Tektronix DTG5078, DTG5274, DTG5334 Reference manual
Technical Reference
DTG5078 & DTG5274 & DTG5334
Data Timing Generators
Performance Verification & Specifications
071-1611-02
This document applies to firmware version 2.1.1
and above.
www.tektronix.com
Copyright © Tektronix. All rights reserved. Licensed software products are owned by Tektronix or its subsidiaries or
suppliers, and are protected by national copyright laws and international treaty provisions.
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 and TEK are registered trademarks of Tektronix, Inc.
Contacting Tektronix
Tektronix, Inc.
14200 SW Karl Braun Drive
P.O. Box 500
Beaverton, OR 97077
USA
For product information, sales, service, and technical support:
In North America, call 1-800-833-9200.
Worldwide, visit www.tektronix.com to find contacts in your area.
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
General Safety Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . vii
Environmental Considerations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ix
Preface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xi
Manual Structure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xi
Related Manuals and Online Documents. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xi
Performance Verification
Conventions in this manual . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1
Self Tests . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3
Performance Tests . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-10
DTG5000 Series Test Record . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-15
Mainframe . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-29
Output Module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-80
Specifications
Product and Feature Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2
Electrical Specification-Mainframe . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-4
Output Pattern . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-20
Electrical Specification-Output Module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-32
Miscellaneous. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-45
DTG5078 & DTG5274 & DTG5334 Data Timing Generator Technical Reference i
Table of Contents
ii DTG5078 & DTG5274 & DTG5334 Data Timing Generator Technical Reference
List of Figures
List of Figures
Figure 1-1: Diagnostics dialog box . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4
Figure 1-2: Level Calibration dialog box . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-6
Figure 1-3: Skew Calibration dialog box . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-8
Figure 1-4: Skew Calibration results screen . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-9
Figure 1-5: Open Setup dialog box . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-13
Figure 1-6: Sync output tests . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-30
Figure 1-7: Internal clock frequency tests . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-32
Figure 1-8: External clock output tests . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-34
Figure 1-9: External clock input tests . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-37
Figure 1-10: 10 MHz reference input tests . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-39
Figure 1-11: 10 MHz reference output tests . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-41
Figure 1-12: Phase lock input tests . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-42
Figure 1-13: Internal trigger tests . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-44
Figure 1-14: Event input and sequence tests . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-49
Figure 1-15: Data pattern example . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-50
Figure 1-16: Jitter generation tests . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-53
Figure 1-17: Jitter generation example (all) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-54
Figure 1-18: Jitter generation example (partial) . . . . . . . . . . . . . . . . . . . . . . . . . . 1-56
Figure 1-19: DC output tests . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-57
Figure 1-20: Delay timing tests . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-59
Figure 1-21: Clock out random jitter tests . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-63
Figure 1-22: Clock out random jitter samples . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-65
Figure 1-23: Random jitter tests . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-66
Figure 1-24: Random jitter waveform samples . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-68
Figure 1-25: Total jitter waveform samples . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-71
Figure 1-26: PG Mode tests . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-73
Figure 1-27: Master–Slave operation tests . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-76
Figure 1-28: DTG5000 Configuration Utility dialog box . . . . . . . . . . . . . . . . . . . 1-77
Figure 1-29: Master-Slave operation waveform sample . . . . . . . . . . . . . . . . . . . . 1-78
Figure 1-30: Data output DC level tests . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-81
Figure 1-31: Data format tests . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-86
Figure 1-32: Pulse pattern example . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-87
Figure 1-33: RZ waveform example . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-88
Figure 1-34: R1 waveform example . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-88
Figure 1-35: Jitter control input tests . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-90
Figure 1-36: Jitter generation example (DTGM31) . . . . . . . . . . . . . . . . . . . . . . . 1-91
Figure 1-37: Jitter generation example (DTGM32 range 2 ns) . . . . . . . . . . . . . . 1-92
Figure 1-38: Jitter generation example (DTGM32 range 1 ns) . . . . . . . . . . . . . . 1-92
Figure 1-39: Inhibit input tests . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-94
Figure 2-1: DC Output channel assignment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-6
Figure 2-2: Frequency response of clock output (at 0.5 Vp-p) . . . . . . . . . . . . . . . . 2-9
Figure 2-3: Frequency response of clock output (at 1.0 Vp-p) . . . . . . . . . . . . . . . 2-10
Figure 2-4: Signal timing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-16
Figure 2-5: DTG5078 Master-Slave connection . . . . . . . . . . . . . . . . . . . . . . . . . . 2-17
Figure 2-6: DTG5274/DTG5334 Master-Slave connection . . . . . . . . . . . . . . . . . 2-18
DTG5078 & DTG5274 & DTG5334 Data Timing Generator Technical Reference iii
List of Figures
Figure 2-7: Channel addition function . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-25
Figure 2-8: The definitions of Lead/Trail Delay and Pulse Width . . . . . . . . . . . 2-26
Figure 2-9: Maximum Lead Delay . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-27
Figure 2-10: Output voltage window and clock out
(DTGM30, DTGM31, DTGM32) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-41
Figure 2-11: Equivalent circuit (DTGM10, DTGM20, DTGM21 outputs) . . . . 2-41
Figure 2-12: Equivalent circuit (DTGM30, DTGM31, DTGM32 outputs) . . . . 2-42
Figure 2-13: Input amplitude vs Jitter amplitude (DTGM31) . . . . . . . . . . . . . . . 2-42
Figure 2-14: Data rate vs Maximum jitter amplitude (DTGM31) . . . . . . . . . . . 2-43
Figure 2-15: Input frequency vs Jitter amplitude (DTGM31) . . . . . . . . . . . . . . . 2-43
Figure 2-16: Input amplitude vs Jitter amplitude (DTGM32) . . . . . . . . . . . . . . . 2-44
Figure 2-17: Input frequency vs Jitter amplitude (DTGM32) . . . . . . . . . . . . . . . 2-44
iv DTG5078 & DTG5274 & DTG5334 Data Timing Generator Technical Reference
List of Tables
List of Tables
Table 1-1: Performance test items . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-10
Table 1-2: Test equipment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-11
Table 1-3: Performance check files . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-14
Table 1-4: DTGM10 high level voltage accuracy . . . . . . . . . . . . . . . . . . . . . . . . . 1-82
Table 1-5: DTGM10 low level voltage accuracy . . . . . . . . . . . . . . . . . . . . . . . . . 1-82
Table 1-6: DTGM20 high level voltage accuracy . . . . . . . . . . . . . . . . . . . . . . . . . 1-83
Table 1-7: DTGM20 low level voltage accuracy . . . . . . . . . . . . . . . . . . . . . . . . . 1-83
Table 1-8: DTGM21 high level voltage accuracy (output impedance 50 ohm) . 1-83
Table 1-9: DTGM21 low level voltage accuracy (output impedance 50 ohm) . 1-83
Table 1-10: DTGM21 high level voltage accuracy (output impedance 23 ohm) 1-84
Table 1-11: DTGM21 low level voltage accuracy (output impedance 23 ohm) 1-84
Table 1-12: DTGM30/DTGM31/DTGM32 high level voltage accuracy . . . . . . 1-85
Table 1-13: DTGM30/DTGM31/DTGM32 low level voltage accuracy . . . . . . . 1-85
Table 2-1: DTG5000 Series Data Timing Generators (mainframe) . . . . . . . . . . . 2-2
Table 2-2: DTG5000 Series Data Timing Generators (output module) . . . . . . . . 2-3
Table 2-3: Operation mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-4
Table 2-4: Sequencer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-4
Table 2-5: Clock generator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-5
Table 2-6: Internal trigger generator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-5
Table 2-7: DC output . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-6
Table 2-8: Clock output . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-7
Table 2-9: External clock input . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-11
Table 2-10: 10 MHz reference input . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-11
Table 2-11: 10 MHz reference output . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-11
Table 2-12: Phase lock input . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-12
Table 2-13: Skew cal input . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-12
Table 2-14: Trigger input . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-13
Table 2-15: Sync output . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-14
Table 2-16: Sync clock input . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-14
Table 2-17: Sync clock output1, output 2, and output 3 . . . . . . . . . . . . . . . . . . . 2-14
Table 2-18: Sync jump input . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-15
Table 2-19: Sync jump output 1, output 2, and output 3 . . . . . . . . . . . . . . . . . . 2-15
Table 2-20: Event input . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-19
Table 2-21: CPU module and peripheral devices . . . . . . . . . . . . . . . . . . . . . . . . . 2-19
Table 2-22: Display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-20
Table 2-23: DG mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-20
Table 2-24: Clock range in NRZ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-24
Table 2-25: Clock range in RZ/R1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-25
Table 2-26: Delay offset . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-26
Table 2-27: Lead delay . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-27
Table 2-28: Trail delay . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-28
Table 2-29: Jitter amplitude . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-29
Table 2-30: PG mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-30
Table 2-31: DTGM10 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-32
Table 2-32: DTGM20 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-33
DTG5078 & DTG5274 & DTG5334 Data Timing Generator Technical Reference v
List of Tables
Table 2-33: DTGM30 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-34
Table 2-34: DTGM21 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-35
Table 2-35: DTGM31 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-37
Table 2-36: DTGM32 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-39
Table 2-37: Mechanical . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-45
Table 2-38: Installation requirement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-46
Table 2-39: Environmental . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-46
Table 2-40: Power supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-47
Table 2-41: Certifications and compliances . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-48
Table 2-42: Installation category and pollution degree . . . . . . . . . . . . . . . . . . . . 2-49
vi DTG5078 & DTG5274 & DTG5334 Data Timing Generator Technical Reference
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 Generator Technical Reference vii
General Safety Summary
Symbols and Terms
Terms in this Manual. These terms may appear in this manual:
WAR N I NG. 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:
WARNING
High Voltage
Protective Ground
(Earth) Terminal
CAUTION
Refer to Manual
Double
Insulated
viii DTG5078 & DTG5274 & DTG5334 Data Timing Generator Technical Reference
Environmental Considerations
This section provides information about the environmental impact of the product.
Product End-of-Life
Handling
Observe the following guidelines when recycling an instrument or component:
Equipment Recycling. Production of this equipment required the extraction and use
of natural resources. The equipment may contain substances that could be harmful
to the environment or human health if improperly handled at the product's end of
life. In order to avoid release of such substances into the environment and to reduce
the use of natural resources, we encourage you to recycle this product in an
appropriate system that will ensure that most of the materials are reused or recycled
appropriately.
The symbol shown to the left indicates that this product
complies with the European Union's requirements according to
Directive 2002/96/EC on waste electrical and electronic
equipment (WEEE). For information about recycling options,
check the Support/Service section of the Tektronix Web site
(www.tektronix.com).
Mercury Notification. This product uses an LCD backlight lamp that contains
mercury. Disposal may be regulated due to environmental considerations. Please
contact your local authorities or, within the United States, the Electronics
Industries Alliance (www.eiae.org) for disposal or recycling information.
Restriction of Hazardous
Substances
DTG5078 & DTG5274 & DTG5334 Data Timing Generator Te chnical Reference ix
This product has been classified as Monitoring and Control equipment, and is
outside the scope of the 2002/95/EC RoHS Directive. This product is known to
contain lead, cadmium, mercury, and hexavalent ch romium.
Environmental Considerations
x DTG5078 & DTG5274 & DTG5334 Data Timing Generator Technical Refe rence
Preface
This manual provides information necessary for users or service technicians to
verify the performance of the DTG5000 Series Data Timing Generator.
Manual Structure
The DTG5000 Series Data Timing Generator Technical Reference contains the
following sections:
The Performance Verification section contains an introduction, a list of equipment
required, and procedures that, when passed, ensure that the product meets its
specifications.
The Specifications section contains a brief product description and characteristics
tables. These tables cover the electrical, mechanical, environmental characteristics
and certification.
Related Manuals and Online Documents
This manual is part of a document set of standard accessory manuals and online
documentation; this manual mainly focuses on the performance verification and
specifications information needed to verify the product performance. See the
following list for other documents supporting the data timing generator operation
and service.
Document name Description
DTG5000 Series Online Help An online help system, integrated with the user interface application that ships with this
product. The help is preinstalled in the instrument.
DTG5000 Series User Manual 1 A quick reference to major features of the instrument and how they operate. It also provides
several tutorials to familiarize the user with basic instrument features.
DTG5000 Series User Manual 2
(a PDF file on the Document CD)
DTG5000 Series Programmer
(a PDF file on the Document CD)
DTG5000 Series Service Manual Instructions for servicing the instrument to the module level. This optional manual must be
DTG5078 & DTG5274 & DTG5334 Data Timing Generator Technical Reference xi
A comprehensive guide to instrument operation, function, and menus.
Complete information on programming commands and remote control of the instrument.
ordered separately.
Preface
xii DTG5078 & DTG5274 & DTG5334 Data Timing Generator Technical Reference
Performance Verification
Performance Verification
Two types of Performance Verification procedures can be performed on this
product: Self Tests and Performance Tests. You may not need to perform all of these
procedures, depending on what you want to accomplish.
Verify that the DTG5000 Series Data Timing Generators are operating
correctly by running the Self Tests, which begin on page 1-3.
Advantages: These procedures require minimal time to perform, and test the
internal hardware of the DTG5000 Series Data Timing Generators.
If a more extensive confirmation of performance is desired, complete the self
tests, and then do the Performance Tests beginning on page 1-10.
Advantages: These procedures add direct checking of warranted
specifications. These procedures require suitable test equipment and more time
to execute. (Refer to Required Equipment on page 1-11).
Conventions in this manual
Throughout these procedures the following conventions apply:
Each test procedure uses the following general format:
Title of Test
Equipment Required
Prerequisites
Procedure
Each procedure consists of as many steps, substeps, and subparts as required
to do the test. Steps, substeps, and subparts are sequenced as follows:
1. First Step
a. First Substep
First Subpart
Second Subpart
b. Second Substep
2. Second Step
DTG5078 & DTG5274 & DTG5334 Data Timing Generators Technical Reference 1-1
Performance Verification
Where instructed to use a control in the display or a front-panel button or knob,
the name of the control, button or knob appears in boldface type.
Menu Selections
User Manual
Install the Output Modules
Instructions for menu selection use the following format:
Menu button → Left or right Allow button (by using this button, you can move
to desired menu category) → Upper or down Allow button (by using this button,
you can move to desired menu item) → SELECT or Enter key (this completes the
selection).
You can use a mouse as a pointer, use keyboard shortcuts for quick operation, or
use front panel knob instead of sticking to above menu selection format.
The DTG5078 & DTG5274 & DTG5334 Data Timing Generators User Manual 1
is strongly recommended to familiarize the first-time user with instrument controls
and features.
Any output modules ordered are shipped separately. For complete instructions on
how to install the output modules, refer to the User Manual. (Output modules do
not ship preinstalled.)
CAUTION. Do not install or remove any output modules while the instrument is
powered on.
Always power the instrument down before attempting to remove or install any
output module.
1-2 DTG5078 & DTG5274 & DTG5334 Data Timing Generators Technical Reference
Self Tests
Performance Verification
There are two types of tests in this section that provide a quick way to confirm basic
functionality and proper adjustment:
Diagnostics
Calibration (You must perform this calibration before the performance tests.)
These procedures use internal diagnostics to verify that the instrument passes the
internal circuit tests, and calibration routines to check and adjust the instrument
internal calibration constants.
NOTE. To perform the Self Tests, at least one output module (DTGM10, DTGM20,
DTGM21, DTGM30, DTGM31, or DTGM32) must be installed in the DTG5000
series Data Timing Generator mainframes. You can select any slot when you
perform the tests even though the descriptions below are assuming the Slot A is
used.
Diagnostics
This procedure uses internal routines to verify that the instrument is operating
correctly. No test equipment or hookups are required.
The instrument automatically performs the internal diagnostics when powered on;
you can also run the internal diagnostics using the menu selections described in this
procedure. The difference between these two methods of initiating the diagnostics
is that the menu method does a more detailed memory check than the power on
method.
Do the following steps to run the internal routines that confirm basic functionality
and proper adjustment.
Equipment
required
Prerequisites
None
First, at least one output module must be installed properly in the
mainframe.
Second, power on the instrument and allow a twenty-minute warmup
before doing this procedure.
1. Set up the instrument:
Confirm that there is no output being performed by verifying that the RUN
button indicator is not on. If the indicator is on, push the RUN button to
turn it off.
DTG5078 & DTG5274 & DTG5334 Data Timing Generators Technical Reference 1-3
Performance Verification
Verify that the output module LEDs are not on. If any output module LEDs
are on, push the ALL OUTPUTS ON/OFF button to turn the LEDs off.
2. Internal diagnostics: Perform these substeps to verify internal diagnostics.
a. Display the Diagnostics dialog box:
From the application menu bar, select System, and then select
Diagnostics.... The following dialog box appears if you have changed
the settings
Select OK to display the Diagnostics dialog box. See Figure 1-1.
Figure 1-1: Diagnostics dialog box
Verify that the Loop until Fail box is not checked. If it is checked,
click the box to remove the check mark.
Select Execute All Items to start the diagnostics.
1-4 DTG5078 & DTG5274 & DTG5334 Data Timing Generators Technical Reference
Performance Verification
b. Wait: The internal diagnostics takes one to six minutes. When complete,
the resulting status appears in the diagnostics control window.
c. Verify that no failures are found and reported: All tests should pass.
Confirm that the word Pass appears in all the Status fields. If any failures
occur, record the failure information and contact your local Tektronix
service personnel for more information.
3. Select Close to exit the diagnostics.
Calibration
Two types of calibrations are provided in the DTG5000 Series Data Timing
Generator.
The Level Calibration uses internal calibration routines that check electrical
characteristics such as DC accuracy of data output, and then adjust the internal
calibration constants as necessary.
The Skew Calibration checks the delay time of data output, and then adjust the
internal calibration constants as necessary. The calibration is performed by
connecting each channel output to Skew Cal In.
NOTE. Level Calibration and Skew Calibration are not valid until the instrument
reaches a valid temperature.
Level Calibration.
Equipment
required
Prerequisites
None
Power on the instrument and allow a 20 minute warmup at an ambient
temperature between +20 °C and +30 °C before doing this procedure.
The calibration routine must be performed whenever the ambient
temperature changes by 5 °C or more.
1. Set up the instrument:
Confirm that there is no output being performed by verifying that the RUN
button indicator is not on. If the indicator is on, push the RUN button to
turn it off.
Verify that the output module LEDs are not on. If any output module LEDs
are on, push the ALL OUTPUTS ON/OFF button to turn the LEDs off.
DTG5078 & DTG5274 & DTG5334 Data Timing Generators Technical Reference 1-5
Performance Verification
2. Perform the calibration suite:
a. From the application menu bar, select System, and then select Level
Calibration.... The Level Calibration dialog box appears. See Figure 1-2.
Figure 1-2: Level Calibration dialog box
b. Select Execute.
c. All the Status fields must be Pass. If any failures occur, record the failure
information and contact your local Tektronix service personnel for more
information.
3. Select Close to exit the calibration.
1-6 DTG5078 & DTG5274 & DTG5334 Data Timing Generators Technical Reference
Skew Calibration.
Performance Verification
Equipment
required
Prerequisites
One 50 Ω SMA coaxial cable, Tektronix part number 174-1427-00
Refer to test equipment list on page 1-12.
Power on the instrument and allow a 20 minute warmup at an ambient
temperature between +20 °C and +30 °C before doing this procedure.
The calibration routine must be performed whenever the ambient
temperature changes by 5 °C or more.
1. Set up the instrument:
Confirm that there is no output being performed by verifying that the RUN
button indicator is not on. If the indicator is on, push the RUN button to
turn it off.
Verify that the output module LEDs are not on. If any output module LEDs
are on, push the ALL OUTPUTS ON/OFF button to turn the LEDs off.
2. Perform the calibration suite:
a. From the application menu bar, select System, and then select Skew
Calibration. The following dialog box appears if you have changed the
settings. Click OK.
b. The Skew Calibration dialog box appears. See Figure 1-3.
DTG5078 & DTG5274 & DTG5334 Data Timing Generators Technical Reference 1-7
Performance Verification
Figure 1-3: Skew Calibration dialog box
c. Attach an SMA coaxial cable to the SKEW CAL IN at the front panel of
the data timing generator mainframe.
d. Select Execute to display the dialog box shown below.
e. Connect the opposite end of the SMA coaxial cable to the CH1 connector
of output module and select OK to start the calibration. Wait until the
calibration completes.
f. Follow the on-screen instruction to continue the calibration:
Disconnect the cable from the channel and reconnect it to next
channel.
1-8 DTG5078 & DTG5274 & DTG5334 Data Timing Generators Technical Reference
Performance Verification
Repeat the same calibration procedure for all channels.
NOTE. When you connect the output module and Skew Cal In, use the identical
cable. If you use different cables, the calibration result may be affected.
g. When complete, the resulting status appears on the screen. See Figure 1-4.
Figure 1-4: Skew Calibration results screen
h. Verify that no failures are found and reported on the screen.
i. If any failures occur, record the failure information and contact your local
Tektronix service personnel for more information.
3. Select Close to exit the calibration.
NOTE. The calibration data in the memory may be lost if the instrument is powered
off while the calibration is executed.
DTG5078 & DTG5274 & DTG5334 Data Timing Generators Technical Reference 1-9
Performance Verification
Performance Tests
The Performance Tests include functional test items, such as the interface
functional test, in this manual.
The Functional Tests verify the functions, that is, they verify that the
DTG5000 Series Data Timing Generator features operate. They do not verify
that they operate within limits.
The Performance Tests verify that the DTG5000 Series Data Timing
Generator performs as warranted. The Performance Tests check all the
characteristics that are designated as checked in Specifications. (The
characteristics that are checked appear with a 4 in Specifications.)
Table 1-1: Performance test items
Titles Test items Reference page
DTG5000 series mainframe
Sync output Output level page 1-29
Internal clock frequency Internal clock output frequency accuracy page 1-32
External clock output External clock output amplitude, rise time/ fall time, and aberration page 1-34
External clock input External clock input function and external clock input frequency accuracy page 1-36
10 MHz reference input 10 MHz reference input function page 1-39
10 MHz reference output 10 MHz reference output frequency and output level page 1-40
Phase lock input Phase lock input function page 1-42
Internal automatic trigger Internal auto trigger function page 1-44
Trigger input Trigger input function
Event input and sequence function Event input function, jump out function for master-slave operation, and
All jitter generation Jitter profile and jitter volume page 1-53
Partial jitter generation Jitter profile and jitter volume page 1-55
DC output DC output accuracy page 1-57
Skew and delay timing Skew time between channels (after skew calibration) page 1-59
Clock out random jitter Clock out random jitter page 1-63
Random jitter Random jitter page 1-66
Total jitter Total jitter page 1-69
PG Mode Frequency, Duty, and Mode page 1-72
Master-Slave operation Master-Slave operation page 1-75
1
page 1-48
sequence operation
1-10 DTG5078 & DTG5274 & DTG5334 Data Timing Generators Technical Reference
Performance Verification
Table 1-1: Performance test items (cont.)
Titles Test items Reference page
Output module
Data output DC level Output level accuracy page 1-80
Data format NRZ, RZ, and NRI page 1-86
Jitter input Jitter control page 1-89
Inhibit input Inhibit control page 1-93
1
At least one output module, which operates correctly, must b e installed into the DTG5000 series mainframe slot
when you execute the performance tests.
Prerequisites
The tests in this section comprise an extensive, valid confirmation of performance
and functionality when the following requirements are met:
The cabinet must be installed on the instrument.
Allow 20 minutes warm up period.
You must have performed and passed the procedures under Self Tests, found
on page 1-3.
The data timing generator must have been last adjusted at an ambient
temperature between +20 °C and +30 °C, and must have been operating for a
warm-up period of at least 20 minutes.
The Performance Tests must be executed at an ambient temperature between
+10 °C and +40 °C.
Required Equipment
Table 1-2 lists the required equipment used to complete the performance tests.
Table 1-2: Test equipment
Item number and
description Minimum requirements
1. Frequency Counter 50 kHz to 5 GHz,
Accuracy:
2. Digital Multi Meter DC volts range: – 10 V to +10 V,
Accuracy:
3. Oscilloscope Bandwidth:
channel: >4, 1 MΩ and 50 Ω inputs
4. Sampling Oscilloscope Bandwidth:
Rise time:
5. Function Generator Output voltage: –5 V to +5 V,
Frequency accuracy:
<0.2 ppm
±1%
>1 GHz, Number of
>20 GHz,
<17.5 ps, 50 Ω input
<0.01%
Recommended equipment
or equivalent Purpose
Agilent 53181A op.050/010 Checks clock frequency.
Fluke 175 Measures voltage. Used in
multiple procedures.
Tektronix TDS7154 Checks output signals. Used in
multiple procedures.
Tektronix CSA8000B,
2
80E03
Tektronix AFG320 Generates external input
Checks output signals. Used in
multiple procedures.
signals. Used in multiple input
signal test procedures.
DTG5078 & DTG5274 & DTG5334 Data Timing Generators Technical Reference 1-11
Performance Verification
Table 1-2: Test equipment (cont.)
Item number and
description Minimum requirements
6. SMA Coaxial Cable
50 Ω, male to male SMA connector Tektronix part number
(3 required)
7. BNC Coaxial Cable
50 Ω, male to male BNC connector Tektronix part number
(3 required)
8. Adapter
SMA (male) to BNC (female), 50 Ω Tektronix part number
(2 required)
9. Adapter (2 required) SMA (female) to BNC (male), 50 Ω Tektronix part number
Recommended equipment
or equivalent Purpose
Signal interconnection
174-1427-00
Signal interconnection
012-0076-00
Signal interconnection
015-0554-00
Signal interconnection
015-0572-00
10. Adapter N (male) to SMA (male), 50 Ω Tektronix part number
Signal interconnection
015-0369-00
11. Adapter SMA (female) to SMA (female), 50 Ω Tektronix part number
Signal interconnection
015-1012-00
12. Lead set for DC output 16-CON twisted pair, 60 cm (24 in) Tektronix part number
Signal interconnection
012-A229-00
13. Dual-Banana Plug BNC (female) to dual banana Tektronix part number
Signal interconnection
103-0090-00
14. BNC-T Connector BNC (male) to BNC (female) to BNC
(female)
15. Feed-through
50 Ω, 0.1%, BNC Tektronix part number
Termination
16. SMA Termination 50 Ω, SMA Tektronix part number
Tektronix part number
103-0030-00
011-0129-00
Signal interconnection
Signal termination
Signal termination
015-0706-00
17. Attenuator (2 required)
18. SMB-BNC Cable SMB (female) to BNC (male) connector Tektronix part number
12 dB, SMA --- Signal attenuation
Signal interconnection
012-1459-00
19. DTG5000 series
mainframe
DTG5078 Four channel performance
tests for
DTGM10/DTGM20/DTGM21
20. DTG5000 series output
module
21. DTG5000 series output
module
DTGM20 or DTGM21 Random Jitter and Total Jitter
tests for DTG5078
DTGM30 Random Jitter and Total Jitter
tests for DTG5274 and
DTG5334
2
For best repeatability and to prolong the life of both connectors, use a torque wrench (5/16 in) and tighten the
connection to the range of 7-10 lb-in (79-112 N-cm) when yo u connect an SMA cable to a sampling mod ule. For
more information, refer to your sampling module user manual
CAUTION. Sampling modules are inherently vulnerable to static damage. Always
observe static-safe procedures and cautions as outlined in the sampling module
user manual.
1-12 DTG5078 & DTG5274 & DTG5334 Data Timing Generators Technical Reference
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