COHU 5935-1000/T100 User manual

Cohu Electronics
5930 Series Thermal Camera User's Manual
Cohu Electronics PAGE 1OF 17
3912 Calle Fortunada
San Diego, CA 92123-1827
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Figure 1 –5935-1000/T100 Thermal Camera
with 100mm Lens Installed
Technical Manual 6X-1060
January 3, 2006

Cohu Electronics
5930 Series Thermal Camera User's Manual
Cohu Electronics PAGE 2OF 17
3912 Calle Fortunada
San Diego, CA 92123-1827
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Fax: [phone]
Table of Contents
Product Description.......................................................................................................................................4
1.1 FPA Description............................................................................................................................4
1.2 Hardware Description ...................................................................................................................4
1.2.1 FPA Support PCB.........................................................................................................................4
1.2.2 Camera Controller PCB................................................................................................................4
1.2.3 Camera Support PCB...................................................................................................................5
1.2.4 Camera Power Supply PCB .........................................................................................................6
1.3 Camera Operation ........................................................................................................................6
1.4 Lens Options.................................................................................................................................6
1.5 Camera Performance ...................................................................................................................7
1.6 Mechanical Characteristics...........................................................................................................8
2. Installation.....................................................................................................................................8
2.1 Unpacking and Receiving Inspection............................................................................................8
2.2 Lens Cleaning...............................................................................................................................8
2.3 Electrostatic Discharge (ESD) Precautions..................................................................................9
2.4 Tripod Mounting Interface.............................................................................................................9
2.5 Main Rear Panel Signal Connector ..............................................................................................9
2.5.1 Camera Main Signal Connector..................................................................................................10
2.5.2 Mating Rear Panel Connector ....................................................................................................11
2.6 Main Rear Panel Digital Signal Connector .................................................................................11
2.6.1 Camera Digital Signal Connector ...............................................................................................11
2.6.2 Mating Digital Signal Connector .................................................................................................12
2.7 Power Input Selection.................................................................................................................12
2.7.1 AC Line Input Voltage Connections............................................................................................12
2.7.2 24VAC Input Voltage Connections.............................................................................................12
3. Camera Software Features.........................................................................................................13
4. Environmental Specifications......................................................................................................15
4.1 Temperature ...............................................................................................................................15
4.2 Water Resistance........................................................................................................................15
4.3 Relative Humidity........................................................................................................................15
4.4 Shock and Vibration....................................................................................................................16

Cohu Electronics
5930 Series Thermal Camera User's Manual
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List of Tables
Table 1 - FPA Support Functions..................................................................................................................4
Table 2 - Camera Controller Functions.........................................................................................................5
Table 3 - Camera Support Functions............................................................................................................5
Table 4 - Fixed Focus Lenses.......................................................................................................................7
Table 5- Camera Performance......................................................................................................................7
Table 6 - Main Signal Pin Descriptions.......................................................................................................10
Table 7 - Digital Signal Pin Descriptions.....................................................................................................11
Table 8 - Environmental Cable Clamps ......................................................................................................12
Table 9 -Software Features.........................................................................................................................13
List of Figures
Figure 1 - 5930 Series Thermal Camera .....................................................................................................1
Figure 2 - Lens Mechanical Interface............................................................................................................7
Figure 3 - Camera Dimensions.....................................................................................................................8
Figure 4 - Tripod Mounting Locations ...........................................................................................................9
Figure 5 - Camera Rear Panel....................................................................................................................10
Figure 6 - Voltage Input Selection...............................................................................................................13

Cohu Electronics
5930 Series Thermal Camera User's Manual
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3912 Calle Fortunada
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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.

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5930 Series Thermal Camera User's Manual
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Table 2 –5930 Series Camera Controller Functions
Specifications
FPA Format 320 x 240
FPA Frame Rate NTSC: 59.94 Hz
PAL: 50 Hz
FPA Clock Generation ≤6
FPA Adjustable Bias Generation ≤4
Nonuniformity Correction 2 point gain/offset
NUC Gain Coefficient Precision 16 bit
NUC Gain Range 0 to 2 –2-15
NUC Offset Coefficient Precision 16 bit
NUC Offset Coefficient Range -16,384 to +16,383.5
NUC Offset Refresh Precision 16 bit
NUC Offset Refresh Range -16,384 to +16,383.5
NUC Tables Possible ≤12
Defective Pixel Replace Kernal 5 lines / 7 columns
Intensity Transformation Table Dual 14 in / 16 out
Zone Statistic ROIs 4 Zones
Zone Statistical Computations Average, Sigma, Max., Min.
Processed FPA Video Output Precision 16 bit
Processed FPA Video Output Selections Digitized FPA Video
NUC Corrected Video
Pixel Replaced Video
Intensity Transform Video
PCB Size 2" x 2"
1.2.3 Camera Support PCB
The camera support PCB provides all the power supply conditioning and camera interface
functions. The camera support PCB provides all the functions listed in Table 3.
Table 3 - Camera Support Functions
Specifications
Power Input Range +5.8V to +28.2V
Smart Battery Pack Interface 1 Wire
+VhiM Output (Bias Power) +7.0V to +12V @ 300mA
+5.XVM Output (Main Board Power) +5.0V to +5.5V @ 5.0A
Video Encoder Formats NSTC or PAL
Number of Analog Video Outputs 2 Composite and SVID
Digital Output Formats LVDS (Serialized 4 Pair)
COM Port Interfaces 2
COM Port Formats RS232C
RS422 (Differential Full Duplex)
RS485 (Differential Half Duplex)
Oscillator Frequency NTSC: 49.09090 MHz
PAL: 59.00000 MHz
NI: 80.00000 MHz
External Clock Input Format LVDS
External Sync Input Format LVDS
Calibration Flag Reference Control Dual Temperature, "Heat Only"
Calibration Flag Reference Setpoint 8 bit DAC
Calibration Flag Motor Control PWM
Cooling Fan Interface PWM (+5V Level)
Motorized Focus Interface +5V "H-Bridge"
PCB Size 2" x 2"

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5930 Series Thermal Camera User's Manual
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1.2.4 Camera Power Supply PCB
The camera power supply PCB provides all the power conditioning and external interfaces for the
camera. The camera power supply PCB provides the following functions:
 Configures the following power inputs based on model selection;
5935 Series: 95-250VAC
5934 Series: 20-28VAC
5932 Series: 11-16VDC
 Input power conditioning.
 AC Power Fusing.
 Power illumination (internal LED).
 Configures COM port interface (RS422).
 External interface connectors (through cable assemblies) to main Camera electronics
(includes power, COM, analog video and digital video).
 Expansion connectors for auxiliary camera functions (not used on base Camera model).
1.3 Camera Operation
This Camera has a multitude of operational and configuration settings which can be adjusted via
software control. Typically only a few settings or adjustments require attention once the Camera
is embedded into a specific application. A complete list of adjustable settings and software
features can be found in Paragraph 3 of this Document.
Cohu Electronics provides a host software application (Camera Control Interface) that can be
used for generic camera control and camera setup. For specific information on the capabilities of
this application please refer to Cohu CCI manual. Cohu Electronics also sells a developer's
software guide for end-users that intend on designing a custom software interface for their own
application. Contact the Cohu’s Product Manager for more information on how to develop you
own application for this camera.
1.4 Lens Options
The camera is equipped with a lens mount with a specific internal thread to accept a series of
watertight, fixed focus, f/1.4 Infrared lenses. See Table 4 for the f/1.4 lens options. The lenses
are designed with the front lens element sealed for NEMA 4 and IP67 water resistance rating. All
these lenses have the front lens element Diamond Carbon Coated for added resistance against
weather and scratching.

Cohu Electronics
5930 Series Thermal Camera User's Manual
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3912 Calle Fortunada
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Table 4 - Fixed Focus Lenses
Cohu Part
Number Focal Length Minimum Focus Distance Field of View (H x V)
T013 13mm 2 inches 69ºx 53º
T025 25mm 12 inches 36ºx 28º
T050 50mm 24 inches 18ºx 14º
T075 75mm 30 inches 13.5ºx 10.5º
T100 100mm 36 inches 9ºx 7º
T200 200mm 120 inches 4.5ºx 3.5º
The front lens plate has a machined groove designed specifically to interface to an O'Ring
installed on the f/1.4 lenses to ensure the water resistance rating of the camera. See Figure 2 for
lens mounting interface specifications.
Figure 2 - Lens Mechanical Interface
1.5 Camera Performance
The Camera meets the performance parameters listed is Table 5.
Table 5- Camera Performance
Performance Requirement Specification
Non-Uniformity Correction < 0.0025
Noise < 3 Counts
NEDT (f/1.4 Optic and FPA) < 100 mKelvin
Operability >99.5%

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5930 Series Thermal Camera User's Manual
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3912 Calle Fortunada
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Fax: [phone]
1.6 Mechanical Characteristics
The Camera dimensions are as shown in Figure 3. These dimensions show the Camera without
a lens or mating connector. The mating connector adds about 2.0" to the rear of the camera
which includes room for the cable's bend radius. The different focal length lenses are larger as
they go up in focal length. This will add to the length of the camera depending on the lens focal
length.
Figure 3 - Camera Dimensions
2. Installation
This section describes everything from removing the camera from the box to how to connect the camera
to external devices.
2.1 Unpacking and Receiving Inspection.
The camera was tested and carefully packed at Cohu Electronics. Upon acceptance by the
carrier, they should assume responsibility for its safe arrival. Should you receive this item in
damaged condition, claims for shipping damage must be filed against the carrier.
To return the camera to the factory for any other service, please contact Cohu Electronics
Customer Service Department for a Return Authorization Number.
2.2 Lens Cleaning.
The lens provided with this Camera has the front lens element diamond carbon coated. Even
though this coating is very tough, the following cleaning procedures should be adhered to. A light
dusting of air should be enough to dislodge most dust particles, although small amounts of dust
should not affect camera performance. If necessary to clean the front surface, use 75% isopropyl
alcohol and a lens tissue. Use a clean section of tissue with each swipe so as to
not drag dirt back on the front lens surface.

Cohu Electronics
5930 Series Thermal Camera User's Manual
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3912 Calle Fortunada
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2.3 Electrostatic Discharge (ESD) Precautions.
The installation procedures in this user's manual do not require entry into the Enclosure of the
Camera. However in the event that the camera needs to be opened as directed by Cohu
Electronics , the following ESD precautions should be followed:
 Use a conductive pad on whatever work space used.
 Connect the conductive pad to earth ground through a 1MΩresistor.
 Use a wrist strap connected to earth ground through a 1MΩresistor when working with the
equipment.
 Maintain the relative humidity above 30%. Working on this circuitry with a relative humidity
below 30% requires more extreme ESD precautions not specified in this document.
 Use antistatic bags to store and transport any electronic components or circuit board
assemblies removed from this Camera. Use new antistatic bags as old antistatic bags can
lose their static protection after use.
2.4 Tripod Mounting Interface
The camera has a tripod mounting plate clamped to the bottom of the Camera. The Tripod mount
has five mounting threads (0.250-20UNC-2B) separated as shown in Figure 4. This provides two
center-to-center mountings, being 1.75”and 1”bolt patterns. Insure the mounting arm/fixture
supports one of these mounting bolt patterns.
Figure 4 - Tripod Mounting Locations
2.5 Main Rear Panel Signal Connector
The main signal input/output connector is located on the rear panel of the Camera as shown in
Figure 5.

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5930 Series Thermal Camera User's Manual
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3912 Calle Fortunada
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Figure 5 - Camera Rear Panel
2.5.1 Camera Main Signal Connector
The main signal connector that is mounted to the rear panel of the Camera is manufactured by
Amphenol and the part number is PT07H-14-18P. This connector is hermetically sealed which
means it is gastight therefore exceeds the NEMA 4 and IP67 water resistance rating of the
Camera. This connector is equipped with 18 contacts. See Table 6 for main signal pin
descriptions.
Table 6 - Main Signal Pin Descriptions
Pin
Number(s) Direction Signal Name Signal Description
G Input Chassis Chassis Ground
U Input AC Line AC Line high side power input. Camera will function on
voltage inputs of 90-250VAC, 47-63Hz.
T Input AC Neutral/24VAC Lo AC Line and 24VAC return (Neutral).
B Input 24VAC Hi 24VAC high side power input. Camera will function on
voltage inputs of 20-28VAC, 47-63Hz.
C Input +12VDC DC Camera positive power input. The Camera can
function on voltage inputs of 11-16VDC.
K Input -12VDC DC Camera power common.
M Input RX+ RS422: Camera receive data positive (+).
N Input RX- RS422: Camera receive data negative (-).
S Output TX+ RS422: Camera transmit data positive (+).
R Output TX- RS422: Camera transmit data negative (-).
P Input Ground Data/Power Ground
L Output Video Video
A Output Video Ground Video Ground