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The SR540 chopper will handle all your optical chopping requirements-from simple measurements to dual-beam and intermodulation experiments.
The SR540 has a 4-digit frequency display, front-panel frequency control, analog voltage frequency control and two reference outputs with selectable operating modes.
Two anodized aluminum blades are provided: a 5/6 slot blade for frequencies up to 400 Hz, and a 25/30 slot blade for frequencies up to 3.7 kHz.
Reference outputs are provided for frequencies corresponding to each row of slots, as well as the sum and difference frequencies.
