Unibrain Fire-i 580/780/785/980 Operation Manual Page 28
3.11. 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”
Camera Type Step Range Range in dB Increment Length
Monochrome Camera 0 ~ 511 0 ~ 18 approx. 0.0358 dB/step
Color Camera 0 ~ 511 0 ~ 18 approx. 0.0358 dB/step
3.12. 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 trigger according to the modes it supports as per the following table. A software trigger can
also be used that issues a trigger signal via a software command. Software trigger is supported in modes 0 and 15.
Trigger
Edge Rising Edge or Falling Edge
Mode
Fire-i 580/785/780
0, 1, 2, 3, 4, 5, 15
Method Optocoupler (Photo-coupler)
Source External or Software Trigger
Inquiry Register
Address Name Field Bit Description
530h TRIGGER
_INQ
Presence_Inq [0] Presence of this feature
Abs_Control_Inq [1] Capability of control with absolute value
- [2..3] Reserved
ReadOut_Inq [4] Capability of reading the value of this feature
On/Off_Inq [5] Capability of switching this feature On and OFF
Polarity_Inq [6] Capability of changing polarity of trigger input
[7..15] Reserved
Trigger_Mode0_Inq [16] Presence of Trigger Mode0
Trigger_Mode1_Inq [17] Presence of Trigger Mode1
Trigger_Mode2_Inq [18] Presence of Trigger Mode2
Trigger_Mode3_Inq [19] Presence of Trigger Mode3
[20..31] Reserved
