R&S® FSV-K76/-K77
3GPP TD-SCDMA BTS and UE
Measurement Application
Operating Manual
(;ÚÚ32)
1176.7603.02 ─ 04.1
Operating Manual
Test & Measurement
This manual describes the following options:
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R&SFSV-K76 (1310.8603.02)
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R&S FSV-K77 (1310.8655.02)
The contents of this manual correspond to the following R&S®FSVR models with firmware version 2.23 or
higher:
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R&S®FSVR7 (1311.0006K7)
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R&S®FSVR13 (1311.0006K13)
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R&S®FSVR30 (1311.0006K30)
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R&S®FSVR40 (1311.0006K40)
The software contained in this product makes use of several valuable open source software packages. For information, see the
"Open Source Acknowledgement" on the user documentation CD-ROM (included in delivery).
Rohde & Schwarz would like to thank the open source community for their valuable contribution to embedded computing.
The user documentation for the R&SFSVR is divided as follows:
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Quick Start Guide
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Operating Manuals for base unit and options
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Service Manual
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Online Help
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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 1Introduction, General information
Chapter 2Front and Rear Panel
Chapter 3Preparing for Use
Chapter 4Firmware Update and Installation of Firmware Options
Chapter 5Basic Operations
Chapter 6Basic Measurement Examples
Chapter 7Brief Introduction to Remote Control
AppendixPrinter Interface
AppendixLAN 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 FSVR 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.
7Operating Manual 1176.7603.02 ─ 04.1
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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
to the data sheets. Basic information on operating the R&S FSVR is not included in the
option manuals.
The following Operating Manuals are available for the R&S FSVR:
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Preface
Documentation Overview
R&S FSVR base unit; in addition:
–R&S FSV-K7S Stereo FM Measurements
–R&S FSV-K9 Power Sensor Support
–R&S FSV-K14 Spectrogram Measurement
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
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 FSVR by replacing modules. The manual includes the following
chapters:
Chapter 1Performance Test
Chapter 2Adjustment
Chapter 3Repair
Chapter 4Software Update / Installing Options
Chapter 5Documents
Online Help
The online help contains context-specific help on operating the R&S FSVR and all
available options. It describes both manual and remote operation. The online help is
8Operating Manual 1176.7603.02 ─ 04.1
R&S® FSV-K76/-K77
installed on the R&S FSVR by default, and is also available as an executable .chm file
on the CD delivered with the instrument.
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
1.2Conventions Used in the Documentation
1.2.1Typographical Conventions
The following text markers are used throughout this documentation:
ConventionDescription
"Graphical user interface elements"
KEYSKey names are written in capital letters.
File names, commands,
program code
InputInput to be entered by the user is displayed in italics.
LinksLinks 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.
1.2.2Conventions 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.
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Preface
How to Use the Help System
1.2.3Notes 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.
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.
1.3How 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
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"View" - contains a specific help topic
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"Index" - contains index entries to search for help topics
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"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
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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.
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To display a help topic, press the ENTER key. The "View" tab with the corresponding help topic is displayed.
10Operating Manual 1176.7603.02 ─ 04.1
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Navigating in the help topics
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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
Preface
How to Use the Help System
To change to the next tab, press the tab on the touchscreen.
To scroll through a page, use the rotary knob or the UP ARROW and DOWN
ARROW keys.
To jump to the linked topic, press the link text on the touchscreen.
these characters are displayed.
the rotary knob.
5. Press the ENTER key to display the help topic.
The "View" tab with the corresponding help topic is displayed.
Changing the zoom
1. Change to the "Zoom" tab.
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.
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2Introduction
Equipped with the firmware application R&S FSV-K76, the R&S FSVR performs code
domain measurements on forward link signals according to the 3GPP standard (Third
Generation Partnership Project).
Equipped with the firmware application R&S FSV-K77, the R&S FSVR performs code
domain measurements on downlink 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 FSVR 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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3Instrument 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
17041408281.62112422.42816563.24224844.8
2352704140.81056211.21408281.62112422.4
417635270.4528105.6704140.81056211.2
88817635.226452.835270.4528105.6
16448817.613226.417635.226452.8
Symbols /
Slot
QPSK8PSK16QAM64QAM
Bits per
Slot
kspsBits per
slot
kspsBits per
slot
kspsBits 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).
EVM vs SymbolError Vector Magnitude on symbol level.
Channel BitstreamSummary of bits in a specific channel.
Composite ConstellationConstellation 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.
3.1.1Menu 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.
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Importing and Exporting I/Q Data
As of firmware version 1.63, 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.
3.1.1.1Softkeys of the Code Domain Analyzer........................................................................ 16
3.1.1.2Softkeys of the Frequency Menu.................................................................................. 40
3.1.1.3Softkeys of the Amplitude Menu................................................................................... 41
3.1.1.4Softkeys of the Auto Set Menu......................................................................................44
3.1.1.5Softkeys of the Sweep Menu........................................................................................ 45
3.1.1.6Softkeys of the Trace Menu for CDA Measurements....................................................46
3.1.1.7Softkeys of the Trigger Menu for CDA Measurements................................................. 47
3.1.1.8Softkeys of the Input/Output Menu for CDA Measurements......................................... 49
Instrument Functions
Code Domain Analysis
3.1.1.1Softkeys 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.
└ Mag Error vs Chip...........................................................................................38
└ Phase Error vs Chip........................................................................................38
└ Symbol Magnitude Error................................................................................. 38
└ Symbol Phase Error........................................................................................39
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.
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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
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Instrument Functions
Code Domain Analysis
span = 0: 0 Hz ≤ f
f
and span
max
min
≤ f
center
max
are specified in the data sheet.
Remote command:
[SENSe:]FREQuency:CENTer on page 221
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 222
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 193
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 194
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 254
Adjust Ref Lvl ← Frontend Settings
Defines the optimal reference level for the current measurement automatically.
Remote command:
[SENSe:]ADJust:LEVel on page 205
IQ-Capture Settings
This softkey opens the "IQ-Capture Settings" dialog box.
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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 199
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 197
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 FSVR 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 FSVR automatically sets the capture length to 63 and the Capture Length field is
not available for modification.
Remote command:
[SENSe:]CDPower:SET:COUNt on page 200
Set to Analyze ← IQ-Capture Settings
Selects a specific set for further analysis. The value range depends on the "IQ-Capture
Settings"on page 19 and is between 0 and [Set Count-1].
Remote command:
[SENSe:]CDPower:SET on page 199
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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 257
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 257
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 257
[SENSe:]SWEep:EGATe:POLarity on page 236
Instrument Functions
Code Domain Analysis
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.
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.
offset > 0:Start of the sweep is delayed
offset < 0:Sweep starts earlier (pre-trigger)
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
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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 256
Sync Settings
This softkey opens the "Synchronization Settings" dialog box.
Instrument Functions
Code Domain Analysis
Fig. 3-1: Syncronization Settings for downlink measurements (K76)
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 199
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.
Remote command:
[SENSe:]CDPower:MSHift on page 198
Sync To (downlink, K76) ← Sync Settings
Toggles the phase reference.
"P-CCPCH"
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.
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Instrument Functions
Code Domain Analysis
"Midamble"
Remote command:
[SENSe:]CDPower:STSLot on page 200
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"
Remote command:
[SENSe:]CDPower:STSLot:MODE on page 201
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.
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 201
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:
●
QPSK
●
8PSK
●
16QAM
●
64QAM
Remote command:
[SENSe:]CDPower:MMAX on page 198
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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 183
CONFigure:CDPower[:BTS]:CTABle:SELect on page 187
Instrument Functions
Code Domain Analysis
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"
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 197
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 184
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.
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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 FSVR:
ItemDescription
NameEnter the name of the selected channel table, which will be saved under
Instrument Functions
Code Domain Analysis
<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.
DescriptionEnter further information about the channel table.
MA Shift CellsSets the maximum number of usable midamble shifts of the base station.
Channel TypeSelect one of the channel types from the dropdown menu.
Walsh Ch.SFEnter the Channel Number (Ch) and Spreading Factor (SF). For some channel
types the possible values are limited or preset (e.g. F-PICH, F-TDPICH and FPDCH).
Data Rate / kbpsDisplay of the data rate.
ModulationEnter the modulation type for the channel.
Midamble ShiftShift of the associated midamble if a common or default midamble allocation is
detected.
StateIndicates whether a channel is active or inactive.
Domain ConflictA red bullet indicates if there's a conflict of any sorts between two or more
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 TypeMidamble
Walsh Ch.SF2.64
Data Rate / kbps19.2 (automatically calculated)
25Operating Manual 1176.7603.02 ─ 04.1
R&S® FSV-K76/-K77
ModulationQPSK
Midamble Shift---
StateOff
Domain ConflictNo (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 FSVR automatically checks for conflicts between two active channels.
Remote command:
Deletes the selected channel without further notice.
Meas ← New / Copy / Edit ← Channel Table Settings
Initiates a measurement in "Channel Search Mode"on page 24 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.
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.
26Operating Manual 1176.7603.02 ─ 04.1
R&S® FSV-K76/-K77
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
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 200
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 136
27Operating Manual 1176.7603.02 ─ 04.1
R&S® FSV-K76/-K77
Normalize ← Result Settings
Activate this parameter to eliminate the DC offset from the signal. By default, the
parameter is deactivated.
Remote command:
[SENSe:]CDPower:NORMalize on page 198
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 186
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.
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.
The dialog box contains the following elements:
28Operating Manual 1176.7603.02 ─ 04.1
R&S® FSV-K76/-K77
ItemDescription
Screen A/B/C/D tabChoose the screen to be configured.
Screen A/B/C/D activeActivate or deactivate one of the four available mea-
Result diagram for Screen A/B/C/DChoose the result diagram for each screen. Find a
Screen FocusThe currently active screen is indicated by a blue
Code Domain Power ← Display Configuration
Starts the Code Domain Power (CDP) result display. By default the scaling is relative.
This result display determines the power of all codes of a specific channel and plots it
in a diagram. The x-axis represents the code number. The number of codes depends
on the channel type. Each bar in the diagram represents one code, up to a maximum
of 16 (the maximum spreading factor). Codes are always sorted in ascending order
and projected to a spreading factor of 16.
The y-axis is a logarithmic level axis that shows the power of each code.
The measurement evaluates the total signal of a specific channel over a single slot.
Configure this result display via the Result Settings dialog box.
Instrument Functions
Code Domain Analysis
surement screens via this check box. The size of the
screens depends on the number of active screens.
For example, if four screens are active, each screen
takes up a quarter of the display size.
short description of each result display below.
frame. Trace and marker settings can only be
changed for the active screen. Changing the focus
and screen size is just like in the base unit
The power values of the active and inactive channels are displayed in different colors:
●
Yellow: active channel
●
Cyan: inactive channel
●
Red: selected channel; if a channel is made up of more than one code, all codes
that belong to the channel turn red.
When working with predefined channel tables, every code is regarded as active.
It is possible to select more detailed result displays for inactive codes, but the results
for these are not valid.
Remote command:
CALCulate<n>:FEED on page 136
CALCulate<n>:FEED on page 136
29Operating Manual 1176.7603.02 ─ 04.1
R&S® FSV-K76/-K77
Composite EVM ← Display Configuration
Starts the Composite EVM (Error Vector Magnitude) result display.
This result display is for measuring the modulation accuracy. It determines the error
vector magnitude (EVM) over the total signal. The EVM is the root of the ratio of the
mean error power to the power of an ideally generated reference signal. To calculate
the mean error power, the root mean square average (of the real and imaginary parts
of the signal) is used. The EVM is shown in %.
The diagram consists of a composite EVM for each captured slot.
The measurement evaluates the total signal over the entire period of observation. The
selected slot turns red.
Instrument Functions
Code Domain Analysis
Only the channels detected as being active are used to generate the ideal reference
signal. If a channel is not detected as being active, e.g. on account of low power, the
difference between the test signal and the reference signal and therefore the composite EVM is very large.
Distortions also occur if unassigned codes are wrongly given the status of "active channel". To obtain reliable measurement results, select an adequate channel threshold.
Remote command:
CALCulate<n>:FEED on page 136
Peak Code Domain Error ← Display Configuration
Starts the Peak Code Domain Error result display. The Peak Code Domain Error is
defined as the maximum value for the Code Domain Error for all codes. That means
that in this result display the "Code Domain Error"on page 31 is projected onto the
code domain at a specific base spreading factor. In the diagram, each bar of the x-axis
represents one captured slot. The selected slot turns red. The y-axis represents the
error power.
The measurement evaluates the total signal over the entire period of observation. The
currently selected slot turns red.
30Operating Manual 1176.7603.02 ─ 04.1
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