Rohde&Schwarz ABFS Operating Manual

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Test and Measurement Division

Operating Manual

Baseband Fading Simulator

ABFS

1114.8506.02

Printed in the Federal Republic of Germany

1114.8564.12-021

Supplement to

Operating Manual

Baseband Fading Simulator ABFS

Dear Customer,

Your Baseband Fading Simulator is equipped with a new firmware version. The new firmware offers the following extensions and improvements:

FSIM - FINE DELAY menu:

RF FREQUENCY CH1

RF FREQUENCY CH2

FSIM - MOVING DELAY menu:

RF FREQUENCY

FSIM - BIRTH-DEATH menu:

RF FREQUENCY

IEC/IEEE-bus commands:

Input value of RF frequency of channel 1.

IEC/IEEE-bus command :SOUR:FSIM:FDEL:CHAN1:RF 100MHz

Input value of RF frequency of channel 2.

IEC/IEEE-bus command :SOUR:FSIM:FDEL:CHAN2:RF 100MHz

Input value of RF frequency. IEC/IEEE-bus command :SOUR:FSIM:MDEL:CHAN:RF 100MHz

Input value of RF frequency. IEC/IEEE-bus command :SOUR:FSIM:BIRT:CHAN:RF 100MHz

[:SOURce]:FSIMulator:FDELay:CHANnel<1|2>:RF 5.0 MHz ... 8.5 GHz

This command sets the RF frequency of the selected channel in Fine Delay mode. The channel is selected via the numeric suffix in CHANnel.

Example: :SOUR:FSIM:FDEL:CHAN1:RF 600 MHz *RST value is 100 MHz

[:SOURce]:FSIMulator:MDELay:CHANnel:RF 5.0 MHz ... 8.5 GHz

This command sets the RF frequency in Moving Delay mode. Example: :SOUR:FSIM:MDEL:CHAN:RF 600 MHz *RST value is 100 MHz

[:SOURce]:FSIMulator:BIRThdeath:CHANnel:RF 5.0 MHz ... 8.5 GHz

This command sets the RF frequency in Birth-Death mode. Example: :SOUR:FSIM:BIRT:CHAN:RF 600 MHz *RST value is 100 MHz

1114.8564.12 B E-1

ABFS Tabbed Divider Overview

Tabbed Divider Overview

Contents

Data Sheet

Safety Instructions Certificate of Quality EC Certificate of Conformity List of R&S Representatives

General Overview of Manuals

Divider

1 Chapter 1 Preparation for Use

2 Chapter 2 Introduction to Operation

3 Chapter 3 Manual Operation

4 Chapter 4 Functions

5 Chapter 5 Remote Control – Basics

6 Chapter 6 Remote Control – Commands

7 Chapter 7 Remote Control – Programming Examples

8 Chapter 8 Maintenance

9 Chapter 9 Error Messages

10 Chapter 10 Index

1114.8564.12 RE E-1

Supplement to Data Sheet ABFS

Enhanced fading functions for WCDMA 3GPP with option ABFSB49

ABFSB49 extends the functi onality of the baseband fading sim ulator ABFS to include W CDMA 3GPP channel simulation. It adds three new modes to the fading sim ulator so that all scenarios defined in 3GPP Release 99 can be simulated:

• In fine delay mode, fading simulator resolution is increased to 1 ns with up to four paths being available.

• In moving dela y mode, two paths are sim ulated: for one path the del ay remains cons tant, whereas for the other path the delay varies continuously.

• In birth-death mode, there are two paths changing delay in steps in accordance with the 3GPP channel model.

Specifications

The enhanced fading functions for WCDMA 3GPP are only available for the ABFS standard fading simulator, not for the second fading simulator (option ABFS-B2).

Modes Standard fading, fine delay, birth-death Setting time after RF frequency change 6 ms

Fine delay mode

RF banwidth 4.8 MHz Number of paths 4 Profiles Rayleigh, pure Doppler Delay 25 ns to 1637 µs Delay resolution 1 ns

Moving delay mode

RF bandwidth 4.8 MHz Number of paths 2 Delay, path 1 0 to 1000 µs (in 50 ns steps) Delay, path 2

Delay variation (peak-peak) 150 ns to 50 µs Variation period 10 s to 500 s Delay step si ze <1 ns

Profiles None

Birth-death mode

Number of paths 2 Profiles pure Doppler Delay 5 µs to 1000 µs Delay range (birth-death process) -5 µs to +5 µs (not variable) Delay grid 1 µs (not variable) Hopping dwell 100 ms to 5 s

1pathdelay

variationdelay

pk-pk

⋅+

sin

periodiationvar

Ordering Information

Enhanced fading functions for WCDMA 3GPP ABFSB49 1115.0909.02

1114.8564.12 A E-1

ABFS Contents

Contents

1 Putting into Operation.........................................................................................1.1

General Instructions........................................................................................................................ 1.1

Unpacking the Instrument .............................................................................................................. 1.1

Supply Voltage................................................................................................................................. 1.1

How to Ensure EMC.........................................................................................................................1.1

Switching On/Off the Instrument....................................................................................................1.2

Initial Status......................................................................................................................................1.2

Setting Contrast and Brightness of the Display...........................................................................1.2

RAM With Battery Back-Up.............................................................................................................1.2

Preset Setting................................................................................................................................... 1.3

Functional Test ................................................................................................................................1.3

Mounting into a 19" Rack................................................................................................................1.3

Explanation of Front and Rear Panel.............................................................................................1.5

Elements of the Front Panel....................................................................................................1.5

Elements of the Rear Panel...................................................................................................1.13

2 Brief Introduction ................................................................................................ 2.1

Connection of ABFS........................................................................................................................2.1

Sample Settings for First-Time Users............................................................................................2.2

3 Manual Operation................................................................................................ 3.1

Design of the Display ......................................................................................................................3.1

Basic Operating Steps.....................................................................................................................3.2

Calling the menus....................................................................................................................3.2

Selection and Change of Parameters......................................................................................3.3

Triggering Action...................................................................................................................... 3.4

Quick Selection of Menu (QUICK SELECT)............................................................................3.4

Using Keys [MODE GRP A] and [MODE GRP B].................................................................... 3.4

Using Keys [FADING ON/OFF] and [AWGN ON/OFF]........................................................... 3.5

Correction of Input...................................................................................................................3.5

List Editor.........................................................................................................................................3.6

Select and Generate - SELECT LIST......................................................................................3.7

Deletion of Lists - DELETE LIST ............................................................................................. 3.9

Edition of Lists .......................................................................................................................3.10

SAVE/RECALL – Storing/Calling of Instrument Settings........................................................... 3.15

Menu Summary.............................................................................................................................. 3.16

1114.8564.12 3 E-2

Contents ABFS

4 Device Functions................................................................................................. 4.1

Fading Modes...................................................................................................................................4.1

Basic Units With 12 Paths.......................................................................................................4.1

Fading With Option ABFS-B2.................................................................................................. 4.3

Fading Setting Parameters - Correlation Between Paths........................................................4.3

FSIM Menu (without option B49) /STANDARD FAD Menu (with option B49)......................... 4.5

FINE DELAY Menu................................................................................................................4.10

MOVING DELAY Menu .........................................................................................................4.12

BIRTH-DEATH Menu ............................................................................................................ 4.14

Noise Generator............................................................................................................................. 4.16

MODE Menu With Built-in Noise Generators Option ABFS-B1 / Option ABFS-B3 .............. 4.17

AWGN Menu .........................................................................................................................4.19

Calibration...................................................................................................................................... 4.20

CALIBRATE Menu.................................................................................................................4.20

Memory Sequence......................................................................................................................... 4.21

Modes (MODE)......................................................................................................................4.22

External Trigger..................................................................................................................... 4.22

HOP CONTROL .............................................................................................................................. 4.25

HOP CONTROL Without Trigger Control.............................................................................. 4.26

HOP CONTROL With Trigger Control................................................................................... 4.27

HOP CONTROL Menu ..........................................................................................................4.28

Utilities............................................................................................................................................4.31

IEC/IEEE-Bus Address (SYSTEM - GPIB)............................................................................4.31

Parameter of RS-232-C Interface (SYSTEM - RS232) .........................................................4.32

Display of IEC/IEEE-Bus Language ...................................................................................... 4.33

Password Entry With Protected Functions (PROTECT) ....................................................... 4.34

Display of Module Versions (DIAG-CONFIG)........................................................................4.35

Voltage Indication of Testpoints (DIAG-TPOINT)..................................................................4.36

Indication of Service Data (DIAG - PARAM) .........................................................................4.37

Test (TEST)...........................................................................................................................4.38

Set Trigger Inputs (TRIGGER)..............................................................................................4.39

Switch On/Off of Beeper........................................................................................................ 4.40

Help System ................................................................................................................................... 4.41

Status..............................................................................................................................................4.42

5 Remote Control - Basic Information..................................................................5.1

Brief Instructions.............................................................................................................................5.1

IEC/IEEE Bus ..........................................................................................................................5.1

RS-232-C Interface..................................................................................................................5.2

Switchover to Remote Control ....................................................................................................... 5.3

Remote Control via IEC/IEEE Bus........................................................................................... 5.3

Setting the Device Address.........................................................................................5.3

Indications during Remote Control ............................................................................. 5.3

Return to Manual Operation........................................................................................5.4

Remote Control via RS-232-C Interface.................................................................................. 5.4

Setting the Transmission Parameters ........................................................................ 5.4

Indications during Remote Control ............................................................................. 5.4

Return to Manual Operation........................................................................................5.4

1114.8564.12 4 E-2

ABFS Contents

Messages..........................................................................................................................................5.5

Interface Messages .................................................................................................................5.5

Device Messages (Commands and Device Responses) ........................................................5.5

Structure and Syntax of Device Messages ...................................................................................5.6

Introduction to SCPI.................................................................................................................5.6

Structure of Commands .......................................................................................................... 5.6

Structure of Command Lines................................................................................................... 5.9

Responses to Queries.............................................................................................................5.9

Parameters............................................................................................................................5.10

Overview of Syntax Elements................................................................................................5.12

Instrument Model and Command Processing ............................................................................ 5.13

Input Unit ...............................................................................................................................5.13

Command Recognition.......................................................................................................... 5.14

Data Set and Instrument Hardware....................................................................................... 5.14

Status Reporting System....................................................................................................... 5.14

Output Unit.............................................................................................................................5.15

Command Sequence and Command Synchronization..........................................................5.15

Status Reporting System..............................................................................................................5.16

Structure of an SCPI Status Register.................................................................................... 5.16

Overview of Status Registers ................................................................................................5.18

Description of Status Registers ............................................................................................. 5.19

Status Byte (STB) and Service Request Enable Register (SRE) ............................. 5.19

IST Flag and Parallel Poll Enable Register (PPE) ....................................................5.20

Event Status Register (ESR) and Event Status Enable Register (ESE)................... 5.20

STATus:OPERation Register ...................................................................................5.21

STATus:QUEStionable Register...............................................................................5.21

Use of Status Reporting System ...........................................................................................5.22

Service Request, Making Use of Hierarchy Structure ..............................................5.22

Serial Poll 5.22

Parallel Poll...............................................................................................................5.23

Query by Means of Commands................................................................................5.23

Error Queue Query ...................................................................................................5.23

Reset Values of Status Reporting System ............................................................................5.24

Interfaces........................................................................................................................................5.25

IEC/IEEE-Bus Interface......................................................................................................... 5.25

Characteristics of Interface.......................................................................................5.25

Bus Lines 5.25

Interface Functions ...................................................................................................5.26

Interface Messages .................................................................................................. 5.27

RS-232-C Interface................................................................................................................5.28

Characteristics of Interface.......................................................................................5.28

Signal Lines .............................................................................................................. 5.28

Transmission Parameters......................................................................................... 5.29

Interface Functions ...................................................................................................5.29

Handshake................................................................................................................ 5.30

1114.8564.12 5 E-2

Contents ABFS

6 Remote Control – Command Description ......................................................... 6.1

Notation ............................................................................................................................................6.1

Common Commands....................................................................................................................... 6.3

ABORt System..................................................................................................................................6.6

CALibration System.........................................................................................................................6.7

DIAGnostic System.......................................................................................................................... 6.9

FORMat System .............................................................................................................................6.10

SOURCe:AWGN Subsystem......................................................................................................... 6.11

SOURce:FSIM Subsystem.............................................................................................................6.13

SOURce:HOP Subsystem ............................................................................................................. 6.26

STATus System.............................................................................................................................. 6.28

SYSTem System............................................................................................................................. 6.31

TEST System..................................................................................................................................6.37

TRIGger System.............................................................................................................................6.39

Command List................................................................................................................................ 6.41

7 Remote Control - Programming Examples ....................................................... 7.1

Including IEC-Bus Library for QuickBasic .................................................................................... 7.1

Initialization and Default Status .....................................................................................................7.1

Initiate Controller......................................................................................................................7.1

Initiate Instrument....................................................................................................................7.1

Transmission of Instrument Setting Commands ......................................................................... 7.2

Switchover to Manual Control........................................................................................................7.2

Reading out Instrument Settings................................................................................................... 7.2

List Management .............................................................................................................................7.3

Command synchronization............................................................................................................. 7.3

Service Request...............................................................................................................................7.4

8 Maintenance......................................................................................................... 8.1

Cleaning the Outside....................................................................................................................... 8.1

Storing and Packing........................................................................................................................8.1

9 Error Messages ...................................................................................................9.1

List of Error Messages .................................................................................................................... 9.2

SCPI-Specific Error Messages................................................................................................ 9.2

ABFS- Specific Error Messages.............................................................................................. 9.6

10Index...................................................................................................................10.1

1114.8564.12 6 E-2

ABFS Contents

Tables

Table 4-1 Possible combinations of options with basic ABFS unit...............................................4.17

Table 4-2 Memory sequence; example of a list............................................................................4.21

Table 5-1 Synchronization by means of *OPC, *OPC? and *WAI................................................5.15

Table 5-2 Meaning of the bits used in the status byte..................................................................5.19

Table 5-3 Meaning of the bits used in the event status register...................................................5.20

Table 5-4 Meaning of the bits used in the STATus:OPERation register ......................................5.21

Table 5-5 Meaning of the bits used in the STATus:QUEStionable register..................................5.21

Table 5-6 Resetting of instrument functions.................................................................................5.24

Table 5-7 Interface functions........................................................................................................5.26

Table 5-8 Universal commands....................................................................................................5.27

Table 5-9 Addressed commands .................................................................................................5.27

Table 5-10 Control characters for RS-232-C interface...................................................................5.29

Table 6-1 Common Commands.....................................................................................................6.3

Table 6-2 Device response in case of OPT?..................................................................................6.4

1114.8564.12 7 E-2

Contents ABFS

Figures

Fig. 1-1 Front panel view ABFS....................................................................................................... 1.4

Fig. 1-2 Rear panel view ABFS......................................................................................................1.12

Fig. 2-1 Connection of Fading Simulator ABFS............................................................................... 2.1

Fig. 2-2 Signal input/outputs on rear panel of ABFS .......................................................................2.2

Fig. 2-3 Display for setting the fading mode ....................................................................................2.3

Fig. 2-4 Display for setting fading ....................................................................................................2.5

Fig. 3-1 Design of the display ..........................................................................................................3.1

Fig. 3-2 Fading setting menu...........................................................................................................3.2

Fig. 3-3 OPERATION page of the MEM SEQ menu .......................................................................3.6

Fig. 3-4 SELECT-LIST selection window.........................................................................................3.8

Fig. 3-5 DELETE-LIST selection window.........................................................................................3.9

Fig. 3-6 Edit function EDIT/VIEW ..................................................................................................3.10

Fig. 3-7 Edit function FILL: input window....................................................................................... 3.11

Fig. 3-8 Edit function INSERT: input window................................................................................. 3.13

Fig. 3-9 Edit function DELETE: input window................................................................................ 3.14

Fig. 4-1 Selection of operating modes in MODE submenu ............................................................. 4.1

Fig. 4-2 Display of signal paths in the MODE submenu.................................................................. 4.2

Fig. 4-3 MODE submenu with built-in option ABFS-B2................................................................... 4.3

Fig. 4-4 FSIM selection menu with option B49 (option ABFS-B2 not installed)............................... 4.4

Fig. 4-5 FSIM menu (without ABFS-B49 and without ABFS-B2) / STANDARD FAD menu (with

ABFS-B49) .........................................................................................................................4.5

Fig. 4-6 Doppler frequency shift with moving receiver.....................................................................4.8

Fig. 4-7 FINE DELAY menu........................................................................................................... 4.10

Fig. 4-8 MOVING DELAY .............................................................................................................. 4.12

Fig. 4-9 Example of hopping sequence with BIRTH-DEATH fading.............................................. 4.14

Fig. 4-10 BIRTH-DEATH menu .......................................................................................................4.14

Fig. 4-11 Block diagram of fading simulator with integral noise generator...................................... 4.16

Fig. 4-12 MODE menu (option ABFS-B1 installed) ......................................................................... 4.17

Fig. 4-13 MODE menu (options ABFS-B1 / ABFS-B2 installed)......................................................4.18

Fig. 4-14 MODE menu (options ABFS-B1 / ABFS-B2 / ABFS-B3 installed)....................................4.18

Fig. 4-15 AWGN menu....................................................................................................................4.19

Fig. 4-16 CALIBRATE menu............................................................................................................ 4.20

Fig. 4-17 MEM SEQ menu, OPERATION page .............................................................................. 4.23

Fig. 4-18 MEM SEQ menu, EDIT page ........................................................................................... 4.24

Fig. 4-19 Timing diagram during HOP CONTROL without trigger control....................................... 4.26

Fig. 4-20 Timing diagram during HOP CONTROL with trigger control............................................ 4.27

Fig. 4-21 HOP CONTROL menu..................................................................................................... 4.28

Fig. 4-22 HOP CONTROL menu, EDIT page..................................................................................4.30

Fig. 4-23 UTILITIES - SYSTEM – GPIB menu................................................................................ 4.31

Fig. 4-24 UTILITIES - SYSTEM – RS232 menu.............................................................................. 4.32

Fig. 4-25 UTILITIES - PROTECT menu (preset settings)............................................................... 4.34

Fig. 4-26 UTILITIES - DIAG – CONFIG menu.................................................................................4.35

1114.8564.12 8 E-2

ABFS Contents

Fig. 4-27 UTILITIES - DIAG – TPOINT menu .................................................................................4.36

Fig. 4-28 UTILITIES - DIAG – PARAM menu..................................................................................4.37

Fig. 4-29 UTILITIES – TEST menu .................................................................................................4.38

Fig. 4-30 UTILITIES – TRIGGER menu.......................................................................................... 4.39

Fig. 4-31 UTILITIES – BEEPER menu ............................................................................................ 4.40

Fig. 4-32 STATUS page .................................................................................................................. 4.42

Fig. 5-1 Tree structure of SCPI command systems using the SOURce system as an example..... 5.7

Fig. 5-2 Device model for remote control via the IEC/IEEE bus....................................................5.13

Fig. 5-3 Status register model........................................................................................................5.16

Fig. 5-4 Overview of status registers ............................................................................................. 5.18

Fig. 5-5 Pin assignment of IEC/IEEE-bus interface....................................................................... 5.25

Fig. 5-6 Pin assignment of RS-232-C interface.............................................................................5.28

Fig. 5-7 Wiring of data, control and signalling lines for hardware handshake............................... 5.30

Fig. 9-1 ERROR page...................................................................................................................... 9.1

1114.8564.12 9 E-2

Before putting the product into operation for

the first time, make sure to read the following

Safety Instructions

Rohde & Schwarz makes every effort to keep the safety standard of its products up to date and to offer its customers the highest possible degree of safety. Our products and the auxiliary equipment required for them are designed and tested in accordance with the relevant safety standards. Compliance with these standards is continuously monitored by our quality assurance system. This product has been designed and tested in accordance with the EC Certificate of Conformity and has left the manufacturer’s plant in a condition fully complying with safety standards. To maintain this condition and to ensure safe operation, observe all instructions and warnings provided in this manual. If you have any questions regarding these safety instructions, Rohde & Schwarz will be happy to answer them.

Furthermore, it is your responsibility to use the product in an appropriate manner. This product is designed for use solely in industrial and laboratory environments or in the field and must not be used in any way that may cause personal injury or property damage. You are responsible if the product is used for an intention other than its designated purpose or in disregard of the manufacturer's instructions. The manufacturer shall assume no responsibility for such use of the product.

The product is used for its designated purpose if it is used in accordance with its operating manual and within its performance limits (see data sheet, documentation, the following safety instructions). Using the products requires technical skills and knowledge of English. It is therefore essential that the products be used exclusively by skilled and specialized staff or thoroughly trained personnel with the required skills. If personal safety gear is required for using Rohde & Schwarz products, this will be indicated at the appropriate place in the product documentation.

Observe operating instructions

Supply voltage ON/OFF

Weight indication for units >18 kg

Standby indication

Symbols and safety labels

Danger of electric shock

Direct current (DC)

Warning! Hot surface

PE terminal Ground

Alternating current (AC)

Direct/alternating current (DC/AC)

Ground terminal

Device fully protected by double/reinforced insulation

Attention! Electrostatic sensitive devices

1171.0000.42-02.00 Sheet 1

Safety Instructions

Observing the safety instructions will help prevent personal injury or damage of any kind caused by dangerous situations. Therefore, carefully read through and adhere to the following safety instructions before putting the product into operation. It is also absolutely essential to observe the additional safety instructions on personal safety that appear in other parts of the documentation. In these safety instructions, the word "product" refers to all merchandise sold and distributed by Rohde & Schwarz, including instruments, systems and all accessories.

Tags and their meaning

DANGER

WARNING

CAUTION This tag indicates a safety hazard with a low potential of risk for the user

ATTENTION

NOTE

These tags are in accordance with the standard definition for civil applications in the European Economic Area. Definitions that deviate from the standard definition may also exist. It is therefore essential to make sure that the tags described here are always used only in connection with the associated documentation and the associated product. The use of tags in connection with unassociated products or unassociated documentation can result in misinterpretations and thus contribute to personal injury or material damage.

This tag indicates a safety hazard with a high potential of risk for the user that can result in death or serious injuries.

This tag indicates a safety hazard with a medium potential of risk for the user that can result in death or serious injuries.

that can result in slight or minor injuries.

This tag indicates the possibility of incorrect use that can cause damage to the product.

This tag indicates a situation where the user should pay special attention to operating the product but which does not lead to damage.

Basic safety instructions

1. The product may be operated only under

the operating conditions and in the positions specified by the manufacturer. Its ventilation must not be obstructed during operation. Unless otherwise specified, the following requirements apply to Rohde & Schwarz products: prescribed operating position is always with the housing floor facing down, IP protection 2X, pollution severity 2, overvoltage category 2, use only in enclosed spaces, max. operation altitude max. 2000 m. Unless specified otherwise in the data sheet, a tolerance of ±10% shall apply to the nominal voltage and of ±5% to the nominal frequency.

2. Applicable local or national safety

regulations and rules for the prevention of accidents must be observed in all work performed. The product may be opened only by authorized, specially trained personnel. Prior to performing any work on the product or opening the product, the

product must be disconnected from the supply network. Any adjustments, replacements of parts, maintenance or repair must be carried out only by technical personnel authorized by Rohde & Schwarz. Only original parts may be used for replacing parts relevant to safety (e.g. power switches, power transformers, fuses). A safety test must always be performed after parts relevant to safety have been replaced (visual inspection, PE conductor test, insulation resistance measurement, leakage current measurement, functional test).

3. As with all industrially manufactured goods, the use of substances that induce an allergic reaction (allergens, e.g. nickel) such as aluminum cannot be generally excluded. If you develop an allergic reaction (such as a skin rash, frequent sneezing, red eyes or respiratory difficulties), consult a physician immediately to determine the cause.

1171.0000.42-02.00 Sheet 2

Safety Instructions

4. If products/components are mechanically and/or thermically processed in a manner that goes beyond their intended use, hazardous substances (heavy-metal dust such as lead, beryllium, nickel) may be released. For this reason, the product may only be disassembled, e.g. for disposal purposes, by specially trained personnel. Improper disassembly may be hazardous to your health. National waste disposal regulations must be observed.

5. If handling the product yields hazardous substances or fuels that must be disposed of in a special way, e.g. coolants or engine oils that must be replenished regularly, the safety instructions of the manufacturer of the hazardous substances or fuels and the applicable regional waste disposal regulations must be observed. Also observe the relevant safety instructions in the product documentation.

6. Depending on the function, certain products such as RF radio equipment can produce an elevated level of electromagnetic radiation. Considering that unborn life requires increased protection, pregnant women should be protected by appropriate measures. Persons with pacemakers may also be endangered by electromagnetic radiation. The employer is required to assess workplaces where there is a special risk of exposure to radiation and, if necessary, take measures to avert the danger.

7. Operating the products requires special training and intense concentration. Make certain that persons who use the products are physically, mentally and emotionally fit enough to handle operating the products; otherwise injuries or material damage may occur. It is the responsibility of the employer to select suitable personnel for operating the products.

8. Prior to switching on the product, it must be ensured that the nominal voltage setting on the product matches the nominal voltage of the AC supply network. If a different voltage is to be set, the power fuse of the product may have to be changed accordingly.

9. In the case of products of safety class I with movable power cord and connector, operation is permitted only on sockets with earthing contact and protective earth connection.

10. Intentionally breaking the protective earth connection either in the feed line or in the product itself is not permitted. Doing so can result in the danger of an electric shock from the product. If extension cords or connector strips are implemented, they must be checked on a regular basis to ensure that they are safe to use.

11. If the product has no power switch for disconnection from the AC supply, the plug of the connecting cable is regarded as the disconnecting device. In such cases, it must be ensured that the power plug is easily reachable and accessible at all times (length of connecting cable approx. 2 m). Functional or electronic switches are not suitable for providing disconnection from the AC supply. If products without power switches are integrated in racks or systems, a disconnecting device must be provided at the system level.

12. Never use the product if the power cable is damaged. By taking appropriate safety measures and carefully laying the power cable, ensure that the cable cannot be damaged and that no one can be hurt by e.g. tripping over the cable or suffering an electric shock.

13. The product may be operated only from TN/TT supply networks fused with max. 16 A.

14. Do not insert the plug into sockets that are dusty or dirty. Insert the plug firmly and all the way into the socket. Otherwise this can result in sparks, fire and/or injuries.

15. Do not overload any sockets, extension cords or connector strips; doing so can cause fire or electric shocks.

16. For measurements in circuits with voltages V

> 30 V, suitable measures (e.g.

rms

appropriate measuring equipment, fusing, current limiting, electrical separation, insulation) should be taken to avoid any hazards.

17. Ensure that the connections with information technology equipment comply with IEC 950/EN 60950.

18. Never remove the cover or part of the housing while you are operating the product. This will expose circuits and components and can lead to injuries, fire or damage to the product.

1171.0000.42-02.00 Sheet 3

Safety Instructions

19. If a product is to be permanently installed, the connection between the PE terminal on site and the product's PE conductor must be made first before any other connection is made. The product may be installed and connected only by a skilled electrician.

20. For permanently installed equipment without built-in fuses, circuit breakers or similar protective devices, the supply circuit must be fused in such a way that suitable protection is provided for users and products.

21. Do not insert any objects into the openings in the housing that are not designed for this purpose. Never pour any liquids onto or into the housing. This can cause short circuits inside the product and/or electric shocks, fire or injuries.

22. Use suitable overvoltage protection to ensure that no overvoltage (such as that caused by a thunderstorm) can reach the product. Otherwise the operating personnel will be endangered by electric shocks.

23. Rohde & Schwarz products are not protected against penetration of water, unless otherwise specified (see also safety instruction 1.). If this is not taken into account, there exists the danger of electric shock or damage to the product, which can also lead to personal injury.

24. Never use the product under conditions in which condensation has formed or can form in or on the product, e.g. if the product was moved from a cold to a warm environment.

matching Rohde & Schwarz type (see spare parts list). Batteries and storage batteries are hazardous waste. Dispose of them only in specially marked containers. Observe local regulations regarding waste disposal. Do not short-circuit batteries or storage batteries.

28. Please be aware that in the event of a fire, toxic substances (gases, liquids etc.) that may be hazardous to your health may escape from the product.

29. Please be aware of the weight of the product. Be careful when moving it; otherwise you may injure your back or other parts of your body.

30. Do not place the product on surfaces, vehicles, cabinets or tables that for reasons of weight or stability are unsuitable for this purpose. Always follow the manufacturer's installation instructions when installing the product and fastening it to objects or structures (e.g. walls and shelves).

31. Handles on the products are designed exclusively for personnel to hold or carry the product. It is therefore not permissible to use handles for fastening the product to or on means of transport such as cranes, fork lifts, wagons, etc. The user is responsible for securely fastening the products to or on the means of transport and for observing the safety regulations of the manufacturer of the means of transport. Noncompliance can result in personal injury or material damage.

25. Do not close any slots or openings on the product, since they are necessary for ventilation and prevent the product from overheating. Do not place the product on soft surfaces such as sofas or rugs or inside a closed housing, unless this is well ventilated.

26. Do not place the product on heatgenerating devices such as radiators or fan heaters. The temperature of the environment must not exceed the maximum temperature specified in the data sheet.

27. Batteries and storage batteries must not be exposed to high temperatures or fire. Keep batteries and storage batteries away from children. If batteries or storage batteries are improperly replaced, this can cause an explosion (warning: lithium cells). Replace the battery or storage battery only with the

1171.0000.42-02.00 Sheet 4

32. If you use the product in a vehicle, it is the sole responsibility of the driver to drive the vehicle safely. Adequately secure the product in the vehicle to prevent injuries or other damage in the event of an accident. Never use the product in a moving vehicle if doing so could distract the driver of the vehicle. The driver is always responsible for the safety of the vehicle; the manufacturer assumes no responsibility for accidents or collisions.

33. If a laser product (e.g. a CD/DVD drive) is integrated in a Rohde & Schwarz product, do not use any other settings or functions than those described in the documentation. Otherwise this may be hazardous to your health, since the laser beam can cause irreversible damage to your eyes. Never try to take such products apart, and never look into the laser beam.

Por favor lea imprescindiblemente antes de la primera puesta en funcionamiento las siguientes informaciones de seguridad

Informaciones de seguridad

Es el principio de Rohde & Schwarz de tener a sus productos siempre al día con los estandards de seguridad y de ofrecer a sus clientes el máximo grado de seguridad. Nuestros productos y todos los equipos adicionales son siempre fabricados y examinados según las normas de seguridad vigentes. Nuestra sección de gestión de la seguridad de calidad controla constantemente que sean cumplidas estas normas. Este producto ha sido fabricado y examinado según el comprobante de conformidad adjunto según las normas de la CE y ha salido de nuestra planta en estado impecable según los estandards técnicos de seguridad. Para poder preservar este estado y garantizar un funcionamiento libre de peligros, deberá el usuario atenerse a todas las informaciones, informaciones de seguridad y notas de alerta. Rohde&Schwarz está siempre a su disposición en caso de que tengan preguntas referentes a estas informaciones de seguridad.

Además queda en la responsabilidad del usuario utilizar el producto en la forma debida. Este producto solamente fue elaborado para ser utilizado en la indústria y el laboratorio o para fines de campo y de ninguna manera deberá ser utilizado de modo que alguna persona/cosa pueda ser dañada. El uso del producto fuera de sus fines definidos o despreciando las informaciones de seguridad del fabricante queda en la responsabilidad del usuario. El fabricante no se hace en ninguna forma responsable de consecuencias a causa del maluso del producto.

Se parte del uso correcto del producto para los fines definidos si el producto es utilizado dentro de las instrucciones del correspondiente manual del uso y dentro del margen de rendimiento definido (ver hoja de datos, documentación, informaciones de seguridad que siguen). El uso de los productos hace necesarios conocimientos profundos y el conocimiento del idioma inglés. Por eso se deberá tener en cuenta de exclusivamente autorizar para el uso de los productos a personas péritas o debidamente minuciosamente instruidas con los conocimientos citados. Si fuera necesaria indumentaria de seguridad para el uso de productos de R&S, encontrará la información debida en la documentación del producto en el capítulo correspondiente.

Símbolos y definiciones de seguridad

Ver manual de instrucciones del uso

Informaciones para maquinaria con uns peso de > 18kg

Peligro de golpe de corriente

¡Advertencia! Superficie caliente

Conexión a conductor protector

Conexión a tierra

Conexión a masa conductora

¡Cuidado! Elementos de construción con peligro de carga electroestática

El aparato está protegido en su totalidad por un aislamiento de doble refuerzo

potencia EN MARCHA/PARADA

Indicación Stand-by

Corriente continua DC

Corriente alterna AC

Corriente continua/alterna DC/AC

1171.0000.42-02.00 página 1

Informaciones de seguridad

Tener en cuenta las informaciones de seguridad sirve para tratar de evitar daños y peligros de toda clase. Es necesario de que se lean las siguientes informaciones de seguridad concienzudamente y se tengan en cuenta debidamente antes de la puesta en funcionamiento del producto. También deberán ser tenidas en cuenta las informaciones para la protección de personas que encontrarán en otro capítulo de esta documentación y que también son obligatorias de seguir. En las informaciones de seguridad actuales hemos juntado todos los objetos vendidos por Rohde&Schwarz bajo la denominación de „producto“, entre ellos también aparatos, instalaciones así como toda clase de accesorios.

Palabras de señal y su significado

PELIGRO Indica un punto de peligro con gran potencial de riesgo para el

ususario.Punto de peligro que puede llevar hasta la muerte o graves heridas.

ADVERTENCIA Indica un punto de peligro con un protencial de riesgo mediano para el

usuario. Punto de peligro que puede llevar hasta la muerte o graves heridas .

ATENCIÓN Indica un punto de peligro con un protencial de riesgo pequeño para el

usuario. Punto de peligro que puede llevar hasta heridas leves o pequeñas

CUIDADO Indica la posibilidad de utilizar mal el producto y a consecuencia

dañarlo.

INFORMACIÓN Indica una situación en la que deberían seguirse las instrucciones en el

uso del producto, pero que no consecuentemente deben de llevar a un daño del mismo.

Las palabras de señal corresponden a la definición habitual para aplicaciones civiles en el ámbito de la comunidad económica europea. Pueden existir definiciones diferentes a esta definición. Por eso se debera tener en cuenta que las palabras de señal aquí descritas sean utilizadas siempre solamente en combinación con la correspondiente documentación y solamente en combinación con el producto correspondiente. La utilización de las palabras de señal en combinación con productos o documentaciones que no les correspondan puede llevar a malinterpretaciones y tener por consecuencia daños en personas u objetos.

Informaciones de seguridad elementales

1. El producto solamente debe ser utilizado según lo indicado por el fabricante referente a la situación y posición de funcionamiento sin que se obstruya la ventilación. Si no se convino de otra manera, es para los productos R&S válido lo que sigue: como posición de funcionamiento se define principialmente la posición con el suelo de la caja para abajo , modo de protección IP 2X, grado de suciedad 2, categoría de sobrecarga eléctrica 2, utilizar solamente en estancias interiores, utilización hasta 2000 m sobre el nivel del mar. A menos que se especifique otra cosa en la hoja de datos, se aplicará una tolerancia de ±10% sobre el voltaje nominal y de ±5% sobre la frecuencia nominal.

2. En todos los trabajos deberán ser tenidas en cuenta las normas locales de seguridad de trabajo y de prevención de accidentes. El producto solamente debe de ser abierto por personal périto autorizado. Antes de efectuar trabajos en el producto o abrirlo deberá este ser desconectado de la corriente. El ajuste, el cambio de partes, la manutención y la reparación deberán ser solamente efectuadas por electricistas autorizados por R&S. Si se reponen partes con importancia para los aspectos de seguridad (por ejemplo el enchufe, los transformadores o los fusibles), solamente podrán ser sustituidos por partes originales. Despues de cada recambio de partes elementales para la seguridad deberá ser efectuado un control de

1171.0000.42-02.00 página 2

Informaciones de seguridad

seguridad (control a primera vista, control de conductor protector, medición de resistencia de aislamiento, medición de medición de la corriente conductora, control de funcionamiento).

3. Como en todo producto de fabricación industrial no puede ser excluido en general de que se produzcan al usarlo elementos que puedan generar alergias, los llamados elementos alergénicos (por ejemplo el níquel). Si se producieran en el trato con productos R&S reacciones alérgicas, como por ejemplo urticaria, estornudos frecuentes, irritación de la conjuntiva o dificultades al respirar, se deberá consultar inmediatamente a un médico para averigurar los motivos de estas reacciones.

4. Si productos / elementos de construcción son tratados fuera del funcionamiento definido de forma mecánica o térmica, pueden generarse elementos peligrosos (polvos de sustancia de metales pesados como por ejemplo plomo, berilio, níquel). La partición elemental del producto, como por ejemplo sucede en el tratamiento de materias residuales, debe de ser efectuada solamente por personal especializado para estos tratamientos. La partición elemental efectuada inadecuadamente puede generar daños para la salud. Se deben tener en cuenta las directivas nacionales referentes al tratamiento de materias residuales.

5. En el caso de que se produjeran agentes de peligro o combustibles en la aplicación del producto que debieran de ser transferidos a un tratamiento de materias residuales, como por ejemplo agentes refrigerantes que deben ser repuestos en periodos definidos, o aceites para motores, deberan ser tenidas en cuenta las prescripciones de seguridad del fabricante de estos agentes de peligro o combustibles y las regulaciones regionales para el tratamiento de materias residuales. Cuiden también de tener en cuenta en caso dado las prescripciones de seguridad especiales en la descripción del producto.

6. Ciertos productos, como por ejemplo las instalaciones de radiación HF, pueden a causa de su función natural, emitir una radiación electromagnética aumentada. En vista a la protección de la vida en desarrollo deberían ser protegidas personas embarazadas debidamente. También las personas con un bypass pueden correr

peligro a causa de la radiación electromagnética. El empresario está comprometido a valorar y señalar areas de trabajo en las que se corra un riesgo de exposición a radiaciones aumentadas de riesgo aumentado para evitar riesgos.

7. La utilización de los productos requiere instrucciones especiales y una alta concentración en el manejo. Debe de ponerse por seguro de que las personas que manejen los productos estén a la altura de los requerimientos necesarios referente a sus aptitudes físicas, psíquicas y emocionales, ya que de otra manera no se pueden excluir lesiones o daños de objetos. El empresario lleva la responsabilidad de seleccionar el personal usuario apto para el manejo de los productos.

8. Antes de la puesta en marcha del producto se deberá tener por seguro de que la tensión preseleccionada en el producto equivalga a la del la red de distribución. Si es necesario cambiar la preselección de la tensión también se deberán en caso dabo cambiar los fusibles correspondientes del prodcuto.

9. Productos de la clase de seguridad I con alimentación móvil y enchufe individual de producto solamente deberán ser conectados para el funcionamiento a tomas de corriente de contacto de seguridad y con conductor protector conectado.

10. Queda prohibida toda clase de interrupción intencionada del conductor protector, tanto en la toma de corriente como en el mismo producto ya que puede tener como consecuencia el peligro de golpe de corriente por el producto. Si se utilizaran cables o enchufes de extensión se deberá poner al seguro, que es controlado su estado técnico de seguridad.

11. Si el producto no está equipado con un interruptor para desconectarlo de la red, se deberá considerar el enchufe del cable de distribución como interruptor. En estos casos deberá asegurar de que el enchufe sea de fácil acceso y nabejo (medida del cable de distribución aproximadamente 2 m). Los interruptores de función o electrónicos no son aptos para el corte de la red eléctrica. Si los productos sin interruptor están integrados en construciones o instalaciones, se deberá instalar el interruptor al nivel de la instalación.

1171.0000.42-02.00 página 3

Informaciones de seguridad

12. No utilice nunca el producto si está dañado el cable eléctrico. Asegure a través de las medidas de protección y de instalación adecuadas de que el cable de eléctrico no pueda ser dañado o de que nadie pueda ser dañado por él, por ejemplo al tropezar o por un golpe de corriente.

13. Solamente está permitido el funcionamiento en redes de distribución TN/TT aseguradas con fusibles de como máximo 16 A.

14. Nunca conecte el enchufe en tomas de corriente sucias o llenas de polvo. Introduzca el enchufe por completo y fuertemente en la toma de corriente. Si no tiene en consideración estas indicaciones se arriesga a que se originen chispas, fuego y/o heridas.

15. No sobrecargue las tomas de corriente, los cables de extensión o los enchufes de extensión ya que esto pudiera causar fuego o golpes de corriente.

16. En las mediciones en circuitos de corriente con una tensión de entrada de Ueff > 30 V se deberá tomar las precauciones debidas para impedir cualquier peligro (por ejemplo medios de medición adecuados, seguros, limitación de tensión, corte protector, aislamiento etc.).

17. En caso de conexión con aparatos de la técnica informática se deberá tener en cuenta que estos cumplan los requisitos de la EC950/EN60950.

18. Nunca abra la tapa o parte de ella si el producto está en funcionamiento. Esto pone a descubierto los cables y componentes eléctricos y puede causar heridas, fuego o daños en el producto.

19. Si un producto es instalado fijamente en un lugar, se deberá primero conectar el conductor protector fijo con el conductor protector del aparato antes de hacer cualquier otra conexión. La instalación y la conexión deberán ser efecutadas por un electricista especializado.

20. En caso de que los productos que son instalados fijamente en un lugar sean sin protector implementado, autointerruptor o similares objetos de protección, deberá la toma de corriente estar protegida de manera que los productos o los usuarios estén suficientemente protegidos.

21. Por favor, no introduzca ningún objeto que no esté destinado a ello en los orificios de la caja del aparato. No vierta nunca ninguna clase de líquidos sobre o en la caja. Esto puede producir corto circuitos en el producto y/o puede causar golpes de corriente, fuego o heridas.

22. Asegúrese con la protección adecuada de que no pueda originarse en el producto una sobrecarga por ejemplo a causa de una tormenta. Si no se verá el personal que lo utilice expuesto al peligro de un golpe de corriente.

23. Los productos R&S no están protegidos contra el agua si no es que exista otra indicación, ver también punto 1. Si no se tiene en cuenta esto se arriesga el peligro de golpe de corriente o de daños en el producto lo cual también puede llevar al peligro de personas.

24. No utilice el producto bajo condiciones en las que pueda producirse y se hayan producido líquidos de condensación en o dentro del producto como por ejemplo cuando se desplaza el producto de un lugar frío a un lugar caliente.

25. Por favor no cierre ninguna ranura u orificio del producto, ya que estas son necesarias para la ventilación e impiden que el producto se caliente demasiado. No pongan el producto encima de materiales blandos como por ejemplo sofás o alfombras o dentro de una caja cerrada, si esta no está suficientemente ventilada.

26. No ponga el producto sobre aparatos que produzcan calor, como por ejemplo radiadores o calentadores. La temperatura ambiental no debe superar la temperatura máxima especificada en la hoja de datos.

1171.0000.42-02.00 página 4

Informaciones de seguridad

27. Baterías y acumuladores no deben de ser expuestos a temperaturas altas o al fuego. Guardar baterías y acumuladores fuera del alcance de los niños. Si las baterías o los acumuladores no son cambiados con la debida atención existirá peligro de explosión (atención celulas de Litio). Cambiar las baterías o los acumuladores solamente por los del tipo R&S correspondiente (ver lista de piezas de recambio). Baterías y acumuladores son deshechos problemáticos. Por favor tirenlos en los recipientes especiales para este fín. Por favor tengan en cuenta las prescripciones nacionales de cada país referente al tratamiento de deshechos. Nunca sometan las baterías o acumuladores a un corto circuito.

28. Tengan en consideración de que en caso de un incendio pueden escaparse gases tóxicos del producto, que pueden causar daños a la salud.

29. Por favor tengan en cuenta que en caso de un incendio pueden desprenderse del producto agentes venenosos (gases, líquidos etc.) que pueden generar daños a la salud.

30. No sitúe el producto encima de superficies, vehículos, estantes o mesas, que por sus características de peso o de estabilidad no sean aptas para él. Siga siempre las instrucciones de instalación del fabricante cuando instale y asegure el producto en objetos o estructuras (por ejemplo paredes y estantes).

31. Las asas instaladas en los productos sirven solamente de ayuda para el manejo que solamente está previsto para personas. Por eso no está permitido utilizar las asas para la sujecion en o sobre medios de transporte como por ejemplo grúas, carretillas elevadoras de horquilla, carros etc. El usuario es responsable de que los productos sean sujetados de forma segura a los medios de transporte y de que las prescripciones de seguridad del fabricante de los medios de transporte sean tenidas en cuenta. En caso de que no se tengan en cuenta pueden causarse daños en personas y objetos.

32. Si llega a utilizar el producto dentro de un vehículo, queda en la responsabilidad absoluta del conductor que conducir el vehículo de manera segura. Asegure el producto dentro del vehículo debidamente para evitar en caso de un accidente las lesiones u otra clase de daños. No utilice nunca el producto dentro de un vehículo en movimiento si esto pudiera distraer al conductor. Siempre queda en la responsabilidad absoluta del conductor la seguridad del vehículo y el fabricante no asumirá ninguna clase de responsabilidad por accidentes o colisiones.

33. Dado el caso de que esté integrado un producto de laser en un producto R&S (por ejemplo CD/DVD-ROM) no utilice otras instalaciones o funciones que las descritas en la documentación. De otra manera pondrá en peligro su salud, ya que el rayo laser puede dañar irreversiblemente sus ojos. Nunca trate de descomponer estos productos. Nunca mire dentro del rayo laser.

1171.0000.42-02.00 página 5

Certificate No.: 99037

This is to certify that:

Equipment type Order No. Designation

ABFS 1114.8506.02 Baseband Fading Simulator ABFS-B1 1115.0009.02 Option: Noise Generator

ABFS-B2 1115.0309.02 Option: Second Fading Simulator ABFS-B3 1115.0609.02 Option: Second Noise Generator

EC Certificate of Conformity

complies with the provisions of the Directive of the Council of the European Union on the approximation of the laws of the Member States

- relating to electrical equipment for use within defined voltage limits (73/23/EEC revised by 93/68/EEC)

- relating to electromagnetic compatibility (89/336/EEC revised by 91/263/EEC, 92/31/EEC, 93/68/EEC)

Conformity is proven by compliance with the following standards: EN61010-1 : 1993 + A2 : 1995

EN50081-1 : 1992 EN50082-2 : 1995

Affixing the EC conformity mark as from 1999

ROHDE & SCHWARZ GmbH & Co. KG

Mühldorfstr. 15, D-81671 München

Munich, 1999-06-16 Central Quality Management FS-QZ / Becker

1114.8506.02 CE E-1

ABFS General Overview of Manuals

General Overview of Manuals

Operating Manual for Baseband Fading Simulator ABFS

This operating manual provides you with all the information necessary for putting into operation, manual and remote control as well as repair of Baseband Fading Simulator ABFS and also contains specifications of the instrument and available options.

The following options are described in this manual:

ABFS-B1 – Noise generator ABFS-B2 – Second Fading simulator ABFS-B3 – Second Noise generator

The contents of the chapters are as follows:

Data sheet informs you about guaranteed specifications relating to functions and

characteristics of the instrument and its options.

Chapter 1 contains all information about putting into operation (unpacking, connection to

AC supply, switching on and off), functional testing and installation of the instrument, preset settings and views of the front and rear panel showing the controls and connectors needed for operation.

Chapter 2 presents a brief introduction and typical settings to users working with the

ABFS for the first time.

Chapter 3 describes manual control of the Baseband Fading Simulator, for example

calling up of menus, selection and editing of parameters, use of the list editor and the SAVE/RECALL function. This chapter also contains an overview of menus showing the functions available for the instruments and its options.

Chapter 4 describes the functions of the instrument and its options which can be

activated manually via menus or by remote control (fading, noise generation, Memory Sequence, HOP CONTROL and general functions not directly related to signal generation).

Chapter 5 provides basic information on remote control, for example on the IEC/IEEE

bus, RS-232-C interface, interface and device messages, command processing, status reporting system, etc.

Chapter 6 contains for each command system an overview and description of all com-

mands available for the instrument and its options as well as an alphabetical list of all commands.

Chapter 7 includes programming examples for remote control. Chapter 8 gives information on preventive maintenance, for example for keeping the

exterior clean, storage, etc.

Chapter 9 contains the SCPI-specific and device-specific error messages displayed by

the instrument.

Chapter 10 includes the index.

Service Manual Instrument for Baseband Fading Simulator ABFS

The service manual instrument for Baseband Fading Simulator ABFS provides information on the checking of rated characteristics, manual and electronic adjustment, repair (fault diagnosis, module replacement), and the fitting of options. Moreover, it includes documentation such as spare parts list, basic circuit diagram, block diagram, etc.

1114.8564.12 E E-1

ABFS Putting into Operation

1 Putting into Operation

This chapter contains all inform ation about putting int o operation (unp acking, connectio n to AC suppl y, switching on and off ), functional testing and installation of the instrument, pr eset settings and views of the front and rear panel showing the controls and connectors needed for operation.

General Instructions

Before putting the ABFS into operation, please make sure that

• the covers of the casing are put on and screwed,

• the ventilation openings are free,

• no signal voltage levels exceeding the permissible limits are applied at the inputs,

• the outputs of the instrument are not overloaded or connected incorrectly.

If these points are not observed, the instrument might be damaged.

Unpacking the Instrument

À Take the instrum ent out of the sh ipping box and c heck whether t he

items listed in the packing list and in the lists of accessories ar e all included.

À Remove the two protective caps from the front and rear of the

remove protective cabs

Should the instrument be damaged, immediately notif y the for war der wh o shi ppe d th e i ns tr ument to you and keep the box and packing material.

For further transport or shipment of the ABFS the original packing should also be used. It is recommended to keep at least the two protective caps for front and rear side in order to prevent damage to the controls and connectors.

ABFS and carefully check the instrument for damage.

Supply Voltage

The ABFS can be operat ed at a.c. s ystems from 90 to 132 V and 180 to 265 V at system frequencies from 47 to 440 Hz. The power supply socket is situate d at the rear of the instrument. T he instrument automatically sets its elf to th e voltage applied within th e permis sible volta ge ranges. It is not necess ary to set the instrument to a certain supply voltage.

How to Ensure EMC

In order to avoid electromagnetic interf erence, the instrument m ay only be operated when it is closed and with all shielding covers fitted. Only appropriate shielded signal and control cables may be used.

1114.8564.12 E-11.1

Putting into Operation ABFS

Switching On/Off the Instrument

Power switch at the rear of the instrument

Switch on/off: À Press power switch at the top (I) / bottom (0)

Power switch

Power supply socket

On/Off switch at the front of the instrument

Standby check LED

The power switch can remain switched on permanently. Switching off is only necessary when the instrument is to be completely disconnected from the mains.

Switch on: À Press switch.

The instrument is ready for operation.

Switch off: À Release switch.

The instrument assumes the S TANDBY mode .

Initial Status

Upon switching on, the instrument automatically assumes the status which was set when it was switched off. If the instrument need not to be operated from the initial status any further, a defin ed default status should be established by pressing the [PRESET] key prior to further settings.

Setting Contrast and Brightness of the Display

Brightness control Contrast contr ol

Contrast and brightness of the display can be set by means of the contrast and brightness controls situated below the display.

RAM With Battery Back-Up

The ABFS has a static read-write memory (CMOS-RAM) with battery back-up, in which 50 different complete settings of the instrument can be stored (cf. Chapter 3, section "Storing and Calling of Instrument Settings "). In addition, all d ata and/or lists the user enters him self, such as for list mode or memory sequence, are stored in the RAM. Further, all data of the calibrations running within the instrument in the ABFS are stored in the RAM (cf. Chapter 4, section "Calibration" and Service Manual Instrument).

A lithium battery with a service l ife of approx. 5 years serves t o suppl y the R AM with power. W hen the battery is discharged, the data stored wi ll be lost. Exchanging the battery is described in the Service Manual - Instrument.

1114.8564.12 E-11.2

ABFS Putting into Operation

Preset Setting

A defined setting status is achieved by pressing the [PRESET] key.

Preset Status:

Mode 1channel / 12pat h Fading switched off AWGN switched off Memory Sequence switched off Hop Control switched off Protection of calibration data Protection lock: unaltered Settings stored unaltered Data, lists etc. stored unaltered IEC-bus address unaltered Beeper unaltered

All parameters and c ircuit s tates , even th ose of op eratin g m odes which are not activat ed, ar e pres et b y means of Preset.

The presettings going beyond the above list can be seen from the menu representations as of Section 4 which each indicate the Preset setting status.

Functional Test

On switching on the instrument and per m anentl y during o peratio n, the ABF S carr ies out a self test. T he ROM contents as well as the battery of the non-volatile RAM are checked on switching on the instrument and the RAM contents with every calling the memory. The most important instrument functions are automatically monitored during operation.

If an error is detected, the m es sage "ER ROR" is d isplaye d in t he stat us line. For f urther i dentif ication of the error, press the [ERRO R] key. Thereupon a descript ion of the error/s is disp layed (cf. Chapter 9, section "Error Messages"). Return to the menu exited by pressing the [BACK] key.

If required, the self tests can be i nduced purpos efully. Furth er, internal t est points ca n be polled b y the user and the results be read out and displayed. Cf. Service Manual Instrument.

Mounting into a 19" Rack

Caution: Ensure free air inlet/outlet at the perforation of the side walls of the instrument in rack

mounting.

The ABFS can be mounted into a 19" rack by means of rack adapter ZZA-94 (stock no. 396.4905.00). The mounting instructions are attached to the adapter.

1114.8564.12 E-11.3

Front Panel ABFS

MADE IN GERMANY

dBµV

µV

dB(m)

1114.8506.02

ENTER

231

AWGN

0N/0FF

FADING

DATA INPUT

MODE

GRP A

MODE

GRP B

MENU / VARIATION

SELECT

RCL

SAVE

RETURN

LOCAL

HELP

STATU

ERROR

567

15.0

12.0

ILOSS B 1

ILOSS B 2

OPERATING

Move cursor

SELECT Next menu

ABFS

dBfs

-18.0

-22.0

NLEV A1

NLEV B2

RETURN Previous menu VERSI ON: 1.0

PRESET



MENU1 MENU2ASSIGN

QUICK SELECT

FADING SIMULATOR

15.0

ILOSS A1

12.0

ILOSS A2

FSIM B-2CH/2IN/2OUT AWGN A/B

MODE

GROUPA FSIM

AWGN

GROUPB FSIM

AWGN

CALIBRATE

MEM SEQ

HOP CONTROL

FSIM A-2CH/2IN/2OUT

UTILITIES

Fig. 1-1 Front panel view ABFS

1114.8564.12 E-11.4

HELP

ABFS Front Panel

Explanation of Front and Rear Panel

Elements of the Front Panel

1 Display

Cf. Chapter 3, section "Design of the Display".

2 DATA INPUT

Parameter field

MODE GRP A

MODE

GRP B

SAVE

RCL

As an alternative to menu control, the parameter keys can be used to switch over ABFS operating modes and signal paths. A graphic with the associated signal paths is displayed in the menu. Complete device settings may also be stored and called up.

MODE GRP A MODE GRP B

Toggle key to change the operating mode of GROUP A or GROUP B of ABFS. After pressing the key, a window is opened in which the set signal paths are displayed in a graphic. The window is independent of the current menu control and menu hierarchy. The graphic is identical with that in the MODE menu.

See as well Chapter 3,

Section "Use of [MODE GRP A and [MODE GRP B]"

]

Numeric input field

231

SAVE Opens the storing of the current instrument

setting. Memory selection is effected by entering a number (1 to 50) and is finished by means of the [ENTER] key.

RCL Opens the calling of an instrument setting

stored. Memory selection is effected by entering a number (1 to 50) and is finished by means of the [ENTER] key.

Numeric values, decimal point and minus sign can be entered by means of the digital keys.,

0...9 Enters the digit.

Enters the decimal point

-/← Enters the minus sign. Deletes the last input (digit, sign or decimal

point) - key [BACKSPACE].

Section "Storing and Calling of Instrument Settings"

See as well Chapter 3,

Section "Basic Operating Steps"

1114.8564.12 E-11.5

Front Panel ABFS

MADE IN GERMANY

dBµV

µV

dB(m)

1114.8506.02

ENTER

231

AWGN

0N/0FF

FADING

DATA INPUT

MODE

GRP A

MODE

GRP B

MENU / VARIATION

SELECT

RCL

SAVE

RETURN

LOCAL

HELP

STATU

ERROR

567

15.0

12.0

ILOSS B 1

ILOSS B 2

OPERATING

Move cursor

SELECT Next menu

ABFS

dBfs

-18.0

-22.0

NLEV A1

NLEV B2

RETURN Previous menu VERSI ON: 1.0

PRESET



MENU1 MENU2ASSIGN

QUICK SELECT

FADING SIMULATOR

15.0

ILOSS A1

12.0

ILOSS A2

FSIM B-2CH/2IN/2OUT AWGN A/B

MODE

GROUPA FSIM

AWGN

GROUPB FSIM

AWGN

CALIBRATE

MEM SEQ

HOP CONTROL

FSIM A-2CH/2IN/2OUT

UTILITIES

Fig. 1-1 Front panel view ABFS

1114.8564.12 E-11.6

HELP

ABFS Front Panel

2 DATA INPUT

Unit keys with enter function

ENTER

dBµV

µV

dB(m)

the multiplication factor for the respective basic unit. The basic units are displayed next to the input field while numbers are entered. In the case of level settings, the unit keys specify the unit.

G/n dBµV Selects giga/nano, with RF level

µµ

M/ k/m MV Selects kilo/milli, with level mV.

Enter dB(m) Terminates entries in the basic

In order to change to another le vel unit, simply press the unit key desired. Parameter LEVEL must be activated, e.g. by pressing the [LEVEL] key.

3 MENU/VARIATION

The unit keys terminate the input of values a nd specif y

dBµV, with LF level dBu.

V Selects mega/micro, with level

unit and value inputs without unit. Selects with level dBm Selects with level offset and level

step width dB.

See as well Chapter 3,

Section "Basic Operating Steps"

Section

"Change Unit of Level"

Menu keys

RETURN

SELECT

×Ø

The menu keys access the m enus and settings within the menus.

RETURN Returns the menu cursor to the next

higher menu level.

SELECT Acknowledges the choice marked

by the menu cursor

⇐

Moves the digit cursor to the left by one position in the marked value indication. Moves the menu cursor to the left by one position in a 1-out-of-n selection.

⇒ Moves the digit cursor to the right

by one position in the marked value indication.

Moves the menu cursor to the right by one position in a 1-out-of-n selection.

see as well Chapter 3

Section "Basic Operating Steps"

1114.8564.12 E-11.7

Front Panel ABFS

MADE IN GERMANY

dBµV

µV

dB(m)

1114.8506.02

ENTER

231

AWGN

0N/0FF

FADING

DATA INPUT

MODE

GRP A

MODE

GRP B

MENU / VARIATION

SELECT

RCL

SAVE

RETURN

LOCAL

HELP

STATU

ERROR

567

15.0

12.0

ILOSS B 1

ILOSS B 2

OPERATING

Move cursor

SELECT Next menu

ABFS

dBfs

-18.0

-22.0

NLEV A1

NLEV B2

RETURN Previous menu VERSI ON: 1.0

PRESET



MENU1 MENU2ASSIGN

QUICK SELECT

FADING SIMULATOR

15.0

ILOSS A1

12.0

ILOSS A2

FSIM B-2CH/2IN/2OUT AWGN A/B

MODE

GROUPA FSIM

AWGN

GROUPB FSIM

AWGN

CALIBRATE

MEM SEQ

HOP CONTROL

FSIM A-2CH/2IN/2OUT

UTILITIES

Fig. 1-1 Front panel view ABFS

1114.8564.12 E-11.8

HELP

ABFS Front Panel

3 MENU/VARIATION

Rotary knob

FADING

0N/0FF

AWGN 0N/0FF

The rotary knob moves the menu cursor over the positions of a menu level to choose f rom or varies the value of a parameter. T he variation is either ef fected in steps of one or in a s tep width that c an be specified at will.

FADING ON/OFF Switches all the fading simulators

on or off. AWGN ON/OFF Switches all the noise generators

on or off.

See as well Chapter 3 Section

"Basic Operating Steps" Chapter 2, Section

"Sample Setting for First Users"

See as well Chapter 3, Section "Use of [FADING ON/OFF] and [AWGN ON/OFF] Keys"

PRESET

ERROR

LOCALHELPSTATUS

PRESET Establishes a defined instrument

status.

ERROR* Indicates error and caution

messages.

STATUS* Indicates the instrument status. HELP* Indicates context-sensitive auxiliary

text.

LOCAL Switches the instrument from the

REMOTE mode (remote control) to

the LOCAL mode (manual control).

* Exit the menus using the [RETURN] key.

See as well Chapter 1, Section "Preset Settings"

Chapter 9, Section "Error Messages"

Chapter 4, Section "Status"

Section "The Help System"

Section "Remote Control"

1114.8564.12 E-11.9

Front Panel ABFS

MADE IN GERMANY

dBµV

µV

dB(m)

1114.8506.02

ENTER

231

AWGN

0N/0FF

FADING

DATA INPUT

MODE

GRP A

MODE

GRP B

MENU / VARIATION

SELECT

RCL

SAVE

RETURN

LOCAL

HELP

STATU

ERROR

567

15.0

12.0

ILOSS B 1

ILOSS B 2

OPERATING

Move cursor

SELECT Next menu

ABFS

dBfs

-18.0

-22.0

NLEV A1

NLEV B2

RETURN Previous menu VERSI ON: 1.0

PRESET



MENU1 MENU2ASSIGN

QUICK SELECT

FADING SIMULATOR

15.0

ILOSS A1

12.0

ILOSS A2

FSIM B-2CH/2IN/2OUT AWGN A/B

MODE

GROUPA FSIM

AWGN

GROUPB FSIM

AWGN

CALIBRATE

MEM SEQ

HOP CONTROL

FSIM A-2CH/2IN/2OUT

UTILITIES

Fig. 1-1 Front panel view ABFS

1114.8564.12 E-11.10

HELP

ABFS Front Panel

6 BRIGHTNESS / CONTRAST

Brightness and contrast of the display can be set using the rotary knobs.

7 QUICK SELECT

QUICK SELECT

A SSIG N MENU1 MENU2

The menu-quick-selection keys permit fast access to two menus selected.

ASSIGN Stores the current menu as menu1

MENU1 Activates menu1 stored. MENU2 Activates menu2 stored.

8 ON/OFF SWITCH

Contrast

Brightness

when the MENU1 key is pressed

afterwards or as menu2 when the

MENU2 key is pressed afterwards.

See as well Chapter 1, Section "Setting of Contrast and Brightness of the Display"

See as well Chapter 3,

Section "Basic Operating Steps"

The On/Off switch switches the instrument from the standby mode to the ready-for-operation status. Prerequisite: The power switch at the rear of the instrument must be switched on.

The LED is illuminated in the standby mode.

See as well Chapter 1, Section "Switching On/Off the Instrument"

Section "Elements of the Rear Panel, Power Switch"

1114.8564.12 E-11.11

Rear Panel ABFS

IN 2

TRIGGER

IN 1

OUT 1

123

GROUP A

IN 1

RS 232

BLANK OUT

OUT 2

IN 2

HOP CONTROL 1

HOP CONTR OL 2

OUT 1

GROUP B

IN 1

OUT 2

IN 2

IEEE 488

625

Fig. 1-2 Rear panel view ABFS

1114.8564.12 E-11.12

ABFS Rear Panel

Elements of the Rear Panel

1 GROUP A / GROUP B

IN 2

IN 1

IN 2

GROUP B

GROUP A

IN 1

2TRIGGER

IN 1

TRIGGER

IN 2

TRIGGER IN 1 Trigger Input

IN 2 Trigger Input

OUT 1

OUT 2

OUT 1

OUT 2

GROUP A

GROUP B Baseband inputs and

outputs. The active inputs

and outputs are displayed, depending on the selected operating mode and the options installed, in submenu MODE.

Input/output resistance: 50 Ω. Nominal voltage:

Us = 0.5 V Max. permissible overvoltage: ± 5 V

HOP CONTROL 1.

Level: TTL

HOP CONTROL 2.

Level: TTL

See as well Chapter 4,

Section

"HOP CONTROL“

3 BLANK OUT

BLANK OUT

BLANK OUT Output to blank out the frequency

4 POWER SWITCH

Power switch ON when pressed at the top ("I")

Power supply connector

change of fading generators during

HOP CONTROL.

Level: TTL

See as well Chapter 1, Section "Supply voltage"

Section "Switching On/Off the Instrument"

1114.8564.12 E-11.13

Rear Panel ABFS

IN 2

TRIGGER

IN 1

OUT 1

123

GROUP A

IN 1

RS 232

BLANK OUT

OUT 2

IN 2

HOP CONTROL 1

HOP CONTROL 2

OUT 1

GROUP B

IN 1

OUT 2

IN 2

IEEE 488

625

Fig. 1-2 Rear panel view ABFS

1114.8564.12 E-11.14

ABFS Rear Panel

5 HOP CONTROL 1 / HOP CONTROL 2

HOP CONTROL1

HOP CONTROL 1 HOP CONTROL 2 RS-232 HOP CONTROL inter faces.

HOP CONTROL2

6 RS 232

RS 232

RS 232 RS-232-C interface,

7 IEC / IEEE488

625

IEEE 488

Transmission of a list index for

selection of a HOP frequency for

HOP CONTROL 1 or 2.

In addition to trigger inputs

TRIGGER IN 1 / IN 2 a trigger can

also be activated as an option via

the DSR line (pin 6).

used for software update and remote control. The pin assignment corresponds to the pin assignment of a PC.

See as well Chapter 4,

Section "HOP CONTROL“

IEC 625/ IEC/IEEE bus (IEEE 488) IEEE 488 Remote-control interface

See as well Chapter 5,

Section "Interfaces"

1114.8564.12 E-11.15

ABFS Connection of ABFS

2 Brief Introduction

This chapter provides inf ormation on the connection of ABFS and gives a short introduction with s ample settings for first-time users. It thus allows a fast familiarization with the operation of the unit.

Connection of ABFS

ABFS is a fading simulator that utilizes the complex baseband signals I and Q. It does not compr ise any signal source. It is located between the IQ source and RF upc onverter in the baseband signal path (see Fig. 2-1).

ABFS

AMIQ

CONTRO LON

RUNNIN G

I/Q MODULATION GENERATOR AMIQ

I Q

1110.2003. 02

MADE IN GERMANY

RF Upconverter

cos( t)

RF OUT

sin( t)

RF-Frequency

Fig. 2-1 Connection of Fading Simulator ABFS

AMIQ from Rohde & Schwarz is for us e as an external source to generate m odulation signals required for I/Q modulation. T he generated s ignals ar e provided at the modulation outputs I and Q of AMIQ (f r ont panel). It is also possible to connect an IQ m odulation source to ABFS other than AMIQ. The m aximum r ated input voltages must however be observed (see chapter 1, "Elements of the Rear Panel").

1114.8564.12 E-12.1

Sample Settings for First-Time Users ABFS

Sample Settings for First-Time Users

Fading a GSM signal

"GSM TYPICAL URBAN 12 Path“ fading standard, RF carrier frequency = 904.5 MHz

First, the signal source (INPUT) and the upconverter (OUTPUT) are connected to ABFS. GROUP B connectors are available only if option ABFS-B2 (second fading group) has been fitted.

GROUP A

IN 1

OUT 1

INPUT

IN 2

OUT 2

OUTPUT

IN 1

IN 2

GROUP B

OUT 1

OUT 2

Fig. 2-2 Signal input/outputs on rear panel of ABFS

The fading mode can be set via the [MODE GRP A] toggle key. Press the [MODE GRP A] key until the 1CHANNEL 12 PATH mode is displayed for GROUP A, see Fig. 2-3).

Operating steps Explanations

PRESET

MODE GRP A

1114.8564.12 E-12.2

Reset unit to defined state.

Press key n-times until the FSIM A1CH/1IN/1OUT fading mode is displayed in the status line.

ABFS Sample Settings for First-Time Users

ILOSS A1

FSIM A-1CH/1IN/1OUT

MODE FSIM CALIBRATE MEM SEQ HOP CONTROL UTILITIES HELP

dB ILOSS A2

0.0

IQ_IN1

Fig. 2-3 Display for setting the fading mode

Setting the fading parameters

Operating steps Explanations

ME N U / VAR IAT I ON

MENU / VARIATION

GROUP A

FSIMA1

FSIMA2

0.0

IQ_OUT1

Select FSIM menu using the rollkey and press the SELECT key.

ME N U / VAR IAT I ON

FSIM

STANDARD

GSM TYPICAL URBAN 3

SELECT

MENU / VARIATION

SELECT

MENU / VARIATION

SELECT

The submenu is displayed.

Select STANDARD submenu and press the SELECT key.

A selection of different fading standards is displayed.

Select GSM TYPICAL URBAN 3 standard using the rollkey and press the SELECT key.

The display returns to the FSIM menu and the parameters for the standard are set.

1114.8564.12 E-12.3

Sample Settings for First-Time Users ABFS

Operating steps Explanations

ME N U / VAR IAT I ON

MENU / VARIATION

RF FREQUENCY

DATA INPUT

STATE

RUN

MENU / VARIATION

Select RF-FREQUENCY using the rollkey and press the SELECT key.

SELECT

Enter an RF carrier frequency of

904.5 MHz. The cursor returns to the

µV

MENU / VARIATION

FSIM menu.

Select STATE using the rollkey and press the SELECT key.

SELECT

The menu cursor marks the current 1-out-of-N selection.

MENU / VARIATION

SELECT

RETURN

Select RUN using the rollkey and press the SELECT key. The cursor jumps to RUN.

Press the RETURN key to again return to the FSIM menu.

1114.8564.12 E-12.4

ABFS Sample Settings for First-Time Users

ILOSS A1

FSIM A-1CH/1IN/1OUT

MODE FSIM CALIBRATE MEM SEQ HOP CONTROL UTILITIES HELP

12.4

ILOSS A2

STATE OFF RUN STOP RESET STANDARD... SPEED UNIT m/s km/h mph SHOW PATH 1..6 7..12 INSERTION LOSS SETTING MODE AUTO MAN

COUPLED PARAMETERS... SET DEFAULT RF FREQUENCY 904.500 000 0 MHz

CHANNEL1/PATH 1 2 3 4 5 6 STATE ON ON ON ON ON ON PROFILE RAYL RAYL RAYL RAYL RAYL RAYL DISCRETE COMP OFF OFF OFF OFF OFF OFF

SPEED 3.0 3.0 3.0 3.0 3.0 3.0 kmh DOPPLER FREQ 2.5 2.5 2.5 2.5 2.5 2.5 Hz PATH LOSS 4.0 3.0 0.0 2.6 3.0 5.0 dB DELAY 0.00 0.10 0.30 0.50 0.80 1.10 us CORR PATH NONE NONE NONE NONE NONE NONE COEFF 1.00 1.00 1.00 1.00 1.00 1.00 % PHASE 0 0 0 0 0 0 deg LOGNORM STATE OFF OFF OFF OFF OFF OFF LOCAL CONST 200 200 200 200 200 200 m STD DEV 0 0 0 0 0 0 dB

0.0

Fig. 2-4 Display for setting fading

1114.8564.12 E-12.5

ABFS Design of the Display

3 Manual Operation

This chapter shows the design of the dis pla y and d escr ibes t he m anual contr ol of the B aseba nd Fading Simulator, for example callin g up of menus, selection and editing of parameters, use of the list edit or and the SAVE/RECALL function. This chapter also contains an overview of menus showing the functions available for the instruments and its options.

It is useful to read the sample settings for first users in Chapter 2, "Short Tutorial".

Design of the Display

1 Header 2 Status line 3 Me nu fields

ILOSS A1

FSIM A-2C H/2IN/2 OUT AWGN A1

MODE MODE FSIM FSIM AWGN CALIBRATE MEM SEQ HOP CONTROL UTILITIES HELP

Main menu

dB NLEV A1

15.0

Submenu

Fig. 3-1 Design of the display

(1) Header

Depending on the operating mode set, the header indicates the different insertion losses for the individual channels (ILOSS = Insertion Loss). With options ABFS-B1/ABFS-B3 fitted, it also indicates the set noise level (NLEV = Noise Level).

(2) Status line

The status line below desc ribes o perat ing m ode and oper ating stat e of the instr um ent. Error messages and notes for caution are also displayed in the status line.

IQ_IN1

IQ_IN2

dBfs ILOSS A2

-21 .0

1CHANN EL/ 12 P ATH /1I NP UT / 1OU TP UT 2CHANNEL/ 6PATH/1INPUT/2OUTPUT

GROU

FSIMA1

FSIMA2

2CHANNEL/ 6PATH/2INPUT/1OUTPUT

2CHANNEL/ 6PATH/2INPUT/2OUTPUT

Setting menu

15.0

Menu curs or Digit cursor Select mark

(3) Menu fields

The indication fie lds be lo w th e header field are reserved for the menu r epres ent ations. The image contents of these fields change as a function of the menu selected. T he field at the left-hand displa y margin is occupie d with the m ain m enu, the topm ost leve l of the menu structure. The m ain menu is alwa ys faded in. Each further field adjacent at the right contains submenus.

The field ending with the right-hand display margin shows the setting menu. In this menu all setting values and setting states connected with the menu selected are indicated. When access ing submenus, the higher-ord er menus remain in th e display. The current menu path is evident through the select marks.

Menu cursor The menu cursor shows the user at which position in the m enu he is.

The position of the menu cursor is e vident from the inverse notat ion of the term (white characters on a black background).

Digit cursor As an underscore, the digit cursor marks the position which can be

varied by means of the rotary knob in a value indication.

Select mark The fram e ar ound a t erm marks current m enus or va lid settings in the

setting menu.

1114.8564.12 E-13.1

Basic Operating Steps ABFS

Basic Operating Steps

To operate the instrument, menus are called in the display. All setting possibilities and the current setting status are evident from the menus. All settings can be made by accessing the menus.

Besides the menus, the keys [MODE GRP A] and [MODE GRP B] may also be used for making settings on the signa l paths of GROU P A/B. Lik ewise, the fading simulators and the noise generators can be switched on and off not onl y via the menus but also by m eans of the keys [FADING ON/OFF] and [AWGN ON/OFF].

Calling the menus

Accessing the menus is effected using rotary knob [VARIATION], [SELECT] key and [RETURN] key.

Rotary knob

Rotary knob [VARIATION] moves the menu cursor over the positions of a menu level to be selected. If a scrollbar is v isible a t the l eft-hand m ar gin of a m enu, the m enu is lar ger t han the screen window. If the m enu c ur sor is moved to the margin of the s c reen window, the covered lines becom e visible.

[SELECT] key

The [SELECT] key acknowledges the selection marked by means of the menu cursor.

[RETURN] key

The [RETURN] key

- returns the m enu cursor to the next higher m enu l evel; th e m enu curs or is s hif ted to the left into the preceding column of the menu structure,

- closes the display pages called using keys [STATUS], [HELP] and [ERROR]

again.

Settings are accessed in the setting menus ending with the right-hand display margin.

ILOSS A1

FSIM A-2CH/2IN/2OUT AWGN A1

MODE FSIM AWGN CALIBRATE MEM SEQ HOP CONTROL UTILITIES HELP

dB NLEV A1

15.0

MODE OFF RUN STOP RESET STANDARD... SPEED UNIT m/s km/h mph SHOW PATH CHANNEL1 CHANNEL2 INSERTION LOSS SETTING MODE AUTO MANUAL INSERTION LOSS MANUAL 15.0 dB COUPLED PARAMETERS... SET DEFAULT RF FREQUENCY 100.000 000 0 Mhz CHANNEL1/PATH 1 2 3 4 5 6

dBfs ILO SS A2

-21.0

15.0

Fig. 3-2 Fading setting menu

1114.8564.12 E-13.2

ABFS Basic Operating Steps

Selection and Change of Parameters

Select parameter

Change setting value

Via value inputs

Using rotary knob

À Set t he menu cursor to t he name of the par ameter desired us ing the r otary

knob, e.g. to INSERTION LOSS MANUAL in the FSIM setting m enu, see Fig. 3-2.

À Via value input or by means of rotary knob.

À Press the first digit of the new value or minus sign.

The old value is deleted, the entry is indicated in the marked field.

À Enter further digits. À T erminate the input using a u nit key or, in the case of i nputs in t he bas e uni t

or in the case of inputs without unit, using the [1x/Enter] key. The menu cursor wraps back to the appropriate parameter.

À Press [SELECT] key.

The menu cursor changes from the parameter selected in the left-hand column of the setting menu to the setting value on the right, e.g. from INSERTION LOSS MANUAL to 15.0 dB, see Fig. 3-2.

À Set the underscore to the pos ition of the setting value to be varied using

keys [Ø] [×].

À Turn rotary knob.

The position underscored is varied in steps of 1.

1-out-of-n selection

Quick selection of a parameter

À Select parameter. À Press [SELECT] key.

The menu cursor changes from the parameter selected in the left-hand column of the setting menu to the curre nt selection on the right, e.g. from SPEED UNIT to km/h, see Fig. 3-2.

À Set the m enu cursor to the position desired with in the 1-out-of-n selection

using the rotary knob or cursor keys [⇐] [⇒].

À Press [SELECT] key.

The setting is made. T he select ion mark which has mar ked the setting va lid up to now wraps to the new position.

À Press the [RETURN] key.

The menu cursor wraps back to the respective parameter.

The quick selection of a parameter reduc es the number of operating steps if several parameters are set successivel y. The menu c ursor can d irectl y be set further from line to line in the column of the setting values by pressing the [SELECT] key.

The menu cursor wraps from the setting value of a parameter to the set ting value of the parameter in the next line.

The column of the setting values can be exited at each posit ion by pressing the [RETURN] key.

1114.8564.12 E-13.3

Basic Operating Steps ABFS

Triggering Action

Lines in the setting m enu whic h are m arked with th e " " symbol at the end of the lin e qual ify a n acti on which can be carried out. Instruction SET DEFAULT

sets the default values of the path parameters.

Triggering action

À Set the menu cursor to the respective instruction. À Press the [SELECT] key.

The action is triggered. While the action is carried out, the instruction remains framed by the selection mark.

Quick Selection of Menu (QUICK SELECT)

The keys [ASSIGN], [MENU1] and [MENU2] of the QUICK SELECT control field are used to call selected menus quickly by one keystroke.

Store menus

Call menus

À Establish the desired operating status of the current menu. À Press [ASSIGN] key. À Press [MENU1] or [MENU2] key.

The current menu is stored as menu1 or menu2. That is to say, 2 menus can be stored in total.

À Press [MENU1] or [MENU2] key.

Menu1 or menu2 stored is displayed. Exactly the operating status which was current at the point of time of storing is reconstructed.

Using Keys [MODE GRP A] and [MODE GRP B]

Besides the menus, the keys [MODE GRP A] and [MODE GRP B] may also be used for making settings on the signal paths of GROUP A/B.

Key [MODE GRP A]/ Key [MODE GRP B]

1114.8564.12 E-13.4

À Press key [MODE GRP A] or [MODE GRP B].

The various operating modes or signal paths of the group are selected successively.

After pressing the key, a windo w is opened in which the set ABFS signal paths are displayed in a graphic. T he window is ind ependent of the curr ent menu control and m enu hierarch y. The graphic is identic al with that in t he MODE menu. The window is cleared automatically after 10 seconds. If a key is pressed whil e the signal paths are being displayed, the window will be cleared and operation via menus continues.

ABFS Basic Operating Steps

Using Keys [FADING ON/OFF] and [AWGN ON/OFF]

FADING and NOISE (AWGN Additive White Gaussian Noise) can be switched on and off not only in the menus but also by means of the keys [FADING ON / OFF] and [AWGN ON / OFF].

Key [FADING ON/OFF]

Key [AWGN ON/OFF]

À Press key [FADING ON/OFF].

Switching all fad ing sim ulators on or off . If fading is switched of f, 0.0 d B will be indicated in the ILOSS displays.

À Press key [AWGN ON/OFF].

Switching all noise gener ato r s on or off .

Correction of Input

Digits can be corrected by one of the following keys before the input is confirmed by the [Enter] key:

Key [-/

Key [RETURN]

Key [MODE GRP A]/ Key [MODE GRP B]

]

The backspace key deletes the value entered digit by digit. When the last digit is deleted, the previous value is displayed.

Pressing the [RETURN] key deletes the entire entry and results in the previous value being indic ated again.

For a subsequent new input in th e sett ing m enu, t he dig it of the ne w value is to be entered.

If a selection is made by pressing the keys [MODE GRP A] or [MODE GRP B], a second press of the same key will delete the whole entry made.

1114.8564.12 E-13.5

List Editor ABFS

List Editor

The ABFS offers the facility of generating lists for automatic sequences of HOP mode and Memory Sequence. The lists consist of elements (pairs of values) which are defined by an index and at least one parameter per index . Eac h list is assi gned a s eparat e nam e a nd sel ect ed b y m eans of t his name. Access to the lists is made in the associated menus. For example, sequences of instrument settings can be accessed in the ME M SEQ m enu. However, the lists are alwa ys generated and proces sed in the sam e way and the procedures are hence explained in detail in this section by the example of the Memory Sequence (Menu MEM SEQ).

Setting menus providing list processing are structured in two pages: The first page, called OPERAT ION page in t he following contai ns the gen eral conf iguration p aram eters

for processing a list. F urther, t he gener al list f unctions s uch as s electing an d delet ing the lis t as well as calling an editing mode are provided. The second page, the EDIT page, is automatically displayed when calling an edit function and serves to enter and modify the parameters of the list.

The OPERATION page has a similar arrangem ent with all l ist edit ors . As an ex am ple, the O PER AT ION page of the MEM SEQ menu is shown:

Menu selection:MEM SEQ

ILOSS A1

FSIM A-2CH/2IN/2OUT

MODE FSIM AWGN CALIBRATE MEM SEQ HOP CONTROL UTILITIES HELP

dB ILOSS A2

0.0

MODE OFF AUTO SINGLE STEP EXT_SINGLE EXT_STEP

RESET SEQUENCE

CURRENT INDEX 1

SELECT LIST... CURRENT LIST: MSEQ2

DELETE LIST... FUNCTION FILL INSERT DELETE EDIT/VIEW

0.0

Fig. 3-3 OPERATION page of the MEM SEQ menu

The settings for MODE, CURRENT INDEX, etc. are irrelevant for the general description of the list editors and are described in Section "Memory Sequence".

The last three m enu lines of the OPERATION page alwa ys exist and are reser ved for selecting and deleting lists as well as for calling the edit functions (and hence the EDIT page).

1114.8564.12 E-13.6

ABFS List Editor

SELECT LIST

DELETE LIST FUNCTION

Opens a selection window in which a lis t c an be s elec t ed f r om the existing lists or a new, empty list can be generated. In this line the active list is always displayed.

Opens a selection window in which the list to be deleted can be selected. Selection of the edit function for processing the lists. The EDIT page is

automatically called through the selection. FILL Filling a list with elements. INSERT Insertion of elements into a list. DELETE Deletion of elements of a list. EDIT/VIEW Editing the single elements.

Select and Generate - SELECT LIST

SELECT LIST opens a selection window in which either an existing list can be selected or a new, empty list can be generated. By pressing the [R ETURN] k ey, the selection win dow is closed without changing the setting.

Select list

À Mark the list desired using the rotary knob.

Generate list

No modification of the setting

À Press [SELECT] key.

The selected list is inc luded in the instr ument setting. T he selection win dow is closed. The selected list is displayed under CURRENT.

À Mark CREATE NEW LIST À Press [SELECT] key.

A new empty list is automatically generated which can be filled using functions FILL or EDIT. The selection window is closed. The new list is displayed under CURRENT.

À Press [RETURN] key.

using rotary knob.

1114.8564.12 E-13.7

List Editor ABFS

Selection: SELECT LIST

ILOSS A1

FSIM A-2CH/2IN/2OUT

MODE FSIM AWGN CALIBRATE MEM SEQ HOP CONTROL UTILITIES HELP

dB ILOSS A2

0.0

MODE OFF AUTO SINGLE CREATE NEW LIST MSEQ1 9 RESET SEQUENCE MSEQ3 1 CURRENT INDEX MSEQ4 23

SELECT LIST... DELETE LIST... FUNCTION FILL INSERT DE

Fig. 3-4 SELECT-LIST selection window

CREATE NEW LIST

Generating a new lis t. The name of the list cannot be selected freely in the case of manual co ntrol. A definite list name is autom atically generat ed in the following form:

MSEQ<n>, with <n> ∈ {0..9}, e.g. MSEQ1 (with Memory Sequence) In the case of HOP CTRL mode, HOP1 or HOP2 wou ld be gener ated. If a lis t

is created via IEC bus, an arbitrary list name can be given (cf. Section 5). Unrestricted access is also possible by means of the selection window.

0.0

MSEQ2 100

The list currently set is marked in the selection window by means of the selection mark, here MSEQ2. In add ition to the list n am e, the leng th of th e list is given, here 100 elements.

1114.8564.12 E-13.8

ABFS List Editor

Deletion of Lists - DELETE LIST

DELETE LIST opens a s election window in which the list to be del eted can be selected. The lists are represented together with their name and their length. By pressing the [RETURN] key the selection window is exited without deleting a list.

Delete list

À Mark desired list using the rotary knob. À Press [SELECT] key.

À Press [SELECT] key.

Selection: DELETE LIST

ILOSS A1

FSIM A-2CH/2IN/2OUT

MODE FSIM AWGN CALIBRATE MEM SEQ HOP CONTROL UTILITIES HELP

dB ILOSS A2

0.0

MODE OFF AUTO SINGLE MSEQ1 9 MSEQ2 100 RESET SEQUENCE MSEQ4 23 CURRENT INDEX

SELECT LIST... DELETE LIST... FUNCTION FILL INSERT DE

The prompt "enter [SELECT] to delete list/sequence?" is displayed

The list is deleted. If the prompt is acknowledg ed with the [RETURN] key, however, the list is not deleted. The selection window is automatically closed due to the acknowledgment of the prompt.

0.0

MSEQ3 1

Fig. 3-5 DELETE-LIST selection window

1114.8564.12 E-13.9

List Editor ABFS

Edition of Lists

Due to the selection of an edit mode on the OPERATION page the EDIT page is automatically activated. When the EDIT/VIEW function is s elected, the larges t possib le section of the lis t is disp layed (cf. Fig. 3-6). In the cas e of block func tions FILL , INSERT an d DELET E, an input wind ow is addit ion ally displayed (cf. Fig. 3-7 to Fig. 3-9).

Functions SELECT LIST and FUNCTION are available on the EDIT page as on the OPERATION page. Return to the OPERATION page is effected by pressing the [SELECT] key twice.

Single-value function EDIT/VIEW

By selecting the EDIT/VIEW function, the e ntire list can b e viewed or m odifications of s ingle values be carried out.

If the cursor mark s a value in the INDEX colum n of the list, the EDIT mode is exited by pressing the [RETURN] key. The menu cursor then marks FUNCTION again.

There is no separate function for storing the list. This means that every modification of the list is transferred to the internal data set and has an effect on exiting the EDIT/VIEW function.

Selection: FUNCTION EDIT/VIEW

ILOSS A1

FSIM A-1CH/1IN/1OUT

MODE FSIM AWGN CALIBRATE MEM SEQ HOP CONTROL UTILITIES HELP

dB ILOSS A2

0.0

SELECT LIST... CURRENT: MSEQ2 FUNCTION FILL INSERT DELETE EDIT/VIEW

-INDEX FREE 0232 LEN 0024 MEMORY DWELL

0001 09 50 ms

0002 02 50 ms 0003 01 60 ms 0004 23 75 ms 0005 09 90 ms 0006 10 90 ms 0007 08 50 ms 0008 11 65 ms

Fig. 3-6 Edit function EDIT/VIEW

INDEX

Position in the list.

0.0

FREE

Space available. FRE E 0232 m eans that sp ace f or 232 parameter elem ents is available in the list memory in total.

LEN

Occupied space. LEN 002 4 means that the curren t list occupies 24 elem ents in the list memory.

MEMORY DWELL

Identification of the column below. The number and name of parameter columns is different for the various list editors.

1114.8564.12 E-13.10

ABFS List Editor

Select parameter

À Mark the index assoc iated to th e param eter using the r otar y knob or d irect ly

enter the value of the index via the numeric keys.

À Press [SELECT] key.

Parameter MEMORY is m arked. If the second parameter DW ELL is to be marked, press the [SELECT] key again.

Modify parameter

À Var y the value of the parameter selected us ing the r otary knob or enter the

value directly using numeric keys.

À Press the [ENTER] key or unit keys.

The value is inc luded in the data set. T he menu cursor marks the va lue of the next column. In the last column, the menu cursor then marks the next line of column MEMORY.

À Press the [RETURN] key.

The menu cursor wraps back to the INDEX column. The EDIT mode is exited by repeatedly pressing the [RETURN] key (cf. Chapter 2, Section "Sample Settings for First Time Users").

Block function FILL

Using function FILL, a parameter, e.g. MEMORY, is overwritten with constant or linearly increasing/decreasing values within a defined range. The input window is exited by pressing the [RETURN] key without a modification being carried out. If the filler range exceeds the end of the list, the list is automatically extended.

The list entry, in the example for MEMORY, with index [AT +n] is calculated as follows from the information AT, RANGE, starting value (MEMORY) and WITH INCREMENT:

MEMORY[AT+n] = starting value (MEMORY)+ n · increment | (0 ≤ n ≤ RANGE1)

Selection: FUNCTION FILL

ILOSS A1

FSIM A-2CH/2IN/2OUT

MODE FSIM AWGN CALIBRATE MEM SEQ HOP CONTROL UTILITIES HELP

dB ILOSS A2

0.0

SELECT LIST... FILL AT 10 RANGE 1 FUNCTION PARAMETER MEMORY DWELL

-INDEX - FREE 0232 0001 MEMORY 1 0002 WITH INCREMENT 0 0003 0004 0005 0006 0007 0008 EXECUTE

0.0

Fig. 3-7 Edit function FILL: input window

1114.8564.12 E-13.11

List Editor ABFS

FILL AT

PARAMETER

MEMORY oder DWELL

WITH INCREMENT

EXECUTE

Filling a list After selection of function FILL, the menu cursor marks FILL AT.

Setting the filling range. AT Lower limit (index) RANGE Number of the elements to be inserted

Selection on whic h of the parameters the f illing function is to have an effect. This menu option is eliminated if the list only includes elements with one parameter.

Input of the starting value for the parameter selected. This option is only displayed if a selection has been made under PARAMETER MEMORY or DWELL.

Input of the increment between two successive values. If 0 is entered as increment, a filling proce dure with constant values is achie ved. This option is only displayed if a selection has bee n m ade under PARAM ET ER MEMOR Y or DWELL.

Starts the filling sequence. After the function has been executed, the input window is automatically exited. The current index points to the f irst element after the processed range.

À Press the [SELECT] key.

The menu cursor marks the value at AT.

À Var y index value using the rotar y knob or enter using the num eric ke ys and

the [ENTER] key.

À Press the [SELECT] key.

The menu cursor marks the value at RANGE.

À Var y value using the rotary knob or enter using t he numeric keys and the

[ENTER] key.

À Press the [SELECT] key.

The menu cursor marks MEMORY or DWELL in input line PARAMETER.

À Select MEMORY using the rotary knob (if not yet marked) and press the

[SELECT] key. The menu cursor marks the value in input line MEMORY.

À Vary starting value for column MEMORY using the rotary knob or enter

using the numeric keys and the [ENTER] key.

À Press the [SELECT] key.

The menu cursor marks the value in input line WITH INCREMENT.

À Var y the valu e of the increm ent des ired us ing the r otar y knob or enter using

the numeric keys and the [ENTER] key.

À Press the [RETURN] key. À Mark the action EXECUTE À Press the [SELECT] key.

The filling seq uence is init iated. Af ter the function has been carried out, the input window is automaticall y exited. The menu cursor m arks FUNCTION. The EDIT page shows the end of the range that has been filled right now.

1114.8564.12 E-13.12

ABFS List Editor

Block function INSERT

Function INSERT inserts the desired number of elements with constant or linearly increasing/de-creas ing values b efore the el ement with the given starti ng index. All elements which had been stored from the starting index are shifted to the end of the range to be inserted.

Input is effected analogously to filling a list. By pressing the [RETURN] key the input windo w is exited without a modification being eff ected. The

menu cursor then marks FUNCTION. The list entry, in the example for MEMORY, with index [AT +n] is calculated as follows from the

information AT, RANGE, starting value (MEMORY) and WITH INCREMENT:

MEMORY[AT+n] = starting value (MEMORY) + n · Increment | (0 ≤ n ≤ RANGE-1) Selection: FUNCTION INSERT

ILOSS A1

FSIM A-2CH/2IN/2OUT

MODE FSIM AWGN CALIBRATE MEM SEQ HOP CONTROL UTILITIES HELP

dB ILOSS A2

0.0

SELECT LIST... INSERT AT 10 RANGE 2 FUNCTION

-INDEX - FREE 0232 0001 MEMORY 1 0002 WITH INCREMENT 0 0003 DWELL 100ms 0004 WITH INCREMENT 0.0ms 0005 0006 0007 0008 EXECUTE

Fig. 3-8 Edit function INSERT: input window

INSERT AT

Input of the starting index and the number of the elements to be inserted. AT Starting index before which the insert operation is to be effective. RANGE Number of the elements to be inserted.

MEMORY

Input of the starting value for MEMORY.

0.0

DWELL WITH INCREMENT

Input of the starting value for DWELL. Input of the increment between two successive values for MEMORY or

DWELL. If 0 is indicated as increment, constant values are achieved to be inserted RANGE times.

EXECUTE

Starts the inserting seq uence. After the f unction has bee n executed, the in put window is automatically exited. The menu cursor marks FUNCTION. The EDIT page shows the beginning of the range that has moved forward.

1114.8564.12 E-13.13

List Editor ABFS

Block function DELETE

Function DELETE deletes the elem ents of the ran ge indic ated. T his does no t leave a ga p in the l ist but the remaining elements m ove forward. If the given range ex ceeds the end of the list, deletion unt il the end of the list is effected.

Input is analog to filling a list. By pressing the [RETURN] key, the input window is exited without a m odification being carrie d out. T he

menu cursor then marks FUNCTION. Selection: FUNCTION DELETE

ILOSS A1

FSIM A-2CH/2IN/2OUT

MODE FSIM AWGN CALIBRATE MEM SEQ HOP CONTROL UTILITIES HELP

dB ILOSS A2

0.0

SELECT LIST... DELETE AT 10 RANGE 2 FUNCTION

-INDEX - FREE 0232 EXECUTE 0001 0002 0003 0004 0005 0006 0007 0008

Fig. 3-9 Edit function DELETE: input window

DELETE AT

Input of the block of the list to be deleted AT Lower limit (INDEX) RANGE Number of elements to be deleted.

0.0

EXECUTE

Starts the deletion. After the function has been executed, the input window is automatically exited. The menu cursor marks FUNCTION. The EDIT page shows the beginning of the range that has moved forward.

1114.8564.12 E-13.14

ABFS SAVE/RECALL – Storing/Calling of Instrument Settings

SAVE/RECALL – Storing/Calling of Instrument Settings

50 complete instrument settings can be stored in memory locations 1 to 50.

Operating Steps Explanations

SAVE

RCL

DATA INPUT

ENTER

Store current instrument setting in memory location 12.

Call instrument setting of memory location 12.

The digital display during a save or recall entry is faded in a window. Memory location 0 has a special function. Here the instrument setting which was current prior to the last

memory recall and prior to a preset setting is automatically stored. This permits the resetting of instrument settings which have inadvertently been deleted using Recall 0.

Store IEC-bus command: "*SAV 12"

Call IEC-bus command: "*RCL 12"

1114.8564.12 E-13.15

Menu Summary ABFS

Menu Summary

MODE

GROUPA FSIM

FSIM

GROUPB FSIM

with OPTION ABFS-B2

AWGN

CALIBRATE

MEM SEQ

HOP CONTROL

UTILITIES

OPTION ABFS-B1, ABFS-B3

SYSTEM PROTECT DIAG TEST TRIGGER BEEPER

GPIB

RS232 LANGUAGE

CONFIG

TPOINT PARAM

HELP

1114.8564.12 E-13.16

ABFS Fading Modes

4 Device Functions

The present chapter describes the functions and options of the unit. The functions can be called up manually via menus or via remote control and include fading, noise generation, HOP-CONTROL, memory sequence and general functions that are not directly related to signal generation. The subdivision of this chapter is according to the ABFS operating menu.

Fading Modes

Basic Units With 12 Paths

The different op erating modes or signal paths of the fading chan nels can either be set directly via the MODE GRP A key or via the MODE menu. Fig. 4-1 shows the s e lection of operating modes i n t he MO D E submenu of ABFS in its basic model configuration (without options ABFS-B1 / ABFS-B2 / ABFS-B3).

ILOSS A1

FSIM A-2CH/2I N/2OUT

MODE FSIM CALIBRATE MEM SEQ HOP CONTROL UTILITIES HELP

Fig. 4-1 Selection of operating modes in MODE submenu In its basic configuration, ABFS comprises two fading modules that form a group of 12 fading channels.

The channels can be combined to form the following operating modes:

1CHANNEL/12PATH/ 1INPUT/1OUTPUT

2CHANNEL/6PATH/ 2INPUT/1OUTPUT

dB ILO SS A2

0.0

MODE FSIM 1CHANNEL/12PATH/1INPUT/1OUTPUT

GROUP A

IQ_IN1

IQ_IN2

One fading channel with 12 paths. IEC/IEEE-bus command :SOUR:FSIM:CONF SISO

Two fading channels with 6 paths each and a common output. IEC/IEEE-bus command :SOUR:FSIM:CONF DISO

Note: If option B49 is installed, this setting is not possible for the Moving

Delay and Birth-Death operating modes !

FSIMA1

FSIMA2

2CHANNEL/ 6PATH/2INPUT/1OUTPUT 2CHANNEL/ 6PATH/1INPUT/1OUTPUT 2CHANNEL/ 6PATH/2INPUT/2OUTPUT

IQ_OUT1

IQ_OUT2

0.0

2CHANNEL/6PATH/ 1INPUT/2OUTPUT

1114.8564.12 E-2

Two fading channels with 6 paths each and a common input. IEC/IEEE-bus command :SOUR:FSIM:CONF SIDO

Note: If option B49 is installed, this setting is not possible for the Moving

Delay and Birth-Death operating modes !

4.1

Fading Modes ABFS

2CHANNEL/6PATH/ 2INPUT/2OUTPUT

Two fading channels with 6 paths each and a separate input and output per channel.

IEC/IEEE-bus command :SOUR:FSIM:CONF DIDO

Note: If option B49 is installed, this setting is not possible for the Moving

Delay and Birth-Death operating modes !

When switching between the oper ating modes using the MODE GRP A key or the MODE m enu, the different operating m odes and their signal pat hs as well as their assi gnments to the respectiv e inputs and outputs are displayed graphically. The operating mode is indicated in the status line. See Fig. 4-2.

Menu selection:MODE for basic unit

ILOSS A1

FSIM A-2CH/2IN/2OUT

MODE FSIM CALIBRATE MEM SEQ HOP CONTROL UTILITIES HELP

dB ILO SS A2

0.0

MODE FSIM 2CHANNEL/ 6PATH/2INPUT/2OUTPUT

GROUP A

IQ_IN1

FSIMA1

IQ_OUT1

0.0

IQ_IN2

FSIMA2

Fig. 4-2 Display of signal paths in the MODE submenu

IQ_OUT2

1114.8564.12 E-2

4.2

ABFS Fading Modes

Fading With Option ABFS-B2

With option ABFS-B2 f itted, an other group c om prising 12 transm is sion paths is a vailab le. Two s epar ate groups (GROUP A and GROUP B) with 12 paths each are obtained but the individual paths of one group cannot be correlated with the paths of the other group (see correlation between paths). The operating modes or signal p aths of a group are equivale nt to the settings of the b asic group and can either be set directly via the MODE GRP A and MODE GRP B k eys or via the operating menu under MODE. The inputs and outputs are aga in sh own g raphic all y. Fig. 4-3 s ho ws the MODE s ubm enu of ABFS with bui lt-in opt io n A BF S-B 2. The INSERTION LOSS f o r G RO UP A is indicated on the lef t an d the insertion loss for GROUP B on the right of the display.

Notes on IEC/IEEE-bus commands: If a second fading group is available d ue to the presenc e of option ABFS-

B2, all IEC/IEEE-bus com mands relati ng to G ROU P A and GRO UP B only differ from each other by an identifier following the FS IMulator command, eg operating mode setting :

GROUP A FSIM: :SOURce:FSIMulator[1]:CONFigure GROUP B FSIM: :SOURce:FSIMulator2:CONFigure

Menu selection:MODE with option ABFS-B2

ILOSS A1 0.0 dB ILOSS A2 0.0 dB

FSIM A-2CH/2IN/2OUT FSIM B-1CH/1IN/1OUT

MODE GROUPA FSIM GROUPB FSIM CALIBRATE MEM SEQ HOP CONTROL UTILITIES HELP

MODE FSIM GROUP A 2CHANNEL/ 6PATH/2INPUT/2OUTPUT

MODE FSIM GROUP B 1CHANNEL/12PATH/1INPUT/1OUTPUT

GROUP A

IQ_IN1 IQ_OUT1

IQ_IN2

FSIMA1

FSIMA2

IQ_OUT2

ILOSS B1

GROUP B

IQ_IN1 IQ_OUT1

FSIMB1

FSIMB2

0.0

Fig. 4-3 MODE submenu with built-in option ABFS-B2

Fading Setting Parameters - Correlation Between Paths

The fading processes of different p aths are norm ally independent of each other as far as statistics are concerned. However, it is possible to set a correlation of paths 1 to 6 toget her with paths 7 to 12 in pairs. Setting a correlation calls for synchronous signal processing so the user has to observe the following restrictions:

• Correlat ion is al ways rec iproc al, ie if path 1 is cor rela ted with 7, path 7 is also c orrela ted with pa th 1 (CORR PATH).

• The following parameters of the two paths have to correspond with each other:

- Fading profile PROFILE

- Doppler parameter SPEED or DOPPLER FREQ

1114.8564.12 E-2

4.3

Fading Modes ABFS

- Magnitude of correlation coefficient COEFF

• The following equation applies to the phase of the c orrelation coefficient (PHASE) and thus to the phase shift between the correlated paths:

= 360° - ϕ

• The parameters for lognormal fading have to correspond with each other for correlated paths.

All these requirem ents nec ess ary for the par am eters due to t he above r estrict ions are autom atic all y set by ABFS.

Important: Once all the p aram eters are s et signal pr ocessing m ust be s ynchronized by RESET and a

subsequent RUN.

FSIM menu with option B49 If option B49 is installed, 4 fading modes are available. These can be reached via the following selection menu:

Fig. 4-4 FSIM selection menu with option B49 (option ABFS-B2 not installed)

FSIM

Choice of operating modes for the fading simulator. STANDARD FAD "Normal" operating mode with 12 paths, 50 ns time

resolution.

FINE DELAY Operating mode with fin er time resolution. Four paths are

GROUP A FSIM (with option ABFS-B)

possible. The system bandwidth of these paths is restricted to 4.6 MHz; this is sufficient for 3GPP with

3.84 Msymb/s. The time resolution is 1 ns.

MOVING DELAY Operating mode with 2 paths, one of which has a fixed

delay and the other has a sinusoid ally chang ing delay. Th is is in line with 3GPP test case 25.104-320, Annex B3.

BIRTH-DEATH Operating mode with 2 paths, whose delays can be randomly

modified within a ti me period .

Note: The operating m od es FI NE DELAY, MOVI NG D E LA Y and BI RTH-

DEATH are only possible for Group A and only if the software option ABFS-B49 is installed.

1114.8564.12 E-2

4.4

ABFS Fading Modes

FSIM Menu (without option B49) /STANDARD FAD Menu (with option B49)

If the option B49 is not available, the menu for setting he the fading parameters can be activated directly from the FSIM menu (basic configuration) or from the GROUP A FSIM and GR OUP B FSIM menus (with option ABFS-B2 installed).

This menu is the same as the STANDARD FADING menu of option B49.

Fig. 4-5 FSIM menu (without ABFS-B49 and without ABFS-B2) / STANDARD FAD menu (with

ABFS-B49)

STATE

RESET

1114.8564.12 E-2

Activates the fading simulation by starting (RUN) the fading process. The fading process is stopped by selecting STOP.

After RESET the pseudo-noise generator used to generate the fading process in a defined initial state can be started by RUN.

IEC/IEEE-bus commands :SOUR:FSIM:STAT ON

:SOUR:FSIM:SEQ RUN

Resets the pseudo-no ise generator. Parameter STATE is automaticall y set to STOP after RESET . RESET also allows f or a synchronization of the two fading options in two-channel mode with correlation switched on.

IEC/IEEE-bus command :SOUR:FSIM:SEQ:RES

4.5

Fading Modes ABFS

IGNORE RF

CHANGES < 5%

STANDARD

SPEED UNIT

SHOW PATH

INSERTION LOSS SETTING MODE

When enabled, frequency changes less than 5 % are ignored. That permits RF hopping faster than 3 ms.

IEC/IEEE-bus command :SOUR:FSIM:IGN:RFCH ON

Opens a window for s electing a defined sett ing of fading paths The setting parameters correspond to the test regulations as stipulated in the mobile radio standards (eg GSM, CDMA, N ADC). For standards TET RA TYPICAL URBAN and TETRA HILLY TERRAIN all six paths instead of the two are used with this parameter. With the same output signal applied, this yields a better residual carrier.

IEC/IEEE-bus command :SOUR:FSIM:STAN CDMA100

Selection of the unit required for the speed of parameter SPEED. IEC/IEEE-bus command :SOUR:FSIM:SPE:UNIT KMPH

Switchover between the indication of individual paths of a group. In case of 12-paths f ading, switchover is bet ween paths 1 to 6 and 7 to 12 and for 6-paths m odes (2 chan nels) switc hover is bet ween CHA NNEL 1 and CHANNEL 2.

Selection of a setting mode for the insertion loss of the fading simulator. AUTO The insertion loss is set autom atical ly and th e value is shown in the

display. Calculation is done under the following assumption:

- full-scale signal at input

- typical crest factor of modulated signal Note: signal clipping is possible.

MAN The insertion loss can be set under INSERTION LOSS MANUAL.

Note: strong signal clipping is possible.

IEC/IEEE-bus command :SOUR:FSIM:ILOS:SETT AUTO

INSERTION LOSS MANUAL

COUPLED PARAMETERS

SET DEFAULT

Setting of insertion loss for selected channel. IEC/IEEE-bus command :SOUR:FSIM:CHAN:ILOS:MAN 10.0dB

Opens a window to cou ple diff erent parameter s for all pat hs of a channe l to facilitate operation . If a coup li ng is sw itch ed on, the current v alu e of pat h 1 is assigned to all paths. The following parameters can be coupled:

- SPEED SETTING

- CORR COEFF SETTING

- LOCAL CONST SETTING

- STD DEV SETTING

IEC/IEEE-bus command :SOUR:FSIM:COUP:SPE

:SOUR:FSIM:COUP:CORR:COEF :SOUR:FSIM:COUP:LOGN:LCON :SOUR:FSIM:COUP:LOGN:CSTD

Sets the default sett ing of the path p arameters with path 1 switched on and all other paths switched off.

IEC/IEEE-bus command :SOUR:FSIM:DEF

1114.8564.12 E-2

4.6

ABFS Fading Modes

RF FREQUENCY

CHANNEL 1/ PATH CHANNEL 2/ PATH

STATE

PROFILE

Sets the RF frequency for selected channel. IEC/IEEE-bus command :SOUR:FSIM:CHAN1:RF 100MHz

Indicates the paths for subsequent param eters. These parameters can be set individually for each path.

Switch-on/off of a path. If the curs or is placed o nto a path, t his path m ay be switched on or off by pressing one of the unit keys (toggle function).

IEC/IEEE-bus command :SOUR:FSIM:PATH1:STAT ON

Selection of a fading profile. pDOPP (Pure DOPpler) Simulation of a transmiss ion path having a single

direct connection from the transmitter to the moving receiver (discrete component). The Do ppler frequency shift is determ ined by the parameters DOPPLER FREQ and FREQ RATIO.

IEC/IEEE-bus command :SOUR:FSIM:PATH7:PROF PDOP

RAYL (RAYLeigh) Simulation of a radio traffic area in which many

strongly scattered partia l waves are incident on a m oving recei ver. The resulting receiver amplitude is time-varying. The probability density of the magnitude of the receiver am plitude is indicated b y a Rayleigh distributi on. The f ading s pec trum is a class ical D opp ler spectrum.

IEC/IEEE-bus command :SOUR:FSIM:PATH6:PROF RAYL

DISCRETE COMP

POWER RATIO

RICE Simulation of a radio traffic area in which one strong direct wave

(discrete com ponent) is inc ident on a m oving r ecei ver in a dditi on to many scattered partial waves. The probability density of the magnitude of the receiver amplitude is indicated by a Rayleigh distribution. The fading spectrum of an unmodulated signal is the classical Doppler spectrum overlapped with a discrete spectral line.

IEC/IEEE-bus command :SOUR:FSIM:PATH4:PROF RICE

CPHAS A radio traffic ar ea without direct and random waves is generated

for this fading type (no discrete and no static component). The path is multiplied by a constant "pointer“ according to the path-specific parameter.

IEC/IEEE-bus command :SOUR:FSIM:PATH3:PROF CPH

Indication whether discrete component is switched on or off. IEC/IEEE-bus command :SOUR:FSIM:PATH4:DCOM:STAT ON

Entry value of power ratio between discrete component and distributed component with RICE f adi ng s w itche d on . If the POWER RATIO is modified, the sum power made up of the two components remains constant.

IEC/IEEE-bus command :SOUR:FSIM:PATH6:PRAT 3

1114.8564.12 E-2

4.7

Fading Modes ABFS

FREQ RATIO

Entry value of ratio of actual Doppler frequency shift to the Doppler frequency set with RIC E or pDOPP fading s witched on. The actua l Doppler frequency shift dep ends on the simulate d angle of incidenc e of the discrete component.

IEC/IEEE-bus command :SOUR:FSIM:PATH6:FRAT 1

/ deg 0 90 180

FREQ RATIO -1 0 +1

Fig. 4-6 Doppler frequency shift with moving receiver

CONST PHASE

SPEED

DOPPLER FREQ

Entry value of CONST PHASE with CPHAS fading switched on. The corresponding path is mu ltip lied by this phase.

IEC/IEEE-bus command :SOUR:FSIM:PATH6:CPH 20.0

Entry value of the spee d v of the m oving r eceiver. T he Doppl er fr equenc y f (DOPPLER FREQ) is calculated from the speed and the frequency of the RF output signal f parameter is automatically adjusted.

Setting range: v

vkmh

max

IEC/IEEE-bus command :SOUR:FSIM:PATH1:SPE 100

Entry value of the magnitude of the maximum Doppler freque ncy shift (see FREQ RATIO).

On changing the Doppler frequency f automatically

. On changing the SP EED param eter, the DOPP LER FR EQ

min

max

⋅003 10

⋅479 10

/≤ 99999

, the SPEED parameter is

adjusted.

With

cms=⋅2998 10

IEC/IEEE-bus command :SOUR:FSIM:PATH2:FDOP 92.3

1114.8564.12 E-2

it is

4.8

vcf

ABFS Fading Modes

PATH LOSS

DELAY

CORR PATH

COEFF

PHASE

LOGNORM STATE

Entry value of attenuation in path. IEC/IEEE-bus command :SOUR:FSIM:PATH3:LOSS 3

Entry value of signal delay in path. IEC/IEEE-bus command :SOUR:FSIM:PATH3:DEL 14.5

Switch-on or off (NONE) of a correlation with the selected path. The correlation of paths 1 to 6 with paths 7 to 12 can only be set in pairs. If option ABFS-B2 is fitted, correlation of paths is only possible within a group.

IEC/IEEE-bus command :SOUR:FSIM:PATH6:CORR:PATH 12

Entry value of the magnitude of the complex correlation coefficient. IEC/IEEE-bus command :SOUR:FSIM:PATH6:CORR:COEF 0.5

Entry value of the phase of the complex correlation coefficient. IEC/IEEE-bus command :SOUR:FSIM:PATH6:CORR:PHAS 180

Switch-on/off of lognormal fading. With lognormal f ading set, an additional, rather slowl y fluctuating am plitude

of a moving receiver is s imulated. Logn ormal fading h as a multipl ying effect on the path loss. The multiplication factor is time-varying and has a logarithmic norm al distribution. If a Rayleigh prof ile is set at the sam e time, this results in Suzuki fading. Hop mode is not possible when lognormal fading is active. (see HOP CONTROL)

IEC/IEEE-bus command :SOUR:FSIM:PATH6:LOGN:STAT ON

LOCAL CONST

STD DEV

Entry value of area constant. The area constant L (LOCAL CONST) and the speed v of the moving receiver determine the limit frequency f

of lognormal fading: fvL

= /

The power density spectrum of an unmodulated carrier cons is ts of a dis cr ete spectral line at f

and a frequency-dependent continuous component

described by:

−

÷ ø

min

⋅12 10

RF.

−⋅

S f const e

().=⋅

The lower limit of the range depends on the RF frequency f The following equation applies:

IEC/IEEE-bus command :SOUR:FSIM:PATH6:LOGN:LCON 150

Entry value for standard deviation of lognormal fading. IEC/IEEE-bus command :SOUR:FSIM:PATH1:LOGN:CSTD 6

1114.8564.12 E-2

4.9

Fading Modes ABFS

FINE DELAY Menu

With the FINE DELA Y mode, a better time resolutio n for the time delay of the ind ividual path can be achieved. Here, four paths are possible. Their system bandwidth is restricted to 4.6 MHz; this is sufficient for 3GPP with 3.84 Msymb/s. The time resolution is 1 ns.

Fig. 4-7 FINE DELAY menu

STATE

IGNORE RF CHANGES < 5%

STANDARD

Enable / disable fine d elay simulation. IEC/IEEE-bus command :SOUR:FSIM:FDEL:STAT ON | OFF

When enabled, frequency changes less than 5 % are ignored. That permits RF hopping faster than 3 ms.

IEC/IEEE-bus command :SOUR:FSIM:IGN:RFCH ON Opens a window for selecting a defined fading path setting.

Selection: 3GPP_3.3.1_CASE1: SPEED: 3 km/h

Path 1: DELAY 25 ns

PATH LOSS 0 dB

Path 2: DELAY 1001 ns

PATH LOSS 10 dB

3GPP_3.3.1_CASE2: SPEED: 3 km/h

Path 1: DELAY 25 ns

PATH LOSS 0 dB

Path 2: DELAY 1001 ns

PATH LOSS 0 dB

Path 3: DELAY 20025 ns

PATH LOSS 0 dB

3GPP_3.3.1_CASE3: SPEED: 120 km/h

Path 1: DELAY 25 ns

PATH LOSS 0 dB

Path 2: DELAY 285 ns

PATH LOSS 3 dB

Path 3: DELAY 546 ns

PATH LOSS 6 dB

Path 4: DELAY 806 ns

PATH LOSS 9 dB

3GPP_3.3.1_CASE4: SPEED: 3 km/h

Path 1: DELAY 25 ns

PATH LOSS 0 dB

Path 2: DELAY 1001 ns

PATH LOSS 0 dB

1114.8564.12 E-2

4.10

ABFS Fading Modes

3GPP_3.3.1_CASE5: SPEED: 50 km/h

Path 1: DELAY 25 ns

PATH LOSS 0 dB

Path 2: DELAY 1001 ns

PATH LOSS 10 dB

IEC/IEEE-bus command :SOUR:FSIM:FDEL:STAN G3C1

Note: - The path delay corresponds to the delay in 3GPP

25.104-320, Appendix B3. However, a basic delay of 25 ns for the fading simulator is taken into account.

SPEED UNIT

SET DEFAULT

PATH

STATE

PROFILE

FREQ RATIO

Selects the speed unit for the SPEED parameter. IEC/IEEE-bus command :SOUR:FSIM:FDEL:SPE:UNIT KMPH

Sets the default set ting for the path par ameters where path 1 is enabled an d the remaining paths are disabled.

IEC/IEEE-bus command :SOUR:FSIM:FDEL:DEF Displays the path for the following parameters. These parameters are

separately settable for every path. Enables or disables a path. If the cursor is place d over the p ath, the path c an

be enabled or disabled by activating one of the unit keys (toggle function). IEC/IEEE-bus command :SOUR:FSIM:FDEL:PATH2:STAT ON |

OFF

Selects the fading profile. For an explanation, see Standard Fading. In this menu, only the following settings are possible: pDOPP

IEC/IEEE-bus command :SOUR:FSIM:FDEL:PATH2:PROF PDOP RAYL (this setting is included for the 3GPP test cases.)

IEC/IEEE-bus command :SOUR:FSIM:FDEL:PATH2:PROF RAYL Input value for the ratio of the Doppler frequency shift to the set Doppler

frequency with FDOP fading (for an explanation, see Standard Fading). IEC/IEEE-bus command :SOUR:FSIM:FDEL:PATH2:FRAT 1

SPEED

DOPPLER FREQ

PATH LOSS

DELAY

1114.8564.12 E-2

Input value of the speed v of the moved receiver (for an explanation, see Standard Fading).

IEC/IEEE-bus command :SOUR:FSIM:FDEL:PATH2:SPE 100 Input value of the am ount of the Doppler frequenc y shift (for an expl anation,

see Standard Fading). IEC/IEEE-bus command :SOUR:FSIM:FDEL:PATH2:FDOP 92.3

Input value of the path loss. Setting range: 0.0 dB to 50.0 dB. IEC/IEEE-bus command :SOUR:FSIM:FDEL:PATH2:LOSS 3

Input value of the signal delay in the path. Setting range: 25 ns to 1637 µs IEC/IEEE-bus command :SOUR:FSIM:FDEL:PATH2:DEL 14.5E-6

4.11

Fading Modes ABFS

MOVING DELAY Menu

In MOVING DELAY mode, the fading simulator simulates dynamic propagation conditions in accordance with 3GPP test case 25.104-320, Appendix B3. Two paths are simulat ed; the delay of path 1 does not c hange, the dela y of path 2 slowl y moves bac k and forth in a sinusoid al manner. The t wo paths do not h ave a fading pr ofile (non-fadi ng) or a Doppler shift, but present the same level and the same phase.

∆τ

Fig. 4-1 Two paths for the MOVING DELAY menu

The delay of the moving path can be found according to the following equation:

æ ç

τ∆

ç è

In Appendix B3, the following values are suggested:

For further tests, bot h the DELAY MEAN and the variation parameters c an be modified. Mor eover, the two paths can have different levels.

MEAN_DELAY

DELAY MEAN = Delay path 1 DELAY VARIATION VARIATION PERIOD 157 s

VARIATION_DELAY

æ ç

++= )

sin(1

ç è

⋅

PERIOD_VARIATION

5 µs

Fig. 4-8 MOVING DELAY

STATE

Enable / disable the moving delay simulation. IEC/IEEE-bus command :SOUR:FSIM:MDEL:STAT ON | OFF

1114.8564.12 E-2

4.12

ABFS Fading Modes

IGNORE RF CHANGES < 5%

STANDARD SET DEFAULT

PATH

PATH LOSS

DELAY

PATH LOSS

When enabled, frequency changes less than 5 % are ignored. That permits RF hopping faster than 3 ms. IEC/IEEE-bus command :SOUR:FSIM:IGN:RFCH ON

Currently the same as SET DEFAULT. Sets the default settings for the path parameters.

IEC/IEEE-bus command :SOUR:FSIM:MDEL:DEF Displays the path for the following parameters. These parameters are

separately settable for every path. Input value of the path loss for the reference path.

Setting range 0.0 dB to 50.0 dB. IEC/IEEE-bus command :SOUR:FSIM:MDEL:REF:LOSS 3

Input value of the signal delay in the reference path. Setting range: 0.0 µs to 1638 µs

IEC/IEEE-bus command :SOUR:FSIM:MDEL:REF:DEL 14.5E-6 Input value of the path loss for the moving path.

Setting range 0.0 dB to 50.0 dB. IEC/IEEE-bus command :SOUR:FSIM:MDEL:MOV:LOSS 3

DELAY MEAN

DELAY VARIATION (PK-PK)

VARIATION PERIOD

Average delay value of the moving path. For further explanation, see above. Setting range: 0.25 µs to 1637.8 µs

IEC/IEEE-bus command :SOUR:FSIM:MDEL:MOV:DEL:MEAN

12.5E-6

Range of the delay varia tion for the moving path. T he peak-to-peak value is set. For further explanation, see above. Setting range : 0.3 µs to 100 µs

IEC/IEEE-bus command :SOUR:FSIM:MDEL:MOV:DEL:VAR 2.1E-6 Speed of the delay variation. After a VARIATION PERIOD expires, a complete

cycle is run through. Only for the moving path. Setting range : 10 s to 500 s

IEC/IEEE-bus command :SOUR:FSIM:MDEL:MOV:VPER 13.4

1114.8564.12 E-2

4.13

Fading Modes ABFS

BIRTH-DEATH Menu

In the BIRTH-D EATH m ode, the f ading s imulator simulates d ynamic pr opagat ion cond itions accord ing to 3GPP test case 25.104-32 0 , Anne x B4. Here, 2 paths are simulated, which alternately appear (BIRTH) or disappear (DEATH) at random positions. The time positions lie within the array of [-5, -4, -3, -2, - 1, 0 , 1 , 2, 3, 4, 5] µs. After a preset tabl e time (HOPPING DWELL), a path disappears from a position and simultaneously emerges at another randomly chosen pos ition. Duri ng this hop, the secon d path remains st able in its positi on. After a f urther HOPPING DWELL has expired, the second path changes its position, where this time, the first path remains in its position etc. Both paths never emerge at the same time position (see Fig. 4-10). According to Appen dix B4, every path has t he same attenuation an d phase and has no Do ppler shift. These values can, ho wever, be set in the BIRT H-DEATH menu for m ore comprehensive test ing. The dwell time of 191 ms (according to 3GPP) can be changed in the range from 100 ms to 5 s.

P1 P2 P1 P1 P2 P1P2 P2

012345-1-2-3-4-5 012345-1-2-3-4-5 012345-1-2-3-4-5

Fig. 4-9 Example of hopping sequence with BIRTH-DEATH fading

Fig. 4-10 BIRTH-DEATH menu

STATE

Enables / disables the BIRTH-DEATH simulation. IEC/IEEE-bus command :SOUR:FSIM:BIRT:STAT ON | OFF

IGNORE RF CHANGES < 5%

When enabled, frequency changes less than 5 % are ignored. That permits RF hopping faster than 3 ms. IEC/IEEE-bus command :SOUR:FSIM:IGN:RFCH ON

STANDARD SPEED UNIT

Currently the same as SET DEFAULT. Selects the speed unit for the SPEED parameter.

IEC/IEEE-bus command :SOUR:FSIM:BIRT:SPE:UNIT KMPH

1114.8564.12 E-2

4.14

ABFS Fading Modes

INSERTION LOSS SETTING MODE

SET DEFAULT

PATH

PROFILE

FREQ RATIO

Selects the setting mode for the insertion loss of the fading simulator. For an explanation, see STANDARD FADING.

IEC/IEEE-bus command :SOUR:FSIM:BIRT:ILOS:MODE NORM

:SOUR:FSIM:BIRT:ILOS:MODE LACP

Sets the default path parameters. IEC/IEEE-bus command :SOUR:FSIM:BIRT:DEF

Displays the path for the following parameters. These parameters are separately settable for every path.

Selects a fading pr ofile. O nly pD OPP is ava ilab le; the set ting of FREQ R AT IO = 0 results in a non-fading path. pDOPP(pure DOPPler): A transm iss ion pat h is simulated, which co nsis ts of a single direct connection from transmitter to moving receiver (discrete component). The Doppler frequency shift is determined by the DOPPLER FREQ and FREQ RATIO parameters.

IEC/IEEE-bus command :SOUR:FSIM:BIRT:PATH1:PROF PDOP Input value for the actual Doppler frequency shift ratio. For an explanation,

see STANDARD FADING. T he setting of FREQ R ATIO = 0 results in a nonfading path.

IEC/IEEE-bus command :SOUR:FSIM:BIRT:PATH1:FRAT 1

SPEED

DOPPLER FREQ

PATH LOSS

DELAY

DELAY RANGE

DELAY GRID

Input value of the speed v of the moving receiver. For an explanation, see STANDARD FADING. All entries in path 1 are also copied to path 2.

IEC/IEEE-bus command :SOUR:FSIM:BIRT:PATH1:SPE 100 Input value of the m aximum Doppler fr equency shift. For an explanation, see

STANDARD FADING. All entries in path 1 are also copied to path 2. IEC/IEEE-bus command :SOUR:FSIM:BIRT:PATH1:FDOP 92.3

Input value of the path loss. Setting range 0.0 dB to 50.0 dB. IEC/IEEE-bus command :SOUR:FSIM:BIRT:PATH2:LOSS 3

Input value of the bas ic signal delay in path 1. All entries in path 1 are also copied to path 2. Setting range: 5.0 µs to 1000.0 µs

IEC/IEEE-bus command :SOUR:FSIM:BIRT:PATH1:DEL 1000 E-3 The delay of both paths lies within this range. This parameter cannot be

edited. For both channels: -5.0 µs to +5.0 µs

Time grid of the individual randomly appearing car r iers . T he c ar rier s only have delays which lie within DELAY RANGE and which come to lie in the n * DELAY GRID (with -5 to +5). The parameter cannot be edited. Value = 1 µs for both channels.

HOPPING DWELL

1114.8564.12 E-2

Dwell time until the nex t BIRTH-DEATH oc currence. After this dwell t ime, the next path randomly changes its delay time. Setting range: 100.0 ms to 5000.0 ms

IEC/IEEE-bus command :SOUR:FSIM:BIRT:PATH1:HOPP:DWEL 1.2

4.15

Noise Generator ABFS

Noise Generator

In addition to the fad ing simulators it is also poss ible to equip ABFS with up to two noise generators (Option ABFS-B1 and ABFS-B3). The task of the noise gen erators is to add the noise to the ABF S output signal. W ith the fine adjustm ent of the nois e power ( CARRIER/NOI SE RAT IO), diff erent receive conditions can be simulated close to reality. The noise generator g enerates an AW GN (Additive White Gaus sian Noise) signa l, ie the nois e power density is Gaussian-distributed and the noise signal is added to the signal.

FADING

SIMULATOR

Noise-

generator

WGN

out

Fig. 4-11 Block diagram of fading simulator with integral noise generator

The noise power is entered in dBfs (dB under full scale), ie th e noise power is with reference t o full scale of ABFS.

Full-scale level corresponds to a constant sum vector of

VQI 5.022=+

Since neither the level/ power nor the crest fac tor of the input sig nal applied to ABFS is k nown, no C/N or S/N can be defined on ABFS.

The entry of a noise po wer of, say, -19.0 dBf s would yield a S/N ratio of 15.2 dB provide d that a fullscale QPSK signal (maximum sum vector = 0.5 V) with a crest factor of 3.8 dB is applied.

Notes on IEC/IEEE-bus commands: If two noise sources are available due to the presenc e of o ptions ABFS-B1

and ABFS-B3, all IEC/IEEE-b us comman ds relating to the indivi dual noise generators only differ fro m e ac h ot her by a n i den tif ier f ol low ing the AW G N command, eg operating mode setting:

IEC/IEEE-bus command AWGN1 :SOUR:AWGN[1]:MODE IEC/IEEE-bus command AWGN2 :SOUR:AWGN2:MODE

1114.8564.12 E-2

4.16

ABFS Noise Generator

MODE Menu With Built-in Noise Generators Option ABFS-B1 / Option ABFS-B3

If ABFS is equipped with option ABFS-B1 as well as with option ABFS-B3, the number of noise generators available is one or two. The following combinations of options ABFS-B1/ABFS-B3 are possible with the bas ic unit and optio n ABF S-B2. T he operating m odes or signal pat hs are d ispla yed in the MODE submenu of ABFS.

Table 4-1 Possible combinations of options with basic ABFS unit

Basic ABFS unit

Option ABFS-B1 first noise source

XXX

Option ABFS-B2 second fading group

Option ABFS-B3 second noise source

Fig. 4-12 shows the A BFS basic unit with b uilt-in option ABF S-B1. The ABFS-B1 n oise source alwa ys follows FSIMA1 in the signal path, it is not pos sible to connect channel 2 with the noise generator in mode 2CHANNEL/6PATH/2INPUT/2OUTPUT, for example.

Basic ABFS unit with built-in option ABFS-B1 (one noise generator available)

ILOSS A1

FSIM A-2CH/2IN/1OUT

MODE FSIM AWGN CALIBRATE MEM SEQ HOP CONTROL UTILITIES HELP

dB ILO SS A2

0.0

MODE FSIM 2CHANNEL/ 6PATH/2INPUT/1OUTPUT

NLEV A1

AWGN A1

IQ_IN1

IQ_IN2

-17.0

GROUP A

FSIMA1

FSIMA2

dBfs

AWGNA1

IQ_OUT1

0.0

Fig. 4-12 MODE menu (option ABFS-B1 installed)

When a second noise source (option ABFS-B3) is fitted, it follows FSIMA2 in the signal path of the basic unit or FSIMB1 if a second fading group (option ABFS-B2) is fitted. See Fig. 4-13 and Fig. 4-14.

1114.8564.12 E-2

4.17

Noise Generator ABFS

Basic ABFS unit with built-in opt ions ABFS-B1 and ABFS-B3 (two n oise gen er ator s )

ILOSS A1

FSIM A-2CH/2IN/2OUT

MODE FSIM AWGN CALIBRATE MEM SEQ HOP CONTROL UTILITIES HELP

dB ILO SS A2

0.0

MODE FSIM 2CHANNEL/ 6PATH/2INPUT/2OUTPUT

NLEV A1 -17.0 dBfs NLEV B1 -17.0 dBfs

AWGN A /B

IQ_IN1

IQ_IN2

GROUP A

FSIMA1

FSIMA2

AWGNA1

AWGNA2

Fig. 4-13 MODE menu (options ABFS-B1 / ABFS-B2 installed)

Basic ABFS unit with built-in opt ions ABFS-B1/ ABFS-B2 / ABFS-B3

ILOSS A1 0.0 dB ILOSS A2 0.0 dB

FSIM A-2CH/2IN/1OUT

FSIM B-1CH/1IN/1OUT

NLEV A1 -17.0 dBfs NLEV B1 -17.0 dBfs

AWGN A/B

IQ_OUT1

IQ_OUT2

ILOSS B1

0.0

MODE GROUPA FSIM

AWGN

GROUPB FSIM

AWGN CALIBRATE MEM SEQ HOP CONTROL UTILITIES HELP

MODE FSIM GROUP A 2CHANNEL/ 6PATH/2INPUT/1OUTPUT

MODE FSIM GROUP B 1CHANNEL/12PATH/1INPUT/1OUTPUT

GROUP A

IQ_IN1

IQ_IN2

FSIMA1

FSIMA2

AWGNA1

IQ_OUT1

IQ_IN1

FSIMB1 AWGNB1

FSIMB2

Fig. 4-14 MODE menu (options ABFS-B1 / ABFS-B2 / ABFS-B3 installed)

GROUP B

IQ_OUT1

1114.8564.12 E-2

4.18

ABFS Noise Generator

AWGN Menu

All noise generator settings can be found in the AWGN menu.

ILOSS A1

FSIM A-2CH/2IN/2OUT AWGN A1

MODE FSIM AWGN CALIBRATE MEM SEQ HOP CONTROL UTILITIES HELP

Fig. 4-15 AWGN menu

AWG N A1 STAT E (OPTION ABFS-B1)

AWG N A2 STAT E AWGN B1 STATE (OPTION ABFS-B3)

dB NLEV A1

0.0

AWGN A1 STATE OFF SIGNAL+NOISE SIG NAL NOISE

LEVEL 70.6 mV -17.0 dBfs SYSTEM BAND WIDTH 20.0 kHz

Switch-on/off of corresponding noise source. The noise source is an AWGN signal (Additive White Gaussian Nois e) . T he no is e g enerator has the follo win g modes:

SIGNAL+NOISE The fading signal is equipped with an AWGN signal

SIGNAL The noise generator remains in the signal path but no

NOISE Only the noise generator de livers its AWGN signal to the

OFF The noise generator is bypassed by means of a bypass

IEC/IEEE-bus command :SOUR:AWGN:STAT ON

-17.0

(Additive White Gaussian Noise).

noise is added to the output signal.

output, the input signal is not fed into the signal path.

circuit located in the signal path.

dBfs ILOSS A2

:SOUR:AWGN:MODE SN

0.0

LEVEL

SYSTEM BANDWIDTH

1114.8564.12 E-2

Entry value of noise power. The noise power is entered in dBf s (dB under full sc ale). The noise po wer is

the power in dBfs indicated in the header under NLEV. Setting range: -14.0 dBfs to –50.0 dBfs IEC/IEEE-bus command :SOUR:AWGN:SNR –22.0 dBfs

Entry value of system bandwidth. The system bandwidth is the RF bandwidth by which the noise power is calculated. ABFS ca n set the ban dwidth of the g enerated no ise onl y in ste ps. The noise bandwidth is always set. It corresponds to at least the 1.4-fold of the system bandwidth but max. 10 MHz.

Setting range: 10 kHz to 10 MHz; resolution: three digits IEC/IEEE-bus command :SOUR:AWGN:BAND 1.23 MHz

4.19

Calibration ABFS

Calibration

The internal cali brati on of ABFS can be called u p in the CALIBRAT E menu. Moreover, an of fset voltage can be entered for each input or output to compensate external DC offset voltages. The connection of the indiv idual in puts and o utputs is d isplayed in the C ALIBRAT E m enu and depends on the relevant mode set. If ABFS is equippe d with opti ons ABF S-B1, A BFS-B2 and ABFS- B3, the c alibrati ons are also c alled up for these modules for which the module offset and partly IQ imbalance have to be calibrated. All calibrations r un inter nally. Ca librat ion sh ould be ca lled u p after a warm - up tim e of the un it of approx . 1 hour or after a temperature change of more than 5°C.

CALIBRATE Menu

All calibration settings can be found in the CALIBRATE operating menu.

ILOSS A1

FSIM A-1CH/1IN/1OUT

MODE FSIM CALIBRATE MEM SEQ HOP CONTROL UTILITIES HELP

Fig. 4-16 CALIBRATE menu

CALIBRATE

DC-OFFSET

I_INA1 I_OUTA1 Q_INA1 Q_OUTA1 ...

0.0

CALIBRATE

DC-OFFSET

I_INA1 0.0 mV I_OUTA1 0.0 mV

Q_INA1 0.0 mV Q_OUTA1 0.0 mV I_INA2 0.0 mV I_OUTA2 0.0 mV Q_INA2 0.0 mV Q_OUTA2 0.0 mV

Activate internal calibration. Note: Calibration for warmed-up units only. IEC/IEEE-bus command :CAL:FSIM?

Entry of a user-defined of f s et volta ge f or the c orr es pond in g i npu t or o utp ut. An external carrier residual can be minimized.

Setting range: -10.0 mV to +10.0 mV IEC/IEEE-bus command :CAL:OFFS:I:INP2 5.1mV

ILOSS A2

:CAL:OFFS:Q:OUTP1 -2.3mV

0.0

1114.8564.12 E-2

4.20

ABFS Memory Sequence

Memory Sequence

In the memory sequence mode the unit automatically processes a list with stored device settings. Memory locations 1 to 50 ar e ava ilable. T he y are loa ded with SA VE and their s tored s ettings can either be called up individually using RECALL or automatically one after the other in the SEQUENCE mode.

The list is continuously processed from beginning to end starting with the index. The order of the memory sequence is selectable. A freely selectable dwell time can be assigned to each setting. The dwell time determines the duration of the setting. Its minimum value is 50 ms, maximum 60 seconds.

The list is subdivide d into 3 columns: list index , memory location number ( MEMORY) and dwell time (DWELL). The beginning of the list is assigned to index 1.

Table 4-2 Memory sequence; example of a list

Index Memory Dwell

001 09 50.0 ms

002 02 50.0 ms

003 01 75.0 ms

004 10 75.0 ms

... ... ...

Up to 10 sequence lists can b e create d. T he total number of possible list elem ents is m ax. 256, ie a lis t can have 256 entries at max. or may have less entries if the several lists have been created.

Each list is identified by its unique name and can be selected under this name. For a detailed description for processing the lists see Chapter 3, Section "List Editor".

1114.8564.12 E-2

4.21

Memory Sequence ABFS

Modes (MODE)

The following modes are available:

AUTO

SINGLE

STEP

EXT-SINGLE

Run from beginning to end of list including an automatic restart at the beginning. If another mode is switched on prior to AUTO mode, the run is continued from the current index.

IEC/IEEE-bus commands: :SYST:MODE MSEQ

:SYST:MSEQ:MODE AUTO :TRIG:MSEQ:SOUR EXT

Single run from begin ning to end of list. W hen SINGLE is selected, the run is not yet started. The ex ecutable func tion EXECUT E SINGLE SEQUENC E which the run can be started is displayed below the MODE line.

IEC/IEEE-bus commands: :SYST:MODE MSEQ

:SYST:MSEQ:MODE AUTO :TRIG:MSEQ:SOUR SING

Manual and stepwise list processing W hen STEP is activated, an automatic run is stopped and the cursor is placed on the display value of CURRENT INDEX. The list can now be run through step b y step from top to bottom using the rollkey.

IEC/IEEE-bus commands: :SYST:MODE MSEQ

:SYST:MSEQ:MODE STEP :TRIG:MSEQ:SOUR SING

Single run from beginning to end of list as described under SINGLE but triggered by an external trigger signal.

IEC/IEEE-bus commands: :SYST:MODE MSEQ

:SYST:MSEQ:MODE AUTO :TRIG:MSEQ:SOUR EXT

EXT-STEP

OFF

Step by step run b y m eans of ex ter na l tri gger s i gna l. Each trigger e ven t tri gger s an individual step.

IEC/IEEE-bus commands: :SYST:MODE MSEQ

:SYST:MSEQ:MODE STEP :TRIG:MSEQ:SOUR EXT

Switch-off of memory sequence mode. IEC/IEEE-bus command :SYST:MODE FIX

External Trigger

An external signal at the rear TRIGGER IN1 input triggers the memory sequence in modes EXT-SINGLE and EXT-STEP. The polarity of the active trigger edge can be set in the UTILITIES - TRIGGER - EXT TRIG SLOPE menu.

Access to mem ory sequence mode is pr ovided by the O PERATION and EDIT page of the MEM SEQ menu.

1114.8564.12 E-2

4.22

ABFS Memory Sequence

Menu selection:MEM SEQ

ILOSS A1

FSIM A-2CH/2IN/2OUT

MODE FSIM AWGN CALIBRATE MEM SEQ HOP CONTROL UTILITIES HELP

dB ILO SS A2

0.0

MODE OFF AUTO SINGLE STEP EXT-SINGLE EXT_STEP

RESET SEQUENCE

CURRENT INDEX 1

SELECT LIST... CURRENT LIST: MSEQ2

DELETE LIST... FUNCTION FILL INSERT DELETE EDIT/VIEW

Fig. 4-17 MEM SEQ menu, OPERATION page

MODE

Selection of operating mode; setting the mode has an effect on the different IEC/IEEE-bus command systems (see above).

EXECUTE SINGLE SEQUENCE

Starts the unique ru n of a memory sequence. This menu option can only be seen with MODE SINGLE selected.

IEC/IEEE-bus command :TRIG:MSEQ

0.0

RESET SEQUENCE

CURRENT INDEX

SELECT LIST...

DELETE LIST...

FUNCTION

Return to beginning of list. IEC/IEEE-bus command :ABOR:MSEQ

Display of current list index. Setting value of c urrent list index in MODE STEP mode.

Selection of a list or creation of a new list (see Chapter 3, List Editor).

IEC/IEEE-bus command :SYST:MSEQ:SEL "MSEQ1"

Deletion of a list (see Chapter 3, Section "List Editor"). IEC/IEEE-bus command :SYST:MSEQ:DEL "MSEQ2"

Selection of the ed itor function for processing a list (see Chapter 3, Section "List Editor").

IEC/IEEE-bus command :SYST:MSEQ

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4.23

Memory Sequence ABFS

The second page of the M EM S EQ menu, the EDIT page, is ac tivated automatically if one of the ed iti ng functions is selected in the FUNCTION line. The list exec uted in the SELECT LIST line as CURRENT LIST is indicated.

ILOSS A1

FSIM A-1CH/1IN/1OUT

MODE FSIM AWGN CALIBRATE MEM SEQ HOP CONTROL UTILITIES HELP

dB ILO SS A2

0.0

SELECT LIST... CURRENT: MSEQ2 FUNCTION FILL INSERT DELETE EDIT/VIEW

-INDEX FREE 0232 LEN 0024 MEMORY DWELL

0001 09 50 ms

0002 02 50 ms 0003 01 60 ms 0004 23 75 ms 0005 09 90 ms 0006 10 90 ms 0007 08 50 ms 0008 11 65 ms

Fig. 4-18 MEM SEQ menu, EDIT page

INDEX

FREE

LEN

Index of list.

Indication of list entries that are still free.

Length of current list.

0.0

MEMORY

DWELL

Parameter: memory location number; value range 1 to 50.

Parameter: dwell time; value range 50 ms to 60 sec, stepsize 1 ms.

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4.24

ABFS HOP CONTROL

HOP CONTROL

With the HOP mode of ABFS it is poss ible to sim ulate frequenc y hopping. In th is mode, a s equence of fixed frequency points is scrolled through. Since a list index ( = channel number) is transmitted v ia the serial hop interfac e (HOP CONT ROL 1 and HO P CONTROL 2) , a new f ading frequenc y f or the f ading channel is selected from the HOP frequency lists. The fading frequencies are RF carrier freque ncies at which t he IQ si gnal is m odulate d and tr ans m itted . With manual operation, this carrier frequency is entered in the fading menu under RF - FREQUENCY.

ABFS has two hop interfaces , ie two different f requency lists can be pr ocessed at the sam e time. The frequency lists are assigned to the displayed frequency channels in the HOP CONTROL menu. With option ABFS-B2 (second fading group) f itted, selection between fading c hannels B1/B2 or A2 is possible under menu item HOP CONTROL 2.

To maintain accurate tim ing, s witchover of fading f requenc ies can be s tarted f ollowing the transm ission of the list index via a trigger signal. The var iable transmiss ion times of the RS232 HO P interfaces that are due to the baud rate as well as the d ifferent index lengths (SHORT_CODE or LONG_CODE) no longer have to be taken into account for the ABFS response time. For transmitting the interru pt signals the two trigg er lines (Trigger I N 1 and Trigger IN 2) at the rear of ABFS or the DSR lines (pin 6) of the two hop interfaces are available. The polarity of the active trigger edge c an be set in the UTILITIES - TRIGG ER - EXT TRIG SLOPE menu. The interrupt inputs can be switched on or over by the software.

The fading output signal is swit ched off when the new fading f requency is calculated a nd set. This is indicated at the external BLANK connector. The polarity of the BLANK signal can be set in the UTILITIES - TRIGGER - BLANK POLARITY menu.

This setting is not permitted in the HOP m ode. This is due to the long calculation tim e of a f requency change under LOGNORMAL fading. In the fading menu, the entry of the carrier frequency and the Doppler frequency depending on the carrier frequency are inhibited during active hopping.

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4.25

HOP CONTROL ABFS

HOP CONTROL Without Trigger Control

If trigger control is switched off in the HOP CONTROL menu (HOP TRIGGER OFF), the ne w fading frequency is sent to th e corresponding fad ing modules imm ediately after recepti on of a list index. T his frequency is set by the fading modules. The fading process is interrupted during t he calculation and setting of the new fading param eters. The outp ut si gnal is sw itche d to 0 V . This is in dica ted at ABFS b y means of the BLANK line. See Fig. 4-19 for more information.

Fig. 4-19 Timing diagram during HOP CONTROL without trigger control

Signal 1 indicates the fading output signal. Signal 4 corresponds to the RxD l ine of the hopping interf ace. It shows the data tr affic on the RS 232

hop interface, 1 b yte (list index) + 1 star t and 1 stop bit at a trans mission rate of 115200 b/s (approx. 90µs).

After reception of a new fading frequenc y ABFS implements a certain interval (approx. 100µs) dur ing which the current fading pr ofile can be proc essed. ABFS then ac tivates the BLAN K line (signal 2) and starts to calculate the new fadin g profile. The time required f or the calculation and sett ing of the new fading parameters st rongly depends on the num ber of paths ac t ivate d an d th e fading profiles s et. ABFS ensures that the output signal is active again not later than 3.5 ms after transmission of the list index.

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4.26

ABFS HOP CONTROL

HOP CONTROL With Trigger Control

To maintain accurate timing, frequency transmission to the modules can be started via an external trigger as soon as the transmission of the list index is completed. The variable transmission tim es of the serial HOP CONTROL interfaces therefore need not be taken into account. The ne w frequency index can be sent to ABFS imm ediately after the tr igger edge while the previous data rec ord is transmitted to the m odules. The serial interfac es have a data buff er of 16 bytes.

Fig. 4-20 Timing diagram during HOP CONTROL with trigger control

Signal 3 corresponds to the tri gger signal, either TRIGGER IN1 / IN2 or DT R line (pin 6) of the hop interface HOP CONTROL 1 / HOP CONTROL 2 After reception of th e trigger signal ABFS im plements a certain interval ( approx. 100µs) during which the current fading profile can be proc ess ed. ABFS then activates t he BL ANK line (signal 2) and starts to calculate the new fading profile. The time required for the calculation and setting of the new fading parameters strongly depends on the number of paths activated and the fading profiles set. ABFS ensures that the fading signal is active again not later than 3.5 ms after having triggered the trigger edge.

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4.27

HOP CONTROL ABFS

HOP CONTROL Menu

All settings regarding the HOP CONTROL function are located in the HOP CONTROL menu.

ILOSS A1

FSIM A-1CH/1IN/1OUT

MODE GROUPA FSIM GROUPB FSIM CALIBRATE MEM SEQ HOP CONTROL UTILITIES HELP

0.0

FSIM B-1CH/1IN/1OUT

TRANSFER SHORT_CODE LONG_CODE

HOP TRIGGER OFF EXT RS232

HOP CONTROL 1 A1 A1/A2

STATE OFF SELECT LIST... CURRENT: HOP10 DELETE LIST... FUNCTION FILL INSERT DELETE EDIT|VIEW

HOP CONTROL 2 A2 B1/B2

STATE OFF ON SELECT LIST... CURRENT: HOP20 DELETE LIST... FUNCTION FILL INSERT DELETE EDIT|VIEW

Fig. 4-21 HOP CONTROL menu

TRANSFER

Setting the size of the list i ndex to be tr ansm itted. For s electi ng the frequ ency from the corresponding HOP lists, 1 byte or 2 bytes can be transmitted.

SHORT CODE 1 byte, for lists with up to 255 entries LONG CODE 2 bytes, for lists with up to 2000 entries

HOP TRIGGER

Selection of the trig ger for the hop mode. T he trigger can either be triggered via the external BNC trigger connector s Trigger IN 1 and IN 2 or via th e DSR lines of the corresponding RS232 hop interface HOP CONTROL 1 / HOP CONTROL 2.

The DSR line (pin 6) of fers the advantage t hat no additional trigg er lines are needed so that a trigger can be activated via the DTR signal of the host. This setting is only possible for all the hop interfaces.

OFF Trigger control of f, frequency is im mediatel y set after transm ission of

the list index.

EXT Trigger control on, trigger source for:

HOP CONTROL 1: TRIGGER IN 1 HOP CONTROL 2: TRIGGER IN 2

RS232 Trigger control on, trigger source for:

HOP CONTROL 1: DTR line pin 6 of HOP CONTROL 1 HOP CONTROL 2: DTR line pin 6 of HOP CONTROL 2

IEC/IEEE-bus command :TRIG:HOP:STAT ON

ILOSS B1

HOP 1

:TRIG:HOP:SOUR EXT

0.0

HOP CONTROL 1

Indication of fading channels set with the frequency of HOP CONTROL 1. With option ABFS-B2 fitted (sec ond fading group), the assignment of fading channels can be switched under HOP CONTROL 2, for HOP CONTROL 1 from A1/A2 to A2.

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4.28

ABFS HOP CONTROL

STATE

SELECT LIST

DELETE LIST

FUNCTION

HOP CONTROL 2

Switch-on/off of HOP CONTROL 1. IEC/IEEE-bus command :SOUR:HOP:STAT ON

Selection of a list or creation of a new list (see Chapter 3, Section "List Editor").

IEC/IEEE-bus command :SOUR:HOP:SEL "HOP13"

Deletion of a list (see Chapter 3, Section "List Editor"). IEC/IEEE-bus command :SOUR:HOP:DEL "HOP12"

Selection of the ed itor function for processing a list (see Chapter 3, Section "List Editor").

IEC/IEEE-bus command :SOUR:HOP:FREQ

540MHz,1.2GHz,1.9GHz,...

Indication of fading channels set with the frequency of HOP CONTROL 2. With option ABFS-B2 fitted, the assignm ent of the channe ls of GRO UP A and

GROUP B can be switched over.

HOP CONTROL 1 A1/A2 <-> A1 HOP CONTROL 2 B1/B2 <-> A2 IEC/IEEE-bus command :SOUR:HOP2:CONT A2

STATE

SELECT LIST

DELETE LIST

FUNCTION

Switch-on/off of HOP CONTROL 2. IEC/IEEE-bus command :SOUR:HOP2:STAT ON

Selection of a list or creation of a new list (see chapter 3, List Editor). IEC/IEEE-bus command :SOUR:HOP2:SEL "HOP23"

Deletion of a list (see chapter 3, List Editor). IEC/IEEE-bus command :SOUR:HOP2:DEL "HOP22"

Selection of the editor functions for processing a list (see chapter 3, List Editor).

IEC/IEEE-bus command :SOUR:HOP2:FREQ 540MHz,1.2GHz,1.9GHz,...

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4.29

HOP CONTROL ABFS

The second page of the HOP CONTRO L menu, the EDIT page, is act ivated autom atically if one of the editing functions of the FUNCTION line is selected. The list executed in the SELECT LIST line as CURRENT is indicated.

ILOSS A1

FSIM A-1CH/1IN/1OUT

MODE FSIM AWGN CALIBRATE MEM SEQ HOP CONTROL UTILITIES HELP

dB ILOSS A2

0.0

SELECT LIST... CURRENT: HOP10 FUNCTION FILL INSERT DELETE EDIT/VIEW

-INDEX FREE 1832 LEN 0168 FREQUENCY

0001 100.000 000 0 MHz

0002 90.000 000 0 MHz 0003 110.000 000 0 MHz 0004 50.000 000 0 MHz 0005 945.000 000 0 MHz 0007 956.000 000 0 MHz 0008 213.000 000 0 MHz

Fig. 4-22 HOP CONTROL menu, EDIT page

INDEX

FREE

LENGTH

Index of list.

Indication of list entries that are still free.

Length of current list.

0.0

FREQUENCY

Parameter: carrier frequency for fading channel selected under HOP CONTROL.

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4.30

ABFS Utilities

Utilities

The UTILITIES menu compr ises submenus for general functio ns that are not directly r elated to signal generation.

IEC/IEEE-Bus Address (SYSTEM - GPIB)

The SYSTEM – GPIB s ubmenu provides access to th e remote control address. T he setting range is from 0 to 30. Default address 28 is factory-set.

Menu selection:UTILITIES -SYSTEM -GPIB

ILOSS A1

FSIM A-1CH/1IN/1OUT

MODE FSIM CALIBRATE MEM SEQ HOP CONTROL UTILITIES HELP

dB ILOSS A2

0.0

SYSTEM PROTECT DIAG TEST TRIGGER BEEPER

GPIB RS232 LANGUAGE

ADDRESS 28

Fig. 4-23 UTILITIES - SYSTEM – GPIB menu

ADDRESS

Entry value of IEC/IEEE-bus address. IEC/IEEE-bus command :SYST:COMM:GPIB:ADDR 28

0.0

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4.31

Utilities ABFS

Parameter of RS-232-C Interface (SYSTEM - RS232)

The SYSTEM-RS232 subm enu provides acc ess to the conf iguration of the RS-232-C i nterfac e and the hop interfaces. The pin assignment of the interfaces corresponds to that of a PC.

Menu selection:UTILITIES - SYSTEM - RS232

ILOSS A1

FSIM A-1CH/1I N/1OUT

MODE FSIM CALIBRATE MEM SEQ HOP CONTROL UTILITIES HELP

dB ILOSS A2

0.0

SYSTEM PROTECT DIAG TEST TRIGGER BEEPER

GPIB RS232 LANGUAGE

DATA FORMAT 8 BIT PARITY NO STOP BIT 1

BAUD RATE RS232 9600 bps

HANDSHAKE RS232 RTS/CTS

BAUD RATE HOP CONTROL 9600 bps

Fig. 4-24 UTILITIES - SYSTEM – RS232 menu

DATA FORMAT

PARITY

Display value of number of data bits. This value is fixed and cannot be modified.

Display value of parity . This value is fixed and cannot be modified.

0.0

STOP BIT

BAUD RATE RS232

Display value of number of stop bits. This value is fixed and cannot be modified.

Selection of transmission rate for the RS-232-C interface . IEC/IEEE-bus command :SYST:COMM:SER:BAUD 9600

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4.32

Rohde&Schwarz ABFS Operating Manual

Specifications and Main Features

Frequently Asked Questions

User Manual

Supplement to Data Sheet ABFS

Safety Instructions

Informaciones de seguridad

ABFS Putting into Operation

3 Manual Operation

Fading Modes

Basic Units With 12 Paths

Fading With Option ABFS-B2

Fading Setting Parameters - Correlation Between Paths

FSIM Menu (without option B49) /STANDARD FAD Menu (with option B49)

FINE DELAY Menu

MOVING DELAY Menu

BIRTH-DEATH Menu

Noise Generator

MODE Menu With Built-in Noise Generators Option ABFS-B1 / Option ABFS-B3

AWGN Menu

Calibration

CALIBRATE Menu

Memory Sequence

Modes (MODE)

External Trigger

HOP CONTROL

HOP CONTROL Without Trigger Control

HOP CONTROL With Trigger Control

HOP CONTROL Menu

Utilities

IEC/IEEE-Bus Address (SYSTEM - GPIB)

Parameter of RS-232-C Interface (SYSTEM - RS232)