User`s manual

4M30 Camera User’s Manual 23
DALSA 03-32-10030-03
Table 16: Default values in effect after reset
Feature 4M30 Default
Frame Rate (fps) External Cntrl
Integration Time (ms) External Cntrl
Video Gain 1x
Pixel Offset 50 DN
Trigger Mode External
Integration Control External
Data Rate (MHz) 4x40
3.9 Adjusting Gain
Video gain is adjustable from 1.0 to 10.0 by writing a 16 bit value as an MS and LS byte
(only the 14 most significant bits of this value are actually used). The amplifier used for
gain control has a ranger of 40 dB, which equates to an adjustment increment of 0.00244
dB (40dB/2
14
). The camera gain value is calculated according to the following equation:
Value # 27306*log
10
(Gain)
Where 1.0
d Gain d 10.0
Example: Set Channel 1 to 2.5x Gain
Use these command/value pairs set the camera to 2.5x gain (you must write both MSB
and LSB values to all four ADC channels).
Value # 27306 u log
10
(2.5)
Value = 10866
= 2A72h
Write MSB Write LSB
Command Value Command Value
Binary 0000 0110 0010 1010 0000 0101 0111 0010
Hex 06h 2Ah 05h 72h