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● Output signal switching at strobe signal terminal
The signal from this terminal is set to OFF
as a factory default value.
This can be changed to STRB (Strobe timing
signal) or BUSY state by way of rewriting the
configuration register(CR) with serial
communication commands.
(CR5) and (CR6) correspond to STRBC0 and STRBC1, respectively.
Strobe signal in continuous shutter mode
●
This equipment is capable of outputting the strobe signal even in the continuous shutter mode as well as in the
asynchronous shutter mode when the setting is changed to output the strobe timing signal(STRB).
[Explanation] Usage of strobe signal in continuous shutter mode
Shutter exposure time
Continuous lighting
In the continuous shutter mode, only the incoming light for the time matching the exposure time of the camera is valid.
Accordingly, when a lighting unit is used in the continuous lighting mode, the lighting during the time other than this exposure time
period would be wasted.
Since this equipment is capable of outputting strobe signal (STRB) even in the continuous shutter mode, this output is used as a
trigger signal to control a LED light or other lighting units that can be turned on and off at high frequencies, which helps eliminating
the lighting during the useless lighting time.
The following benefits are derived from this type of lighting control:
The consumption of the power to a light can be saved by way of lighting only during the valid time for exposure.
●
The occurrence of smear is reduced because no light enters any time other than the exposure time periods.
●
(Note) When the strobe signal is used in the continuous shutter mode to make ON/OFF control on a lighting source unit,
the following must be taken into consideration:
Wherever possible, use a strobe lighting unit or others that are equipped with a power source separated from that
of the camera (electrically isolated power source) and a trigger input terminal (photo coupler input, etc.). If a
lighting unit that shares a power source or a ground circuit with the camera is turned on or off by the strobe signal,
the image output from the camera may have noise due to the influence of the fluctuation of the power supply
voltage or change in the electric potential that occurs at the ON/OFF timing.
Even when the insulation aforementioned is applied, the electromagnetic induction may lead to the occurrence of
noise on the image signal if the electric current of the lighting unit to be control is large. In this case, a measure
must be introduced to reduce electromagnetic induction noise arising from the lighting unit.
(4-5) Auto iris signal (IRIS)
●
Connection method for Auto iris signal
This equipment has the function to output the signal for controlling the auto iris lens.
It can be used with the image signal input type-Auto iris lens being connected.
The specifications of the suitable auto iris lens are as follows.
Video signal
1.0Vp-p / High impedance input
Power input
DC 12V / 60mA or less
(Note) "IRIS" is the false image signal output exclusively
used for controlling the image signal input type-
Auto iris lens. It is not possible to take out
the normal image signal from this pin terminal.
(Note) Combined use of the Auto iris lens and AGC/AEC
function of this equipment is not permissible.
Turn the AGC/AEC setting OFF when connecting
Auto iris lens.
Output circuit for Auto iris signal (IRIS)
●
This signal is effective as the Auto iris controlling signal
only in the case of no shutter mode or continuous shutter mode
Signal output level
Output impedance
Synchronizing signal
Exposure
Valid
STRB signal
0 to 0.7 V (DC)
75
Ω
None
(STRBC1,STRBC0)
Signal name
(0,0)
OFF
(0,1)
STRB
(1,0)
BUSY
Useless lighting time
To connector
on rear of the camaera
From
inbternal circuit
- 10 -
M10510B;10/58
Remarks
Always H level (Default)
Strobe timing
Asynchronous shutter busy
Exposure
Useless lighting time
Valid
6 pin connector (male)
HR 10A -7P -6P (Hirose)
１
GND (0V)
２
IRIS
３
GND
４
Vinit
５
STRB
６
+12V DC
12V DC
GN D
Video signal
To I nput terminal of Auto iris lens
3.3 V
3 . 3V
７５
２
IRIS signal
A M P
To Power supply unit
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