Summary of Contents for Terahertz Technologies C-995
- Page 1 C-995 Optical Chopper Operating Manual Terahertz Technologies Inc. 169 Clear Road Oriskany, New York 13424 Tel: (315) 736-3642 Fax: (315) 736-4078 Copyright 2003 Terahertz Technologies Inc.
-
Page 2: Table Of Contents
Topic Page GENERAL INFORMATION Introduction..................Specifications..................Unpacking and Inspection..............Power Requirements................OPERATING INSTRUCTIONS Operation....................Serial Port ..................... Operating Considerations..............WARRANTY INFORMATION Repair Information................Limited Warranty................... -
Page 3: Introduction
KHz. The controller is then used to read the frequency of the external clock. The C-995 chopping head is attached to the controller by means of a 10 foot coiled cord. The precision etched blade is fully enclosed for protection from inadvertent damage. -
Page 4: Specifications
Specifications Frequency Range:........4.0 to 500 Hz (using inner aperture) 40 to 5000 Hz (using outer aperture) Frequency Accuracy:........0.01 % of setting Frequency Stability (Internal Clock):..+ 25 ppm over temperature range Frequency setting resolution...... 0.1 Hz - high speed range 0.01 Hz - low speed range 0.001 Hz - both ranges via Rs-232 port Phase Jitter:.......... -
Page 5: Unpacking And Inspection
Upon filing a claim TTI should be notified. Power Requirements The C-995 is equipped with a universal power supply that works anywhere in the world. The input range is from 85 to 260 V.A.C., 40 - 400 Hz. Both legs of the power line are switched and fused for safety. -
Page 6: Operation
Operation After unpacking and inspecting the instrument, attach the rod and stand to the chopper head by screwing in the 8-32 threaded screw into the appropriate hole in the chopper head.. Adjust the height of the chopper head as needed. (The inner aperture should be used for the Low speed range and the outer aperture for the High speed range.) Connect the chopper head to the controller with the coil cord provided. -
Page 7: Serial Port
Setting the chopping rate via the Serial Port The C-995 is equipped with a bi-directional “three-wire” Rs-232c interface. It permits the unit to be remotely controlled via an external computer and will report the unit’s status on request. An interface cable is supplied with each unit. Plug the Rj-14 (telephone style) connector into the port on the unit’s rear panel. - Page 8 Ensure that the clock frequency is appropriate for the range in use, i.e. 4 - 500 Hz for the Low speed range and 40 - 5000 Hz for the High speed range. The C-995 chopping rate will now be phase-locked to this external clock and will track it. The display will count the external frequency and display it to a resolution of 0.1 Hz in...
-
Page 9: Operating Considerations
Operating Considerations The C-995 utilizes a precision Swiss-made DC motor. Motors do however, have a finite lifetime. It is thus recommended that the motor be used at the lowest speed that provides the needed chopping rate. For example, if a chopping rate of 400 Hz is desired, it is preferable to run the unit at the bottom of the High Frequency Range rather than at the top end of the Low Frequency Range. -
Page 10: Repair Information
Warranty And Repair Information REPAIR INFORMATION Products manufactured by Terahertz Technologies Inc. are designed and manufactured to provide reliable performance. However, in the event that service is required, both telephone technical assistance and factory repair services are available. Call (315) 736-3642, fax (315) 736-4078, or e-mail tti@borg.com for information.