With the 320CD, only the outermost frequency is reported. Resonating choppers and shutters have extremely high stability, which can be increased with the use of appropriate drivers. Rotating optical choppers show good stability. However, short term frequency instability is phase jitter , which increases with the number of slots on the disks. Also, gear reduction increases general jitter on the chopper.
Dimensions are available for all our optical choppers and shutters.
Optical shutters are moderately small. Tuning fork choppers and long-life versions of the optical shutters offer extremely long lifetimes. It will accept as signal all types of TTL signals, all types of CMOS signals, square, sine, triangular, sawtooth, or similar waveforms from 100 mV peak to peak to 10V peak to peak. Square waves are preferred as they produce least phase jitter. Note that phase jitter can become a significant problem with the 300Synch, particularly when both master and slave are rotating choppers.