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During normal studies the TDC Ultra automatically keeps track of the
time and stores the data at the end of the interval. In Video mode, YOU
have control over when to end the current interval and start the new one.
In the Normal mode screen, the time clock at the lower left runs in real
time while the interval time remaining clock at the lower right counts
down to the end of the interval. Once the end of the interval is reached,
the Ultra emits a triple beep and the data for the previous interval is
written to memory.
In Video mode, the time clock at the lower left remains static, show-
ing the start time of the current interval, and there is no interval time
remaining clock shown at the lower right.
When you want to advance to the next interval, you hold down, then
release, the DO, TAB and BANK 2 keys at the same time. Once the
keys are released, the Ultra will emit a triple beep and the clock at the
lower left will advance to show the start time of the next interval.
For example, you have recorded video at a location for 1 hour and
now want to count the traffic by watching the video playback. You select
a 15 minute interval and being your count in Video mode. Because the
traffic is not heavy at the location you are able to play back the video
at 3x speed. After 5 minutes of real time you've recorded on the Ultra
15 minutes of video time. By pressing the DO, TAB and BANK 2 keys
you can advance to the next interval time on the Ultra without having
to wait for a full 15 minutes to pass.
With the Video mode you can complete a study in a fraction of the time
it would take to do it in real time.
IMPORTANT: Once you have finished all your counting, be sure to
advance the interval before turning off the board. The data for the last
Turn Count
Count: 001 Int: 001
08:01:23 Rem 13:37
Turn Count
Count: 001 Int: 001
08:00:00 Rem
Normal Mode Video Mode
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