NAC Image Technology SP-642, Руководство пользователя

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(00292)H 8 - 13
8.8 DUAL Recording
DUAL recording is a function of the HX cameras and is a recording method that uses two segments to
simultaneously record high and low speeds. With DUAL recording, the high speed recording segments
are partitioned into multiple blocks recording with the timing shown in the following figure.
The two segments filmed with DUAL recording can be separately played back and saved.
High Speed
Low Speed
Time
Restrictions for DUAL Recording
・
The frame size for high speed and low speed DUAL recording is the same.
・
The ratio for the frame rate for high speed and low speed DUAL recording is in whole numbers.
・
The maximum frame rate for DUAL recording is 1/2 the normal recording.
・
The DUAL recording shutter OPEN exposure time is 1/2 the normal recording.
・
If switching from normal recording to DUAL recording, 1/2 of the normal recording frame rate is
set for high speed recording.
Method of Setting DUAL Recording
1) Partition at least two segments before setting DUAL recording.
2) Set the frame rate to high speed.
If the DUAL recording high speed recording is 2000pps, set the frame rate to 4000pps.
3) Open the recording trigger mode setting window.
4) Select DUAL as the recording trigger mode.
5) Set the number of blocks for high speed recording.
4 is set in the example.
6) Set the trigger timing.
In the example, CENTER is set for high speed and
START is set for low speed.
7) Set the frame rate for the low speed recording.
50pps is set as the frame rate for low speed in the
example.
8) Adjust the high speed and low speed recording time
with the segment size settings.
9) Select the high speed recording segments and start
DUAL recording.
Trigger signals