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SR-60 Chopper


SR-60 Chopper
  • Certified to MIL-T-28800D and CE
  • 1° resolution (360° phase shift of reference signal)
  • Closed loop control
  • TTL reference signal output
  • 1 to 20,000Hz chopping frequency
  • Built-in test

Features

A variable frequency radiation modulator, the SR-60 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-60 uses interchangeable blades for various chopping frequency ranges. You can operate the SR-60 as a stand-alone unit or mount it to other CI products, such as the SR-200 cavity blackbodies or the ILET90 collimator.

Specifications

Frequency range 1 to 20,000 Hz (using interchangeable blades)
Dynamic range Greater than 1:100
Frequency stability ±0.1% of reading (regardless of ambient changes, excluding jitter)
Frequency readout accuracy ±1 Hz for 1-250 Hz, (2 Hz for 250-20,000 Hz
Display Resolution 1 Hz, digital
Phase shift of chopper reference signal 0-360°, settable in 1° degree increments
Chopper reference signal Square wave, TTL compatible
Warm up time 1 minute
Computer control All functions can be set and read via an IEEE-488 bus
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

Models

Blade Model Blade Frequency/Hz Maximum Usable Aperture Dia./mm
SC - slow chopper (+ C2 blade) 0.2 - 0.9,1-250 25.4
C-2 1-250 25.4
C-8 10-1,000 22.2
C-16 10-2,000 9.5
C-40 10-5,000 3.2
C-100 10-10,000
C-160 100-20,000 0.8