SCT-340CD Large Rotating Disc Optical Chopper

Description

Features

The Model SCT-340CD is an optical chopper based on 200 mm diameter discs. The larger disc size allows larger diameter beams to be chopped. Please note that it does not allow smaller diameter beams to be chopped at a faster rate.

The chopper system comes with a choice of two 200 mm discs.

Specifications

SCT-340CDU Control Unit

• Output Voltage: 15 V DC Maximum
• Stability: ± 0.01 %/°C
• Frequency Control: Internal - Manual Control via 10 turn potentiometer. External - BNC connector for 0 to 15 V
• Frequency Read Out: 5 digit 14 mm LED display with 0.01 Hz resolution, 0.1 Hz or 1 Hz resolution depending on frequency
• Frequency Stability: Short term - see phase jitter. Long term - ± 0.1 % of maximum frequency
• Reference output: 5 V HCT TTL signal via BNC socket
• Power Requirement: 100 – 130 V or 200 - 260V AC, 50 or 60 Hz, 12 VA
• Dimensions: 254 (W) x 76 (H) x 178 (D) mm
• Weight:6 kg

SCT-340H Chopping Head

• Motor: 11 pole DC motor, sleeve bearings with more than 6000 hours lifetime, 0 - 6000 rpm reversible
• Reference pick-up: IR led and phototransistor pair with Schmitt trigger
• Dimensions: 122 (H) x 75 (L) x 40 (W) mm, without disc
• Mounting: Optical stalk - adjustable between 6.5 and 14.0 mm diameter. Mounting holes - 2 x 3 mm

SCT-340D Chopping Discs

• Disc types: 2 and 4 slot
• Material: Half hard brass, 1mm thick
• Diameter: 200 mm
• Surface Finish: Chemically blacked
• Mark to Space Ratio: 1 to 1 with one blade

Frequency Range: