EOPC - Resonant Optical Choppers Locked to an External Clock

	ELECTRO-OPTICAL PRODUCTS CORPORATION



	88-65 76th Avenue • Glendale, NY 11385, USA • Tel: 718-997-8100 • Fax: 718-997-8102 • www.eopc.com

Resonant Optical Chopper Locked to an External Clock

PLD-1C PLD-1C-PC

DESCRIPTION

CAD DRAWINGS

FEATURES AND ADVANTAGES

5 Hz to 20 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

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The PLD-1C driver phase locks any resonant chopper (type CH) to an external clock signal, to provide an ultra stable chopping beam motion [sub] system. The system can be used as a "stand alone" unit, in the laboratory, or can be incorporated into a larger instrument/system. The phase relationship to the clock is factory set to customer's requirements (0° to 360°), and is front panel adjustable in a range of +/-45° min. The driver can be a fully integrated driver with front panels controls and internal power supplies or a printed circuit board level driver. The dimensions of the cased driver are: 12" × 10" × 3.8". The PLD-1C-PC driver is a printed circuit board level driver which requires an external +/-15V DC power supply.

FRONT PANEL CONTROLS
POWER	Power switch to turn the drive "ON"
SYNC INPUT	External clock input (TTL or sine wave), BNC connector
LOCKED MODE	The chopper is 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	To adjust the phase of the chopper in relationship to the clock, +/-45°C min.
POSITION MONITOR	Chopper position output, BNC connector
AMPLITUDE CONTROL	Chopper amplitude adjustment POT
OUTPUT	Output connector to interconnect to the chopper

SPECIFICATIONS
Frequency range	5 Hz to 20 kHz
External clock signal	+/-50 PPM
External clock accuracy	100 PPM
Chopper's amplitude stability	0.01% or better
Position monitor	Analog position output
Phase adjustment range	+/-45° min.
Phase stability	0.01%
Phase relationship	Factory set to customer's specifications
Operating temperature range	0-60°C
Power input	110V ac or 220V ac, 50-60 Hz, 20W