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    行業(yè)產(chǎn)品

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    北京三尼陽(yáng)光科技發(fā)展有限公司


    光學(xué)斬波器

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    更新時(shí)間：2024-09-30 11:01:09瀏覽次數：76次

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    商鋪產(chǎn)品：74條

    所在地區：北京北京市

    產(chǎn)品簡(jiǎn)介

    652系列光斬波器已停產(chǎn)，請您選購其他型號

    詳細介紹

    Model 651-1
    Dual Aperture Light Chopper
    The model 651-1 uses the standard head. This is a dual port design allowing two optical beams to be modulated simultaneously at different frequencies, f1 and f2. Two reference (sync) outputs are made available at the control unit, corresponding to f1 and f2, for use with signal recovery processing electronics, such as a lock-in amplifier.

    Two small blanking plates are provided with the standard head and one of these allows either the top port or the bottom port to be blanked off to reduce the effect of any stray light passing through an unused path. The second plate provides some measure of beam restriction when using large diameter beams on the higher frequency (ａnd therefore smaller aperture) port. The standard head is supplied complete with a flat base plate to allow the unit to be used in a free standing mode on a bench type surface. A special feature of this support allows the head to be used in the horizontal plane for modulating vertical beams. The base plate can be removed and standard optical mounting supports employed instead if preferred.

    Model 651-1 Mechanical Dimensions


    Model 651-1 Blade Dimensions


    Model 651-1 Specifications
    Operation
    Frequency 10 Hz to 3200 Hz
    outer sector 100 Hz to 3200 Hz
    inner sector 10 Hz to 320 Hz
    Control
    manual Digital push-button
    external Application of 0.5 V to 10 V sine or squarewave, 50 Hz to 3200 Hz to EXT SYNC BNC connector
    Internal Frequency
    accuracy ±30 ppm at 25 °C
    stability ±50 ppm/ °C (range 10 °C to 30 °C)
    Jitter (measured pk-pk and presented as a % of a full cycle)
    outer sector
    100 to 200 Hz blade only: 0.2%; blade + electronics: < 7%
    200 to 400 Hz blade only: 0.2%; blade + electronics: < 4%
    400 to 2500 Hz blade only: 0.2%; blade + electronics: < 1.5%
    2500 to 3200 Hz blade only: 0.2%; blade + electronics: < 2%
    inner sector
    10 to 20 Hz blade only: 0.2%; blade + electronics: < 0.7%
    20 to 40 Hz blade only: 0.2%; blade + electronics: < 0.4%
    40 to 250 Hz blade only: 0.2%; blade + electronics: < 0.2%
    250 to 320 Hz blade only: 0.2%; blade + electronics: < 0.3%
    Lock indication green LED when locked - can be extinguished
    Settling Time <40 s nominal
    Outputs
    Sync Out 1 10 V pk-pk squarewave at outer sector chopping frequency, 50 - 3200 Hz
    Sync Out 2 10 V pk-pk squarewave at inner sector chopping frequency, 10 - 320 Hz
    Connectors BNC
    Impedance 10 kΩ. Note that although the output voltage is 10 V pk-pk, the high output impedance means that the outputs can be directly connected to the Reference Frequency input of any SIGNAL RECOVERY lock-in amplifier without causing problems.
    Power Requirements 110 V AC, 50/60 Hz or 220/240 V AC, 50/60 Hz supply. State which voltage is required when ordering
    Dimensions
    Controller 6.6" wide x 3.1" high x 9.3" deep
    (168 mm wide x 79 mm high x 236 mm deep)
    Chopper head, overall, inc. base and feet 4.8" wide x 5.9" high x 2.8" deep
    (122 mm wide x 150 mm high x 72 mm deep)
    Options Model 653A 2 m (6'6") extension cable


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