The optical modulator (optical chopper) – chopper is a BLDC motor based device which enables very wide range of modulation speeds and low jitter without the need of the shutter replacements. The modulation speed can be adjusted using local keyboard or USB/Serial port (Windows and Linux software included). The device generates very low noise and has low modulation head dimensions. It contains also the synchronisation output, which enables cooperation with lock-in-amplifiers. Delivered together with four disks - 2, 4, 8 and 16 slots.

Price for the set (chopper + 4 disks + PC software): 640 EUR + delivery costs

Features Modulation speed: 0.1 - 1600 Hz Speed control: digital (embedded keyboard and LCD or RS232/USB) Windows and Linux software included Stability: +/-0.1% Aperture: 18 mm Interfaces: RS 232, USB Synchronisation output: BNC, 5V TTL Supply: 24V DC, 90..250VAC, attached mains adaptor
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