NDT 200
™
Manual, Fast Forward Video, Inc.
11
Optional 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 “Record”ing,
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 record. Once the
empty space has filled, video is overwritten in the order recorded until the record is stopped.
Instant Startup Record
– CAUTION: Setting this option to ON will ERASE ALL VIDEO and FORMAT
the disk for new recording. This option is useful when the unit is powered down between recording
sessions and the user wants the unit to be ready to record very quickly (about 3 seconds) after power on.
When in this mode, the unit does not load the list of video currently recorded on the disk, only the specific
parameters to make sure it doesn’t overwrite previously recorded video. The DVR needs to have some
time following a recording to store the parameters necessary. The specific time is variable and
determined by the length of the record session.
To play the video without losing the disk placement for recording, change the setting to Play and
allow the NDT 200 to read the disk and build the list, play video as desired. To continue Recording
additional clips without clearing the disk, change setting back to Record.
To return to normal recording mode, change setting to OFF.
Pre - Event Recording
– This mode allows the user to have the recorder recording video, see something
that they want to record, press the external trigger 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
200™. 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, depending on the feature installed… If both are installed,
Normal Record Mode takes precedence.
External Trigger mode - A toggle switch should be used – Recording starts when the switch
closes and stops when it opens.
Pre-Event recording - 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).
