NAC Image Technology MC-529, Руководство пользователя

Страница: 91 / 180

(00235) 3-39
3.2.16 Synchronized Signal Selection (SYNC SEL)
While in the STOP mode, the synchronized signals can be selected from the SYS MENU on the J-PAD3.
The MEMRECAM GX-3 uses the starting time for sensor exposure as the standard for recording. The
exposure time is synchronized with the internal time signals or the external time signals shown below.

Internal Time Signals
（
INT
）
Synchronized with the synchronized signals (VD signals) in the camera.

External Time Signals
（
EST2
）
If EST2 is selected, the exposure start signals (EST
：
External Shutter Trigger, Exposure Start)
input from the J3 cable EST2 connector is the standard. The minimum frequency for the EST
signal is 0Hz so ultra high speed recording is possible.
3.2.16.1 Setting Method
1) While in the STOP mode, press MENU to display the
TOP MENU.
2) Use the arrows to select "SYS MENU" from the TOP
MENU, and then press SET to display the SYS MENU.
3) Use the arrows to select "SYNC SEL" from the SYS
MENU (Figure 3-43).
4) Use the arrows to select the synchronized signals.
INT Synchronized with the internal synchronization signals of the camera
EST2 Synchronized with the EST2 signal from the J3 connector
It is possible to set the polarity of the exposure start signal from the EST2 connector.
Refer to
【
3.2.16 External Input/Output Signal Polarity Selection
】
.
3.2.16.2 Synchronized EST Signal Recording
3.2.16.2.1 Precautions for Use
1)
Filter Value Settings
If there is noise in the EST signal, set a noise filter value to activate the filter. Refer to the
【
3. 2.18 EST filter setting
】
for the setting method.
2) Timing Restrictions
The relationship between the cycle for the EST signal and the maximum recording speed must fulfill
the following conditions. If they are not met, proper recording is not possible.
EST signal cycle
＞
1
／
maximum recording speed
The relationship between the cycle for the EST and the shutter exposure time must also fulfill the
following conditions. If they are not met, proper recording is not possible.
EST signal cycle
＞
shutter exposure time
＋
5.84
μ
sec
Figure 3-46 SYNC SEL