Timing TSC 5120A Bedienungsanleitung

TSC 5120A and 5115A

Phase Noise Test Set

Operations and Maintenance

Manual

For Software Revision 254

4775 Walnut Street

Suite 1B

Boulder, CO 80301 USA

www.timing.com

Phone: (303) 939-8481

5120A and 5115A Phase Noise Test Set Operations and Maintenance Manual

Timing Solutions is a trademark of the Timing Solutions Corporation.

Other product and company names may be trademarks of their respective owners.

DOC05120A Rev G

Revision History:

Revision Description Date Approved

A Initial Release 12/20/2004 GAR

B Updates for new software features. 1/13/2005 GAR

C Updates for hardware and software changes 3/25/2005 GAR

D Updates for software changes 9/26/2005 MSS

E Documents 5115A. Updates for software changes. 12/19/2005 PKS

F Software changes, noise floor specs, and DOCSIS. 01/19/2006 GAR

G Frequency counter precision and spur detection. 05/16/2006 GAR

5120A/5115A Operations and Maintenance Manual i

Contents

1: Introduction 1

1.1 Symbols. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

1.2 About This Manual . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

1.2.1 Conventions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

1.3 TSC 5120A and 5115A Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

2: Setting Up the TSC 5120A or 5115A 7

2.1 Safety Information. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

2.2 Setting Up the TSC 5120A or 5115A . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

2.2.1 Turning On the 5120A or 5115A. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

3: The Screen and Basic Concepts 11

3.1 Softkey Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

3.1.1 Navigation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

3.1.2 Manual Convention for Navigation Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

3.2 Main Screen Components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

3.2.1 Collecting State . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

3.2.2 Input Signals’ Frequency and Power . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

3.2.3 User in Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

3.2.4 User Specified Title . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

3.3 Types of Screens . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

3.3.1 Plots . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

3.3.2 Tables. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

3.3.3 Configuration Screens . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

3.4 Parameters, Input Components and Editors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

3.4.1 Numeric Parameters. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

3.4.1.1 The Number Pad Editor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

3.4.1.2 The + and - Integer Parameter Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

3.4.2 Mutually Exclusive Options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

4: Global System Settings 21

4.1 The Settings Screen. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

4.1.1 Setting Date and Time . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

4.1.2 Network Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

4.1.2.1 Static Network Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

4.1.2.2 DHCP Network Configuration. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

4.1.3 Printer Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26

4.1.3.1 Printing to a USB Printer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26

4.1.3.2 Printing to Files . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27

4.1.3.3 Configuring Network Printers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28

4.1.4 Viewing Version Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28

4.1.5 Restoring Factory Default Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28

ii Contents

5: Configuring the Data Sets 29

5.1 Configuring Phase Noise Data. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29

5.1.1 Scaling the Phase Noise Plot . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30

5.1.2 Setting Data Markers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32

5.1.3 Setting Up a Test Mask . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35

5.1.4 Display Tools . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38

5.1.5 The Spur Table . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38

5.2 Configuring the Allan Deviation Plot . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40

5.2.1 Scaling the Allan Deviation Plot . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40

5.2.2 Selecting τ0. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41

5.2.3 Viewing the Allan Deviation Table . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41

5.2.4 Setting Up Allan Deviation Test Masks. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41

5.3 Configuring the Phase Difference Plot . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42

5.3.1 Scaling the Phase Difference Plot . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42

5.3.2 Removing the Linear Trend . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43

5.3.3 Pausing or Resuming Updates . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45

5.4 Configuring the Frequency Difference Plot. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46

5.4.1 Scaling the Frequency Difference Plot. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46

5.4.2 Pausing or Resuming Updates . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46

5.5 Configuring the Frequency Counter. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47

5.5.1 Changing the Reference Frequency . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48

5.5.1.1 Automatically Setting the Reference Frequency . . . . . . . . . . . . . . . . . . . . . . . . . 48

5.5.1.2 Manually Setting the Reference Frequency . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49

6: Collecting and Viewing Data Locally 51

6.1 Starting and Stopping Data Collection. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51

6.2 Printing. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52

6.3 Taking or Yielding Local Control.. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53

7: Collecting and Viewing Data Remotely 55

7.1 Accessing the 5120A or 5115A Remotely and Exiting the Remote Session. . . . . . . . . . . . . . 56

7.2 The Network Command Port . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57

7.2.1 Taking or Yielding Remote Control. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57

7.2.2 Starting and Stopping Data Collection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57

7.2.3 Retrieving Data from Command Port. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58

7.2.4 Printing from the Command Port . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59

7.2.5 Printer Configuration from the Command Port . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60

7.2.6 Configuring Data Sets from the Command Port . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60

7.2.6.1 Pausing and Resuming Phase and Frequency Difference. . . . . . . . . . . . . . . . . . . 60

7.2.6.2 Removing the Linear Trend . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60

7.2.6.3 Setting the Allan Deviation τ0Value . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61

7.2.6.4 Setting Frequency Counter’s Reference Frequency . . . . . . . . . . . . . . . . . . . . . . . 61

7.2.7 Retrieving Status Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62

5120A/5115A Operations and Maintenance Manual iii

7.2.8 Setting the User Specified Title. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62

7.2.9 Showing the Software Version . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62

7.2.10 Viewing Help for Remote Commands . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63

7.2.11 Other Commands . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63

7.2.12 Command Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64

7.3 The Network Data Port . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66

8: Optional Functionality 67

8.1 DOCSIS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67

8.1.1 DOCSIS Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67

8.1.2 Using the DOCSIS Option Locally . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68

8.1.3 Using the DOCSIS Option Remotely . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 69

9: Maintaining the TSC 5120A or 5115A 71

9.1 Calibrating the 5120A or 5115A. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 71

9.2 Cleaning the 5120A or 5115A . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 71

10:Troubleshooting the 5120A or 5115A 73

10.1 Troubleshooting Error Messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 74

10.2 Replacing Fuses. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 76

Appendix A: Specifications 77

A.1 EC Declaration of Conformity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 77

A.2 Electrical Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 78

A.3 Environmental Specifications. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 80

A.4 Physical Specifications. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 81

Appendix B: Theory of Operation 83

B.1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 83

B.2 Theory. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 84

B.3 Measurement Methodology . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 88

Glossary 89

Index 91

iv Contents

5120A/5115A Operations and Maintenance Manual 1

1: Introduction

Note

FIRST READ THIS MANUAL THOROUGHLY!

This is especially true for the sections regarding Safety and Setup.

1.1 Symbols

These symbols appear throughout the manual and on the TSC 5120A or 5115A.

Symbol Definition

Note

This symbol means the following information is a note that gives you important

information that may affect how you use the 5120A or 5115A.

Caution, refer to manual. Read all instructions in this manual before using this

product.

Caution - Risk of Electrical shock

Fuse symbol.

LAN port, network. DO NOT CONNECT TO TELECOM CONNECTIONS

THAT CARRY HAZARDOUS VOLTAGES.

Universal Serial Bus (USB) port.

Mains power on and off. Mains power is on when the button is in the depressed

position and off when the button is in the out position.

21: Introduction

1.2 About This Manual

This manual describes how to set up, use, maintain, and troubleshoot a TSC 5120A or 5115A.

“Chapter 1, Introduction” on page 1 explains symbols that appear in the manual and on the unit as

well as documentation conventions. The chapter also briefly describes the test set.

“Chapter 2, Setting Up the TSC 5120A or 5115A” on page 7 contains important safety information

and describes how to set up the test set for the first time.

“Chapter 3, The Screen and Basic Concepts” on page 11 describes the main components of the

graphical user interface, basic concepts related to navigating the user interface, and making

settings in general.

“Chapter 4, Global System Settings” on page 21 describes individual system settings such as

system time, network configuration and printer settings in detail.

“Chapter 5, Configuring the Data Sets” on page 29 describes the various data sets the 5120A and

5115A provide and how to manipulate and configure each data set.

“Chapter 6, Collecting and Viewing Data Locally” on page 51 describes how to start and stop data

collection and how to print using the front panel.

“Chapter 7, Collecting and Viewing Data Remotely” on page 55 describes how to view, print and

configure data sets using the Ethernet command port.

“Chapter 8, Optional Functionality” on page 67 describes optional functionality.

“Chapter 9, Maintaining the TSC 5120A or 5115A” on page 71 describes how to maintain the test

set.

“Chapter 10, Troubleshooting the 5120A or 5115A” on page 73 describes how to troubleshoot

error messages.

“Appendix A, Specifications” on page 77 contains the detailed specifications for the test set.

“Appendix B, Theory of Operation” on page 83 contains the detailed information about the

algorithms and underlying theories for the test set.

1.2.1 Conventions

This manual uses several typographical conventions to help explain how to use the TSC 5120A or

5115A.

5120A/5115A Operations and Maintenance Manual 3

Convention Definition

Bold Words in bold show:

Buttons and icons to click

Menu options to select

Commands to type

Non-variable information displayed in response to commands

Italics Words in italics show:

Names of windows and dialog boxes

Variable information displayed in response to commands

State information, label and button captions

41: Introduction

1.3 TSC 5120A and 5115A Overview

The TSC 5120A and 5115A are instruments that combine sophisticated timing technologies into a

single advanced test set for the measurement of (f) phase noise. The low-noise, bench-top

instrument combines the latest digital synthesizer, active mixer, and dual conversion techniques to

capture precise, accurate (f) phase noise measurements. The TSC 5120A also performs cross-

correlation of the digitized signal from both input paths to provide the lowest possible noise floor

measurement.

The 5120A and 5115A are designed for ease of use. Little configuration is required. Just connect

two signal sources to the BNC (using supplied adapters) inputs and press Start.

The input impedance is 50 Ω, and the nominal input level ideally should be near 1 VRMS. The unit

initializes itself, measures the frequencies of the input signals, configures the signal paths, and

collects data.

You have a choice of five primary plot displays: phase noise, Allan deviation, frequency counter,

frequency difference, and phase difference.

An Ethernet port on the rear panel provides the capability to remotely control the instrument. Two

USB ports on the rear panel provide connections for a printer, mouse and keyboard.

Figure 1 shows the test set’s front panel, and Figure 2 shows the test set’s rear panel.

Figure 1: Front panel

Softkeys; press the

corresponding button to

access functions.

Test signal ports.Softkey labels; labels change

based on the current function.

Power.

Stop; use to stop

collecting data.

Print; use to print the

current screen to the

connected printer.

Start; use to start

collecting data.

Screen; automatically turns

off after one hour if no keys

are pressed. Press any

softkey to view the last

screen displayed.

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