DRS Technologies Tamarisk 320 User manual

Tamarisk®320
17 μm 320x240 Long Wave Infrared Camera
User Manual
Document No: 1012593
Revision: D

©Copyright 2012, DRS TECHNOLOGIES, Inc. - All rights reserved.
13532 N. Central Expressway
Dallas, TX 75243
877.377.4783
www.drsinfrared.com
All rights reserved. The contents of this document may not be reproduced in whole or in parts
without the written consent of the copyright owner.
NOTICE
ALL STATEMENTS, INFORMATION, AND RECOMMENDATIONS IN THIS MANUAL ARE BELIEVED
TO BE ACCURATE BUT ARE PRESENTED WITHOUT WARRANTY OF ANY KIND.
NOTWITHSTANDING ANY OTHER WARRANTY HEREIN, ALL DOCUMENT FILES AND SOFTWARE
ARE PROVIDED “AS IS” WITH ALL FAULTS. DRS DISCLAIMS ALL WARRANTIES, EXPRESSED OR
IMPLIED, INCLUDING, WITHOUT LIMITATION, THOSE OF MERCHANTABILITY, FITNESS FOR A
PARTICULAR PURPOSE AND NONINFRINGEMENT OR ARISING FROM A COURSE OF DEALING,
USAGE, OR TRADE PRACTICE.
THE SOFTWARE LICENSE AND LIMITED WARRANTY FOR THE ACCOMPANYING PRODUCT ARE
SET FORTH IN THE INFORMATION PACKET THAT SHIPPED WITH THE PRODUCT AND ARE
INCORPORATED HEREIN BY THIS REFERENCE. IF YOU ARE UNABLE TO LOCATE THE
SOFTWARE LICENSE OR LIMITED WARRANTY, CONTACT YOUR DRS REPRESENTATIVE FOR A
COPY.
IN NO EVENT SHALL DRS BE LIABLE FOR ANY INDIRECT, SPECIAL, CONSEQUENTIAL, OR
INCIDENTAL DAMAGES, INCLUDING, WITHOUT LIMITATION, LOST PROFITS OR LOSS OR
DAMAGE TO DATA ARISING OUT OF THE USE OR INABILITY TO USE THIS MANUAL, EVEN IF
DRS HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES.
Rev History
Revision Number Release Date Description
A 3/15/2012 Initial Release
B 7/152013
Added content for Enhanced Features i.e.
colorization, image enhancement, symbology, splash
screen, ICE etc. Added firmware upgrade file to CD
contents. Many other updates
C 9/26/2013 Added HDK SDK
D 11/11/2013 Prepared for Public Release
Camera Link® is a registered trademark of the Automated Imaging Association.

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TABLE OF CONTENTS
Table of Contents.................................................................................................................... i
Acronyms and Abbreviations .................................................................................................. i
Reference Documentation ......................................................................................................ii
Safety Instructions..................................................................................................................iii
Notifications: Caution, Warning and Note...................................................................................iii
1System Description.........................................................................................................5
1.1 Introduction ......................................................................................................................5
1.2 Available configurations....................................................................................................5
1.3 Quick Reference Specification Table................................................................................7
1.4 Range Performance .........................................................................................................8
1.5 Unpacking and Handling ..................................................................................................9
2Theory of Operation......................................................................................................11
2.1 Infrared Waves and Radiation........................................................................................11
2.2 Microbolometers – Detecting Infrared Energy.................................................................11
2.3 Thermal Imaging ............................................................................................................12
2.4 Anatomy of a Tamarisk®320 .............................................................................................13
3Set-up and Operation....................................................................................................16
3.1 Mounting ........................................................................................................................16
3.2 Power Requirements......................................................................................................16
3.3 Power Connections and Sequence.................................................................................17
3.4 Electrical Interfaces........................................................................................................18
4Camera Controls...........................................................................................................19
4.1 Camera Functions and Image Optimization Overview....................................................19
5Maintenance and Routine Care ....................................................................................21
5.1 Maintenance...................................................................................................................21
5.2 Routine and Recommended Care ..................................................................................21
6Specifications................................................................................................................23
6.1 Detailed Product Specifications......................................................................................23
7Tamarisk®320 Quick Start Demonstration Set-up...........................................................25
7.1 Installing the Tamarisk®320 Camera Control Software .....................................................25
7.2 Viewing Analog Video on a Separate Display.................................................................25
7.3 Viewing Digital Video on a Shared Display.....................................................................27
8Configurations and Accessories....................................................................................31
8.1 Part Number Configuration Guide...................................................................................31
8.2 Available Accessories.....................................................................................................33

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9DRS Camera Control Software.....................................................................................37
9.1 DRS Camera Control Software Overview.......................................................................37
10 Contact Information.......................................................................................................38

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ACRONYMS AND ABBREVIATIONS
Abbreviation Description Abbreviation Description
°C
Celsius
mm
millimeter
°F
Fahrenheit
ms
milliseconds
AGC
automatic gain control
MSB
Most Significant Bit
BPR
bad pixel replacement
MTU
Maximum Transfer Unit
CCA
circuit card assembly
MWIR
Mid-wave infrared
CL
center line
NETD
noise equivalent temperature difference
COMM
communication
NTSC
National Television System Committee
CSC
Computer Software Component
NUC
non-uniformity correction
CSCI
Computer Software Configuration Item
NVTHERM
Night Vision Thermal Analysis Tool
CSU
Computer Software Unit
OEM
original equipment manufacturer
dB
decibels
OLA
Optical Lens Adapter
DSP
digital signal processor
P
probability
ESD
electrostatic discharge
POL
polarity
E-Zoom
electronic zoom
psi
pound per square inch
FOV
field of view
Rev
revision
FPA
Focal Plane Array
ROI
region of interest
ft
feet
SC
split configuration
G
gravitational force
SWIR
Short-wave infrared
g
gram
TBD
To Be Determined
GUI
graphical user interface
TCR
Temperature coefficient of resistance
H
height
TIM
Thermal Imaging Module
HFOV
horizontal field of view
UART
Universal Asynchronous Receiver Transmitter
I/O
input/output
UAV
unmanned aerial vehicle
ICD
Interface Control Document
UFPA
Un-cooled Focal Plane Array
ICE
Image Contrast Enhancement
USB
Universal Serial Bus
ID
identification
V
Vertical or Voltage
IR
infrared
VDC
volts direct current
IRS
Interface Requirements Specification
VGA
video graphics array
km
kilometer
VOx
Vanadium Oxide
LR
lower right
W
width or Watt
LWIR
long-wave infrared
μm
micron (micrometer)

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REFERENCE DOCUMENTATION
The following documents form part of this specification. In the event of a conflict between
documents referenced herein and the contents of this specification, the contents of this specification
shall be considered a superseding requirement.
Document No: 1012819 Tamarisk®320 Software Interface Control Document
Document No: 1012820 Tamarisk®320 Electrical Interface Control Document
Document No: 1012821 Tamarisk®320Camera Control Software User Guide
Document No: 1003727 Tamarisk®320 Mechanical Interface Control Document

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SAFETY INSTRUCTIONS
NOTIFICATIONS: CAUTION, WARNING AND NOTE
Throughout this manual, notifications are used to alert the user’s to potential risks and to minimize
the potential for personal injury and or damage to the product. When a notification is present, it is
important that the user review and understand all statements related to the notification before
proceeding. If questions arise, please contact your authorized dealler or DRS Technologies.
Notifications are preceeded by a symbol and followed by highlighted text. Three types of
notifications are used throughout this manual and are defined below:
CAUTION
A caution is a procedure, practice, or condition that, if not strictly followed, may
result in personal injury or damage to the equipment that may impede product
performance.
WARNING
A warning is intended to alert the user to the presence of potentially harmful
circumstances and provide precautionary guidance for mitigating risk of personal
injury and or damage to the product.
NOTE
A note is a statement that clarifies or is used to emphasize important information.
1. Read all instructions
2. Keep these instructions for future reference.
3. Follow all instructions
4. Heed all warnings.
5. Do not submerge this apparatus in liquid of any kind.
6. Clean per recommended instructions using dry non-abrasive cloth.
7. Do not install near any sources of intense heat such as radiators, furnaces,
stoves or other apparatus that regulary produce excessive heat.
8. Refer all servicing to qualified service personnel.

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1SYSTEM DESCRIPTION
1.1 INTRODUCTION
The Tamarisk®320 is a VOx based long-wave infrared (LWIR) video camera built around DRS’s
17 μm pixel pitch 320X240 microbolometer detector and is sensitive to thermal radiation emissions
from 8 - 14 microns. Introduced to the market in April 2011, the Tamarisk®320 lay claims as the
world’s smallest thermal video camera in its class. With configurations having a design envelope
just over 1 cubic inch (3 cubic centimeters) in size, weighing as little as 35 grams and dissipating
approximately 1 Watt of power, the Tamarisk®320 is ideally suited for applications where size, weight
and power requirements are of key concern. The Tamarisk®320 is available in two base
configurations with multiple lens options including a no-lens configuration.
Figure 1: Tamarisk®320 Product Family
The Tamarisk®320 is a “volts-in, video-out” product providing 8-bit and 14-bit digital video or NTSC
/ PAL analog video and can be controlled via RS-232 or USB 2.0 serial commands issued from an
external controller, DRS’s camera control software or an integrator-developed interface.
1.2 AVAILABLE CONFIGURATIONS
The Tamarisk®320 is available in two base configurations as detailed below. The Base configuration
provides digital video output only. The Base + Feature Board configuration provides a subset of the
digital outputs as well as analog video output and other features. Please refer to Section 8
Configurations and Accessories for details including part number configuration guide and available
options.
1.2.1 Applicable Products
This document applies to the following products:
•Tamarisk®320
•Tamarisk®320 with Enhanced Features
1.2.2 Base Configuration
This configuration provides only digital output in the form of 8-bit or 14-bit parallel digital video
(LVCMOS UART), 8-bit or 14-bit Camera Link® video, and shutter control through a 60-pin

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connector. Advantages of the BASE configuration are parallel digital video output, reduced size,
weight and power requirements (see Appendix A for details). The BASE cofiguration is pictured
in Figure 2 below. It is comprised of an optical lens asembly or OLA, (the OLA includes a lens,
lens mount with integrated camera frame or chassis and a retaining ring); a camera housing with
integrated shutter and infrared detector/bias board assembly (occluded from view), and a
Processor board. For full signal pin-out please refer to the Tamarisk®320 Electrical ICD; see
Reference Documentation on page ii.
Figure 2: Tamarisk®320 BASE Configuration
1.2.3 Base + Feature Board Configuration
Consisting of an OLA mount, camera housing, Processor board and Feature board. the BASE +
FB configuration supports RS232 and USB 2.0 serial control, NTSC and PAL analog video
output, Camera Link, and accepts a range of input power voltages from 5-18V through a single
30-pin connector. For details concening connector pin-out and pin assignments, refer to the
Tamarisk®320 Electrical ICD. See Figure 3.
Figure 3: Tamarisk®320 BASE + FB Configuration
Processor
Board
60-pin
Connector
Lens
Lens Mount
Retaining
Ring
Camera
Housing
Camera
Housing
Feature
Board
30-pin
Connector
Lens
Lens Mount
Retaining
Ring

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1.3 QUICK REFERENCE SPECIFICATION TABLE
Table 1: Tamarisk®320 Product Specifications Table
Sensor
Sensor Type Uncooled VOx Microbolometer
Array Format 320x240
Pixel Pitch 17 µm
Spectral Band 8 - 14 µm
Sensitivity (NEdT) @ f/1.0 and 23C < 50 mK
Frame Rates 9Hz; 60Hz
Video Features / Outputs
Analog Video Format NTSC (480i @ 30Hz); PAL (576i @ 25Hz) Field Switchable
Digital Video 14-bit/8-bit LVCMOS or Camera Link®
Automatic Gain and Level (AGL) User defined and persistent through power cycles
Digital Zoom and Pan Dynamic Region of Interest, e-zoom from 1x to 4X
ICE Image Contrast Enhancement
Image Control Wht Hot, Blk Hot, Invert, Revert
Color LUTs 9 unique (24-bit) color pallets
Custom Lens Calibration On Camera storage for up to 5 custom LUTs
Image Control Wht Hot, Blk Hot, Invert, Revert
Non-Uniformity Correction 1-point w/ shutter or Through the Lens
Time to First Image < 2 sec
Physical Attributes
BASE
BASE + FB
Camera Body Envelope H x W x D
(no lens or lens mount )
See Configuration Specific Data See Configuration Specific Data
Camera Core Weight (no lens) See Configuration Specific Data See Configuration Specific Data
Bulkhead Mounting Feature IP 67 seal at lens barrel / bulkhead interface
Interfacing BASE BASE + FB
Primary Electrical Connector 60 pin 30-pin
Input Power Voltage Range 3-5V 5 -18V
Typical Power Dissipation @ steady state 1.W 1.1W
FFC Duration <0.5 sec <0.5 sec
Communication (serial) USB and RS232 (baud rate user selectable)
External Sync Input/Output Yes
Environmental
Operating Temp Range -40ºC to +67ºC (-40ºF to +153ºF)
Non-operating Temperature Range -55ºC to +75ºC (-67ºF to +167ºF)
Shock performance 70 G shock all axis
Vibration performance 4.43 G (three axis)
Electromagnetic Interference FCC Class A digital device
Humidity performance Non-condensing 5% -95%
Environmental Stewardship ROHS Compliant
Specifications subject to change without notice; refer to www.drsinfrared.com for the most up
to date product specifications.

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1.4 RANGE PERFORMANCE
Typical detection, recognition and identification range performance has been modeled for multiple
available lens solutions using NVTHERM IP 20091See Figure 4: Tamarisk®320 Range Data.
Figure 4: Tamarisk®320 Range Data
Data presented above are believe to accurately reflect camera performance under stated
conditions but are not guaranteed performance metrics.
NOTE
1Lens transmission and MTF taken from actual design data; No LOS jitter; Atmospheric transmission is clear
(90% at 1km), Detector sensitivity 30mK, Probability of detection and recognition = 50%; Other factors apply
4740
3390
2235
2055
1255
900
1070
725
455
415
240
170
830
560
350
320
185
130
2105
1450
925
845
505
355
425
285
175
160
90
65
330
220
135
120
70
50
01000 2000 3000 4000 5000 6000
6.2° HFOV
50mm
f/1.2
9° HFOV
35mm
f/1.2
15° HFOV
21mm
f/1.2
16° HFOV
19mm
f/1.1
27° HFOV
11mm
f/1.2
40° HFOV
7.5mm
f/1.2
Distance (meters)
Lens Configuration
Tamarisk®320 Range Data
Man Identification
Man Recognition
Man Detection
Vehicle
Identification
4.0m x 1.5m
1.8m x 0.5m

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1.5 UNPACKING AND HANDLING
In this section, a typical packaging solution is presented along with steps for properly unpacking the
Tamarisk®320 product. See Table 2.
WARNING
DEVICE SENSITIVE TO ELECTROSTATIC DISCHARGE
Electronics are sensitive to electrostatic discharge. Please follow appropriate
ESD procedures when handling the open electronics board sets. The open
electronics should not be exposed to moisture or dust.
CAUTION
Bias and Processor boards are a matched set and should not be interchanged
with other like products. Inadvertent or intentional mixing of board pairs with that
of another unit may result in poor image performance and void the product
warranty. Debris and or smudges on sensor windows will impair image quality.
Avoid contact with sensor window.
NOTE
The lens surface has been specially treated with a hard carbon, “diamond-like”
coating that will protect the optics from minor scratches and abrasions; it is
normal for the lens color to appear black.
Table 2: Unpacking the Tamarisk®320
Step # Steps View
1 Inspect shipping container and note any damage that
may have occurred during shipping.

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Step # Steps View
2 Open shipping container by breaking the seal and lifting the cardboard lid – a recess or notch has been cut into
the box front to ease this process
3
Remove top layer of protective foam or padding and
review contents of the package to ensure all
components are present. If discrepancies arise, please
notify your authorized dealer or DRS Technologies
directly. For a complete list of available accessories
please refer to Appendix A: Configurations and
Accessories
4
Remove antistatic bag(s) containing module(s) or
camera assembly and accessories and set them on a
suitable work surface
5
Unseal antistatic bags and inspect contents. Proper
ESD procedures are required to prevent damage to
sensitive electrical components.
6 Inspect camera/modules and lens for proper
configuration and material workmanship

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2THEORY OF OPERATION
2.1 INFRARED WAVES AND RADIATION
Infrared radiation or infrared waves are electromagnetic waves with frequencies ranging from ~ 0.4
to 400 Terrahertz. This corresponds to a band on the electromagnetic spectrum just below (infra) red
visible light. Just as visible light is sub-divided into separate colors (red through violet) based on its
characteristic frequency/energy, so too is the infrared spectrum sub-divided into unique bands of
interest - Near-infrared (so designated as it is nearest to the visible spectrum), Mid-infrared, and Far-
infrared. See Figure 5 below.
Mid-wave infrared (MWIR) detectors and Long-wave infrared (LWIR) detectors are commonly
associated with 3-5µm and 8-14µm wavelengths respectively and are of particular interest as the
human body and other living creatures generate thermal emissions with a wavelength in the 4 -12µm
range. For this reason, detectors sensitive to thermal emissions have found wide acceptance in
applications involving human activity as well as others. Short-wave infrared or SWIR has been used
for decades in remote control units for TVs. More recently SWIR has proven itself for infrared
imaging as it is less susceptible to the attenuation effects of water vapor and haze.
Figure 5: Electromagnetic Spectrum
2.2 MICROBOLOMETERS – DETECTING INFRARED ENERGY
First invented by Samuel Langley in 1878, a bolometer is a device for measuring electromagnetic
radiation via the change in a material’s electrical resistance as incident electromagnetic waves transfer
energy to the material in the form of heat. Bolometers, like electrical resistors, are passive devices
10
0
10
8
10
2
10
6
10
4
10
4
10
10
10
-2
10
12
10
-4
10
14
10
-6
10
16
10
-8
10
18
10
-10
10
20
10
-12
10
22
10
-14
10
24
10
-16
10
8
10
0
10
6
10
2
grays
X rays
UV
IR
µ-wave
FM
AM
Long radio waves
n(Hz)
l(m)
Increasing Frequency (n)
Increasing Wavelength (l)
SWIR
.7-2µm
MWIR
3-5µm
LWIR
8-14µm
Near-IR
Far-IR
Thermal-IR
Mid-IR
0.4µm
0.7
1000µm
2.0
4.

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and do not need to be energized or powered to work, for this reason bolometers are often referred to
as passive detectors.
Microbolometers, so called for the miniature size of the individual sensing elements, were introduced
by Honeywell Corporation in the late 1970s and rely on intrinsic material properties that are sensitive
to IR radiation. Passive IR detectors do not require supplemental illumination or light; nor do they
require specialized cooling of the detector material. For this reason, they are often referred to as “un-
cooled” devices. These advantages enable size, weight, and power requirements to be significantly
reduced relative to cooled thermal cameras.
As semiconductor fabrication techniques have continued to drive minimum transistor geometries ever
smaller, so too have microbolometers evolved. Today’s leading edge microbolometer manufacturers
are producing individual unit cells (pixel elements) with sub-20µm dimensions. Smaller unit cell
sizes have enabled greater packing density and higher resolution sensor arrays.
A microbolometer consists of an array of pixels, each pixel being made up of several layers. Figure 6
illustrates the basic unit structure of a single pixel element. Each company that manufactures
microbolometers has their own unique procedure for producing them and may use a variety of
different absorbing materials. In this example the bottom layer consists of a readout integrated circuit
(ROIC) built on a silicon substrate.
Figure 6: Basic Unit Structure of a Microbolometer Pixel Element
Individual pixel elements are arranged into an array called a focal plane array or FPA that defines the
detector format and image resolution. Common 4:3 aspect ratio video formats include: 160x120,
320x240, 640x480, 1024x768 and 1280x960.
2.3 THERMAL IMAGING
DRS is a leading manufacturer of microbolometers and has optimized the performance characteristics
of its Vanadium Oxide (VOx) sensor material and pixel element. The material’s unique composition
and manufacturing processes are tightly controlled to produce films of excellent quality, and
characteristics including very low temperature coefficient of resistance (TCR), 1/f noise and bulk
resistance. DRS’s patented absorber design also differentiates DRS from other manufacturers. The
unique design of the pixel absorber element increases detector sensitivity and responsivity to long-
wave infrared radiation.

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Figure 7: Patent No. US 7,622,717
“Pixel Structure Having an Umbrella Type Absorber with One or More Recesses or Channels Sized
to Increase Radiation Absorption.” This patent was filed on December 3, 2007 and granted on
November 24, 2009. See Figure 7.
How a thermal image is generated:
A specialized lens (typically made of germanium) focuses IR waves from the scene onto the FPA.
The electrical resistance of each pixel changes proportional to the thermal energy imparted by the
incident waves. An array of differing resistance values is the result with each pixel element having a
uniquely generated resistive value.
The ROIC reads the resistive value of each pixel element and generates a corresponding voltage level.
These voltage levels are sent to the signal processor. Using proprietary algorithms, the processor re-
assembles the voltage input stream into a format for digital/analog displays. The combination of the
voltage impulses from all of the elements creates the scene image.
Camera outputs commonly include a gray scale, image polarity reversal, and on-screen symbology as
well as a host of other features like electronic zoom, automatic gain control, Image contrast
enhancement, etc.
2.4 ANATOMY OF A TAMARISK®320
There are four major subassemblies that comprise the Tamarisk®320 - the lens, detector module
(inclusive of lensmount, shutter, FPA sensor and bias board), processor board, optional feature board.
An exploded view illustrating these five subassemblies and the addidional back shell accessory item
can be seen in Figure 8.
Figure 8: Anatomy of a Tamarisk®320

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2.4.1 Lens
Lens material and optical designs have been optimized for the transmission of LWIR
wavelengths between 8 -14µm and to utilize the full field of the FPA. If one of the available lens
solutions does not meet the need for a particular application, a custom optic can be mated to a
lens-less thermal imaging module to produce a custom solution -subsequent calibration may be
necessary to optimize performance. For such cases, DRS has developed a Custom Lens
Calibration utility. Please contact your authorized dealer or DRS Technologies for more
information..
CAUTION
Each camera is configured with the specified lens selection and undergoes
individualized factory calibration to optimize its thermal imaging performance.
Interchanging lenses, even of the same FOV, may introduce lens artifacts or
introduce contaminates to the sensor window and mechanical shutter. Degraded
image performance may result and in some cases void the product warranty.
NOTE
The Tamarisk®320 lens assemblies are IP67 rated. The camera itself is not. The
camera was designed with intentions for bulkhead mounting. When using the
supplied retaining ring, proper O-ring and following the proper installation
procedures for bulkhead mounting, the seal will maintain an IP67 enclosure.
2.4.2 Lens Mount
In addition to providing structural support and alignment for the detector module and lens, the
lens mount includes anchor poinis for the processor and feature boards and is a key component
for managing heat transfer and isothermal performance.
2.4.3 Detector Module
The detector module encloses the camera shutter and sensor bias board assembly (refer to section
2.4.4 below) within an isothermal housing. When mated to the lens mount, the resulting
assembly provides essential thermal strapping between the lens and FPA. Disassembly of the
detector module will degrade module performance and imaging quality.
CAUTION
Disassembly of the detector module will degrade module performance, image
quality and void the product warranty.

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The Shutter is normally open allowing scene IR energy through to the sensor. The shutter closes
briefly when performing a one-point calibration. A “clicking” sound can be heard and is typical
under normal operation. The shutter can be controlled via an external command.
2.4.4 Sensor and Bias Board
The sensor/FPA is mated directly to the Bias board. The Bias board provides power for the FPA
as well as signal conditioning. DRS’s U3600 is a 17-micron pixel pitch 320 x 240 uncooled
VOx FPA with a LWIR spectral response range from 7.5μm to above 14µm. Sensor level NETD
is typically less than 30mK.
CAUTION
Pointing the camera directly at the sun for extended periods of time may cause
permanent damage and/or temporarily affect thermal imaging performance.
2.4.5 Processor Board
The primary function of the processor board is to provide sensor clocking and image processing
of the sensor data. Functions include NUC, pixel substitution, video formating, AGC, ICE,
Color, image optimization and provides power for LVCMOS UART, 8-bit and 14-bit digital
video, Camera Link®, and shutter control.
2.4.6 Feature Board
The Feature board supports both mechanical and electrical interfaces for input power, RS-232
and USB 2.0 serial interface, and analog and digital video outputs through a single 30-pin
connector and enables camera operation over a range of voltage inputs from 5-18 volts.

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3SET-UP AND OPERATION
3.1MOUNTING
The Tamarisk®320 was designed as an OEM core with the versatility to be integrated into a wide
range of applications. When embedding or mounting the Tamarisk®320 it is important to provide
proper heat strapping to maintain iso thermal performance as well as maintain an IP67 seal in
applications requiring as much. DRS, makes available application notes to share feature performance
best-known-methods and things-to-consider when designing a solution around an OEM core.Please
visit www.drsinfrared.com to get an up-to-date list of available application notes and white papers.
3.1.1 Tamarisk®320 Mounting
The Tamarisk®320 has been designed for bulkhead mounting via the use of a retaining ring and
sealing O-ring capable of maintaining an IP67 seal at the bulkhead interface. For this purpose,
DRS recommends EPDM rubber, 70 shore A hardness. Refer to the Tamarisk®320 Mechanical
ICD for more details.
Figure 9: Tamarisk®320 Example of Bulkhead Mounting
NOTE
When embedding the Tamarisk®320 be sure to provide sufficent thermal strapping
for addressing thermal conduction. For optimal imaging performance the lens,
lens mount and detector FPA should be at the same temperature. It is important
to account for these issues in your design.
3.2POWER REQUIREMENTS
The Tamarisk®320 is designed to operate over a range of DC input voltages and consumes very little
power under steady state conditions. Please refer to section 6.1 for detailed specifications. Operating
the camera at voltage levels outside the specified range may result in permanent damage to the