Service Manual
DTG5078 & DTG5274 & DTG5334
Data Timing Generators
071-1615-00
This document applies to firmware version 2.0.0
and above.
www.tektronix.com
Copyright © Tektronix, Inc. 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.
Tektronix, Inc., P.O. Box 500, Beaverton, OR 97077-0001
TEKTRONIX and TEK are registered trademarks of Tektronix, Inc.
WARRANTY 2
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. Parts, modules and replacement products used by Tektronix for warranty work
may be new or reconditioned to like new performance. All replaced parts, modules and products become the property
of Tektronix.
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; c) to repair any damage or
malfunction caused by the use of non-Tektronix supplies; or d) 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 THE PRODUCT IN LIEU OF ANY
OTHER WARRANTIES, EXPRESS 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
Specifications
Operating Information
General Safety Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . vii
Service Safety Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ix
Preface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xi
Manual Structure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xi
Manual Conventions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xii
Finding Other Information. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xii
Contacting Tektronix . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xiii
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xv
Performance Verification Procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xv
Strategy for Servicing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xv
Tektronix Service Offerings. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xvi
Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1
Product Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1
Models . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1
Key Features. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1
Mainframe and Output Module Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-4
Product Software . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-5
Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-7
Supplying Operating Power. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-8
Checking the Environment Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-10
Output Module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-11
Powering On the Data Timing Generator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-12
Shutting Down the Data Timing Generator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-13
Creating an Emergency Rescue Disk. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-15
Backing Up User Files . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-17
Installing Software . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-17
Operating Basics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-19
Front Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-19
Front Panel Controls . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-21
Front Panel Connectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-24
Rear Panel Connectors. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-27
Display Area and Application Windows . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-32
Using the Menu System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-35
Theory of Operation
Theory of Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1
Interconnect Diagrams . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1
Block Diagrams . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-7
DTG5078 & DTG5274 & DTG5334 Data Timing Generators Service Manual i
Table of Contents
Performance Verification
Performance Verification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1
Adjustment Procedures
Adjustment Procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-1
Maintenance
Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-1
Related Maintenance Procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-1
Preparation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-2
Inspection and Cleaning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-3
Removal and Installation Procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-7
Preparation for Use . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-7
Access Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-13
Procedures for External Modules . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-14
Procedures for Internal Modules (Lower). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-30
Procedures for Internal Modules (Upper) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-40
Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-45
Troubleshooting tree . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-45
Diagnostics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-53
System Recovery . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-73
Requirements for System Recovery . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-73
Operating Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-73
Service Password . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-77
Enable the Service mode. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-77
Serial number registration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-78
Replaceable Electrical Parts
Electrical Parts List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-1
Diagrams
Diagrams . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-1
Replaceable Mechanical Parts
Replaceable Mechanical Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-1
Parts Ordering Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-1
Using the Replaceable Parts List. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-2
ii DTG5078 & DTG5274 & DTG5334 Data Timing Generators Service Manual
List of Figures
Table of Contents
Figure 2-1: Principal power switch and AC power connector . . . . . . . . . . . . . . 2-12
Figure 2-2: On/Standby switch location . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-12
Figure 2-3: Front panel (DTG5078) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-19
Figure 2-4: Front panel (DTG5274, DTG5334) . . . . . . . . . . . . . . . . . . . . . . . . . . 2-20
Figure 2-5: Front panel controls . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-21
Figure 2-6: Front panel connectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-24
Figure 2-7: Rear panel (DTG5078) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-27
Figure 2-8: Rear panel connectors (1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-28
Figure 2-9: Rear panel connectors (DTG5078) (2) . . . . . . . . . . . . . . . . . . . . . . . 2-29
Figure 2-10: Screen elements just after the power on . . . . . . . . . . . . . . . . . . . . . 2-32
Figure 2-11: Toolbar . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-34
Figure 2-12: Status bar . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-35
Figure 2-13: Menu selection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-35
Figure 2-14: Window operation: Time Base window . . . . . . . . . . . . . . . . . . . . . 2-37
Figure 3-1: DTG5078 interconnection diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-4
Figure 3-2: DTG5274 interconnection diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-5
Figure 3-3: DTG5334 interconnection diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-6
Figure 3-4: DTG5078 block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-8
Figure 3-5: DTG5274 block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-9
Figure 3-6: DTG5334 block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-10
Figure 6-1: Instrument orientation (DTG5078) . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-9
Figure 6-2: External modules . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-10
Figure 6-3: Front-Panel assembly & Display assembly . . . . . . . . . . . . . . . . . . . . 6-11
Figure 6-4: Internal modules (Lower) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-12
Figure 6-5: Internal modules (Upper) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-12
Figure 6-6: Output Module removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-15
Figure 6-7: Modules on the rear panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-16
Figure 6-8: Loosen the screws . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-16
Figure 6-9: CD-ROM module removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-17
Figure 6-10: Loosen the screws . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-17
Figure 6-11: Hard Disk drive removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-18
Figure 6-12: Loosen the screws . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-19
Figure 6-13: Cabinet removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-20
Figure 6-14: Remove the screws . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-21
Figure 6-15: Front-Panel assembly removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-22
Figure 6-16: Front-Panel assembly removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-23
Figure 6-17: FD drive removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-23
Figure 6-18: Front-panel chassis removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-24
Figure 6-19: A20 Front Key & DC Output board removal . . . . . . . . . . . . . . . . 6-25
Figure 6-20: A22 Power Switch Board removal . . . . . . . . . . . . . . . . . . . . . . . . . . 6-26
Figure 6-21: Display assembly removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-27
Figure 6-22: Inverter board removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-28
Figure 6-23: Fan removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-29
Figure 6-24: Support bracket removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-30
Figure 6-25: Unplug the cables and connectors (DTG5078) . . . . . . . . . . . . . . . . 6-31
Figure 6-26: Unplug the cables and connectors (DTG5274) . . . . . . . . . . . . . . . . 6-32
DTG5078 & DTG5274 & DTG5334 Data Timing Generators Service Manual iii
Table of Contents
Figure 6-27: Unplug the cables and connectors (DTG5334) . . . . . . . . . . . . . . . . 6-33
Figure 6-28: Plug-In Box removal (DTG5078 & DTG5274) . . . . . . . . . . . . . . . . 6-34
Figure 6-29: Plug-In Box removal (DTG5334) . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-35
Figure 6-30: Unplug the cables and connectors . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-36
Figure 6-31: 16 screws . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-38
Figure 6-32: Power supply removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-40
Figure 6-33: A10 Connector & PCI Interface board removal . . . . . . . . . . . . . . . 6-41
Figure 6-34: A10 Connector & PCI Interface board removal . . . . . . . . . . . . . . . 6-42
Figure 6-35: Compact PCI Frame removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-43
Figure 6-36: A30 Compact PCI Backplane removal . . . . . . . . . . . . . . . . . . . . . . . 6-44
Figure 6-37: Primary troubleshooting procedure (1) . . . . . . . . . . . . . . . . . . . . . . 6-46
Figure 6-38: Primary troubleshooting procedure (2) . . . . . . . . . . . . . . . . . . . . . . 6-47
Figure 6-39: Primary troubleshooting procedure (3) . . . . . . . . . . . . . . . . . . . . . . 6-48
Figure 6-40: Troubleshooting procedure B - Display section . . . . . . . . . . . . . . . 6-48
Figure 6-41: Troubleshooting procedure A - Power Supply and
A10 board section . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-49
Figure 6-42: Test point on the A10 Connector board . . . . . . . . . . . . . . . . . . . . . . 6-50
Figure 6-43: Diagnostics dialog box . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-54
Figure 6-44: Diagnostics error code format . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-58
Figure 6-45: Service Password dialog box . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-77
Figure 6-46: Set Serial Number dialog box . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-78
Figure 9-1: Main Chassis (1) (DTG5078) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-5
Figure 9-2: Main Chassis (1) (DTG5274) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-7
Figure 9-3: Main Chassis (1) (DTG5334) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-9
Figure 9-4: Main Chassis (2) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-11
Figure 9-5: Main Chassis & Cabinet . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-12
Figure 9-6: A30 & Compact PCI Frame . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-13
Figure 9-7: Power Supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-15
Figure 9-8: Floppy Disk Drive . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-16
Figure 9-9: A10 Connector & PCI Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-17
Figure 9-10: A32 CDROM Extender . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-18
Figure 9-11: CPU Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-19
Figure 9-12: Front Panel (DTG5078) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-21
Figure 9-13: Front Panel (DTG5274) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-23
Figure 9-14: Front Panel (DTG5334) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-25
Figure 9-15: Cabinet . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-27
Figure 9-16: Plug-In Box (DTG5078) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-28
Figure 9-17: Plug-In Box (DTG5274) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-29
Figure 9-18: Plug-In Box (DTG5334) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-30
Figure 9-19: Blank Plug-In . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-31
Figure 9-20: DTGM10 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-33
Figure 9-21: DTGM20 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-35
Figure 9-22: DTGM21 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-37
Figure 9-23: DTGM30 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-39
Figure 9-24: DTGM31 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-41
Figure 9-25: DTGM32 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-43
Figure 9-26: Op 1R (Rack Mount) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-44
iv DTG5078 & DTG5274 & DTG5334 Data Timing Generators Service Manual
List of Tables
Table of Contents
Table 2-1: DTG5000 series key features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2
Table 2-2: DTG5000 series Output module key features . . . . . . . . . . . . . . . . . . . 2-3
Table 2-3: Current consumption coefficient . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-4
Table 2-4: Power cord identification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-9
Table 2-5: Operating requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-10
Table 2-6: Front panel controls . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-21
Table 2-7: Front panel connectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-24
Table 2-8: Rear panel connector (1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-28
Table 2-9: Rear panel connectors (2) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-29
Table 2-10: Menu selection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-36
Table 2-11: Time Base Window operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-37
Table 2-12: Example of Numeric Keys input . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-38
Table 2-13: Example of Numeric Keys input . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-39
Table 2-14: Selecting a file . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-40
Table 2-15: Key operations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-41
Table 6-1: External inspection check list . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-4
Table 6-2: Internal inspection check list . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-5
Table 6-3: Tools required for module removal . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-8
Table 6-4: Performance Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-51
Table 6-5: Diagnostics dialog box buttons . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-54
Table 6-6: Information on Status . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-57
Table 6-7: Category of the Diagnostics Error Code . . . . . . . . . . . . . . . . . . . . . . 6-59
Table 6-8: Error Codes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-60
DTG5078 & DTG5274 & DTG5334 Data Timing Generators Service Manual v
Table of Contents
vi DTG5078 & DTG5274 & DTG5334 Data Timing Generators Service Manual
General Safety Summary
Review the following safety precautions to avoid injury and prevent damage to this
product or any products connected to it. To avoid potential hazards, use this
product only as specified.
Only qualified personnel should perform service procedures.
To Avoid Fire or
Personal Injury
Use Proper Power Cord. Use only the power cord specified for this product and
certified for the country of use.
Ground the Product. This product is grounded through the grounding conductor of
the power cord. To avoid electric shock, the grounding conductor must be
connected to earth ground. Before making connections to the input or output
terminals of the product, ensure that the product is properly grounded.
Observe All Terminal Ratings. To avoid fire or shock hazard, observe all ratings and
markings on the product. Consult the product manual for further ratings
information before making connections to the product.
The common terminal is at ground potential. Do not connect the common terminal
to elevated voltages.
Do not apply a potential to any terminal, including the common terminal, that
exceeds the maximum rating of that terminal.
Do Not Operate Without Covers. Do not operate this product with covers or panels
removed.
Avoid Exposed Circuitry. Do not touch exposed connections and components when
power is present.
Do Not Operate With Suspected Failures. If you suspect there is damage to this
product, have it inspected by qualified service personnel.
Do Not Operate in Wet/Damp Conditions.
Do Not Operate in an Explosive Atmosphere.
Keep Product Surfaces Clean and Dry.
Provide Proper Ventilation. Refer to the manual’s installation instructions for
details on installing the product so it has proper ventilation.
DTG5078 & DTG5274 & DTG5334 Data Timing Generators Service Manual vii
General Safety Summary
Symbols and Terms
Terms in this Manual. These terms may appear in this manual:
WARNING. Warning statements identify conditions or practices that could result in
injury or loss of life.
CAUTION. Caution statements identify conditions or practices that could result in
damage to this product or other property.
Terms on the Product. These terms may appear on the product:
DANGER indicates an injury hazard immediately accessible as you read the
marking.
WARNING indicates an injury hazard not immediately accessible as you read the
marking.
CAUTION indicates a hazard to property including the product.
Symbols on the Product. The following symbols may appear on the product:
WAR NING
High Voltage
Protective Ground
(Earth) Terminal
CAUTION
Refer to Manual
Double
Insulated
viii DTG5078 & DTG5274 & DTG5334 Data Timing Generators Service Manual
Service Safety Summary
DTG5000 Series only qualified personnel should perform service procedures.
Read this Service Safety Summary and the General Safety Summary before
performing any service procedures.
Do Not Service Alone. Do not perform internal service or adjustments of this
product unless another person capable of rendering first aid and resuscitation is
present.
Disconnect Power. To avoid electric shock, disconnect the mains power by means
of the power cord or, if provided, the power switch.
Use Care When Servicing With Power On. Dangerous voltages or currents may exist
in this product. Disconnect power, remove battery (if applicable), and disconnect
test leads before removing protective panels, soldering, or replacing components.
To avoid electric shock, do not touch exposed connections.
Calendar (date and time) Backup Battery. This product contains a
Lithium:poly-carbon mono fluoride battery for calendar backup purposes. This
battery is part of the CPU unit and is not replaceable.
DTG5078 & DTG5274 & DTG5334 Data Timing Generators Service Manual ix
Service Safety Summary
x DTG5078 & DTG5274 & DTG5334 Data Timing Generators Service Manual
Preface
Manual Structure
This manual provides information necessary for service technicians to service the
DTG5000 Series Data Timing Generator to the module level.
This manual is divided into sections, such as Specifications and Theory of
Operation. Further, some sections are divided into subsections, such as Product
Description and Removal and Installation Procedures.
Sections containing procedures also contain introductions to those procedures. Be
sure to read these introductions because they provide information needed to do the
service correctly and efficiently. The following contains a brief description of each
manual section.
Operating Information includes general information and operating
instructions.
Theory of Operation contains circuit descriptions that support service to the
module level.
Adjustment Procedures contains information that you need to manually adjust
the data timing generator so that it meets specifications.
Maintenance contains information and procedures for performing preventive
and corrective maintenance of the data timing generator. These instructions
include cleaning, module removal and installation, and fault isolation to the
module.
Replaceable Electrical Parts contains a statement referring you to Replaceable
Mechanical Parts, where both electrical and mechanical modules are listed.
Diagrams contains block diagrams and an interconnection diagram.
Replaceable Mechanical Parts includes a table of all replaceable modules,
their descriptions, and their Tektronix part numbers.
DTG5078 & DTG5274 & DTG5334 Data Timing Generators Service Manual xi
Preface
Manual Conventions
This manual uses certain conventions that you should become familiar with.
Some sections of the manual contain procedures for you to perform. To keep those
instructions clear and consistent, this manual uses the following conventions:
Front-panel controls and menu names appear in the same case (initial capitals,
all uppercase, and so on) in the manual as is used on the data timing generator
front-panel and menus. Front-panel labels are all upper case letters (for
example, MENU, SELECT, PULSE GEN, and so on).
Instruction steps are numbered unless there is only one step.
Modules
Throughout this manual, any replaceable component, assembly, or part of the data
timing generator is referred to generically as a module. In general, a module is an
assembly (like a circuit board), rather than a component (like a resistor or an
integrated circuit). Sometimes a single component is a module; for example, the
chassis of the data timing generator is a module.
Safety
Symbols and terms related to safety appear in the Safety Summary near the
beginning of this manual.
Finding Other Information
This manual mainly focuses on the troubleshooting and maintenance of the data
timing generator. See the following list for other documents supporting the data
timing generator operation. All documents are on the DTG5000 Series Product
Documents CD-ROM that shipped with instrument.
Document name Description
DTG5000 Series Technical Reference for
Performance Verification & Specifications
DTG5000 Series User Manual 1 A quick reference to major features of the instrument and how they operate. It also provides
DTG5000 Series User Manual 2 A reference provides an encyclopedia of topics that describe the data timing generator
DTG5000 Series Programmer Manual Provides complete information on programming commands and remote control of the
DTG5000 Series Online Help An online help system, integrated with the User Interface application that ships with this
Describes how to verify the performance of the data timing generator and lists its
specifications. (Product Documents CD)
several tutorials to familiarize the user with basic instrument features. (Product Documents
CD)
interface and features, and gives background information on how to use them. (Product
Documents CD)
instrument. (Product Documents CD)
product. The help is preinstalled in the instrument.
xii DTG5078 & DTG5274 & DTG5334 Data Timing Generators Service Manual
Contacting Tektronix
Preface
Phone 1-800-833-9200*
Address Tektronix, Inc.
Department or name (if known)
14200 SW Karl Braun Drive
P.O. Box 500
Beaverton, OR 97077
USA
Web site www.tektronix.com
Sales support 1-800-833-9200, select option 1
Service support 1-800-833-9200, select option 2*
Technical support Email: techsupport@tektronix.com
1-800-833-9200, select option 3
6:00 a.m. - 5:00 p.m. Pacific time
* This phone number is toll free in North America. After office hours, please leave
a voice mail message.
Outside North America, contact a Tektronix sales office or distributor; see the
Tektronix web site for a list of offices.
*
*
DTG5078 & DTG5274 & DTG5334 Data Timing Generators Service Manual xiii
Preface
xiv DTG5078 & DTG5274 & DTG5334 Data Timing Generators Service Manual
Introduction
This manual contains information that is needed to properly service the DTG5000
Series Data Timing Generator as well as general information that is critical to safe
and effective servicing.
To prevent personal injury or damage to the data timing generator, consider the
following before attempting service:
The procedures in this manual should be performed only by a qualified service
person.
Read the General Safety Summary on page vii and the Service Safety Summary,
beginning on page ix.
Read Installation in Operating Information.
When using this manual for servicing, be sure to follow all warnings, cautions, and
notes.
Performance Verification Procedures
Strategy for Servicing
The performance check should be done every 12 months. In addition, a
performance check is recommended after module replacement. The performance
check procedures for this instrument are on the DTG5000 Series Product
Documents CD-ROM (Tektronix part number 063-3883-xx) that shipped with
your product. Look for the DTG5000 Series Technical Reference for Performance
Verification & Specifications PDF on this disk.
If the data timing generator does not meet performance criteria, repair is necessary.
Throughout this manual, the term, module, refers to any field-replaceable
component, assembly, or part of the data timing generator.
This manual contains the information needed for periodic maintenance of the data
timing generator. Further, it contains information for corrective maintenance down
to the module level. To isolate a failure to a module, use the troubleshooting
procedures found in the Maintenance section. To remove and replace any failed
module, follow the instructions in the Removal and Installation Procedures
subsection. After isolating a faulty module, replace it with a fully-tested module
obtained from the factory. The Replaceable Mechanical Parts section contains part
number and ordering information for all replaceable modules.
DTG5078 & DTG5274 & DTG5334 Data Timing Generators Service Manual xv
Introduction
Tektronix Service Offerings
Tektronix provides service to cover repair under warranty as well as other services
that may provide a cost-effective answer to your service needs.
Whether providing warranty repair service or any of the other services listed
below, Tektronix service technicians are well trained to service the data timing
generator. They have access to the latest information on improvements to the
DTG5000 Series as well as new options.
Warranty Repair Service
Self Service
Tektronix warrants this product for one year from date of purchase. The warranty
appears at the front of this manual. Tektronix technicians provide warranty service
at most Tektronix service locations. The Tektronix product catalog lists all
worldwide service locations.
Tektronix supports repair to the module level by providing Module Exchange.
Module Exchange. This service reduces down-time for repair by allowing you to
exchange most modules for remanufactured ones. Each module comes with a
90-day service warranty.
For More Information. Contact your local Tektronix service center or sales engineer
for more information on any of the repair or adjustment services just described.
xvi DTG5078 & DTG5274 & DTG5334 Data Timing Generators Service Manual
Specifications
Specifications
The specifications for this instrument are now available on the DTG5078 &
DTG5274 & DTG5334 Performance Verification & Specifications Technical
Reference (Tektronix part number 071-1611-xx). A PDF of this technical reference
is provided on the DTG5000 Series Product Documents CD-ROM (Tektronix part
number 063-3833-xx) that shipped with your product.
DTG5078 & DTG5274 & DTG5334 Data Timing Generators Service Manual 1-1
Specifications
1-2 DTG5078 & DTG5274 & DTG5334 Data Timing Generators Service Manual
Operating Information
Product Description
This section describes the key features of the DTG5000 Series Data Timing
Generators and their Output modules.
Models
This manual supports the following data timing generators:
DTG5078 Data Timing Generator
DTG5274 Data Timing Generator
DTG5334 Data Timing Generator
The differences between the data timing generators will be called out when
necessary; otherwise, the material applies to all data timing generators. The term
“data timing generator” refers to all of the products.
Key Features
The DTG5000 Series Data Timing Generator is a high-speed, multichannel signal
generator that creates a wide range of digital timing signals. The products are
designed to generate a data pattern for standard and nonstandard pulses necessary
for functional tests or characterization of legacy devices (TTL, CMOS, ECL) as
well as the latest devices (PECL, LVDS, GTL, CML).
Use the DTG5000 series to insert glitches and jitter as needed, and easily create
patterns for device stress testing. In addition, to shorten testing time, use the
sequence function to create signal sequences from combinations of various
patterns.
The DTG5000 Series Data Timing Generator supports six types of output modules
(DTGM10, DTGM20, DTGM21, DTGM30, DTGM31 and DTGM32). Table 2-1
lists the key features of the data timing generators, and Table 2-2 lists the key
features of the output modules.
DTG5078 & DTG5274 & DTG5334 Data Timing Generators Service Manual 2-1
Product Description
Table 2-1: DTG5000 series key features
DTG5078 DTG5274 DTG5334
Maximum clock
frequency/Maximum data rate
Number of slots 8 (A, B, C, D, E, F, G, and H) 4 (A, B, C, and D) 4 (A, B, C, and D)
Pattern length 240 to 8,000,000 words/channel 960 to 32,000,000 words/channel 960 to 64,000,000 words/channel
Block size
granularity
Sequence steps 1 to 8,000 steps 1 to 8,000 steps 1 to 8,000 steps
Sequence
repeat counter
Master-Slave Up to three (one Master, two Slaves) Up to two (one Master, one Slave) Up to two (one Master, one Slave)
Data Generator
Mode
Data format
Slot A to D NRZ, RZ, and R1 NRZ, RZ, and R1 NRZ, RZ, and R1
Slot E to H NRZ
Data rate
RZ and R1 50 kb/s to 375 Mb/s 50 kb/s to 1.35 Gb/s 50 kb/s to 1.675 Gb/s
Channel addition Slot A, B, C, and D Slot A, B, C, and D Slot A, B, C, and D
Jitter generation Channel 1 of slot A Channel 1 of slot A Channel 1 of slot A
Lead delay
resolution
Trail delay
resolution
Pulse width
resolution
Pulse Generator
Mode
Clock frequency 50 kHz to 375 MHz 50 kHz to 1.35 GHz 50 kHz to 1.675 GHz
750 MHz/750 Mb/s 2.7 GHz /2.7 Gb/s 3.35 GHz /3.35 Gb/s
1 1 to 4 (depends on Vector Rate) 1 to 4 (depends on Vector Rate)
1 to 65,536 or Infinite 1 to 65,536 or Infinite 1 to 65,536 or Infinite
Slot A, B, C, D, E, F, G, and H Slot A, B, C, and D Slot A, B, C, and D
NRZ 50 kb/s to 750 Mb/s 50 kb/s to 2.7 Gb/s 50 kb/s to 3.35 Gb/s
1 ps 0.2 ps 0.2 ps
5 ps 5 ps 5 ps
5 ps (slot A, B, C, and D) 5 ps (slot A, B, C, and D) 5 ps (slot A, B, C, and D)
Slot A, B, C, and D Slot A, B, C, and D Slot A, B, C, and D
2-2 DTG5078 & DTG5274 & DTG5334 Data Timing Generators Service Manual
Product Description
Table 2-2: DTG5000 series Output module key features
DTGM10 DTGM20 DTGM21 DTGM30 DTGM31 DTGM32
Number of channels 444211
Number of
available channels
DTG5078444211
DTG5274 2 (CH1, CH2) 2 (CH1, CH2) 2 (CH1, CH2) 2 1 1
DTG5334 2 (CH1, CH2) 2 (CH1, CH2) 2 (CH1, CH2) 2 1 1
Amplitude (50 Ω) 3.5 V
Amplitude
10 V
p-p
p-p
3.5 V
7 V
p-p
p-p
(1 MΩ)
Rise time/ fall
time at 1 V
p-p
into
<540 ps
(variable)
<340 ps
(variable)
50 Ω
(20% to 80%)
Hi Z Control yes
External Jitter
Input
3.90 V
5.35 V
7.81 V
p-p
p-p
p-p
(50 Ω)
(23 Ω)
1.25 V
2.5 V
p-p
p-p
1.25 V
2.5 V
p-p
p-p
1.25 V
2.5 V
p-p
<350 ps <110 ps <110 ps <110 ps
yes
one Input
yes
two Inputs
p-p
DTG5078 & DTG5274 & DTG5334 Data Timing Generators Service Manual 2-3
Product Description
Mainframe and Output Module Configuration
The DTG5000 Series Data Timing Generator offers a modular card system. Six
types of the output modules can be combined in any combination. Each module can
be inserted into any slot. The functional restrictions are:
8 slots installed in the DTG5078 (A, B, C, D, E, F, G, and H)
4 slots installed in the DTG5274 and DTG5334 (A, B, C, and D)
When a DTGM10, DTGM20, or DTGM21 is installed in a DTG5274 or
DTG5334, CH3 and CH4 are unavailable. Only CH1 and CH2 can be used.
Slots E, F, G, and H are unavailable in the Pulse Generator mode.
Available data formats are different:
NRZ, RZ, R1 (Slot A, B, C, and D)
NRZ (Slot E, F, G, and H)
Due to power consumption constraints, the output modules used with the
DTG5078 are limited as follows:
Using the power consumption figures for each installed output module
[P(Mxx) in Table 2-3], the sum of all P(Mxx) values must not exceed 100.
Table 2-3: Current consumption coefficient
Module Current consumption coefficient
DTGM10 P(M10) = 9
DTGM20 P(M20) = 10
DTGM21 P(M21) = 10
DTGM30 P(M30) = 8
DTGM31 P(M31) = 33
DTGM32 P(M32) = 32
Example 1: DTGM31 1 each, DTGM30 7 each
P(M31) + P(M30) x 7 = 33 + 8 x 7 = 89 < 100; Acceptable
Example 2: DTGM32 3 each, DTGM30 5 each
P(M32) x 3 + P(M30) x 5 = 32 x 3 + 8 x 5 = 136 >100; Not Acceptable
2-4 DTG5078 & DTG5274 & DTG5334 Data Timing Generators Service Manual
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