Unibrain Fire-i 530/550/630/830/850 Operation Manual
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3.8.
Gain
Gain refers to the amount of the CCD output signal amplification where gain and shutter have similar effect on the
image. Manual and Automatic gain mode are supported and manual adjustment is possible for the following range.
For Gain control inquiry and status register, follow the same definition as “BRIGHTNESS”.
3.8.1.1.
Fire-i x3x models (530, 630, 830)
Camera Type
Step Range
Range in dB
Increment Length
Monochrome Camera
0 ~ 723
0 ~ 27
approx. 0.0345 dB/step
Color Camera
0 ~ 723
0 ~ 25
approx. 0.0319 dB/step
Auto Gain
0 ~ 528
All models except Fire-i 530
Auto Gain
0 ~ 468
Fire-i 530
3.8.1.2.
Fire-i x5x models (550, 850)
Camera Type
Step Range
Range in dB
Increment Length
Fire-i 550 (b/c)
16 ~ 64
0 ~ 12
(16~31) – 20 x Log(step x 0.0625)
(32~64) – 20 x Log(step/2 x 0.0625)
Fire-i 850c
0 ~ 63
Digital gain
3.9.
Trigger & Strobe
The cameras support external trigger by receiving input through the external trigger port. The falling edge and
rising edge can be detected as a trigger according to the modes it supports as per the following table. Strobe timing
is user controllable while signal output is TTL. The cameras can also be used with a software trigger that issues a
trigger signal via a software command.
3.9.1.
Supported Trigger
3.9.1.1.
Fire-i x3x models (530, 630, 830)
Trigger
Edge
Rising Edge or Falling Edge
Mode
0, 1, 2, 3, 4, 5, 14, 15
Source
External or Software Trigger
3.9.1.2.
Fire-i x5x models (550, 850)
Trigger
Edge
Rising Edge or Falling Edge
Mode
0
Source
External or Software Trigger