Labsphere SC-5500 - Introduction

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SX-01635-000, Rev. 5 1

Introduction

The SC-5500 Integrating Sphere System Control is the standard radiometer used by all single

channel Labsphere detector systems, including uniform source and photopic lamp measurement

systems. The radiometer is microprocessor-controlled, and accommodates either a silicon, ger-

manium, or photomultiplier tube detector. The SC-5500 can function as a stand-alone compo-

nent, or it can operate in conjunction with standard Labsphere Windows-based software.

Additional to its radiometer or photometer duties, the SC-5500 functions as an interface between

your desktop computer and peripheral Labsphere components. Equipped with both RS-232C

serial port and IEEE-488 bus interfaces, the SC-5500 communicates directly with the VAC-1000

Variable Attenuator Control, DM-1000 Detector Multiplexer and either the LPS-045-H or LPS-

200-H Lamp Power Supply. The SC-5500 exercises control over these peripheral devices, at the

same time, displaying the continuous output of your detector. The SC-5500 Integrating Sphere

System Control is designed for either table top or rack mounted use.

Up to 100 different calibration constants can be programmed into the SC-5500 for direct read-

out. All calibrations are performed at the Labsphere Optical Calibration Laboratory and are

traceable to NIST. Your system may include a custom calibration, or one of the standard calibra-

tions offered in Table 1.

Part No. Calibration Description Typical Units

SCC-LU Luminance of Source Display luminance of a uniform

source

Foot-Lamberts

SCC-RA Radiance of Source Display radiance of a source, inte-

grated over specified bandwidth

W/m

/sr

SCC-PS Power Input Display total input power at a speci-

fied wavelength

SCC-PM Power Input Display total input power at multiple

wavelengths, from 300 to 1100 nm

SCC-LF Luminous Flux Input Display input luminous flux lumens

SCC-AL Alternate Units Display luminance in different units

Lamberts, cd/m

Table 1. Standard integrating sphere calibrations offered by Labsphere.

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