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A l l t e s t I n s t r u me n t s , I n c .
5 0 0 C e n t r a l A v e .
F a r mi n g d a l e , N J 0 7 7 2 7
P : ( 7 3 2 ) 9 1 9 - 3 3 3 9
F : ( 7 3 2 ) 9 1 9 - 3 3 3 2
a l l t e s t . n e t
s s a l e s @ a l l t e s t . n e t
T h e t e s t & me a s u r e me n t
e q u i p me n t y o u n e e d a t
t h e p r i c e y o u w a n t .
A l l t e s t c a r r i e s t h e w o r l d ' s l a r g e s t s e l e c t i o n o f
u s e d / r e f u r b i s h e d b e n c h t o p t e s t & me a s u r e me n t
e q u i p me n t a t 5 0 % t h e p r i c e o f n e w .
O O u r e q u i p me n t i s g u a r a n t e e d w o r k i n g , w a r r a n t i e d , a n d
a v a i l a b l e w i t h c e r t i f i e d c a l i b r a t i o n f r o m o u r i n - h o u s e s t a f f
o f t e c h n i c i a n s a n d e n g i n e e r s .
• 1 0 + f u l l t i me t e c h n i c i a n s w i t h o v e r 1 5 0 y e a r s o f
s p e c i a l i z a t i o n
• 9 0 d a y w a r r a n t y & 5 d a y r i g h t o f r e t u r n o n a l l
e q u i p me n t
• • 1 - 3 y e a r w a r r a n t i e s f o r n e w a n d
p r e mi u m- r e f u r b i s h e d e q u i p me n t
• E v e r y u n i t t e s t e d t o O E M s p e c i f i c a t i o n s
• S a t i s f a c t i o n g u a r a n t e e d
Y o u h a v e p l a n s , w e w i l l h e l p y o u a c h i e v e t h e m.
A n y p r o j e c t . A n y b u d g e t .
t
G e t a q u o t e t o d a y !
C C a l l ( 7 3 2 ) 9 1 9 - 3 3 3 9 o r e ma i l s a l e s @a l l t e s t . n e t .

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Summary of Contents for Tektronix YT-1

  • Page 1 T h e t e s t & me a s u r e me n t e q u i p me n t y o u n e e d a t t h e p r i c e y o u w a n t . A l l t e s t I n s t r u me n t s , I n c .
  • Page 2 Chart Recorder 070-9947-00 ST905-AD-MMC-010 0910-LP-024-4850 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...
  • Page 3 Copyright 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.
  • Page 4 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.
  • Page 6: Table Of Contents

    ........YT-1 / YT-1S Chart Recorder...
  • Page 7 ........YT-1 / YT-1S Chart Recorder...
  • Page 8: General Safety Summary

    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...
  • Page 9: Service Safety Summary

    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. YT-1 / YT-1S Chart Recorder viii...
  • Page 10: Installation And Repacking

    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.
  • Page 11 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. YT-1 / YT-1S Chart Recorder...
  • Page 12: Operating Instructions

    Operating Instructions...
  • Page 14: Instructions For Use

    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/YT-1S with the front panel to the right. 2. With your thumbs, push the frame surrounding the motor pulley.
  • Page 15 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. YT-1 / YT-1S Chart Recorder 1–2...
  • Page 16: General Information And Specifications

    General Information and Specifications...
  • Page 18: Product Description

    Domain Reflectometers). It is designed to plug into the instrument in the option port. The YT-1/YT-1S has a water resistant door that covers the record paper slot. A chart recording is a permanent record. It can be of great service in fault interpretation (e.g., a chart recording of a fault can be compared...
  • Page 19 Print element 0.12 5mm width Addressable print 384 (48 8-bit bytes) elements Print field width 48 mm Alignment of print Entire print field must lie on field paper. YT-1 / YT-1S Chart Recorder 2–2...
  • Page 20 +16 Volts ± 10%. Average +16 Volts Power = 12 W max. Peak current not to exceed 1.7 A. Mechanical Characteristics YT-1/YT-1S plugs into the parent instrument Option Port. YT-1 / YT-1S Chart Recorder 2–3...
  • Page 21 When operated in host compatibility instrument, unit meets the following requirements of MIL-STD-461A: CE02, CE04, CS02, CS06, RE02, RE02.1, RS03, RS03.1. Electrostatic dis- 3 kV to 20 kV, Tekronix charge standard 062–2862–XX Water resistance Splash-proof and drip-proof YT-1 / YT-1S Chart Recorder 2–4...
  • Page 22: Operator Performance Checks

    Operator Performance Checks...
  • Page 24 Operator Performance Checks The following checks will confirm if the YT-1/YT-1S is operating according to specification. They are found in the Chart Diagnostics Menu in the Diagnostics Menu of the parent instrument. Head Alignment Chart Diagnostic This test gives the chart recorder a rapid feed test as well as a test for print dropouts, feed spacing, and alignment of the head.
  • Page 25 All lines on the chart must be legible with no fading, smearing, or irregularities in print blackness. If your test chart does not meet the above criteria, send your chart recorder and include the test chart. YT-1 / YT-1S Chart Recorder 3–2...
  • Page 26: Accessories And Options

    Accessories and Options...
  • Page 28: Options

    Tektronix Part Number Chart paper, single roll 006–7647–00 Optional Accessories Accessory Tektronix Part Number Chart paper, 25-roll quantity 006–7677–00 Chart paper, 100-roll quantity 006–7681–00 Options There are no options for the YT-1/YT-1S Chart Recorder YT-1 / YT-1S Chart Recorder 4–1...
  • Page 29 Accessories and Options YT-1 / YT-1S Chart Recorder 4–2...
  • Page 30: Theory Of Operations

    Theory of Operations...
  • Page 32: Introduction

    Theory of Operations Introduction The YT-1/YT-1S Chart Recorder is to be used with a parent instrument, such as the 1502B/C or 1503B/C Time Domain Reflectometer. This manual contains information on the YT-1/YT-1S only. For related information on the parent instrument, see Option Port Interface in the Circuit Description section of respective service manual.
  • Page 33: Circuit Description

    The host can then move on to the next line of print data by advancing the paper. Bits will be turned on as shown: YT-1 / YT-1S Chart Recorder 5–2...
  • Page 34: Individual Write Command Operation

    (i.e., both Print Ready and Accept Data status lines are high D6 = 1, D5 = 1). Sending this command while either of these status line is disabled could cause faulty data to be printed out. YT-1 / YT-1S Chart Recorder 5–3...
  • Page 35 This write command resets the recorder to a quiescent state waiting for the host to send a command. After reset the host should still check the status lines before sending a command to insure the recorder is ready. YT-1 / YT-1S Chart Recorder 5–4...
  • Page 36: Individual Read Command Operation

    Recorder Fault (D7). Only send commands when the recorder is ready. Protocol Introduction This protocol is designed for the Tektronix YT-1/YT-1S bit map only thermal dot matrix recorder. The Tektronix YT-1/YT-1S chart recorder produces a hard copy record on thermally activated paper of data provided through a parallel digital interface.
  • Page 37: Interface Information

    Theory of Operations Interface Information The YT-1/YT-1S chart recorder communicates to the host system via the host’s address and data bus. The interface includes four address lines, eight data lines, one interrupt line, and three control lines. All interface lines are 74HC compatible.
  • Page 38 (RD). All write commands are accompanied by a low strobe at the date write line from the host (WR). YT-1 / YT-1S Chart Recorder 5–7...
  • Page 39 Latch a line of print data Address 4H Print a line and advance the paper one line Address 5H Print a line with no advance of paper Address 6H – FH Not used by recorder YT-1 / YT-1S Chart Recorder 5–8...
  • Page 40: Calibration

    Calibration...
  • Page 42: Lcd Chart Diagnostic

    1500B/C-se- ries instrument. The thermal printhead of the YT-1/YT-1S has 384 print elements. Because of power economy, not all of the elements are turned on at the same time. When printing, only 40 elements (or dots) of the printhead are activated at a time.
  • Page 43 2. When adjusted, the left Vp knob will adjust the number of dots the YT-1/YT-1S will print per segment, ranging from 13 to 41. The effect of this adjustment is subtle. 3. When adjusted, the right Vp knob will adjust the number of prints or ‘‘strikes’’...
  • Page 44: Performance Check

    If it does not, the paper still skews after a minimum of two charts, the paper guide would be adjusted. If the YT-1/YT-1S did not pass the Head Alignment Chart diagnostic, refer to the Maintenance section of this manual. Performance Check The following checks will confirm if the YT-1/YT-1S is operating according to specification.
  • Page 45 All lines on the chart must be legible with no fading, smearing, or irregularities in print blackness. SOLID LINES Equally Spaced Narrow Lines Equally Spaced Wide Lines 6 Inches 6 Inches 12 INCHES YT-1 / YT-1S Chart Recorder 6–4...
  • Page 46 Maintenance...
  • Page 48: Required Tools

    CAUTION. We recommend that service be performed at an authorized Tektronix Service Center, or by a technician skilled in digital sampling techniques. The circuit board has SMT devices that require special equipment to replace. If found defective, we recommend that the ECB be replaced as an entire unit.
  • Page 49 The outside chassis and front panel should be cleaned gently with a damp cloth. The interior of the YT-1/YT-1S is protected from dirt and dust as long as it is installed in the option port and the print door is closed.
  • Page 50: Part Removal/Replacement

    Calibration section of this manual. Parts Removal/Replacement The YT-1/YT-1S can be disassembled by following these directions in order. It can be assembled by reversing the order. Front Panel Plate 1. Remove the three mounting screws (one on the right side of the panel and two on the left) which secure the front panel to the frame.
  • Page 51 Drive Motor 7. Remove the two mounting screws that hold the motor drive assembly to the right side panel. They are located near the middle of the right side panel. YT-1 / YT-1S Chart Recorder 7–4...
  • Page 52: Troubleshooting

    12. Remove three ECB mounting screws, washers and standoffs. Case Back Spacer Case Bottom Troubleshooting Troubleshooting Flow Charts The following charts are provided to aid you in troubleshooting electrical and mechanical problems with the YT-1/YT-1S. Additional information follows the flow charts. YT-1 / YT-1S Chart Recorder 7–5...
  • Page 53 Measure resistance between P3.1 & P3.2 PRINT is pressed and between P3.3 & P3.4 Run recorder at least four times to allow Is resistance approx 10 ohms the paper to realign Replace the motor assembly YT-1 / YT-1S Chart Recorder 7–6...
  • Page 54 Replace the printhead assembly The paper will not advance Measure resistance between P3.1 & P3.2 and between P3.3 & P3.4 Is the resistance approx Replace the ECB assembly 10 ohms? Replace the motor assembly YT-1 / YT-1S Chart Recorder 7–7...
  • Page 55: Mechanical

    (see Part Removal/Re- placement in this section). Skew Adjustment 2. The two screws holding the paper guide onto the motor assembly must be loosened slightly (not too much!). Position the paper guide as follows: YT-1 / YT-1S Chart Recorder 7–8...
  • Page 56: Electrical

    Reconnect all wiring. Attach the Option Port extension cable to the parent instrument’s Option Port. Connect one end of the cable to J2010 on the parent instrument Main Board and the other end to J1 on the YT-1/YT-1S ECB. YT-1 / YT-1S Chart Recorder 7–9...
  • Page 57 Chart Recorder CCA The illustration above shows the connector locations in the YT-1/YT-1S. Each connector and the signals that should be found on them are described in the following paragraphs and tables. J1 on ECB – Data and Voltage Input...
  • Page 58 Output INTERRUPT REQUEST (active low) Not used Input RECORDER SELECT (active low) Input DATA READ (active low) Input DATA WRITE (active low) In/Out Data Line 0 (active high) In/Out Data Line 1 (active high) YT-1 / YT-1S Chart Recorder 7–11...
  • Page 59 +5 VDC ± 0.5 V +5 VDC ± 0.5 V J3 on ECB – Motor Drive Connector J3, Pin No. Data Present 16 V Data Stream 16 V Data Stream 16 V Data Stream 16 V Data Stream YT-1 / YT-1S Chart Recorder 7–12...
  • Page 60: Shipping Instructions

    2. Cushion the instrument on all sides by tightly packing dunnage or urethane foam between carton and instrument, allowing three inches on all sides. 3. Seal carton with shipping tape or industrial stapler. YT-1 / YT-1S Chart Recorder 7–13...
  • Page 61 Maintenance YT-1 / YT-1S Chart Recorder 7–14...
  • Page 62: Replaceable Parts

    Replaceable Parts...
  • Page 64: Parts Ordering Information

    Replaceable Parts List This section contains a list or replaceable modules in the YT-1/YT-1S. Use this list to identify and order replacement parts. Parts Ordering Information Replacement parts information is available from your Tektronix Service Center or representative. Parts can be ordered through your local Tektronix field office.
  • Page 65 Replaceable Parts Module Repair You may ship the defective module to Tektronix for repair. We will repair and return the same module to you. New Modules New modules can be purchased like other replacement parts. Using the Replaceable Parts List The tabular information in the parts list is arranged for easy use.
  • Page 66 14150 SC KARL BRAUN DR BEAVERTON OR 97007–0001 Replaceable Electrical Assemblies Tektronix Serial No. Name & Description Mfg. Mfr. Part Part No. Effective Dscont Code 118–7614–02 CIRCUIT BD ASSY:CONTROLLER W/ HARNESS 54318 32001–001 118–7616–01 PRINTHEAD ASSY:THERMAL 54318 30995–014 YT-1 / YT-1S Chart Recorder 8–3...
  • Page 67 118–7624–02 . GASKET:YT-1/YT-1S 54318 22769–000 –––– –––– THERMAL PRINTHEAD ASSY:SEE A2 REPL 174–3241–00 CABLE ASSY:CHART RECORDER PRINT 54318 22745–952 118–7619–00 SPRING:COMPRESSION 54318 10475–001 118–7631–00 BLOCK:SPRING SUPPORT 54318 12541–001 214–4728–00 BELT,TIMING:1/8 INCH WIDE 54318 22110–048 YT-1 / YT-1S Chart Recorder 8–4...
  • Page 68 Replaceable Parts YT-1 / YT-1S Chart Recorder 8–5...
  • Page 69 Replaceable Parts YT-1 / YT-1S Chart Recorder 8–6...

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