EOPC - Resonant Optical Choppers Locked to an External Clock

	ELECTRO-OPTICAL PRODUCTS CORPORATION



	62-40 Forest Avenue, 2nd Floor • Ridgewood, NY 11385, USA • Tel: 718-456-6000 • Fax: 718-456-6050 • www.eopc.com

PLD-1C Driver Locks a Tuning Fork Chopper to an External Clock

PLD-1C PLD-1C-PC

DESCRIPTION

CAD DRAWINGS

FEATURES AND ADVANTAGES

Phase locked to an external clock input
10 Hz to 6 kHz frequency range
Both sine wave and square wave reference signals
Clock stability +/-50 PPM
0.01% phase stability
Position output
0.01% or better amplitude stability

	home optical modulators / choppers / shutters tuning fork (fixed frequency) choppers variable frequency choppers choppers / shutters rotating wheel (variable frequency) choppers optical chopping / modulating systems optical chopping systems locked to ext. clock optical chopping systems locked in master/slave mode optical SAFETY shutters laser safety (interlock) shutters X-Ray (interlock) shutters optical shutters, choppers and filters optical shutters / choppers optical choppers / shutters filter selectors optical scanners and deflectors resonant (fixed frequency) scanners beam deflectors optical scanning / deflecting systems - optical scanners locked to an external clock signal - optical scanning systems to generate a circle or an ellipse or to lock optical scanners in phase or out of phase - optical scanning systems to generate a Raster Scan or Lissajous Patterns - X,Y raster scanning systems - 2-axis deflectors drivers 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 DSH-35 Driver DSH-65 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 Data Sheets contact us careers

The PLD-1C driver phase locks any tuning fork chopper (type CH, except for the subminiature CH-25) to an external clock input. The system can be used as a "stand alone" unit or can be incorporated into a larger instrument or a system. Although thetuning fork chopper can be used in a large temperature range this driver is not recommended for use in temperature sensitive applications. To lock the chopper to an external clock signal you need to specify the exact clock frequency (to 4 decimal places). The phase relationship to the clock is factory set to customer's requirements (0° to 360°).

The PLD-1C-110 or PLD-1C-220 driver is a boxed driver for 110V or 220V (please specify). The driver has front panel controls for amplitude and phase and internal power supplies. The dimensions of the cased driver are: 12" × 10" × 3.8"
The PLD-1C-110/220 is a boxed driver with a line switch selector for operating from a line voltage of 110Vac or 220Vac.
The PLD-1C-PC driver is a printed circuit board level driver which requires an external +/-15V DC power supply.

CLOCK REQUIREMENTS

   EXTERNAL CLOCK STABILITY

   +/-50 PPM

   EXTERNAL CLOCK ACCURACY

    100 PPM

FRONT PANEL CONTROLS

   POWER

   Power switch to turn the drive "ON"

   CLOCK IN(PUT)

   External clock input (TTL or sine wave), BNC connector

   LOCKED MODE

   The chopper vanes are phase locked to the clock signal

   OSCILLATOR MODE

   The chopper is self oscillating at its resonant frequency
   (not locked to the clock input)

   PHASE CONTROL POT

   Phase adjustment of the chopper vanes in relationship to the clock, +/-45°C min.

   POSITION MONITOR

   Vanes position output, BNC connector

   AMPLITUDE CONTROL

   Chopping amplitude adjustment POT

   OUTPUT

   Output connector to interconnect to the chopper

SPECIFICATIONS

   Frequency range

    10 Hz to 16 kHz

   External clock signal

   TTL level, sine or square wave (1V PTP to 20V PTP)

   External clock stability

   +/-50 PPM

   Scanner's amplitude stability

   0.01% or better
   (not locked to the clock input)

   Position monitor

   Analog position output, +/-5V max. 1 kOhm max load

   Phase adjustment range

   +/-45° min.

   Phase stability

   0.01%

   Phase relationship

   Factory set to customer's specifications

   Operating temperature range

   Room temperature only

   Power input

   110V ac or 220V ac, 50-60 Hz, 20W

ORDERING INFORMATION:

A) CHOPPER INFORMATION:
TYPE [CH-10 or CH-20]; DUTY CYCLE[%]; VANE [B=bright or D=dark]; FREQUENCY [Hz]
Example: PART NO. CH10-90D-825. This part number specifies the model CH-10 chopper, with 90% duty cycle, dark vanes and a 825 Hz operating frequency.

B) DRIVER INFORMATION:
Per customer's specifications

CLOCK REQUIREMENTS
EXTERNAL CLOCK STABILITY	+/-50 PPM
EXTERNAL CLOCK ACCURACY	100 PPM

FRONT PANEL CONTROLS
POWER	Power switch to turn the drive "ON"
CLOCK IN(PUT)	External clock input (TTL or sine wave), BNC connector
LOCKED MODE	The chopper vanes are phase locked to the clock signal
OSCILLATOR MODE	The chopper is self oscillating at its resonant frequency (not locked to the clock input)
PHASE CONTROL POT	Phase adjustment of the chopper vanes in relationship to the clock, +/-45°C min.
POSITION MONITOR	Vanes position output, BNC connector
AMPLITUDE CONTROL	Chopping amplitude adjustment POT
OUTPUT	Output connector to interconnect to the chopper

SPECIFICATIONS
Frequency range	10 Hz to 16 kHz
External clock signal	TTL level, sine or square wave (1V PTP to 20V PTP)
External clock stability	+/-50 PPM
Scanner's amplitude stability	0.01% or better (not locked to the clock input)
Position monitor	Analog position output, +/-5V max. 1 kOhm max load
Phase adjustment range	+/-45° min.
Phase stability	0.01%
Phase relationship	Factory set to customer's specifications
Operating temperature range	Room temperature only
Power input	110V ac or 220V ac, 50-60 Hz, 20W