Tektronix DTG5078, DTG5274 Reference manual

Technical Reference

DTG5078 & DTG5274 Data Timing Generators Performance Verification & Specifications

071-1280-02

This document supports firmware version 1.0.14 and above.

www.tektronix.com

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 Japan, Ltd. 5--9--31 Kitashinagawa, Shinagawa--ku, Tokyo 141 --0001 Japan

Tektronix, Inc., P.O. Box 500, Beaverton, OR 97077--0001

TEKTRONIX and TEK are registered trademarks of Tektronix, Inc.

WARRANTY

Tektronix warrants that the products that it manufactures and sells will be free from defects in materials and workmanship for a period of one (1) year from the date of shipment. If a product proves defective during this warranty period, Tektronix, at its option, either will repair the defective product without charge for parts and labor, or will provide a replacement in exchange for the defective product.

In order to obtain service under this warranty, Customer must notify Tektronix of the defect before the expiration of the warranty period and make suitable arrangements for the performance of service. Customer shall be responsible for packaging and shipping the defective product to the service center designated by Tektronix, with shipping charges prepaid. Tektronix shall pay for the return of the product to Customer if the shipment is to a location within the country in which the Tektronix service center is located. Customer shall be responsible for paying all shipping charges, duties, taxes, and any other charges for products returned to any other locations.

This warranty shall not apply to any defect, failure or damage caused by improper use or improper or inadequate maintenance and care. Tektronix shall not be obligated to furnish service under this warranty a) to repair damage resulting from attempts by personnel other than Tektronix representatives to install, repair or service the product; b) to repair damage resulting from improper use or connection to incompatible equipment; 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 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 O F 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 NO TICE OF THE POSSIBILITY OF SUCH DAMAGES.

List of Figures ii............................................

List of Tables iii.............................................

General Safety Summary v...................................

Preface vii...................................................

Manual Structure vii................................................

Related Manuals and Online Documents vii..............................

Contacting Tektronix viii.............................................

Performance Verification

Conventions in this manual 1--1........................................

Self Tests 1--3.......................................................

Performance Tests 1--10................................................

Mainframe 1--15.....................................................

Output Module 1--62..................................................

Specifications

Product and Feature Description 2--1....................................

Electrical Specification 2--3...........................................

Miscellaneous 2--32...................................................

DTG5078 & DTG5274 Data Timing Generator Technical Reference

Table of Contents

List of Figures

Figure 1--1: Diagnostics dialog 1--4...............................

Figure 1--2: Level Calibration dialog 1--6..........................

Figure 1--3: Skew Calibration dialog 1--8..........................

Figure 1--4: Skew Calibration results screen 1--9....................

Figure 1--5: Open Setup dialog 1--13...............................

Figure 1--6: Sync output tests 1--16................................

Figure 1--7: Internal Clock Frequency t ests 1--18....................

Figure 1--8: External Clock Output tests 1--20.......................

Figure 1--9: External Clock Input tests 1--23........................

Figure 1--10: 10 MHz Reference Input tests 1--25....................

Figure 1--11: 10 MHz Reference Output tests 1--27...................

Figure 1--12: Phase Lock Input tests 1--28..........................

Figure 1--13: Internal Trigger tests 1--30...........................

Figure 1--14: Event I nput and Sequence tests 1--34...................

Figure 1--15: Data pattern example 1--36...........................

Figure 1--16: Jitter Generation tests 1-- 38...........................

Figure 1--17: Jitter Generation example (all) 1--39...................

Figure 1--18: Jitter Generation example (partial) 1--41................

Figure 1--19: DC Output tests 1--42................................

Figure 1--20: Delay timing tests 1--44..............................

Figure 1--21: Clock out random jitter tests 1--48.....................

Figure 1--22: Clock out random jitter sample 1--49...................

Figure 1--23: Random jitter tests 1--50.............................

Figure 1--24: Random jitter waveform sample 1--52..................

Figure 1--25: Total jitter waveform sample 1--54.....................

Figure 1--26: PG Mode tests 1--55.................................

Figure 1--27: Master-Slave operation tests 1--58.....................

Figure 1--28: DTG5000 Configuration Utility dialog 1--59.............

Figure 1--29: Master-Slave operation waveform sample 1--60..........

Figure 1--30: Data output DC level tests 1--63.......................

Figure 1--31: Data format tests 1--67...............................

Figure 1--32: Pulse pattern example 1--68...........................

Figure 1--33: RZ waveform example 1--69..........................

Figure 1--34: R1 waveform example 1--69...........................

DTG5078 & DTG5274 Data Timing Generator Technical Reference

List of Tables

Table of Contents

Figure 2--1: DC Output channel assignm ent 2--5....................

Figure 2--2: Frequency response of clock output 2--7................

Figure 2--3: Signal timing 2--12...................................

Figure 2--4: DTG5078 Master-Slave connection 2--13.................

Figure 2--5: DTG5274 Master-Slave connection 2--14.................

Figure 2--6: Channel addition function 2--21........................

Figure 2--7: The definitions of Lead/Trail Delay and Pulse Width 2--22..

Figure 2--8: Maximum Lead Delay 2--22...........................

Figure 2--9: Output voltage window and clock out (DTGM30) 2--30....

Figure 2--10: Equivalent circuit of DTGM10 and DTGM20 outputs 2--31

Figure 2--11: Equivalent circuit of DTGM30 output 2--31.............

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--64.............

Table 1--5: DTGM10 Low Level Voltage Accuracy 1--64..............

Table 1--6: DTGM20 High Level Voltage Accuracy 1--64.............

Table 1--7: DTGM20 Low Level Voltage Accuracy 1--65..............

Table 1--8: DTGM30 High Level Voltage Accuracy 1--66.............

Table 1--9: DTGM30 Low Level Voltage Accuracy 1--66..............

Table 2--1: DTG5000 Series Data Timing Generators 2--1...........

Table 2--2: Operation mode 2--3................................

Table 2--3: Sequencer 2--3......................................

Table 2--4: Clock Generator 2--4................................

Table 2--5: Internal Trigger G enerator 2--4.......................

Table 2--6: DC Output 2--4.....................................

Table 2--7: Clock Out 2--5......................................

Table 2--8: External Clock In 2--7...............................

Table 2--9: 10 MHz Reference In 2--8............................

Table 2--10: 10 MHz Reference Out 2--8..........................

Table 2--11: Phase Lock In 2--8.................................

DTG5078 & DTG5274 Data Timing Generator Technical Reference

iii

Table of Contents

Table 2--12: Skew Cal In 2--9...................................

Table 2--13: Trigger In 2--9.....................................

Table 2--14: Sync Out 2--10.....................................

Table 2--15: Sync Clock In 2--10.................................

Table 2--16: Sync Clock Out 1, Out 2 and Out 3 2--10...............

Table 2--17: Sync Jump In 2--11.................................

Table 2--18: Sync Jump Out 1, Out 2 and Out 3 2--11...............

Table 2--19: Event In 2--14......................................

Table 2--20: CPU module and peripheral devices 2--15...............

Table 2--21: Display 2--16.......................................

Table 2--22: DG Mode 2--16.....................................

Table 2--23: Clock Range in NRZ 2--20............................

Table 2--24: Clock Range in RZ/R1 2--21..........................

Table 2--25: Delay Offset 2--21...................................

Table 2--26: Lead Delay 2--23....................................

Table 2--27: Trail Delay 2--23....................................

Table 2--28: Jitter Amplitude 2--24...............................

Table 2--29: PG Mode 2--25.....................................

Table 2--30: DTGM10 2--27.....................................

Table 2--31: DTGM20 2--28.....................................

Table 2--32: DTGM30 2--29.....................................

Table 2--33: Mechanical 2--32....................................

Table 2--34: Installation requir em ent 2--33.........................

Table 2--35: Environmental 2--33.................................

Table 2--36: Power Supply 2--34.................................

Table 2--37: Certifications and compliances 2--35...................

Table 2--38: Installation category and Pollution degree 2--36..........

DTG5078 & DTG5274 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 Data Timing Generator Technical Reference

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:

WARNING

High Voltage

Protective Ground

(Earth) Terminal

CAUTION

Refer to Manual

Double

Insulated

DTG5078 & DTG5274 Data Timing Generator Technical Reference

Preface

This manual provi des 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 Verifications 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.

Contacting Tektronix

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.

viii

DTG5078 & DTG5274 Data Timing Generator Technical Reference

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.

H Verify that the DTG5000 Series Data Timing Generator is 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 Generator.

H If a more extensive confirmation of performance is desired, complete the self

tests, and t hen 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 Equipment Required on page 1--11).

Conventions in this manual

Throughout these procedures the following conventions apply:

H Each test procedure uses the following general format:

Title of Test

Equipment Required

Prerequisites

Procedure

H 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

H First Subpart

H Second Subpart

b. Second Substep

2. Second Step

DTG5078 & DTG5274 Data Timing Generator Technical Reference

1--1

Performance Verification

H 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 Data Timing Generators User Manual 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 Data Timing Generator 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:

H Diagnostics

H 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 r outines to check and adjust the instrument internal calibration constants.

NOTE. To perform the Self Tests, at least one output module (DTGM10, DTGM20, or DTGM30) must be installed in the DTG5000 series Data Timing Generator mainframe. 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:

H 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 buttontoturnitoff.

DTG5078 & DTG5274 Data Timing Generator Technical Reference

1--3

Performance Verification

H Verify that the output module LEDs are not on. If any output module

LEDs are on, push the ALL OUTPUTS ON/OFF buttontoturnthe LEDs off.

2. Internal diagnostics: Perform these substeps to verify internal diagnostics.

a. Display the Diagnostics dialog:

H From the application menu bar, select System , and then select

Diagnostics.... The following dialog appears if you have changed

the settings.

H Select OK to display the Diagnostics dialog. See Figure 1--1.

Figure 1--1: Diagnostics dialog

1--4

H Verify that the Loop until Fail box is not checked. If it is checked,

click the box to remove the check mark.

H Select Execute All Items to start the diagnostics.

DTG5078 & DTG5274 Data Timing Generator 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 diagnost ics.

Calibration

Two types of calibrations are provided in the DTG5000 Series Data Timing Generator.

H The Level Calibration uses internal calibration routines that check electrical

characteristics s uch as DC accuracy of data output, and then adjust the internal calibration constants as necessary.

H The Skew Calibration checks the delay time of data output, and then adjust

the i nternal 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:

H 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 buttontoturnitoff.

H 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 Data Timing Generator 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 appears. See Figure 1--2.

Figure 1--2: Level Calibration dialog

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 Data Timing Generator 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:

H 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 buttontoturnitoff.

H 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 appears if you have changed the settings. Click OK.

b. The Skew Calibration dialog appears. See Figure 1--3.

DTG5078 & DTG5274 Data Timing Generator Technical Reference

1--7

Performance Verification

Figure 1--3: Skew Calibration dialog

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 t he calibration. Wait until the calibration completes.

f. Follow the on-screen instruction to continue the calibration:

H Disconnect the cable from the channel and reconnect it to next

channel.

1--8

DTG5078 & DTG5274 Data Timing Generator Technical Reference

Performance Verification

H 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 f ailures 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 Data Timing Generator Technical Reference

1--9

Performance Verification

Performance Tests

The Performance Tests include functional test items, such as the interface functional test, in this manual.

H 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.

H 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 n in Specifications.)

Table 1--1: Performance test items

Titles Test items Reference page

DTG5000 series mainframe

Sync output Output level Page 1--15

Internal clock frequency Internal clock output frequency accuracy Page 1--18

External clock output External clock output amplitude, rise time/ fall time, and aberration Page 1 --20

External clock input External clock input function and external clock input frequency accuracy Page 1--22

10 MHz reference input 10 MHz reference input function Page 1--25

10 MHz reference output 10 MHz reference output frequency and output level Page 1--26

Phase lock input Phase lock input function Page 1--28

Internal automatic trigger Internal auto trigger function Page 1--30

Trigger input Trigger input function

Event input and sequence function Event input function, jump out function for master-slave operation, and

sequence operation

All jitter generation Jitter profile and jitter volume Page 1-- 38

Partial jitter generation Jitter profile and jitter volume Page 1--40

DC output DC output accuracy Page 1--42

Skew and delay timing Skew time between channels (after skew calibration) Page 1--44

Clock out random jitter Clock out random jitter Page 1--47

Random jitter Random jitter Page 1--50

Total jitter Total jitter Page 1-- 53

Page 1--33

PG Mode Frequency, Duty, and Mode Page 1--54

Master-Slave operation Master-Slave operation Page 1--57

1--10

DTG5078 & DTG5274 Data Timing Generator Technical Reference

Performance Verification

Table 1--1: Performance test items (cont.)

Titles Reference pageTest items

Output module

Data output DC level Output level accuracy Page 1--62

Data format NRZ, RZ, and NRI Page 1--67

At least one output module, which operates correctly, must be installed into the DTG5000 series mainframe slot when you execute the performance tests.

Prerequisites

Equipment Required

Table 1--2: Test equipment

Item number and description

The tests in this section comprise an extensive, valid confirmation of performance and functionality when the following requirements are met:

H The cabinet must be installed on the instrument.

H Allow 20 minutes warm up period.

H You must have performed and passed the procedures under Self Tests, found

on page 1--3.

H The data timing generator must have been last adjusted at an ambient

temperature between +20_ Cand+30_ C, and must have been operating for a warm-up period of at least 20 minutes.

H The Performance Tests must be executed at an ambient temperature between

+10_ Cand+40_ C.

Table 1--2 lis ts the required equipment used to complete the performance tests.

Recommended equipment

Minimum requirements

or equivalent

Purpose

1. Frequency Counter 50 kHz to 5 GHz, Accuracy: <0.2 ppm

2. Digital Multi Meter DC volts range: -- 10 V to + 10 V, Accuracy: 1%

3. Oscilloscope Bandwidth: >1 GHz, Number of channel: >4, 1 MΩ and 50 Ω inputs

4. Sampling Oscilloscope Bandwidth: >20 GHz, Rise time: <17.5 ps, 50 Ω input

5. Function Generator Output voltage: --5 V to +5 V, Frequency accuracy: <0.01%

Agilent 53181A op.050/010 Checks clock frequency.

Fluke 8842A Measures voltage. Used in

Tektronix TDS7104 Checks output signals. Used

Tektronix CSA8000B, 80E03

Tektronix AFG320 Generates external input

DTG5078 & DTG5274 Data Timing Generator Technical Reference

multiple procedures.

in multiple procedures.

Checks output signals. Used in multiple procedures.

signals. Used in multiple input signal test procedures.

1--11

Performance Verification

Table 1--2: Test equipment (cont.)

Item number and description

6. SMA Coaxial Cable (3 required)

7. BNC Coaxial Cable (3 required)

8. Adapter (2 required)

9. Adapter (2 required)

10. Adapter N (male) to SMA (male), 50 Ω Tektronix part number

11. Adapter SMA (female) to SMA (female), 50 Ω Tektronix part number

12. Lead set for DC output 16-CON twisted pair, 60 cm (24in) Tektronix part number

13. Dual-Banana Plug BNC (female) to dual banana Tektronix part number

14. BNC-T Connector BNC (male) to BNC (female) to BNC

15. Feed-through Termination

16. SMA Termination 50 Ω,SMA Tektronix part number

17. Attenuator (2 required)

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 you connect an SMA cable to a sampling module. For more information, refer to your sampling module user manual.

Minimum requirements

50 Ω, male to male SMA connector Tektronix part number

50 Ω, male to male BNC connector Tektronix part number

SMA (male) to BNC (female), 50 Ω Tektronix part number

SMA (female) to BNC (male), 50 Ω Tektronix part number

(female)

50 Ω,0.1%,BNC Tektronix part number

12 dB, SMA -- -- -- Signal attenuation

Recommended equipment or equivalent

174-1427-00

012-0076-00

015-0554-00

015-0572-00

015-0369-00

015-1012-00

012-A229-00

103-0090-00

Tektronix part number 103-0030-00

011-0129-00

015-0706-00

Purpose

Signal interconnection

Signal termination

1--12

CAUTION. Sampling modules are inherently vulnerable to static damage. Always observe static-safe procedures and cautions as outlined in the sampling module user manual.

DTG5078 & DTG5274 Data Timing Generator Technical Reference

Performance Verification

Loading Files

The following steps explain how to load files from the DTG5000 Series Data Timing Generator.

1. From the application menu bar, select File, and then select Open Setup.The Open Setup dialog appears. See Figure 1--5.

2. Specify C:\Program Files\Tektronix\DTG5000\PV\DTG5078 (or C:\Program Files\Tektronix\DTG5000\PV\DTG5274)toLook in field.

Figure 1--5: Open Setup dialog

3. Select the necessary file in the File name:, and then click Open.

4. The Open Setup Dialog automatically disappears, and then the selected

waveform and sequence file are loaded.

If your data timing generator mainframe is not equipped with maximum output module configuration, the following dialog box appears.

5. Click OK to complete the i nstrument setup.

DTG5078 & DTG5274 Data Timing Generator Technical Reference

1--13

Performance Verification

Performance Check Files

Table 1--3 lists the setup files on the internal hard disk drive that are used in these performance tests. A specified file must be loaded each time you execute Performance Test procedure. Test pattern data and setup information are included in the file.

Table 1--3: Performance check files

No. File name Clock frequency Test item

1 SYNCOUT.dtg Internal: 10 MHz Sync output

2 INTCLK.dtg Internal: 100 MHz Internal clock frequency

3 CLKOUT.dtg Internal: 10 MHz External clock output

4 CLKIN.dtg External clock: 10 MHz External clock input

5 REFIN.dtg External reference: 100 MHz 10 MHz reference

6 PLL.dtg External PLL: 10 MHz Phase lock input

7 TRIG.dtg Internal: 2.7 GHz (DTG5274)

Internal: 750 MHz (DTG5078)

8 EVENT.dtg Internal: 2.7 GHz (DTG5274)

Internal: 750 MHz (DTG5078)

9 JITGEN_INTER.dtg Internal: 100 MHz Total jitter

10 JITGEN_PARA.dtg Internal: 100 MHz Partial jitter

11 DCOUT.dtg

12 REFOUT.dtg Internal: 100 MHz 10 MHz reference output

13 DELAY.dtg

14 PGMODE.dtg Internal: 100 MHz PG mode

15 OM_H.dtg

16 OM_L.dtg

17 FORMAT.dtg Internal: 10 MHz Data format

18 MASTER.dtg Internal: 20 MHz Master-Slave operation

19 RNDJIT.dtg Random jitter

20 TOTJIT.dtg Total jitter

Trigger input

Event input and sequential function

1--14

DTG5078 & DTG5274 Data Timing Generator Technical Reference

Mainframe

Performance Verification

The following procedures check those characteristics that relate to the mainframe that are checked under Mainframe in Specifications. Refer to page 2--3.

NOTE. To perform the Performance Tests, at least one output module must be installed in the DTG5000 Series Data Timing Generator mainframe. You can select any slot when you perform the tests even though the descriptions below are assuming the Slot A is used.

Sync Output

This test verifies that the DTG5000 series mainframe sync output is functional.

Equipment required

Prerequisites

One oscilloscope (TDS7104) (item 3)

Two 50 Ω SMA coaxial cables (item 6)

Two SMA (female)-BNC (male) adapters (item 9)

DTG5000 Series Data Timing Generator

The prerequisites listed on page 1 --11.

must meet the

1. Install the test hookup and preset the instrument controls:

a. Hook up the oscilloscope:

H Attach SMA (female)-BNC (male) adapters to the oscilloscope CH1

input and CH2 input connectors.

H Connect an SMA coaxial cable from t he CH2 connector of output

module, which is inserted in the slot A of DTG5000 series mainframe, to the SMA-BNC adapter (CH2 input of oscilloscope).

H Connect an SMA coaxial cable from t he SYNC OUT at the front

panel of the DTG5000 series mainframe to the SMA-BNC adapter (CH1 input of the oscilloscope). See Figure 1--6.

DTG5078 & DTG5274 Data Timing Generator Technical Reference

1--15

Performance Verification

DTG5000 series

CH2 OUTPUT

SYNC OUT

50 Ω SMA coaxial cables

Figure 1--6: Sync output tests

b. Set the oscilloscope controls as follows:

Vertical .

CH1andCH2coupling ......... DC

CH1scale .................. 100mV/div

CH2scale .................. 200mV/div

CH1 and CH2 input impedance . . . 50 Ω

CH1offset .................. --200mV

Horizontal

Scale ...................... 100ns/div

Acquisition

Mode ...................... Average

Number of running averages ..... 32

Trigger

Source ..................... CH2

Coupling.................... DC

Slope ...................... Positive

Level ...................... 500mV

Mode ...................... Auto

Measurement .................... CH1High

Oscilloscope (TDS7104)

CH1 and CH2 Inputs + SMA (female)-BNC (male) adapter

CH1 Low

1--16

2. Set the data timing generator controls and load the setup file:

a. Load the setup file (SYNCOUT.dtg). Refer to Loading Files on page

1--13.

b. After the file is loaded, the Frequency of data timing generator is set to

10MHz.

DTG5078 & DTG5274 Data Timing Generator Technical Reference

Performance Verification

3. Push the RUN button of the data timing generator to light the RUN LED, and then push the ALL OUTPUTS ON/OFF button to activate the output.

4. Confirm the oscilloscope screen: Verify that the 400 ns width square waveform appears in the CH1 display.

5. Using the oscilloscope Measurement functions, verify that the High Level and Low Level values of Sync Out are within the following range.

H High Level: 0 V ¦ 50 mV

H Low Level: -- 0.4 V ¦ 50 mV

DTG5078 & DTG5274 Data Timing Generator Technical Reference

1--17

Performance Verification

Internal Clock Frequency

This test verifies the frequency accuracy of internal clock.

Equipment required

Prerequisites

One frequency counter (item 1)

One 50 Ω SMA coaxial cable (item 6)

One SMA (female) - BNC (male) adapter (item 9)

One N (male) - SMA (male) adapter (item 10)

One SMA (female) - SMA (female) adapter (item 11)

DTG5000 Series Data Timing Generator

The prerequisites listed on page 1 --11.

1. Install the test hookup and preset the instrument controls:

a. Hook up the frequency counter:

H Attach an SMA (female)-BNC (male) adapter to the CHANNEL 1

input of frequency counter.

H Attach a N (male)-SMA (male) adapter to the CHANNEL 2 input of

frequency counter, and then attach an SMA (female)-SMA (female) adapter to the N-SMA adapter.

must meet the

H Connect an SMA coaxial cable from the CLOCK OUT at the rear

panel of DTG5000 series mainframe through the SMA-SMA and N-SMA adapters to the frequency counter CHANNEL 2 input. See Figure 1--7.

CHANNEL 2 + N (male)-SMA (male) adapter + SMA (female)-SMA (female) adapter

Frequency Counter

CHANNEL 1 + SMA (female)-BNC (male) adapter

CLOCK OUT

DTG5000 series rear

50 Ω SMA coaxial cable

Figure 1--7: Internal Clock Frequency tests

b. Power on the frequency counter, and verify that the frequency counter is

set to frequency measurement mode (default setting).

1--18

DTG5078 & DTG5274 Data Timing Generator Technical Reference

+ 88 hidden pages

Tektronix DTG5078, DTG5274 Reference manual

Specifications and Main Features

Frequently Asked Questions

User Manual

WARRANTY

Table of Contents

List of Figures

List of Tables

General Safety Summary

Preface

Manual Structure

Related Manuals and Online Documents

Contacting Tektronix

Performance Verification

Conventions in this manual

Self Tests

Performance Tests

Mainframe