faster than normal. The same video played at 150fps will play at 1/5 speed.
Variable Speed Playback (Fully Variable) – The fully variable feature allows the user to increment or
decrement the setting to play at any, up to 360, integer frames per second.
Real-Time Clock – Allows user to have Time/Date stamps on video files or to have Time or Date in
Overlay on video to be viewed in QuickTime.