DLS 50 Bedienungsanleitung
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
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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
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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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