8.Features
© 2023 China Daheng Group, Inc. Beijing Image Vision Technology Branch 78
When pixel format is BayerGB10
：
45.75
μ
s~49.825
μ
s
When pixel format is BayerGB12
：
61.3
μ
s~66.93
μ
s
When pixel format is Mono8
（
BPP8
）：
67.528
μ
s~71.436
μ
s
When pixel format is Mono10
：
53.9
μ
s~57.975
μ
s
When pixel format is Mono12
：
72.56
μ
s~78.19
μ
s
MARS-2621-42GTM/C
MARS-2622-42GTM/C
MARS-2621-42GTM-NIR
MARS-2622-42GTM-NIR
MARS-2621-42GTM/C-S
MARS-2622-42GTM/C-S
MARS-2621-42GTM-NIR-S
MARS-2622-42GTM-NIR-S
Non-overlap Exposure: 5μs
Overlap Exposure:
When pixel format is BayerGB8/Mono8: 9305μs~13955μs
When pixel format is BayerGB12/Mono12: 18605μs~27905μs
MARS-5000-24GTM/C
Non-overlap Exposure: 5μs
Overlap Exposure:
When pixel format is BayerGB8/Mono8: 9405μs~14105μs
When pixel format is BayerGB12/Mono12: 18805μs~28205μs
MARS-6500-18GTM/C
MARS-6501-18GTM/C
Non-overlap Exposure: 5μs
Overlap Exposure:
When pixel format is BayerGB8/Mono8: 12405μs~18605μs
When pixel format is BayerGB12/Mono12: 24805μs~37205μs
Table 8-2 MARS-GT series camera exposure delay range
8.3.
Table Basic Features
8.3.1.
Gain
The MARS-GT series camera can adjust the analog gain, the adjustable range of every model refer to
4.General Specifications.
When the analog gain changes, the response curve of the camera changes, as shown in Figure 8-32. The
horizontal axis represents the output signal of the sensor in the camera, and the vertical axis represents
the gray value of the output image. When the amplitude of the sensor output signal remains constant,
increasing the gain makes the response curve steeper, and that makes the image brighter. For every 6dB
increases of the gain, the gray value of the image will double. For example, when the camera has a gain
of 0dB, the image gray value is 126, and if the gain is increased to 6dB, the image gray will increase to
252. Thus, increasing gain can be used to increase image brightness. When the environment brightness
and exposure time keep constant, another way to increase the image brightness is to change the camera's
digital gain by modifying the lookup table.
Note that increasing the analog gain or digital gain will amplify the image noise.
