Instruction Manual YT-1 / YT-1S Chart Recorder 070-6270-04 NOTE: This manual is intended for YT-1/YT-1S Chart Recorders serial numbers B030500 and higher, or units that have been upgraded to that level (to identify upgrade, see page 8-5 and note frame cutout next to print head). For instruments with serial numbers B030499 and lower that have not been upgraded, please contact your local Tektronix Customer Service Representative for information regarding module exchange service. First Printing: Oct. 1998 Copyright E Tektronix, Inc. 1998. All rights reserved. Tektronix products are covered by U.S. and foreign patents, issued and pending. Information in this publication supercedes that in all previously published material. Specifications and price change privileges reserved. Printed in the U.S.A. Tektronix, Inc., P.O. Box 1000, Wilsonville, OR 97070­1000 TEKTRONIX, TEK, and YT-1 / YT-1S are registered trademarks of Tektronix, Inc. WARRANTY Tektronix warrants that this product will be free from defects in materials and workmanship for a period of one (1) year from the date of shipment. If any such product proves defective during this warranty period, Tektronix, at its option, either will repair the defective product without charge for parts and labor, or will provide a replacement in exchange for the defective product. In order to obtain service under this warranty, Customer must notify Tektronix of the defect before the expiration of the warranty period and make suitable arrangements for the performance of service. Customer shall be responsible for packaging and shipping the defective product to the service center designated by Tektronix, with shipping charges prepaid. Tektronix shall pay for the return of the product to Customer if the shipment is to a location within the country in which the Tektronix service center is located. Customer shall be responsible for paying all shipping charges, duties, taxes, and any other charges for products returned to any other locations. This warranty shall not apply to any defect, failure, or damage caused by improper use or improper or inadequate maintenance and care. Tektronix shall not be obligated to furnish service under this warranty a) to repair damage resulting from attempts by personnel other than Tektronix representatives to install, repair, or service the product; b) to repair damage resulting from improper use or connection to incompatible equipment; or c) to service a product that has been modified or integrated with other products when the effect of such modification or integration increases the time or difficulty of servicing the product. THIS WARRANTY IS GIVEN BY TEKTRONIX WITH RESPECT TO THIS PRODUCT IN LIEU OF ANY OTHER WARRANTIES, EXPRESSED OR IMPLIED. TEKTRONIX AND ITS VENDORS DISCLAIM ANY IMPLIED WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. TEKTRONIX' RESPONSIBILITY TO REPAIR OR REPLACE DEFECTIVE PRODUCTS IS THE SOLE AND EXCLUSIVE REMEDY PROVIDED TO THE CUSTOMER FOR BREACH OF THIS WARRANTY. TEKTRONIX AND ITS VENDORS WILL NOT BE LIABLE FOR ANY INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES IRRESPECTIVE OF WHETHER TEKTRONIX OR THE VENDOR HAS ADVANCE NOTICE OF THE POSSIBILITY OF SUCH DAMAGES. Table of Contents General Safety Summary Operator Safety Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Service Safety Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Installation and Repacking Unpacking and Initial Inspection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Power Source and Power Requirements . . . . . . . . . . . . . . . . . . . . . . . Repacking for Shipment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Operating Instructions Instructions for Use . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Paper Replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . General Information and Specifications Product Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Standards, Documents, and References Used . . . . . . . . . . . . . . . . . . . Characteristics and Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . Operator Performance Checks Head Alignment Chart Diagnostic and Chart Quality . . . . . . . . . . . . . Accessories and Options Standard and Optional Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . Options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Theory of Operations Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Circuit Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Individual Write Command Operation . . . . . . . . . . . . . . . . . . . . . . . . . Individual Read Command Operation . . . . . . . . . . . . . . . . . . . . . . . . . Protocol . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Interface Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Calibration LCD Chart Diagnostic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Performance Check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . vii viii ix ix ix 1-1 1-1 2-1 2-1 2-1 3-1 4-1 4-1 5-1 5-2 5-3 5-5 5-5 5-6 6-1 6-3 YT-1 / YT-1S Chart Recorder v Table of Contents Maintenance Required Tools . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Preventive Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Part Removal/Replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Mechanical . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Electrical . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Shipping Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Replaceable Parts Parts Ordering Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Electrical Replaceable Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Mechanical Replaceable Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Exploded View Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-1 7-1 7-3 7-5 7-8 7-9 7-13 8-1 8-3 8-4 8-5 vi YT-1 / YT-1S Chart Recorder General Safety Summary CAUTION. Do not operate this product without paper installed, or, if operating when the paper runs out, shut the power off immediately. Printing without paper might burn out the printhead. Operator Safety Summary Power Sources This product is intended to operate from a power source supplied by the parent instrument. Do not attempt to power this module by any other means. Grounding the Instrument This product is grounded through the parent instrument. A protective ground connection is essential for safe operation. Danger Arising From Loss of Ground Upon loss of the protective-ground connection, all accessible conductive parts (including knobs and controls that appear to be insulating) can render an electric shock. Refer to connector changes to qualified service personnel. Do Not Operate in Explosive Atmospheres To avoid explosion, do not operate this product in an explosive atmosphere unless it has been specifically certified for such operation. YT-1 / YT-1S Chart Recorder vii General Safety Summary Do Not Remove Covers or Panels To avoid personal injury, do not remove the product covers or panels. Do not operate the product without the covers and panels properly installed. Service Safety Summary CAUTION. For qualified service personnel only. Refer also to the preceding Operator Safety Summary. Do Not Service Alone Do not perform internal service adjustment of this product unless another person capable of rendering first aid and resuscitation is present. Use Care When Servicing With Power On Dangerous voltages exist at several points in this product. To avoid personal injury, do not touch exposed connections and components while power is on. Disconnect power before removing protective panels, soldering, or replacing components. viii YT-1 / YT-1S Chart Recorder Installation and Repacking Unpacking and Initial Inspection Before unpacking the YT-1/YT-1S from its shipping container or carton, inspect for signs of external damage. If the carton is damaged, notify the carrier. The shipping carton contains the basic instrument and its standard accessories. Refer to the replaceable parts list for a complete listing. If the contents of the shipping container are incomplete, if there is mechanical damage or defect, or if the instrument does not meet operational check requirements, contact your local Tektronix Field Office or representative. If the shipping container is damaged, notify the carrier as well as Tektronix. The instrument was inspected both mechanically and electrically before shipment. It should be free of mechanical damage and meet or exceed all electrical specifications. Procedures to check operational performance are in the parent instruction service manual. Procedures to check electrical and mechanical specifications are in the Calibration section of this manual. Power Source and Power Requirements The YT-1/YT-1S is intended to be operated from the parent instrument's power supply. A protective ground connection by way of proper installation in the parent instrument is essential for safe operation. Further information on the YT-1/YT-1S power requirements can be found in the Operator Safety Summary and in the Operator section. Repacking for Shipment If the YT-1/YT-1S is to be shipped to a Tektronix Service Center for service or repair, attach a tag showing the name and address of the owner, name of the individual at your firm that can be contacted, complete serial number, and a description of the service required. If YT-1 / YT-1S Chart Recorder ix Installation and Repacking the original packaging is unfit for use or is not available, repackage the instrument per the instructions near the end of the Maintenance section in this manual. x YT-1 / YT-1S Chart Recorder Operating Instructions Operating Instructions Instructions for Use Making permanent records with the 1500-Series is easy with the Tektronix YT-1/YT1-1S Digital Chart Recorder. CAUTION. Do not operate this product without paper installed, or, if operating when the paper runs out, shut the power off immediately. Printing without paper might burn out the printhead. 1. Make sure the desired waveform (or waveforms) is displayed on the LCD. 2. Slide back the protective cover on the recorder. Push PRINT on the front panel of the chart recorder. 3. When the chart recorder has finished, tear off the paper recording, pulling the paper to the left. You may prefer to close the door prior to tearing off the chart to facilitate a cleaner tear. Making chart recordings with the YT-1/YT1-1S will reduce the charge of the battery pack (if so equipped) in the parent instrument. Read the appropriate battery information in the parent instrument Operator section. Paper Replacement 1. Turn the knurled knob on the front panel of the chart recorder counter-clockwise until it loosens. Pull the unit from the parent instrument. Set the YT-1/YT1-1S with the front panel to the right. 2. With your thumbs, push the frame surrounding the motor pulley. Push until the motor assembly latch locks the motor assembly to the side frame. This loosens the tension in the paper path, allowing any remaining paper to be removed. 3. Remove the paper retaining knob. Remove any paper and the empty paper core. YT-1 / YT-1S Chart Recorder 1­1 Operating Instructions 4. Following the diagram on the top of the recorder, place a fresh roll of paper in the recorder so the paper unwinds off the right side of the roll into the paper path (looking down on the recorder, the paper unrolls clockwise). Tearing the end of the paper roll on a slant will facilitate placing the paper in the slot. 5. Assure that the paper drops down into the paper path without binding, and the paper protrudes through the slot in the front of the instrument. Release the keeper from the frame, and the paper drive mechanism will return to the operating position. 1­2 YT-1 / YT-1S Chart Recorder General Information and Specifications General Information and Specifications Product Description The Tektronix YT-1/YT-1S Chart Recorder is an optional accessory for a parent instrument (e.g., the 1500B/C-series Metallic Time Domain Reflectometers). It is designed to plug into the instrument in the option port. The YT-1/YT-1S has a water resistant ...