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
2
/sr
SCC-PS Power Input Display total input power at a speci-
fied wavelength
W
SCC-PM Power Input Display total input power at multiple
wavelengths, from 300 to 1100 nm
W
SCC-LF Luminous Flux Input Display input luminous flux lumens
SCC-AL Alternate Units Display luminance in different units
Lamberts, cd/m
2
Table 1. Standard integrating sphere calibrations offered by Labsphere.
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