DLS 50 Manuel utilisateur

Operating Manual

DLS 50

ISDN Wireline Simulator

Revision 5

January 1, 2000

TestW rks

Page i

TABLE OF CONTENTS

1. INTRODUCTION................................................................1

1.1 About this Manual................................................................. 1

1.2 Receiving and Unpacking the Unit ........................................ 1

1.3 DLS 50 Overview.................................................................. 2

2. ISDN BACKGROUND........................................................5

2.1 The ISDN U-Interface ........................................................... 5

2.2 ANSI Specifications............................................................... 6

3. OPERATION .......................................................................7

3.1 Powering On the DLS 50....................................................... 7

3.2 Connecting the DLS 50.......................................................... 9

3.3 Changing the Cable Length................................................... 9

3.4 Configuring the DLS 50........................................................10

4. REMOTE CONTROL.......................................................13

4.1 IEEE 488 Interface...............................................................14

4.1.1 IEEE 488.1 Interface functions supported...............................14

4.1.2 IEEE 488 Address ..................................................................14

4.1.3 The SRQ Line......................................................................... 14

4.1.4 Resetting the DLS 50..............................................................16

4.1.5 Message Terminators.............................................................. 16

4.2 RS-232 Serial Interface ........................................................16

4.2.1 Baud Rate...............................................................................17

4.2.2 Data Format............................................................................17

4.2.3 Flow Control...........................................................................17

4.2.4 Message Terminators.............................................................. 19

4.3 Data formats.........................................................................19

4.4 Command Syntax..................................................................20

Page ii

4.5 Status Reporting...................................................................21

4.5.1 Status Byte Register (STB)......................................................22

4.5.2 Event Status Register (ESR)....................................................23

4.6 Common Command Set........................................................24

4.7 Device Dependent Command Set..........................................30

4.7.1 :SETting:CHANnel:LENgth <NRf> .......................................30

4.7.2 :SYStem:COMMunicate:GPIB:ADDRess <NRf> ...................31

4.7.3 :SYStem:COMMunicate:SERial:BAUD <NRf>......................31

4.7.4 :SYStem:COMMunicate:SERial:FORMat <format>...............32

4.7.5 :SYStem:COMMunicate:SERial:PACE <pace>......................33

4.8 DLS 50 Synchronization.......................................................34

4.9 References.............................................................................35

5. WARRANTY......................................................................36

6. SHIPPING THE DLS 50....................................................38

7. SPECIFICATIONS............................................................39

7.1 ELECTRICAL.....................................................................41

7.1.1 AC Power............................................................................... 41

7.2 ENVIRONMENTAL...........................................................41

7.3 MECHANICAL...................................................................41

7.4 OPERATING CONDITIONS.............................................41

8. SAFETY .............................................................................43

8.1 INFORMATION..................................................................43

8.1.1 Protective Grounding (Earthing)............................................. 43

8.1.2 Before Operating the Unit....................................................... 43

8.1.3 Supply Power Requirements....................................................43

8.1.4 Mains Fuse Type.....................................................................44

8.1.5 Connections to a Power Supply...............................................44

8.1.6 Operating Environment ..........................................................44

8.1.7 Class of Equipment.................................................................44

8.2 INSTRUCTIONS.................................................................44

Page iii

8.2.1 Before Operating the Unit....................................................... 45

8.2.2 Operating the Unit..................................................................45

8.3 SYMBOLS ...........................................................................46

INDEX.......................................................................................47

Introduction

Page 1

1. INTRODUCTION

1.1 About this Manual

The DLS 50 Operating Manual can be used to learn about the unit for the first time, or

can be used as a look up reference book. We suggest that you carefully read the

introduction sections of this manual before powering on your unit. Failure to do so

could damage your DLS 50.

If you still have questions after reading this manual, please contact your DLS TestWorks

sales representative or our customer service department at the location shown in section

5, "Warranty" of this manual. If you have any suggestions as to how this manual could

be improved, please write to us at the same address.

Thank you for your business and for choosing DLS TestWorks.

1.2 Receiving and Unpacking the Unit

The DLS 50 has been shipped to you in a reinforced cardboard shipping container. We

recommend that you retain this carton for any future shipments.

Please check that you have received all the items as per the packing list and report any

discrepancies as soon as possible. Please also note that some options are installed within

the chassis of the main unit and can only be checked by powering on the unit.

The DLS 50 supports many AC voltages found in various parts of the world. We have

already selected the voltage appropriate to your country according to the information we

had. But errors do occur... so read section 3.1 "Powering on the DLS 50" before

switching on the DLS 50.

Introduction

Page 2

1.3 DLS 50 Overview

The DLS 50 simulates a 2 wire length of cable using standard DLS TestWorks ISDN

bandwidth ladders. The user can easily change the length of the simulated cable by

using the front panel of the DLS 50 or by using a computer. It is meant to be used in

laboratories, production lines etc. to simulate "real life" wireline situations on bench top.

The DLS 50 can be ordered in various gauges and in 2 lengths, standard and extended .

The user can purchase the standard unit, and then later decide to upgrade to the

extended version.

The devices under test are connected to the DLS 50 using either the RJ-45 connectors or

the terminal block, located at the front or at the back. All the connectors on each side

are connected in parallel.

The unit can be controlled via the IEEE 488 and the RS-232 serial interfaces. One

simple command is all that is needed to set the channel length, but other IEEE 488.2

and SCPI commands are also supported.

The main component of the DLS 50 is the mother board, which holds

•The simulation circuitry

•The microprocessor and all the control logic

•The power supply

•Analog connectors (RJ-45 and terminal block)

•Digital Interfaces (RS-232 and IEEE 488)

The mother board has a front panel board attached which holds the display and the keys.

The components are mounted on a frame which slides into a housing. The dimensions of

the assembled unit are approximately 2.5H x 17.0W x 15.0D (6 cm H x 43 cm W x 38

cm D), and weight about 10 lbs (4.5 kg).

Introduction

Page 3

The standard DLS 50 simulates 12 kft or 3.6 km of wireline. The extended version

provides an additional 8 kft or 2.4 km of wireline. The various types of DLS 50 that are

presently available are:

Standard DLS 50 Extended DLS 50

22 AWG, 12 kft 22 AWG, 20 kft

24 AWG, 12 kft 24 AWG, 20 kft

26 AWG, 12 kft 26 AWG, 20 kft

0.4 mm PE, 3.6 km 0.4 mm PE, 6.0 km

0.6 mm German, 3.6 km 0.6 mm German, 6.0 km

Fig. 1.1 The DLS 50's Front Panel

1. Liquid crystal display (LCD).

2. Menu control / setup keys.

3. RJ-45 modular connector for device under test, one on each end of the

wireline (internally connected to items 9, 10 and 11).

4. Power switch

Introduction

Page 4

Fig. 1.2 The DLS 50's Back Panel

5. AC power input plug

6. Power voltage selector and fuse case

7. IEEE 488 interface connector for remote control.

8. RS-232 serial interface connector for remote control.

9. Modular connector for device under test (internally connected to items 3,

10 and 11).

10. Modular connector for injection of impairments (internally connected to

items 3, 9 and 11).

11. Terminal strip for connection to device under test (internally connected to

items 3, 9 and 10).

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