LS - Integrating Sphere System Control

Features

Compatible with Silicon, Germanium, PMT, and Thermopile Detectors
Digital Autoranging Capability
Stores up to 100 Calibration Constants
IEE-488 Bus and RS-232C Serial Port
32 Output Lines for Computer Control of System Peripherals
Free Standing Cabinet or Rack-Mounted Option

The SC-5500 Integrating Sphere System Control is a versatile, microprocessor-based radiometer designed to operate with Labsphere integrating sphere systems. The microprocessor design provides on-board intelligence and lays the foundation for a number of advanced capabilities that are accessible either directly from the front panel or remotely through computer interface. Both an IEEE-488 bus and a RS-232C serial port are provided for flexibility in computer connection. The SC-5500 accommodates silicon, germanium, PMT, and Thermopile detectors. The SC-5500 provides 32 digital output ports for computer control of additional components such as power supplies, light sources and detectors. Up to 100 calibration constants can be stored in units appropriate to the user's application.

Operating Features

Front Panel Display

Two rows of backlit LCD digital readouts show the calibration selected for a particular detector and the measurement in units unique to that calibration.

Cal — Allows the user to select from up to 100 pre-programmed calibration coefficients.

Zero — Allows the user to make relative measurements by storing the current reading in memory and automatically subtracting it from all subsequent readings.

Norm — Allows the user to make normalized value readings by dividing all subsequent readings by the current reading.

Autorange — Commands the instrument to automatically determine the optimum range for the detector. The operator can manually override this control and set the range desired.

Option — Allows for selection of the detector, IEEE address, digital filter, the baud rate, parity and analog or digital display.

SPECIFICATIONS AND ORDERING INFORMATION

PART NUMBER	SC-5500
Range:	7 decades/Amps; 5 decades/Volts
Sensitivity:	0.1 pA; 1.0 µV
Resolution:	4.5 digits
Reading Rate:	2 readings/sec
Detector Types:	Si, Ge, PMT
Operating Power:	110-120/220-240 VAC;
	3.5A/1.8A
	50/60 Hz
Operating Environment:	0° to 50° C,
	0% to 70% relative humidity at 35° C
	Linearity derates 3% relative
Computer Interface:	IEEE-488 bus; RS-232C serial port
Dimensions (inches):	16.7 W x 16 D x 5.2 H
Weight:	8 lbs (3.63 kg)

SYSTEM CALIBRATIONS

System calibrations are easily programmed into the SC-5500 for direct readout in units appropriate to the user's application. Calibrations are performed in the Labsphere Optical Calibration Laboratory and are traceable to NIST. Units include: spectral radiance (mW/cm²/sr/1µm/1), radiance (mW/cm²/sr/1), radiant flux (watts), luminous flux (lumens) and illuminance (foot-candles).

PART NUMBER	CALIBRATION	DESCRIPTION	TYPICAL UNITS
SCC-LU	Luminance of Source	Calibrated to display	Foot-Lamberts
		Luminance of a uniform source
SCC-RA	Radiance of Source	Calibrated to display the	W/m²/sr
		Radiance of a source, integrated
		Over a specific spectral ban
SCC-PS	Power Input	Single Wavelength	W
		Calibrated to display total power
SCC-PM	Power Input	Multiple Single Wavelengths	W
		Calibrated to display total power
		Entering a sphere at 33 single wavelengths
		From 300 to 1100 µm, every 25 nm
SCC-LF	Luminous Flux Input	Calibrated to display the luminous	lumens
		Flux entering a sphere
SCC-AL	Alternate Units	Set SC-5500 to display and existing	lumens
		calibration in alternate units: eg. nits
		as well as foot-lamberts