R&S® FSV-K76/-K77
3GPP TD-SCDMA BTS and UE
Measurement Applications
Operating Manual
(;ÚÚ32)
1176.7603.02 ─ 06
Operating Manual
Test & Measurement
This manual describes the following R&S®FSV/FSVA options:
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R&S FSV-K76 (1310.8603.02)
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R&S FSV-K77 (1310.8655.02)
This manual describes the following R&S FSV/FSVA models with firmware version 3.00 and higher:
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R&S®FSV4 (1321.3008K04)
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R&S®FSVA4 (1321.3008K05)
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R&S®FSV7 (1321.3008K07)
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R&S®FSVA7 (1321.3008K08)
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R&S®FSV13 (1321.3008K13)
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R&S®FSVA13 (1321.3008K14)
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R&S®FSV30 (1321.3008K30)
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R&S®FSVA30 (1321.3008K31)
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R&S®FSV40 (1321.3008K39/1321.3008K40)
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R&S®FSVA40 (1321.3008K41)
It also applies to the following R&S®FSV models. However, note the differences described in Chapter 1.4,
"Notes for Users of R&S FSV 1307.9002Kxx Models", on page 11.
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R&S®FSV3 (1307.9002K03)
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R&S®FSV7 (1307.9002K07)
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R&S®FSV13 (1307.9002K13)
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R&S®FSV30 (1307.9002K30)
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R&S®FSV40 (1307.9002K39/1307.9002K40)
© 2015 Rohde & Schwarz GmbH & Co. KG
Mühldorfstr. 15, 81671 München, Germany
Phone: +49 89 41 29 - 0
Fax: +49 89 41 29 12 164
Email: info@rohde-schwarz.com
Internet: www.rohde-schwarz.com
Subject to change – Data without tolerance limits is not binding.
R&S® is a registered trademark of Rohde & Schwarz GmbH & Co. KG.
Trade names are trademarks of the owners.
The following abbreviations are used throughout this manual: R&S®FSV/FSVA is abbreviated as R&S FSV/FSVA.
R&S® FSV-K76/-K77
Contents
1 Preface.................................................................................................... 7
1.1 Documentation Overview............................................................................................. 7
1.2 Conventions Used in the Documentation...................................................................9
1.2.1 Typographical Conventions.............................................................................................9
1.2.2 Conventions for Procedure Descriptions.........................................................................9
1.2.3 Notes on Screenshots.....................................................................................................9
1.3 How to Use the Help System......................................................................................10
1.4 Notes for Users of R&S FSV 1307.9002Kxx Models................................................ 11
2 Introduction.......................................................................................... 12
3 Instrument Functions.......................................................................... 13
Contents
3.1 Code Domain Analysis............................................................................................... 14
3.1.1 Menu and Softkey Description...................................................................................... 15
3.1.1.1 Softkeys of the Code Domain Analyzer........................................................................ 16
3.1.1.2 Softkeys of the Frequency Menu.................................................................................. 42
3.1.1.3 Softkeys of the Amplitude Menu................................................................................... 43
3.1.1.4 Softkeys of the Auto Set Menu......................................................................................46
3.1.1.5 Softkeys of the Sweep Menu........................................................................................ 48
3.1.1.6 Softkeys of the Trace Menu for CDA Measurements....................................................49
3.1.1.7 Softkeys of the Trigger Menu for CDA Measurements................................................. 50
3.1.1.8 Softkeys of the Input/Output Menu for CDA Measurements......................................... 51
3.2 RF Measurements....................................................................................................... 55
3.2.1 Signal Channel Power...................................................................................................55
3.2.2 Adjacent Channel Power (CH Power ACLR)................................................................ 56
3.2.3 Spectrum Emission Mask..............................................................................................56
3.2.4 Occupied Bandwidth..................................................................................................... 57
3.2.5 Complementary Cumulative Distribution Function (CCDF)...........................................57
3.2.6 Power vs Time.............................................................................................................. 58
3.2.7 Softkeys and Menus for RF Measurements (K76/K77).................................................58
3.2.7.1 Softkeys of the Measurement Menu............................................................................. 58
3.2.7.2 Softkeys of the Frequency Menu.................................................................................. 88
3.2.7.3 Softkeys of the Span Menu for RF Measurements....................................................... 91
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3.2.7.4 Softkeys of the Amplitude Menu for RF Measurements................................................92
3.2.7.5 Softkeys of the Bandwidth Menu...................................................................................97
3.2.7.6 Softkeys of the Sweep Menu...................................................................................... 104
3.2.7.7 Softkeys of the Input/Output Menu for RF Measurements..........................................107
3.3 Further Information...................................................................................................109
3.3.1 Detector Overview.......................................................................................................109
3.3.2 Trace Mode Overview................................................................................................. 110
3.3.3 Selecting the Appropriate Filter Type..........................................................................112
3.3.4 List of Available RRC and Channel Filters.................................................................. 112
3.3.5 Ranges and Range Settings....................................................................................... 114
3.3.6 ASCII File Export Format............................................................................................ 115
3.3.7 Format Description of Spectrum Emission Mask XML Files....................................... 116
3.3.8 Provided XML Files for the Spectrum Emission Mask Measurement......................... 121
Contents
3.3.9 Fast Spectrum Emission Mask Measurements...........................................................124
3.3.10 Predefined CP/ACLR Standards.................................................................................126
3.3.11 Optimized Settings for CP/ACLR Test Parameters.....................................................127
4 Remote Control Commands..............................................................130
4.1 Notation......................................................................................................................131
4.2 CALCulate Subsystem..............................................................................................133
4.2.1 CALCulate:FEED Commands.....................................................................................134
4.2.2 CALCulate:MARKer:FUNCtion Commands................................................................ 136
4.2.3 Other CALCulate Commands Referenced in this Manual...........................................144
4.2.3.1 CALCulate:DELTamarker subsystem......................................................................... 144
4.2.3.2 CALCulate:LIMit subsystem........................................................................................152
4.2.3.3 CALCulate:LIMit:ESPectrum subsystem.....................................................................159
4.2.3.4 CALCulate:MARKer subsystem.................................................................................. 163
4.2.3.5 CALCulate:PSE subsystem........................................................................................ 169
4.2.3.6 CALCulate:STATistics subsystem.............................................................................. 170
4.2.3.7 Other Referenced CALCulate Commands..................................................................174
4.3 CONFigure Subsystem............................................................................................. 175
4.4 DISPlay Subsystem...................................................................................................181
4.5 INSTrument subsystem............................................................................................ 188
4.6 SENSe Subsystem.................................................................................................... 188
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4.6.1 SENSe:CDPower Commands.....................................................................................189
4.6.2 SENSe:POWer Commands........................................................................................ 195
4.6.3 Other SENSe Commands Referenced in this Manual................................................ 196
4.6.3.1 SENSe:ADJust Subsystem......................................................................................... 196
4.6.3.2 SENSe:ESPectrum Subsystem.................................................................................. 198
4.6.3.3 SENSe:BANDwidth subsystem...................................................................................210
4.6.3.4 SENSe:FREQuency subsystem..................................................................................214
4.6.3.5 SENSe:POWer subsystem......................................................................................... 217
4.6.3.6 SENSe:SWEep subsystem......................................................................................... 227
4.6.3.7 Other Commands in the SENSe Subsystem.............................................................. 233
4.7 Status Reporting System of the TD-SCDMA Measurement Applications (K76/K77)
.................................................................................................................................... 234
4.8 TRACe Subsystem.................................................................................................... 235
Contents
4.9 Other Commands Referenced in this Manual........................................................ 241
4.9.1 INPut commands.........................................................................................................242
4.9.2 TRIGger Commands................................................................................................... 249
4.9.3 Other Referenced Commands.................................................................................... 251
List of Commands..............................................................................257
Index....................................................................................................263
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Contents
6Operating Manual 1176.7603.02 ─ 06
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1 Preface
Preface
Documentation Overview
1.1 Documentation Overview
The user documentation for the R&S FSV/FSVA is divided as follows:
●
Quick Start Guide
●
Operating Manuals for base unit and options
●
Service Manual
●
Online Help
●
Release Notes
Quick Start Guide
This manual is delivered with the instrument in printed form and in PDF format on the
CD. It provides the information needed to set up and start working with the instrument.
Basic operations and basic measurements are described. Also a brief introduction to
remote control is given. The manual includes general information (e.g. Safety Instructions) and the following chapters:
Chapter 1 Introduction, General information
Chapter 2 Front and Rear Panel
Chapter 3 Preparing for Use
Chapter 4 Firmware Update and Installation of Firmware Options
Chapter 5 Basic Operations
Chapter 6 Basic Measurement Examples
Chapter 7 Brief Introduction to Remote Control
Appendix LAN Interface
Operating Manuals
The Operating Manuals are a supplement to the Quick Start Guide. Operating Manuals
are provided for the base unit and each additional (software) option.
The Operating Manual for the base unit provides basic information on operating the
R&S FSV/FSVA in general, and the "Spectrum" mode in particular. Furthermore, the
software options that enhance the basic functionality for various measurement modes
are described here. The set of measurement examples in the Quick Start Guide is
expanded by more advanced measurement examples. In addition to the brief introduction to remote control in the Quick Start Guide, a description of the basic analyzer commands and programming examples is given. Information on maintenance, instrument
interfaces and error messages is also provided.
In the individual option manuals, the specific instrument functions of the option are
described in detail. For additional information on default settings and parameters, refer
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R&S® FSV-K76/-K77
to the data sheets. Basic information on operating the R&S FSV/FSVA is not included
in the option manuals.
The following Operating Manuals are available for the R&S FSV/FSVA:
●
●
●
●
●
●
●
●
●
●
●
●
●
●
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Preface
Documentation Overview
R&S FSV/FSVA base unit; in addition:
– R&S FSV-K9 Power Sensor Support
– R&S FSV-K14 Spectrogram Measurement
R&S FSV-K7 Analog Demodulation and R&S FSV-K7S FM Stereo Measurements
R&S FSV-K10 GSM/EDGE Measurement
R&S FSV-K30 Noise Figure Measurement
R&S FSV-K40 Phase Noise Measurement
R&S FSV-K70 Vector Signal Analysis Operating Manual
R&S FSV-K70 Vector Signal Analysis Getting Started (First measurements)
R&S FSV-K72 3GPP FDD BTS Analysis
R&S FSV-K73 3GPP FDD UE Analysis
R&S FSV-K76/77 3GPP TD-SCDMA BTS/UE Measurement
R&S FSV-K82/83 CDMA2000 BTS/MS Analysis
R&S FSV-K84/85 1xEV-DO BTS/MS Analysis
R&S FSV-K91 WLAN IEEE 802.11
R&S FSV-K93 WiMAX IEEE 802.16 OFDM/OFDMA Analysis
R&S FSV-K100/K104 EUTRA / LTE Downlink Measurement Application
R&S FSV-K101/K105 EUTRA / LTE Uplink Measurement Application
These manuals are available in PDF format on the CD delivered with the instrument.
Service Manual
This manual is available in PDF format on the CD delivered with the instrument. It
describes how to check compliance with rated specifications, instrument function,
repair, troubleshooting and fault elimination. It contains all information required for
repairing the R&S FSV/FSVA by replacing modules. The manual includes the following
chapters:
Chapter 1 Performance Test
Chapter 2 Adjustment
Chapter 3 Repair
Chapter 4 Software Update / Installing Options
Chapter 5 Documents
Online Help
The online help contains context-specific help on operating the R&S FSV/FSVA and all
available options. It describes both manual and remote operation. The online help is
installed on the R&S FSV/FSVA by default, and is also available as an executable .chm file on the CD delivered with the instrument.
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R&S® FSV-K76/-K77
Release Notes
The release notes describe the installation of the firmware, new and modified functions, eliminated problems, and last minute changes to the documentation. The corresponding firmware version is indicated on the title page of the release notes. The current release notes are provided in the Internet.
Preface
Conventions Used in the Documentation
1.2 Conventions Used in the Documentation
1.2.1 Typographical Conventions
The following text markers are used throughout this documentation:
Convention Description
"Graphical user interface elements"
KEYS Key names are written in capital letters.
File names, commands,
program code
Input Input to be entered by the user is displayed in italics.
Links Links that you can click are displayed in blue font.
"References" References to other parts of the documentation are enclosed by quota-
All names of graphical user interface elements on the screen, such as
dialog boxes, menus, options, buttons, and softkeys are enclosed by
quotation marks.
File names, commands, coding samples and screen output are distinguished by their font.
tion marks.
1.2.2 Conventions for Procedure Descriptions
When describing how to operate the instrument, several alternative methods may be
available to perform the same task. In this case, the procedure using the touchscreen
is described. Any elements that can be activated by touching can also be clicked using
an additionally connected mouse. The alternative procedure using the keys on the
instrument or the on-screen keyboard is only described if it deviates from the standard
operating procedures.
The term "select" may refer to any of the described methods, i.e. using a finger on the
touchscreen, a mouse pointer in the display, or a key on the instrument or on a keyboard.
1.2.3 Notes on Screenshots
When describing the functions of the product, we use sample screenshots. These
screenshots are meant to illustrate as much as possible of the provided functions and
possible interdependencies between parameters.
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The screenshots usually show a fully equipped product, that is: with all options installed. Thus, some functions shown in the screenshots may not be available in your particular product configuration.
Preface
How to Use the Help System
1.3 How to Use the Help System
Calling context-sensitive and general help
► To display the general help dialog box, press the HELP key on the front panel.
The help dialog box "View" tab is displayed. A topic containing information about
the current menu or the currently opened dialog box and its function is displayed.
For standard Windows dialog boxes (e.g. File Properties, Print dialog etc.), no contextsensitive help is available.
► If the help is already displayed, press the softkey for which you want to display
help.
A topic containing information about the softkey and its function is displayed.
If a softkey opens a submenu and you press the softkey a second time, the submenu
of the softkey is displayed.
Contents of the help dialog box
The help dialog box contains four tabs:
●
"Contents" - contains a table of help contents
●
"View" - contains a specific help topic
●
"Index" - contains index entries to search for help topics
●
"Zoom" - contains zoom functions for the help display
To change between these tabs, press the tab on the touchscreen.
Navigating in the table of contents
●
To move through the displayed contents entries, use the UP ARROW and DOWN
ARROW keys. Entries that contain further entries are marked with a plus sign.
●
To display a help topic, press the ENTER key. The "View" tab with the corresponding help topic is displayed.
●
To change to the next tab, press the tab on the touchscreen.
Navigating in the help topics
●
To scroll through a page, use the rotary knob or the UP ARROW and DOWN
ARROW keys.
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●
Searching for a topic
1. Change to the "Index" tab.
2. Enter the first characters of the topic you are interested in. The entries starting with
3. Change the focus by pressing the ENTER key.
4. Select the suitable keyword by using the UP ARROW or DOWN ARROW keys or
5. Press the ENTER key to display the help topic.
Changing the zoom
1. Change to the "Zoom" tab.
Preface
Notes for Users of R&S FSV 1307.9002Kxx Models
To jump to the linked topic, press the link text on the touchscreen.
these characters are displayed.
the rotary knob.
The "View" tab with the corresponding help topic is displayed.
2. Set the zoom using the rotary knob. Four settings are available: 1-4. The smallest
size is selected by number 1, the largest size is selected by number 4.
Closing the help window
► Press the ESC key or a function key on the front panel.
1.4 Notes for Users of R&S FSV 1307.9002Kxx Models
Users of R&S FSV 1307.9002Kxx models should consider the following differences to
the description of the newer R&S FSV/FSVA 1321.3008Kxx models:
●
Functions that are based on the Windows7 operating system (e.g. printing or setting up networks) may have a slightly different appearance or require different settings on the Windows XP based models. For such functions, refer to the Windows
documentation or the documentation originally provided with the R&S FSV instrument.
●
The R&S FSV 1307.9002K03 model is restricted to a maximum frequency of
3 GHz, whereas the R&S FSV/FSVA1321.3008K04 model has a maximum frequency of 4 GHz.
●
The bandwidth extension option R&S FSV-B160 (1311.2015.xx) is not available for
the R&S FSV 1307.9002Kxx models. The maximum usable I/Q analysis bandwidth
for these models is 28 MHz, or with option R&S FSV-B70, 40 MHz.
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R&S® FSV-K76/-K77
2 Introduction
Equipped with the firmware application R&S FSV-K76, the R&S FSV/FSVA performs
code domain measurements on base station (downlink) signals according to the 3GPP
standard (Third Generation Partnership Project).
Equipped with the firmware application R&S FSV-K77, the R&S FSV/FSVA performs
code domain measurements on user equipment (uplink) signals according to the 3GPP
standard (Third Generation Partnership Project).
The basic standards are 3GPP TS 25.142 "Base Station Conformance Testing (TDD)",
version V8.1.0, 3GPP TS 25.221 ''Physical channels and mapping of transport channels onto physical channels (TDD)". When TD–SCDMA specifications are mentioned in
the document, this standard is meant.
In addition to the code domain measurements specified in the TD–SCDMA standard,
the firmware application features measurements in the spectral range such as channel
power, adjacent channel power, occupied bandwidth and spectrum emission mask with
predefined settings.
Introduction
Overview of the Firmware Options R&S FSV-K76 and R&S FSV-K77
This section contains all information required for operation of an R&S FSV/FSVA
equipped with Application Firmware R&S FSV-K76 and R&S FSV-K77. It covers operation via menus and the remote control commands for the 3GPP TD-SCDMA BTS and
UE Measurement Application.
To open the TD-SCDMA BTS and UE measurement application
●
Press the MODE key and select "TDS BTS" (R&S FSV-K76) or TDS UE
(R&S FSV-K77) from the softkey menu.
The TD-SCDMA main menu opens. This is identical to the "Measurement" menu
(MEAS key).
Note that you can return to the main menu anytime by pressing either the MEAS key or
the HOME key.
This part of the documentation contains of the following topics:
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3 Instrument Functions
The following chapters describe all functions available with the firmware application in
detail, beginning with some background information on the various measurements.
Channel Characteristics
Depending on the symbol rate of a code channel, it has a different spreading factor
and a different number of symbols per slot. The following table shows the relationships:
Instrument Functions
Spreading Factor
1 704 1408 281.6 2112 422.4 2816 563.2 4224 844.8
2 352 704 140.8 1056 211.2 1408 281.6 2112 422.4
4 176 352 70.4 528 105.6 704 140.8 1056 211.2
8 88 176 35.2 264 52.8 352 70.4 528 105.6
16 44 88 17.6 132 26.4 176 35.2 264 52.8
Symbols /
Slot
QPSK 8PSK 16QAM 64QAM
Bits per
Slot
ksps Bits per
slot
ksps Bits per
slot
ksps Bits per
slot
ksps
The data rates in the table result from the bits per slot referred to a subframe length of
5 ms.
You can select the code channel and the slot to be analyzed with the "Select Channel"
and the "Select Slot" softkeys. For example, select code channel 1.16 (code number 1
for spreading factor 16) and slot 2. Activate the Code Domain Power result display in
one screen and EVM vs Symbol in a second screen. Screen A shows the Code
Domain Power of slot number 2 and selects code channel 1.16, which turns red.
Screen B shows the results of the EVM vs Symbol measurement of code channel 1.16
in slot 2 with 44 corresponding values (derived from the table above).
3.1 Code Domain Analysis............................................................................................... 14
3.1.1 Menu and Softkey Description...................................................................................... 15
3.1.1.1 Softkeys of the Code Domain Analyzer........................................................................ 16
3.1.1.2 Softkeys of the Frequency Menu.................................................................................. 42
3.1.1.3 Softkeys of the Amplitude Menu................................................................................... 43
3.1.1.4 Softkeys of the Auto Set Menu......................................................................................46
3.1.1.5 Softkeys of the Sweep Menu........................................................................................ 48
3.1.1.6 Softkeys of the Trace Menu for CDA Measurements....................................................49
3.1.1.7 Softkeys of the Trigger Menu for CDA Measurements................................................. 50
3.1.1.8 Softkeys of the Input/Output Menu for CDA Measurements......................................... 51
3.2 RF Measurements....................................................................................................... 55
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3.2.1 Signal Channel Power...................................................................................................55
3.2.2 Adjacent Channel Power (CH Power ACLR)................................................................ 56
3.2.3 Spectrum Emission Mask..............................................................................................56
3.2.4 Occupied Bandwidth..................................................................................................... 57
3.2.5 Complementary Cumulative Distribution Function (CCDF)...........................................57
3.2.6 Power vs Time.............................................................................................................. 58
3.2.7 Softkeys and Menus for RF Measurements (K76/K77).................................................58
3.2.7.1 Softkeys of the Measurement Menu............................................................................. 58
3.2.7.2 Softkeys of the Frequency Menu.................................................................................. 88
3.2.7.3 Softkeys of the Span Menu for RF Measurements....................................................... 91
3.2.7.4 Softkeys of the Amplitude Menu for RF Measurements................................................92
3.2.7.5 Softkeys of the Bandwidth Menu...................................................................................97
3.2.7.6 Softkeys of the Sweep Menu...................................................................................... 104
Instrument Functions
Code Domain Analysis
3.2.7.7 Softkeys of the Input/Output Menu for RF Measurements..........................................107
3.3 Further Information...................................................................................................109
3.3.1 Detector Overview.......................................................................................................109
3.3.2 Trace Mode Overview.................................................................................................110
3.3.3 Selecting the Appropriate Filter Type..........................................................................112
3.3.4 List of Available RRC and Channel Filters.................................................................. 112
3.3.5 Ranges and Range Settings....................................................................................... 114
3.3.6 ASCII File Export Format............................................................................................ 115
3.3.7 Format Description of Spectrum Emission Mask XML Files....................................... 116
3.3.8 Provided XML Files for the Spectrum Emission Mask Measurement......................... 121
3.3.9 Fast Spectrum Emission Mask Measurements...........................................................124
3.3.10 Predefined CP/ACLR Standards.................................................................................126
3.3.11 Optimized Settings for CP/ACLR Test Parameters.....................................................127
3.1 Code Domain Analysis
The Code Domain Analyzer provides the following result displays for measurements in
the code domain:
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R&S® FSV-K76/-K77
Result Display Description
Code Domain Power Result display for the Code Domain Power
Composite EVM Error Vector Magnitude on slot level.
Peak Code Domain Error Maximum error between test signal and reference signal of the
Code Domain Error Power Error between test signal and reference signal.
Power vs Symbol Channel power on symbol level.
Channel Power vs Slot Average power of a specific channel over all slots.
Result Summary Summary of results in tabular form.
Channel Table Summary of channel configuration in tabular form.
Channel Constellation Channel constellation diagram.
EVM vs Symbol Error Vector Magnitude on symbol level.
Channel Bitstream Summary of bits in a specific channel.
Instrument Functions
Code Domain Analysis
selected slot.
Composite Constellation Constellation diagram on chip level.
You can display up to four result displays at the same time. Any result can be displayed in either screen. For further details on the display configuration refer to the Dis-
play Configurationsoftkey. Just above the measurement screen(s), the most common
settings and parameters are summarized:
The default settings of the Code Domain Analyzer are summarized in the Settings
Overview dialog box. There you can also reset the instrument to its default values by
pressing the "Set to Default" button.
3.1.1 Menu and Softkey Description
The following chapters describe the menus and softkeys specific to the R&S FSV-76
and 77 options for CDA measurements.
The "Bandwidth", "Span" and "Marker" menus are not available for CDA measurements.
All menus not described here are the same as for the base unit, see the description
there.
Importing and Exporting I/Q Data
As of firmware version 1.60, I/Q data can be imported from a file for processing in
R&S FSV-K76/-K77, and captured I/Q data can be stored to a file ("IQ Import"/"IQ
Export" softkeys in the "Save/Rcl" menu). For details see the base unit description.
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3.1.1.1 Softkeys of the Code Domain Analyzer........................................................................ 16
3.1.1.2 Softkeys of the Frequency Menu.................................................................................. 42
3.1.1.3 Softkeys of the Amplitude Menu................................................................................... 43
3.1.1.4 Softkeys of the Auto Set Menu......................................................................................46
3.1.1.5 Softkeys of the Sweep Menu........................................................................................ 48
3.1.1.6 Softkeys of the Trace Menu for CDA Measurements....................................................49
3.1.1.7 Softkeys of the Trigger Menu for CDA Measurements................................................. 50
3.1.1.8 Softkeys of the Input/Output Menu for CDA Measurements......................................... 51
Instrument Functions
Code Domain Analysis
3.1.1.1 Softkeys of the Code Domain Analyzer
The following chapter describes all softkeys available in the "Code Domain Analyzer"
menu of the TD-SCDMA BTS and UE measurement applications.
You can also access the main menu using the MEAS CONFIG hardkey.
Settings Overview......................................................................................................... 17
Frontend Settings..........................................................................................................18
└ Center............................................................................................................. 18
└ Frequency Offset............................................................................................ 19
└ Ref Level.........................................................................................................19
└ Ref Level Offset.............................................................................................. 19
└ Preamp On/Off................................................................................................19
└ Adjust Ref Lvl..................................................................................................19
IQ-Capture Settings...................................................................................................... 20
└ Invert Q........................................................................................................... 20
└ Capture Length............................................................................................... 20
└ Set Count........................................................................................................20
└ Set to Analyze.................................................................................................21
└ Trigger Source Free Run................................................................................ 21
└ Trigger Source External..................................................................................21
└ Trigger Polarity................................................................................................21
└ Trigger Offset..................................................................................................21
Sync Settings................................................................................................................ 22
└ Scrambling Code............................................................................................ 23
└ SYNC-UL Code (uplink (K77) only)................................................................ 23
└ MA Shift Cells/No. of Users............................................................................ 23
└ Time Reference (downlink, K76).....................................................................24
└ Time Reference (uplink, K77)......................................................................... 24
└ Sync To (downlink, K76).................................................................................24
└ Sync To (uplink, K77)......................................................................................24
└ Rotate code channel to associated midamble................................................ 25
Channel Table Settings.................................................................................................25
└ Max Modulation...............................................................................................25
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Result Settings..............................................................................................................28
Show DwPTS Results (BTS mode)...............................................................................30
Show UpPTS Results (UE mode)................................................................................. 30
Display Configuration....................................................................................................30
Select Ch Slot............................................................................................................... 42
Adjust Ref Lvl................................................................................................................42
Instrument Functions
Code Domain Analysis
└ Channel Search Mode.................................................................................... 25
└ Inactive Channel Threshold............................................................................ 26
└ Channel Tables...............................................................................................26
└ New / Copy / Edit............................................................................................ 26
└ Add Channel.........................................................................................27
└ Delete Channel.....................................................................................28
└ Meas.....................................................................................................28
└ Select Slot.............................................................................................28
└ Sort Midamble.......................................................................................28
└ Sort Code..............................................................................................28
└ Reload.................................................................................................. 28
└ Save......................................................................................................28
└ Delete..............................................................................................................28
└ Slot Number....................................................................................................29
└ Channel (Code) Number.................................................................................29
└ Code Power.................................................................................................... 29
└ Normalize........................................................................................................29
└ Channel Table Sort Order...............................................................................30
└ Code Domain Power.......................................................................................31
└ Composite EVM..............................................................................................32
└ Peak Code Domain Error................................................................................33
└ Code Domain Error.........................................................................................33
└ Power vs Symbol............................................................................................ 34
└ Channel Power vs Slot....................................................................................34
└ Result Summary............................................................................................. 35
└ Result Summary (Set: #)...................................................................... 35
└ DwPTS Results / UpPTS Results.........................................................36
└ Slot Result (Slot: #)...............................................................................36
└ Channel Result (Channel: #)................................................................ 37
└ Channel Table.................................................................................................37
└ Channel Constellation.....................................................................................38
└ EVM vs Symbol...............................................................................................39
└ Channel Bitstream.......................................................................................... 39
└ Composite Constellation.................................................................................40
└ Mag Error vs Chip...........................................................................................40
└ Phase Error vs Chip........................................................................................40
└ Symbol Magnitude Error................................................................................. 41
└ Symbol Phase Error........................................................................................41
Settings Overview
This softkey opens the "Settings Overview" dialog box that visualizes the data flow of
the Code Domain Analyzer and summarizes all of the current settings. In addition, you
can change the current settings via this dialog box.
17Operating Manual 1176.7603.02 ─ 06
R&S® FSV-K76/-K77
Instrument Functions
Code Domain Analysis
To change the settings press one of the buttons on the touchscreen.
Frontend Settings
This softkey opens the "Frontend Settings" dialog box to modify the following parameters:
Center ← Frontend Settings
Opens an edit dialog box to enter the center frequency. The allowed range of values
for the center frequency depends on the frequency span.
span > 0: span
min
/2 ≤ f
center
≤ f
max
– span
min
/2
18Operating Manual 1176.7603.02 ─ 06
R&S® FSV-K76/-K77
Instrument Functions
Code Domain Analysis
span = 0: 0 Hz ≤ f
f
and span
max
min
≤ f
center
max
are specified in the data sheet.
If the bandwidth extension option R&S FSV-B160 is active, center frequencies above
7 GHz are not available.
Remote command:
[SENSe:]FREQuency:CENTer on page 214
Frequency Offset ← Frontend Settings
Opens an edit dialog box to enter a frequency offset that shifts the displayed frequency
range by the specified offset.
The softkey indicates the current frequency offset. The allowed values range from
-100 GHz to 100 GHz. The default setting is 0 Hz.
Remote command:
[SENSe:]FREQuency:OFFSet on page 216
Ref Level ← Frontend Settings
Opens an edit dialog box to enter the reference level in the current unit (dBm, dBµV,
etc).
The reference level is the maximum value the AD converter can handle without distortion of the measured value. Signal levels above this value will not be measured correctly, which is indicated by the "IFOVL" status display.
Remote command:
DISPlay[:WINDow<n>]:TRACe<t>:Y[:SCALe]:RLEVel on page 185
Ref Level Offset ← Frontend Settings
Opens an edit dialog box to enter the arithmetic level offset. This offset is added to the
measured level irrespective of the selected unit. The scaling of the y-axis is changed
accordingly. The setting range is ±200 dB in 0.1 dB steps.
Remote command:
DISPlay[:WINDow<n>]:TRACe<t>:Y[:SCALe]:RLEVel:OFFSet on page 186
Preamp On/Off ← Frontend Settings
Switches the preamplifier on and off.
If option R&S FSV-B22 is installed, the preamplifier is only active below 7 GHz.
If option R&S FSV-B24 is installed, the preamplifier is active for all frequencies.
This function is not available for input from the R&S Digital I/Q Interface (option
R&S FSV-B17).
Remote command:
INPut:GAIN:STATe on page 247
Adjust Ref Lvl ← Frontend Settings
Defines the optimal reference level for the current measurement automatically.
19Operating Manual 1176.7603.02 ─ 06
R&S® FSV-K76/-K77
Remote command:
[SENSe:]ADJust:LEVel on page 198
IQ-Capture Settings
This softkey opens the "IQ-Capture Settings" dialog box.
Instrument Functions
Code Domain Analysis
Invert Q ← IQ-Capture Settings
Inverts the sign of the signal's Q-component. The default setting is OFF.
Remote command:
[SENSe:]CDPower:QINVert on page 191
Capture Length ← IQ-Capture Settings
Sets the number of slots you want to analyze. The input value is always in multiples of
the slots. The default value is 7. The maximum capture length is 63.
The "Capture Length" field is available if Set Count equals 1.
Remote command:
[SENSe:]CDPower:IQLength on page 189
Set Count ← IQ-Capture Settings
Defines the number of consecutive sets to be stored in the instrument's IQ memory.
One set consists of 63 slots. The R&S FSV/FSVA can capture up to 6300 slots in a
single sweep, i.e. the possible value range is from 1 to 100 sets.
The default setting is 1. In that case you can still define the number of slots. In case
you want to capture more than one set, the capture length is always 63. The R&S FSV/
FSVA automatically sets the capture length to 63 and the Capture Length field is not
available for modification.
20Operating Manual 1176.7603.02 ─ 06
R&S® FSV-K76/-K77
Remote command:
[SENSe:]CDPower:SET:COUNt on page 192
Set to Analyze ← IQ-Capture Settings
Selects a specific set for further analysis. The value range depends on the "IQ-Capture
Settings" on page 20 and is between 0 and [Set Count-1].
Remote command:
[SENSe:]CDPower:SET on page 192
Trigger Source Free Run ← IQ-Capture Settings
The start of a sweep is not triggered. Once a measurement is completed, another is
started immediately.
This softkey is available for code domain measurements.
Remote command:
TRIG:SOUR IMM, see TRIGger<n>[:SEQuence]:SOURce on page 251
Trigger Source External ← IQ-Capture Settings
Defines triggering via a TTL signal at the "EXT TRIG/GATE IN" input connector on the
rear panel.
An edit dialog box is displayed to define the external trigger level.
This softkey is available for code domain measurements.
Remote command:
TRIG:SOUR EXT, see TRIGger<n>[:SEQuence]:SOURce on page 251
Instrument Functions
Code Domain Analysis
Trigger Polarity ← IQ-Capture Settings
Sets the polarity of the trigger source.
The sweep starts after a positive or negative edge of the trigger signal. The default set-
ting is "Pos". The setting applies to all modes with the exception of the "Free Run" and
"Time" mode.
This softkey is available for code domain measurements.
"Pos"
"Neg"
Remote command:
TRIGger<n>[:SEQuence]:SLOPe on page 250
[SENSe:]SWEep:EGATe:POLarity on page 229
Trigger Offset ← IQ-Capture Settings
Opens an edit dialog box to enter the time offset between the trigger signal and the
start of the sweep.
Level triggering: the sweep is stopped by the logic "0" signal and
restarted by the logical "1" signal after the gate delay time has
elapsed.
Edge triggering: the sweep is continued on a "0" to "1" transition for
the gate length duration after the gate delay time has elapsed.
21Operating Manual 1176.7603.02 ─ 06
R&S® FSV-K76/-K77
offset > 0: Start of the sweep is delayed
offset < 0: Sweep starts earlier (pre-trigger)
In the "External" or "IF Power" trigger mode, a common input signal is used for both
trigger and gate. Therefore, changes to the gate delay will affect the trigger delay (trigger offset) as well.
Remote command:
TRIGger<n>[:SEQuence]:HOLDoff[:TIME] on page 250
Instrument Functions
Code Domain Analysis
Only possible for span = 0 (e.g. I/Q Analyzer mode) and gated trigger
switched off
Maximum allowed range limited by the sweep time:
pretrigger
When using the R&S Digital I/Q Interface (R&S FSV-B17) with I/Q Analyzer mode, the maximum range is limited by the number of pretrigger
samples.
See the R&S Digital I/Q Interface(R&S FSV-B17) description in the base
unit.
= sweep time
max
Sync Settings
This softkey opens the "Synchronization Settings" dialog box.
Figure 3-1: Syncronization Settings for downlink measurements (K76)
22Operating Manual 1176.7603.02 ─ 06
R&S® FSV-K76/-K77
Figure 3-2: Syncronization Settings for uplink measurements (K77)
Instrument Functions
Code Domain Analysis
Scrambling Code ← Sync Settings
Sets the Scrambling Code of the base station. Possible values are between 0 and 127
and have to be entered as decimals.
Remote command:
[SENSe:]CDPower:SCODe on page 192
SYNC-UL Code (uplink (K77) only) ← Sync Settings
Defines the code used for synchronization on the UpPTS.
If the UpPTS is used as a time reference (see "Time Reference (uplink, K77)"
on page 24), you must define the SYNC-UL code to be used. This code depends on
the used scrambling code as indicated in the following table.
Table 3-1: Possible SYNC-UL codes depending on scrambling code
Code Group Scrambling Code Sync -UL Code
Group 1 0 to 3 0 to 7
Group 2 4 to 7 8 to 15
... ... ...
Group 32 124 to 127 248 to 255
Remote command:
[SENSe:]CDPower:SULC on page 194
MA Shift Cells/No. of Users ← Sync Settings
Sets the maximum number of usable midamble shifts of the base station. Possible values are in the range from 2 to 16 in steps of 2 midamble shifts.
If you use a predefined channel table, this value is replaced by that of the channel
table.
23Operating Manual 1176.7603.02 ─ 06
R&S® FSV-K76/-K77
Remote command:
[SENSe:]CDPower:MSHift on page 190
Time Reference (downlink, K76) ← Sync Settings
Defines which slot is used as a time reference for synchronization.
"DwPTS"
"Slot 0"
Remote command:
[SENSe:]CDPower:TREF on page 195
Time Reference (uplink, K77) ← Sync Settings
Defines which slot is used as a time reference for synchronization.
"UpPTS"
"Slot 1"
Remote command:
[SENSe:]CDPower:TREF on page 195
Instrument Functions
Code Domain Analysis
Uses the Downlink Pilot Time Slot (DwPTS) as a time reference
Uses slot 0 as a time reference.
Uses the Uplink Pilot Time Slot (UpPTS) as a time reference. You
must define the SYNC-UL Code (uplink (K77) only) to be used.
Uses slot 1 as a time reference.
Sync To (downlink, K76) ← Sync Settings
Toggles the phase reference.
"P-CCPCH"
"Midamble"
Remote command:
[SENSe:]CDPower:STSLot on page 193
Sync To (uplink, K77) ← Sync Settings
Toggles the phase reference. For a successful synchronization, the selected slot must
contain at least one data channel with sufficient power.
"Code Channel"
"Midamble"
By default, the R&S FSV-K76 determines the phase reference for all
downlink data slots from the downlink pilot channel (P-CCPCH) in slot
0. For some measurements like beamforming or repeater measurements, it might be necessary to apply different phase offsets to each
time slot. In these timeslots, using the P-CCPCH as phase reference
leads to rotated constellation diagrams and bad EVM results.
The R&S FSV-K76 determines the phase reference from the midamble of the selected slot. With this method, the data slots can be phase
rotated to each other and a degradation of the EVM results can be
avoided. For a successful synchronization, the selected slot must
contain at least one data channel with sufficient power.
The R&S FSV-K77 determines the phase reference from the code
channel of the selected slot. This is useful when synchronization fails
in bad SNR environments. For code channel synchronization, at least
one of the code channels must be QPSK or 8PSK modulated.
By default, the R&S FSV-K77 determines the phase reference from
the midamble of the selected slot. With this method, the data slots
can be phase rotated to each other and a degradation of the EVM
results can be avoided.
24Operating Manual 1176.7603.02 ─ 06
R&S® FSV-K76/-K77
Remote command:
[SENSe:]CDPower:STSLot:MODE on page 193
Rotate code channel to associated midamble ← Sync Settings
By default, the R&S FSV-K76/77 determines one phase reference for all midambles
and code channels of a data slot. If this option is selected, phase rotations between the
code channels are allowed. Each code channel gets its own phase reference from the
associated midamble according to section AA.2 of the standard document 3GPP TS
25.221. If the associated midamble is missing, the common phase reference is used
for this code channel.
Remote command:
[SENSe:]CDPower:STSLot:ROTate on page 194
Channel Table Settings
Opens the "Channel Table Settings" dialog box and the corresponding submenu.
Max Modulation ← Channel Table Settings
Defines the highest modulation to be considered in the automatic channel search. In
low SNR environments it may be necessary to limit the channel search to lower modulations than 64QAM. The following types are available:
●
●
●
●
Remote command:
[SENSe:]CDPower:MMAX on page 190
Instrument Functions
Code Domain Analysis
QPSK
8PSK
16QAM
64QAM
Channel Search Mode ← Channel Table Settings
Defines the kind of channel table used for the measurement.
Predefined channel tables are a way to customize measurements. The RECENT chan-
nel table contains the last configuration used before switching from Auto Search to
Predefined. In addition, new channel tables can be created and saved to be used in
measurements.
"Auto Search"
"Predefined"
Remote command:
CONFigure:CDPower[:BTS]:CTABle[:STATe] on page 175
CONFigure:CDPower[:BTS]:CTABle:SELect on page 179
The Auto Search mode scans the whole code domain, including all
permissible symbol rates and channel numbers, for active channels.
The automatic search provides an overview of the channels contained in the signal. If channels are not detected as being active,
change the Inactive Channel Threshold or select the Predefined
channel search type.
Performs the code domain measurement on the basis of the active
predefined channel table. All channels of a channel table are
assumed to be active. For further details also refer to the Inactive
Channel Threshold field and the "Predefined Channel Tables"
25Operating Manual 1176.7603.02 ─ 06
R&S® FSV-K76/-K77
Inactive Channel Threshold ← Channel Table Settings
Defines the minimum power which a single channel must have compared to the total
signal in order to be recognized as an active channel. Channels below the specified
threshold are regarded as "inactive". The parameter is available in the Auto Search
mode of the "Channel Table Settings" dialog box. The default value is -40 dB. With this
value all channels with signals such as the TD-SCDMA test models are located by the
Code Domain Power analysis. Decrease the Inactive Channel Threshold value, if not
all channels contained in the signal are detected.
Remote command:
[SENSe:]CDPower:ICThreshold on page 189
Channel Tables ← Channel Table Settings
In this field a list of the available channel tables is shown. To activate a predefined
channel table, select the table name by using either the touchscreen or the the cursor
keys and pressing the ENTER key. The selected channel table is the basis for future
measurements (until you choose another or select Auto Search).
An active channel table must completely describe the supplied signal. Using the softkeys, customized channel tables can be defined or existing channel tables can be
modified.
Remote command:
CONFigure:CDPower[:BTS]:CTABle:CATalog? on page 176
Instrument Functions
Code Domain Analysis
New / Copy / Edit ← Channel Table Settings
All three softkeys open a dialog box with the same layout and the same corresponding
submenu.
The "New" softkey opens the "New Channel Table" dialog box. In this dialog you can
build a new channel table. All fields are empty.
The "Copy" softkey copies all elements of the selected channel table and opens the
"Copy Channel Table" dialog box. The name of the new channel table is set to 'Copy of
<SourceChannelTableName>'.
The "Edit" softkey opens the "Edit Channel Table" dialog box and the corresponding
menu. In this dialog box you can edit an existing channel table.
Note that changes are never saved automatically. Remember to save your channel
tables before ending the application.
Note: Prerequisite. The code domain analyzer requires an active channel 1.16 (e.g. P–
CCPCH1) and a valid midamble in slot 0 for synchronization. The parameters "Scrambling Code" and "MA Shifts Cell" must comply with the base station.
The dialog box contains the following items. You can modify the white fields as you
like. The grey fields can not be modified; these are automatically calculated by the
R&S FSV/FSVA:
Item Description
Name Enter the name of the selected channel table, which will be saved under
<name>.xml. The name is case sensitive and may not contain spaces. It must
be a valid MS Windows file name. Note that the old channel table file is not
deleted.
Description Enter further information about the channel table.
26Operating Manual 1176.7603.02 ─ 06
R&S® FSV-K76/-K77
Item Description
MA Shift Cells Sets the maximum number of usable midamble shifts of the base station.
Channel Type Select one of the channel types from the dropdown menu.
Walsh Ch.SF Enter the Channel Number (Ch) and Spreading Factor (SF). For some channel
Data Rate / kbps Display of the data rate.
Modulation Enter the modulation type for the channel.
Midamble Shift Shift of the associated midamble if a common or default midamble allocation is
State Indicates whether a channel is active or inactive.
Domain Conflict A red bullet indicates if there's a conflict of any sorts between two or more
Remote command:
CONFigure:CDPower[:BTS]:CTABle:NAME
CONFigure:CDPower[:BTS]:CTABle:COPY
Instrument Functions
Code Domain Analysis
types the possible values are limited or preset (e.g. F-PICH, F-TDPICH and FPDCH).
detected.
channels (e.g. two conflicting channel codes).
Add Channel ← New / Copy / Edit ← Channel Table Settings
Inserts a new channel below the one selected. For a description of the parameters of
the channel refer to the Channel Table Settings softkey. The default values for a new
channel are:
Channel Type Midamble
Walsh Ch.SF 2.64
Data Rate / kbps 19.2 (automatically calculated)
Modulation QPSK
Midamble Shift ---
State Off
Domain Conflict No (automatically determined)
To change the channel type use the dropdown menu that opens when selecting / highlighting the "Channel Type" field that you want to change. Modulation settings are
changed in the same way.
To change the channel number, type another channel number in the form 'ChannelNumber.SpreadingFactor' or just the code number in the respective field. Confirm the
change with the ENTER key.
To activate or deactivate a channel, select the "State" field and confirm with the
ENTER key.
The R&S FSV/FSVA automatically checks for conflicts between two active channels.
27Operating Manual 1176.7603.02 ─ 06
R&S® FSV-K76/-K77
Remote command:
CONFigure:CDPower[:BTS]:CTABle:DATA on page 177
Delete Channel ← New / Copy / Edit ← Channel Table Settings
Deletes the selected channel without further notice.
Meas ← New / Copy / Edit ← Channel Table Settings
Initiates a measurement in "Channel Search Mode" on page 25 mode. The measurement results are applied to the active channel table. The active channel table is overwritten without further notice.
The softkey is only available if you have selected the Auto Search mode in the "Channel Table Settings" dialog box.
Select Slot ← New / Copy / Edit ← Channel Table Settings
Selects the slot for which the channel table is valid.
Sort Midamble ← New / Copy / Edit ← Channel Table Settings
Sets the Result Settings to midamble order.
This softkey is available for the 3GPP TD-SCDMA BTS Measurement Application.
Instrument Functions
Code Domain Analysis
Sort Code ← New / Copy / Edit ← Channel Table Settings
Sets the Result Settings to Code order.
Reload ← New / Copy / Edit ← Channel Table Settings
Reloads the original content of the copied channel table. This softkey is available for
the "New Channel Table" dialog box and the "Edit Channel Table" dialog box.
Save ← New / Copy / Edit ← Channel Table Settings
Saves the table under its specified name in the xml-format. If you edit a channel table
and want to keep the original channel table, change the name of the edited channel
table before saving it.
Delete ← Channel Table Settings
Deletes the selected channel table. The currently active channel table cannot be
deleted.
Result Settings
This softkey opens the "Result Settings" dialog box
28Operating Manual 1176.7603.02 ─ 06
R&S® FSV-K76/-K77
Instrument Functions
Code Domain Analysis
Slot Number ← Result Settings
Selects the slot number for further evaluation. In result displays that evaluate specific
slot, the currently selected slot is highlighted red.
The number of measured slots depends on the IQ-Capture Settings defined in the IQ
Capture Settings dialog box. Therefore the range is (0 to Capture Length-1).
Remote command:
CDP:SLOT 6
Channel (Code) Number ← Result Settings
Selects the channel or code number for further evaluation. In result displays that evaluate specific channels, the currently selected channel is highlighted red.
The number of codes depends on the spreading factor. Therefore it is between 1 and
16.
Remote command:
[SENSe:]CDPower:SLOT on page 193
Code Power ← Result Settings
Selects the y-axis scaling for the Code Domain Power result display.
●
Absolute scaling shows the code power in dBm.
●
Relative scaling shows the code power in dB.
Remote command:
CALCulate<n>:FEED on page 134
Normalize ← Result Settings
Activate this parameter to eliminate the DC offset from the signal. By default, the
parameter is deactivated.
29Operating Manual 1176.7603.02 ─ 06
R&S® FSV-K76/-K77
Remote command:
[SENSe:]CDPower:NORMalize on page 191
Channel Table Sort Order ← Result Settings
You can sort channels in the Channel Table result display in two ways:
●
●
Remote command:
CONFigure:CDPower[:BTS]:CTABle:ORDer on page 178
Show DwPTS Results (BTS mode)
Displays additional information on the "Downlink Pilot Time Slot" (DwPTS) in the
Result Summary.
Remote command:
[SENSe:]CDPower:PTS on page 191
Instrument Functions
Code Domain Analysis
Code Order: first, all midambles are listed, then all control channels and last all
data channels.
Midamble Order: allocates all control and data channels to the midambles they
belong to and then sorts the midambles in ascending order.
Show UpPTS Results (UE mode)
Displays additional information on the "Uplink Pilot Time Slot" (UpPTS) in the Result
Summary.
Remote command:
[SENSe:]CDPower:PTS on page 191
Display Configuration
This softkey opens the "Display Config" dialog box to select the result display. In the
Code Domain Analyzer, the results are displayed in up to four screens. Any result can
be displayed in either screen.
30Operating Manual 1176.7603.02 ─ 06
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