LDS100 Differential Sources±0.001°C STABILITY
PHOTONICS CIRCLE OF EXCELLENCE AWARD WINNER
Sy s tem Us e and Des c r iption
The EO I LDS series of differential temperaturesources create precise, adjustable thermal contrast
patterns primarily in testing and characterization ofIR imaging systems.
The LDS Series features set point resolution of0.001°C and stability of ±0.001°C. These
exceptional capabilities enable accurate evaluationof the most sensitive IR systems.

Configur ation
These sources are available in stand alone
configuration or integrated into one of the manyTarget Projectors/Simulators and Automatic Test
Stations EOI offers. Source sizes (target area with15°FOV) range from 1.8" x 1.8" to 12" x 12".
The optional MicroCavity ® emitting surface
provides a significant improvement in effective
emissivity.

Contr oller
Each Laboratory Differential Source is
supplied with a 19" rack mount digital
controller. Operated manually from the front
panel keypad or automatically using any of thefour built in computer interfaces, this versatile
controller also controls all optional equipment.

Menu Selec tions Inc lude:••••••••••

Temperature Setting
Control Mode Set- Differential Mode- Absolute- Differential Mode
- Effective Differential
Display Resolution
K, °C, °F
Remote/Local Control
Ready Window Tolerance
Interface Parameters
Pow er On Configuration
Self Test
Calibration:- Access by User Assigned Passw ord

Computer Inter fac es
Complete computerized control of thesystem is available through built-in
interfaces.
••••

IEEE 488
RS-232
RS-422
RS-485All four interfaces are resident in controller.
T he IEEE 488 and any one of the RS formats
may be used at the same time.

Slew Contr ol

Calibr ation

A remote hand held controller box is included which

Each LDS100 System is calibrated at EOI

may be used to facilitate observer optimization while

prior to shipment. Recommended

measuring MRTD.

calibration cycle is 6 months. Calibration istraceable toDiffer ential T emper atur e ModeT emperature control of the thermal contrast between
controlled surface (source) and target.

Abs olute T emper atur e ModeControl of source at absolute temperatures.

.

Calibration tables are stored in memory
and are easily updated via the front panel
keypad.

T ar gets
An extensive list of standard four bar, slit
and circular targets is available. EOI also
supplies custom targets. Custom targets

Effec tiv e Differ ential Mode
Compensation for emissivity differences or losses inadjunct optical systems so that zero differential
temperature corresponds to zero radiometriccontrast.

can be any pattern with minimum
dimension of 0.001" (0.025mm).

Specifications

Slew Rates
Including Settling

Stability±0.001°C

Absolute T emperature Range

5 to 95°C

Differential T emperature Range–20 to +70°C

0.1 delta T< = 22 sec.

Emissivity
Std Emitting Surface
MicroCavity™ Emitting Surface

0.97 ± 0.02
0.995 ± 0.005

1.0 delta T< = 35 sec.

Absolute T emperature Accuracy±0.015°C

10 delta T< = 60 sec.

Set Point Resolution

0.001°C

Display Resolution

0.001 or 0.0001

Time to 0.01°C

Source Dimension in Inches
Depth toModel

Emitting

NumberSurface

OpticalUseable Target Area
Width Depth Height
Inches (mm)HeightABC

DEF

LDS100-02

1.2

1.8 (45)

3.5

6.6

4.8

2.7

LDS100-04

2.7

2.9 (73)

8.0

8.5

7.5

3.5

LDS100-06

2.7

4.6 (116)

10.0

9.7

9.5

5.0

LDS100-08

2.7

6.6 (167)

12.0

10.4

11.5

6.0

LDS100-10

2.7

8.6 (218)

13.0

9.4

13.5

7.0

LDS100-12

3.0

9.6 (243)

14.0

9.0

14.5

7.5

Power Requirements
The LDS system operates from 100, 120, 220, or 240 VAC ± 10% (switch selectable),
50/60 Hz. The larger systems require 220V and may require a power amplifier in addition
to the controller. Standard cable lengths between controller and blackbody orcontroller/output stage and output stage/blackbody are 8 feet. The plug-in mains power
cable is also 8 feet long.

How to Order
Select desired model and specify option by adding suffix; Example: M odel LDS100-04/W
Differential Source with 4" x 4" clear aperture/2.9"x2.9" useable target area with optional 12
position manual target.
This is data sheet E0662B. Information regarding this data sheet and any requests for data sheets may bedirected to eoi@electro-optical.com. Specifications subject to change.