218M - Bentham 218M Optical chopper controller - modular control electronics. For...
- Part Number:
- 218M
- Model Number:
- 218M
- Make:
- BENTHAM
- Lead Time:
- Available
- Qty In Stock:
- Available
Bentham 218M Optical chopper controller - modular control electronics. For ise in 217 / 417 bin or equivalent. Simple Type: Optical Chopper
In measurement scenarios where the optical signal to be measured may be confounded with a background optical signal, either from ambient lighting, or, in the infrared, heat (or infrared radiation) emitted by instrumentation and the background, a means of discrimination between the two is required. This is achieved by modulating the desired optical signal on a known carrier wave by an optical chopper. The 218M optical chopper consists of a modular control unit coupled by a 2m long lead to the chopping head. Four, easily interchangeable, chopping discs are provided, which allow chopping frequencies in the range of 0.5Hz to 4kHz. A variable aperture 2-slot disc and higher frequency discs are also available. The 218M provides a square wave reference output suitable for use with lock-in amplifiers. The 218M is a single-width module, housed within the 417/T mother unit.
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Features
- Chopping frequencies from 0.5Hz to 4kHz
- Excellent phase jitter and frequency stability
- Long motor life
Specifications
Applications
- None Available
Aliases
- None Available
