Choppers

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A variable frequency radiation modulator, the SR-600 is a high performance chopper for many applications, including IR jammer simulation and low-level radiation detection. Designed to be robust and flexible, the SR-600 uses interchangeable blades for various chopping frequency ranges. The SR-600 can be used as a stand-alone unit or mounted to other CI products, such as

the SR-200 cavity blackbodies or the ILET collimator.

User-friendly software is installed that enables the user to perform the desired tasks easily.

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FeaturesSpecificationsModels

Certified to CE
Closed loop control
1 to 20,000Hz chopping frequency
TTL reference signal output
Built-in test

Frequency range	1 to 20,000 Hz (using interchangeable blades) Option: 0.2-0.9Hz
Frequency readout accuracy	1-10,000Hz: ±0.2Hz 10-20KHz: ±0.5Hz
Display Resolution	1 Hz, digital
Chopper reference signal	Square wave, TTL compatible
Computer control	GPIB, RS232, Ethernet
Motor	Direct current with optical encoder
Type of control	Closed loop with optical encoder feedback
Power supply	230/115 VAC, 15 Watt, 50/60 Hz

Blade Model	Blade Frequency [range -Hz]	Stability	Maximum Usable ApertureDia. [mm]
SC - slow chopper (+ C2 blade)	0.2 - 0.9,1-250	0.1%, Min 0.2 Hz	25.4
C-2	1-250	0.1%, Min 0.2 Hz	25.4
C-8	10-1,000	0.1%, Min 0.2 Hz	22.2
C-16	10-2,000	0.1%, Min 0.2 Hz	9.5
C-40	10-5,000	0.1%, Min 0.2 Hz	3.2
C-80	10-10,000	0.1%, Min 0.2 Hz	1.6
C-160	100-20,000	0.1%, Min 0.2 Hz	0.8

Choppers

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