Rohde & Schwarz ABFS User manual

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1114.8564.12-021
Test and Measurement
Division
Operating Manual
Baseband Fading Simulator
ABFS
1114.8506.02
Printed in the Federal
Republic of Germany

1114.8564.12 B E-1
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 Input value of RF frequency of channel 1.
IEC/IEEE-bus command :SOUR:FSIM:FDEL:CHAN1:RF 100MHz
RF FREQUENCY CH2 Input value of RF frequency of channel 2.
IEC/IEEE-bus command :SOUR:FSIM:FDEL:CHAN2:RF 100MHz
FSIM - MOVING DELAY menu:
RF FREQUENCY Input value of RF frequency.
IEC/IEEE-bus command :SOUR:FSIM:MDEL:CHAN:RF 100MHz
FSIM - BIRTH-DEATH menu:
RF FREQUENCY Input value of RF frequency.
IEC/IEEE-bus command :SOUR:FSIM:BIRT:CHAN:RF 100MHz
IEC/IEEE-bus commands:
[: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

ABFS Tabbed Divider Overview
1114.8564.12 RE E-1
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 A E-1
Supplement to Data Sheet ABFS
Enhanced fading functions for WCDMA 3GPP with option ABFSB49
ABFSB49 extends the functionality of the baseband fading simulator ABFS to include WCDMA 3GPP
channel simulation. It adds three new modes to the fading simulator 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 delay mode, two paths are simulated: for one path the delay remains constant, 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 periodiationvar t2
sin
2
variationdelay
1pathdelay pk-pk π
⋅+
Delay variation (peak-peak) 150 ns to 50 µs
Variation period 10 s to 500 s
Delay step size <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
Ordering Information
Enhanced fading functions for WCDMA 3GPP ABFSB49 1115.0909.02

ABFS Contents
1114.8564.12 3 E-2
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