Cohu Electronics
5930 Series Thermal Camera User's Manual
Cohu Electronics
P
AGE
4
OF
17
3912 Calle Fortunada
San Diego, CA 92123-1827
Phone: 858-277-6700
Fax: 858-277-0221
Product Description
The Cohu 5930 series is a long wavelength (LWIR) Infrared microbolometer based camera system. The
embeddable electronics provides the foundation for the processing and signal generation for the camera.
Below is a description of all the different aspects that make up the complete camera assembly.
1.1
FPA Description
The FPA used in the 5930 is an uncooled 320 x 240 matrix or "staring" array of microbolometer
detectors (51um square), sensitive in the 8.0-14.0 micron range. The FPA is enclosed in an all-
metal evacuated dewar package, and is thermally stabilized by the electronics using a built in TE
cooler. The FPA incorporates internal thermal reference detectors that provide compensation for
thermal drift and noise.
1.2
Hardware Description
The camera electronics are comprised of four major circuit boards as described below.
1.2.1
FPA Support PCB
The FPA support PCB provides all the interface signals required to control the FPA. The FPA
Support PCB supports all the FPA functions as listed in Table 1.
Table 1 - 5930 SERIES FPA Support Functions
Specifications
FPA Clocks
3
FPA Biases (DAC adjustable)
1
FPA Adjustable Bias Resolution
8 bit
FPA Biases (Fixed)
1
FPA Power Supplies
3
FPA Video Outputs
1
FPA Video Offset Range
0 to +3.25V
FPA Video Offset Resolution
8 bit
FPA Video ADC Resolution
14 bit
FPA Video ADC Rate
≤
7.37500 MHz
FPA TEC Setpoints
2
PCB Size
2" x 2"
1.2.2
Camera Controller PCB
The camera controller PCB provides all the video processing and control functions for the
camera. The camera controller PCB provides all the functions listed in Table 2.
