High frequency range (2 Hz – 10.5 kHz) *
High frequency stability (<100ppm) *
Low phase jitter (<0.6° rms, 1 kHz) *
Phase shift ±180° *
External frequency capture *
Chopping on harmonics and sub-harmonics *
PC synchronization (COM è USB) *

The OCV-10kFD opto-mechanical modulator (chopper) is widely used in different optical experiments. It comprises a microprocessor control unit and precise Swiss drive. The device features harmonic and subharmonic generator, sync input and output ports, and PC USB connection.
 

    OCV-10kFD   Frequency range, Hz 2-10500   Chopping frequency with 2/100-slot blade*, Hz (2–160) / (50-8000)   Chopping frequency with 10-slot blade, Hz 20-1400   Chopping frequency with 60-slot blade, Hz 100-8000   Chopping frequency with 100-slot blade**, Hz 500-10500   Phase instability peak-to-peak (standard), º 3 (0.6)   Phase instability peak-to-peak (standard), at 1 kHz 3 (0.6)   Input/output BNC signal level TTL/CMOS   Internal generator frequency range, Hz 0.001 - 1000000   Minimum reference pulse duration, ns 45   Phase shift range, º -180 - +180   Phase shift step, º 0.1   External frequency range, Hz 4 – 1657500   External reference multiplier (harmonics) 1-255   External reference divider (subharmonics) 1-255   Controller unit dimensions, mm 255x205x85   Power supply voltage 47-63 Hz, V 110-220   Power consumption, W <30   * - the blade has 100 slots on external circle and 2 slots – on internal one. The frequency is stabilized on external circle (high frequency), but optical beam is chopped on internal one (low frequency). The phase shift range is from -180° to +180° according to the high frequency (on external circle). ** - the optical aperture with a 100-slot blade is 1.5 mm