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DCH-60 Driver
DCH-60-PC  DCH-60-110/220
  • Specially designed for CH60 and CH61
  • External clock input
  • High frequency stability (to 0.005%)
  • Set to closed or open postion


optical modulators
resonant (fixed frequency) choppers
choppers / shutters
rotating wheel (variable frequency) choppers
Pockels cells
a-o modulators
e-o modulators
beam deflectors

shutters and filters
laser safety (interlock) shutters
shutters / choppers
filter selectors
tunable filters
choppers / shutters

modulating systems
chopping systems locked to ext. clock
chopping systems locked in master/slave mode
a-o systems
e-o systems

scanners and deflectors
resonant (fixed frequency) scanners
beam deflectors
a-o deflectors

scanning systems
scanners locked to an external clock signal
scanning systems to generate
a circle or an ellipse
or Locked in Phase or Out of Phase

scanning systems to generate
a Raster Scan or Lissajous Patterns

X,Y raster scanning systems
2-axis deflectors
e-o scanning systems

ED Driver
AGC Driver
PLD-1C Driver
PLD-1S Driver
PLD-2C Driver
PLD-2S Driver
PLD-2SXY Driver
PLD-XYG Driver
DCH-40 Driver
DCH-50 Driver
DCH-60 Driver
DSH-10 Driver
DSH-20 Driver

other products
Filter selectors
Rotating Wheel Optical Choppers
photo diode amplifiers
o/e and e/o converters
fiber optic multiplexers
fiber optic video links
laser vibrometers
Photodiode Transimpedance Amplifier
Analog / digital fiber links
Optical time domain reflectometers
Optical spectrum detectors
Tuneable laser sources
Variable optical attenuators
Loss test sets
Fiber optic power meters
Light sources
Visual fault locators
Video probes
Fiber identifiers

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The DCH-60 driver can operate either the CH-60 or CH-61 Optical Shutter/Choppers. The DCH-60 driver has two modes of operation: "internal" and "external" mode (the mode of operation is set by the clock select switch).

In the internal mode, an internal oscillator circuit controls the CH-60 chopper. The frequency of the oscillator is controlled by a frequency trim pot. Turning the trim pot will set a frequency anywhere in the range of 1.5Hz to 50Hz. The frequency stability in this mode is about 0.5%.

In the external mode, the chopper is controlled by an external TTL level clock input supplied by the user. This clock signal is connected to the external clock input connector and the clock select switch is set to the external position. In this mode, the frequency stability is determined by the stability of the external clock input. If the clock has a stability of 0.005%, this will also be the stability of the chopper.

THE DCH-60 DRIVER CONFIGURATION: The DCH-60 Driver is available in two configurations:
Model DCH-60-PC: A board level driver
Model DCH-60-110/220: A cased driver, 5.3" × 5.3" × 2" operating from a line voltage of 110V ac or 220V ac

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