Catalogue Programmable DSP Radiometer
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OL 730D
Programmable INDUSTRIAL DSP Radiometer
OL 730D Applications
DC Radiometer/Photometer Mode - The high accuracy and high conversion rate of the OL 730D electronics combined with DSP low-pass filtering enables the OL 730D to accurately measure the current generated by DC operated detectors. Thus, when configured with the appropriate detector/filter/input optics, the OL 730D operates as an extremely sensitive radiometer or photometer capable of measuring detector signals from 1 x 10-14 to 2 x 10-3 amperes. The actual photometric and radiometric sensitivities are, of course, dependent on the choice of detector, filter(s), and input optics.
AC Radiometer/Photometer Mode - When used in the AC Mode, the OL 730D is a complete dual-phase lock-in amplifier that uses DSP to perform the "synchronous rectification" which is central to the operation of all lock-in amplifiers. The digital techniques employed in the Ol 730D significantly reduce errors such as non-linearity, offset and drift, harmonic distortion, and temperature effects that are inherent in classical analog lock-in amplifiers. However, the greatest benefit to the user is the performance enhancement at the lower signal levels.
The OL 730D features a built-in, variable frequency, optical chopper controller. The OL 730D-CH Programmable Variable Speed Optical Chopper is available as a stand-alone option.
OL 730D Options and Accessories
The basic OL 730D is furnished with DC and AC lock-in capabilities. The following features are available as options:
OL 730D-PC Photon counting Option - When used with the appropriate photon counting photodetector, the OL 730D-PC provides the ultimate sensitivity with excellent linearity from 1 to 1,000,000 counts per second.
OL 730D-HV High Voltage Industrial dc power supply - A programmable, high voltage DC power supply for use with photomultiplier detectors. DC voltage can be varied from 0 to -1500 VDC with ultra low ripple and drift.
OL 730D-CH Optical Chopper - The OL 730D-CH consists of integrated control electronics and chopper enclosure along with a control cable. A precision Dc motor assembly with an integrated optical encoder is mounted in a machined, metal enclosure that can easily be mounted to an optical bench. The standard 4-slot blade provides chopper frequencies from 10 to 350 Hz. An optional 18-slot blade extends the frequency range from 180 to 1200Hz.
OL 730D-IEEE4888 Communication Interface - An IEEE-488 Interface supplements the standard RS232.
Photon Counting Radiometer/Photometer Mode (optional) - By utilizing and enhancing some rarely used inherent features of the DSP chip, the OL 730D can be used with photon counting photomultipliers to achieve the ultimate photometric or radiometric sensitivity. The photon counting option provides excellent sensitivity and linearity in the count range of 1 to 1,000,000 counts per second.
OL 730D Accessories
A large selection of accessories is available for use with the OL 730D. These accessories include:
Detectors - A wide range of high sensitivity detectors is available for use with the OL730D. These detectors allow the user to measure over all or a portion of the entire wavelength range of 200 nm in the ultraviolet to 30 urn in the infrared. Each detector is mounted in a rugged, metal housing and low noise connectors and components are used to maximize sensitivity.
Optical filters - A range of filters to provide single wavelength isolation, radiometric and photopic correction to the responses of OL detectors is available. Contact OL for specific requirements.
Input Optics - A wide range of telescopes, microscopes manufacturer, integrating spheres, transmissive diffusers, baffle tubes etc. are available to make any type of measurement. (see OL 730C Bulletin or contact OL for details)
Readout (units) ....................................................................................................................................User Programmable
Display ..........................................................................................................................................41/ Digits plus Exponent
Response Time ...................................................................................................................User Selectable for Each Gain
Range ...................................................................................................................................from 0.0033 to 4096 seconds
Zero Control .........................................................................................................Automatically Subtracted when Pressed
Range Selector ..............................................................................................................................................Auto / Manual
PMT DC Bias Voltage .........................................................................................................- 200to-1100 VDC (optional)
Computerlnterface ...........................................................................................RS-232C(Standard), IEEE-488(Optional)
Size ..................................................................................................................3.5" X 17" X 20" (9 cm X 43 cm X 25.5 cm)
Weight....................................................................................................................................................10 pounds (4.5 kg)
Power Requirements .......................................................................................................115 VAC 60Hz / 220 VAC 50 Hz
Warranty ........................................................................................................................................1 Year, Parts and Labor
Bulletin 134/Rev.6-06
Optronic Laboratories, Inc. 4632 36th Street, Orlando, FL 32811 Tel: 1 407 422 3171 Fax: 1 407 648 5412 Email: info@olinet.com
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