Rohde&Schwarz FS-K83 User Manual

Download

Page 1

R&S®FS-K83

Test and Measurement

Software Manual

cdma2000/1xEV–DV Mobil Stations Test

Software Manual

1007.9800.42 – 06

Page 2

Das Softwarehandbuch R&S®FS-K83 beschreibt folgende Modelle:

( R&S®FMU ( R&S®FSG

R&S®FSMR

( ( R&S®FSP ( R&S®FSQ ( R&S®FSU ( R&S®FSUP

© 2012 Rohde & Schwarz GmbH & Co. KG 81671 Munich, Germany Printed in Germany – Änderungen vorbehalten – Daten ohne Genauigkeitsangabe sind unverbindlich. R&S® ist eingetragenes Warenzeichen der Firma Rohde & Schwarz GmbH & Co. KG. Eigennamen sind Warenzeichen der jeweiligen Eigentümer. Die folgenden Abkürzungen werden im Handbuch verwendet:

FS-K83 ist abgekürzt als R&S FS-K83..

R&S

Page 3

&S FS-K83 Table of Contents

Table of Contents

Documentation Overview................................................................... 5

cdma2000 Mobile Station Test Application Firmware R&S FS-K83 6

1 Installing and Enabling the Application Firmware........................... 7

1.1 Installation ....................................................................................................................7

1.2 Enabling ........................................................................................................................7

2 Getting Started.................................................................................... 8

2.1 Generating a cdma2000 reverse link signal with WinIQSIM....................................9

2.2 Default settings in cdma2000 MS operating mode.................................................11

2.3 Measurement 1: Measurement of the signal power ...............................................12

2.4 Measurement 2: Measurement of the spectrum emission mask ..........................13

2.5 Measurement 3: Measurement of the relative code domain power and the

frequency error ...........................................................................................................14

2.6 Setting: Synchronizing the reference frequencies.................................................15

2.7 Setting: Behaviour with deviating center frequency setting.................................15

2.8 Measurement 4: Triggered measurement of the relative code domain power....16

2.9 Setting: Trigger offset ...............................................................................................17

2.10 Measurement 5: Measurement of the composite EVM ..........................................18

2.11 Measurement 6: Measurement of the peak code domain error ............................19

2.12 Measurement 7: Measurement of the RHO factor ..................................................20

3 Test Setup for Mobile Station Tests................................................ 21

3.1 Standard test setup ...................................................................................................21

4 Predefined Channel Tables.............................................................. 23

5 Menu Overview ................................................................................. 25

6 Configuration of cdma2000 Measurements.................................... 28

6.1 Measuring channel power.........................................................................................28

6.2 Measuring adjacent channel power - ACLR............................................................29

6.3 Signal power check – SPECTRUM EM MASK .........................................................39

6.4 Measuring bandwidth occupied by the signal - OCCUPIED BANDWIDTH ..........45

Software Manual 1007.9800.42 - 06 1

Page 4

&S FS-K83 Table of Contents

6.5 Signal statistics..........................................................................................................47

6.6 Code-Domain-Measurements an cdma2000-Signalen ...........................................51

6.6.1 Presentation of analyses - RESULTS..........................................................................54

6.6.2 Measurement configuration - CHAN CONF hotkey.....................................................72

.6.3

6.6.4 Frequency settings – FREQ key..................................................................................83

6.6.5 Span-Einstellungen - Taste SPAN...............................................................................84

6.6.6 Pegel-Einstellung - Taste AMPT..................................................................................85

6.6.7 Marker settings - MKR key ..........................................................................................86

6.6.8 Changing instrument settings- Taste MKR..............................................................87

6.6.9 Marker functions – MKR FCTN key .............................................................................88

6.6.10 Bandwidth setting – BW key ........................................................................................88

6.6.11 Measurement control – SWEEP key ...........................................................................88

6.6.12 Measurement selection – MEAS key...........................................................................88

6.6.13 Trigger settings – TRIG key.........................................................................................89

6.6.14 Trace settings – TRACE key .......................................................................................89

6.6.15 Display lines – LINES key............................................................................................90

6.6.16 Measurement screen settings – DISP key ..................................................................91

6.6.17 Storing and loading of device data – FILE key ............................................................91

6.6.18 Preset of device – PRESET key..................................................................................91

onfiguring the application firmware – SETTINGS.....................................................77

6.6.19 Calibration of device – CAL key...................................................................................91

6.6.20 Setup of device – SETUP key .....................................................................................91

6.6.21 Printing – HCOPY key .................................................................................................91

7 Remote Control Commands ............................................................ 92

7.1 CALCulate:FEED subsystem....................................................................................92

7.2 CALCulate:LIMit:SPECtrum Subsystem .................................................................94

7.3 CALCulate:MARKer - Subsystem.............................................................................96

7.4 CALCulate:PEAKsearch | PSEarch- Subsystem ....................................................98

7.5 CALCulate:STATistics - Subsystem ........................................................................98

7.6 CONFigure:CDPower subsystem...........................................................................100

7.7 INSTrument Subsystem ..........................................................................................107

7.8 SENSe:CDPower Subsystem..................................................................................108

7.9 TRACe subsystem ...................................................................................................117

Software Manual 1007.9800.42 - 06 2

Page 5

&S FS-K83 Table of Contents

7.10 STATus-QUEStionable:SYNC register ..................................................................126

7.11 Table of softkeys with assignment of IEC-bus commands .................................127

7.11.1 MEAS key and MEAS hotkey ....................................................................................127

7.11.2 Hotkey RESULTS bzw Softkey CODE DOM ANALYZER.........................................130

.11.3

7.11.4 Hotkey SETTINGS.....................................................................................................132

otkey CHAN CONF .................................................................................................131

8 Checking the Rated Specifications............................................... 134

8.1 Measuring equipment and accessories ................................................................134

8.2 Test sequence ..........................................................................................................135

9 Code Table for Hadamard and BitReverse Order......................... 137

Glossary .......................................................................................... 139

Index ................................................................................................ 141

Software Manual 1007.9800.42 - 06 3

Page 6

Page 7

S-K83 Documentation Overview

Documentation Overview

The user documentation for the R&S FS-K92/93/94 is divided as follows:

? R&S®FMU ? R&S®FSG ? R&S®FSP ? R&S®FSQ ? R&S®FSU ? R&S®FSUP

Software Manual 1007.9800.42 - 06 5

Page 8

S-K83 cdma2000 Mobile Station Test Application Firmware R&S FS-K83

cdma2000 Mobile Station Test Application Firmware R&S FS-K83

When configured with Application Firmware R&S FS-K83, the analyzer performs code domain power measurements on reverse link signals (mobile station) on the basis of

he 3GPP2 Standard (Third Generation Partnership Project 2).

"Physical Layer Standard for cdma2000 Spread Spectrum Systems Release C" of version C.S0002-C V1.0 dated May 2002 and “Recommended Minimum Performance Standard for cdma2000 Spread Spectrum Base Stations“ of version C.S0010-B dated December 2002 form the basis

This standard has been adopted by the following authorities with the specified norm:

? TIA: dated February 2003 (also known as IS-97-E)

Reference made to the cdma2000 specification in the following text alludes to these standards.

The application firmware supports the radio configurations 3 and 4. Apart from cdma2000 reverse link signals, the 1xEV-DV reverse link channels of Release C are also supported. Code Domain Analysis is also possible at signals where the pilot channel is at least active in one of captured power control groups (pilot gating). In addition to the code domain measurements described in the cdma2000 Standard, the application features measurements in the spectral range such as channel power, adjacent channel power, occupied bandwidth and spectrum emission mask with predefined settings.

Software Manual 1007.9800.42 - 06 6

Page 9

S-K83 Installing and Enabling the Application Firmware

1 Installing and Enabling the Application

Firmware

1.1 Installation

If Application Firmware R&S FS-K83 has not been installed on the device, a firmware update will have to be performed. This will have been done already if the application software was installed at the factory. Before the application firmware can be installed, a corresponding basic firmware of the basic device has to be installed on the analyzer. Refer to the release notes of the current Application Firmware R&S FS-K83 for the compatible versions. If the basic firmware has to be updated, start the firmware update from the current floppy disks of the basic firmware by successively pressing SETUP  NEXT  FIRMWARE UPDATE. If the correct basic firmware is installed, the firmware update for the application firmware is started from the floppy disks for the firmware of the R&S FS-K83 application using the same key sequence - SETUP  NEXT  FIRMWARE UPDATE. Following installation, the application firmware has to be enabled as described below.

Installation

1.2 Enabling

Application Firmware R&S FS-K83 is enabled in the SETUP  GENERAL SETUP menu by entering a keyword. The keyword is supplied with the application firmware. When the application software is installed before the device leaves the factory, the application firmware will already have been enabled.

GENERAL SETUP menu:

OPTIONS

The OPTIONS softkey opens a submenu in which the keywords can be entered for the application firmware. The available applications are displayed in a table, which is opened when you enter the submenu.

INSTALL OPTION

The INSTALL OPTION softkey activates input of the keyword for an application firmware. One or several keywords can be entered in the input field. If the keyword is valid, the message OPTION KEY OK is displayed and the application firmware is entered in the FIRMWARE OPTIONS table. If a keyword is invalid, the message OPTION KEY INVALID is displayed. If the version of the application firmware and the version of the basic firmware are not compatible, an appropriate message is issued. In this instance, follow the instructions contained in the previous section, "Installation".

Software Manual 1007.9800.42 - 06 7

Page 10

S-K83 Getting Started

2 Getting Started

The following chapter explains basic cdma2000 mobile station tests using a test setup with the Signal Generator SMIQ as the device under test. It describes how operating and measuring errors can be avoided by means of correct default settings.

The measurement screen is presented in Chapter 0 for the different measurements.

Attention is drawn to important settings exemplifying how to avoid measurement errors during measurements. The correct setting is followed by the effect of an incorrect setting. The following measurements are performed:

Measurement 1: Measurement of the signal spectrum

Measurement 2: Measurement of the spectrum emission mask

Measurement 3: Measurement of the relative code domain power and the frequency

error

Setting: Center frequency

Enabling

Measurement 4: Triggered measurement of the relative code domain power

Setting: Triggeroffset

Measurement 5: Measurement of the composite EVM

Measurement 6: Measurement of the peak code domain error

Measurement 7: Measurement of the RHO factor

The cdma2000 raw data are created with the R&S WinIQSIM software and loaded into the arbitrary waveform generator of the R&S SMIQ.

The measurements are performed with the following instruments and aids:

? Spectrum Analyzers R&S FSU, R&S FSP or Signal Analyzer R&S FSQ with

Application Firmware R&S FS-K83 (mobile station test for cdma2000).

? Vector Signal Generator SMIQ with hardware options B11 (data generator) / B20

(modulation coder) and B60 (arbitrary waveform generator) together with firmware version 5.20 or higher with enabled option K12 cdma2000 and SMIQ-Z5 PARDATA BNC ADAPTER for external trigger signal.

? PC that is either connected by means of a serial cable to the SMIQ, or has an IEC-

bus card and connected by means of an IEC-bus cable to the SMIQ. R&S WinIQSIM Software V3.20 or higher is installed on that PC. The software can be downloaded from the Rohde & Schwarz web site on the Internet at

http://www.rohde-schwarz.com

? 1 coaxial cable, 50 , approximately 1 m, N connector ? 2 coaxial cables, 50 , approximately 1 m, BNC connector

Software Manual 1007.9800.42 - 06 8

Page 11

S-K83 Getting Started

Generating a cdma2000 reverse link signal with WinIQSIM

2.1 Generating a cdma2000 reverse link signal with WinIQSIM

The WinIQSIM software can be downloaded at http://www.rohde-schwarz.com and is installed on a PC. The WinIQSIM software can be used to generate cdma2000 reverse

ink signals, which are then transferred on an SMIQ or AMIQ. An explanation is given

l below of how the test signal described in the cdma2000 standard is generated. WinIQSIM version 3.20 or higher is assumed.

Selecting Start and Standard:

a. Start WinIQSIM.exe. b. In the File menu, select the New option and select CDMA2000 from the list

that follows. The CDMA2000 dialog box appears.

c. Under General Settings, first select Reverse Link to switch to the mobile

station signals. Activate MS1 by clicking ON and then click MS1 to configure mobile station 1.

d. Set RC 3 for Radio Configuration. The dialog box looks like the one below:

Fig. 1 WinIQSIM mobile station configuration for RC 3 prior to defining the active channels

Activate channels:

In this mobile station configuration, the following settings are performed so that a reverse link signal with pilot channel (PICH), fundamental channel (FCH) and supplemental channel 1 (S1CH) is generated

Set PICH State, FCH State and S1CH State to ON. Set the data rate for the FCH to

19.2 kbps and the data rate for the S1CH to 76.8 kbps; these are the highest data rates at which the FCH is sent with code number 4 at spreading factor 16 (Q branch) and the S1CH is sent with code number 2 at spreading factor 4 (Q

Software Manual 1007.9800.42 - 06 9

Page 12

S-K83 Getting Started

Generating a cdma2000 reverse link signal with WinIQSIM

branch). The data rate cannot be modified at the pilot; is always sent with code number 0 at spreading factor 32 (I branch).

Fig. 2 WinIQSIM configuration with active channels

Define trigger settings:

Then, set the trigger settings on the SMIQ menu by choosing the option Trigger

Output Settings. For the Current Mode: Mode 1 the Restart Clock (SEQUENCE) is defined. This means that the trigger at the slot limit is available

every 80 ms at TRIG1 of the SMIQ Z5 BNC adapters.

Fig. 3 WinIQSIM base station configuration of the finished model

Save and download to R&S SMIQ:

a. Save this cdma2000 configuration with File|Save as file 'C2KMS.IQS'.

Software Manual 1007.9800.42 - 06 10

Page 13

S-K83 Getting Started

Default settings in cdma2000 MS operating mode

b. Connect the R&S SMIQ e either serially or by means of an IEC-bus card and

IEC-bus cable to the SMIQ and, in the SMIQ|TRANSMISSION menu, load the generated signal under the name 'C2KMS' onto the R&S SMIQ.

2.2 Default settings in cdma2000 MS operating mode

At the default setting after PRESET, the analyzer is in SPECTRUM mode. The following basic settings of the code domain measurement are not activated until the cdma2000 MS operating mode is selected by operating the CDMA2k MS hotkey.

Table 1 Default setting of code domain measurement after preset

Parameter Setting

Digital standard CDMA 2000 MC1 (MC1 stands for Multi-Carrier 1

and thus describes cdma2000 1X, i.e. a carrier)

Band class Band class 0 (800 MHz band)

Sweep CONTINUOUS

CDP mode CODE CHAN AUTOSEARCH

Trigger setting FREE RUN

Trigger offset 0 s

Long code mask 0

Long code offset 0 chips

Threshold value -40 dB

Code number 0

PCG number 0

Capture length 3 PCGs (PCG stands for Power Control Group)

Code order Hadamard

Analysis Screen A: CODE PWR RELATIVE

Screen B: RESULT SUMMARY

? The following conventions apply for displaying settings on the analyzer:

[[<Key>] Press a key on the front panel, e.g. [SPAN] [<SOFTKEY>] Press a softkey, e.g. [MARKER -> PEAK] [<nn unit>] Enter a value and terminate by entering the unit, e.g. [12

kHz]

? The following conventions apply for displaying settings on the R&S SMIQ:

[[<Key>] Press a key on the front panel, e.g. [FREQ] <MENU> Choose a menu, parameter or setting, e.g. DIGITAL STD.

The menu level is identified by indenting.

<nn unit> Enter a value and terminate by entering the unit, e.g. 12

kHz

Software Manual 1007.9800.42 - 06 11

Page 14

S-K83 Getting Started

Measurement 1: Measurement of the signal power

2.3 Measurement 1: Measurement of the signal power

Measurement of the spectrum provides an overview of the cdma2000 signal and the carrier-oriented spurious emissions.

Test setup

R Connect the RF output of the R&S SMIQ to the RF input of the analyzer (coaxial

cable with N connectors).

Settings on R&S SMIQ

[PRESET] [LEVEL: 0 dBm] [FREQ: 833.49 MHz] ARB MOD SET SMIQ ACCORDING TO WAVEFORM ... SET SMIQ ACCORDING TO WAVEFORM ON IQ SWAP (VECTOR MODE) ON TRIGGER OUT MODE ON

(These three settings are only required once after generator preset and are used to apply, in VECTOR MODE, the IQ SWAP and, in ARB MOD, the trigger setting automatically from the waveform file generated by WinIQSIM. This is particularly convenient when a switch is made between different waveforms.)

SELECT WAVEFORM... select nameC2KMS STATE: ON

Settings on Analyzer:

[PRESET] [FREQUENCY: 833.49 MHz] [AMPT: 0 dBm]

[CDMA2k MS] [MEAS: POWER]

Measurement on Analyzer:

The following are displayed:

? The spectrum of the cdma2000 signal ? The channel power of the signal within the 1.2288 MHz channel bandwidth

Software Manual 1007.9800.42 - 06 12

Page 15

S-K83 Getting Started

Measurement 2: Measurement of the spectrum emission mask

2.4 Measurement 2: Measurement of the spectrum emission mask

The cdma2000 specification calls for a measurement which monitors compliance with a spectral mask in a range of at least ±4.0 MHz around the cdma2000 carrier. To

ssess the power emissions within the specified range, signal power is measured with

a a 30 kHz filter. The ensuing trace is compared with the limit line, defined in the cdma2000 specification, according to the selected band class.

Test setup

 Connect the RF output of the R&S SMIQ to the RF input of the analyzer (coaxial

cable with N connectors).

Settings on R&S SMIQ:

R&S SMIQ settings as for measurement 1

Settings on Analyzer:

[PRESET] Band class 0 is thus selected [FREQUENCY: 833.49 MHz] [AMPT: 0 dBm]

[CDMA2k MS [MEAS: SPECTRUM EM MASK]

Measurement on Analyzer:

The following are displayed:

? The spectrum of the cdma2000 signal ? The limit line defined in the standard ? Information on limit line overranging (passed/failed) ? If available, the largest overrange with frequency and level value

Software Manual 1007.9800.42 - 06 13

Page 16

S-K83 Getting Started

Measurement 3: Measurement of the relative code domain power and the frequency error

2.5 Measurement 3: Measurement of the relative code domain power and the frequency error

Measurement of the code domain power on a test model (with 3 channels) is shown below. In this case the basic parameters of the CDP measurements, which allow

nalysis of the signal, reset successively from values adjusted to the test signal to

a those that have not been adjusted in order to demonstrate the resulting effects.

Settings on R&S SMIQ:

R Connect the RF output of the R&S SMIQ to the RF input of the analyzer.

R Connect the reference input (EXT REF IN/OUT) on the rear panel of the analyzer

to the reference output (REF) on the R&S SMIQ (coaxial cable with BNC connectors).

Settings on R&S SMIQ:

R&S SMIQ settings as for measurement 1.

Settings on Analyzer:

PRESET]

[FREQUENCY: 833.49 MHz] [AMPT: 10 dBm] [CDMA2k MS]

Measurement on Analyzer:

The following are displayed:

Screen A: Code domain power of signal (model with 3 channels)

Screen B: Numerical results of CDP measurement including the frequency error

Software Manual 1007.9800.42 - 06 14

Page 17

S-K83 Getting Started

Setting: Synchronizing the reference frequencies

2.6 Setting: Synchronizing the reference frequencies

Synchronization of the transmitter and receiver to the same reference frequency reduces the frequency error.

Test setup

R Connect the reference input (EXT REF IN/OUT) on the rear panel of the analyzer to

the reference output (REF) on the R&S SMIQ (coaxial cable with BNC connectors).

Settings on R&S SMIQ:

As for measurement 1

Settings on Analyzer:

As for measurement 3, plus:

[SETUP: REFERENCE EXT]

Measurement on Analyzer:

Screen B: Frequency error: The displayed frequency error should be <10 Hz

The reference frequencies of the analyzer and the device under test should be synchronized.

2.7 Setting: Behaviour with deviating center frequency setting

In the following setting, the behaviour of the device under test and analyzer on a deviating center frequency setting is shown.

Settings on R&S SMIQ:

R Tune the center frequency of the signal generator in 0.1 kHz steps and watch the

analyzer screen.

Measurement on Analyzer:

? Up to about 2.0 kHz frequency error, a CDP measurement is still possible on the

analyzer. A difference in the measurement accuracy of the CDP measurement is not discernible up to this frequency error.

? From a frequency offset of 2.3 kHz and higher, the probability of an impaired

synchronization increases. The 'SYNC FAILED' message appears.

Settings on R&S SMIQ:

R Set the signal generator center frequency again to 833.49 MHz:

[FREQ: 833.49 MHz]

The center frequency of the analyzer must agree with the frequency of the device under test to within a 2.0 kHz offset.

Software Manual 1007.9800.42 - 06 15

Page 18

S-K83 Getting Started

Measurement 4: Triggered measurement of the relative code domain power

2.8 Measurement 4: Triggered measurement of the relative code domain power

If the code domain power measurement is performed without external triggering, an extract is recorded from the test signal at a random point in time and attempts to detect

he start of power control group (PCG) in it. To detect this start, all possibilities of the

t PN sequence location have to be tested in Free Run mode. This requires computing time. This computing time can be reduced by creating an external (frame) trigger. The search range for the start of the power control group are known and fewer options have to be tested.

Test setup

R Connect the RF output of the R&S SMIQ to the RF input of the analyzer.

R Connect the reference frequencies (refer to measurement 2).

R Connect external triggering of the analyzer (EXT TRIG GATE) to the R&S SMIQ

trigger (TRIGOUT1 at PAR DATA).

Settings on R&S SMIQ:

As for measurement 1

Settings on Analyzer:

As for measurement 3, plus

[TRIG: EXTERN]

Measurement on Analyzer:

The following are displayed:

Screen A: Code domain power of signal

Screen B: Numerical results of CDP measurement

Trg to Frame:

The repetition rate of the measurement increases compared with measurement without an external trigger.

Time offset between trigger event and start of the PCG

Software Manual 1007.9800.42 - 06 16

Page 19

S-K83 Getting Started

Setting: Trigger offset

2.9 Setting: Trigger offset

Any delay of the trigger event compared to the start of the PCG can be compensated by changing the trigger offset.

Settings on Analyzer:

As for measurement 3, plus [TRIG:]

[TRIG OFFSET 100 Ds]

Measurement on Analyzer:

The parameter "Trg to Frame" in the numerical results table (Screen B) changes: Trg to Frame -100 µs

A trigger offset compensates analog delays of the trigger event.

Software Manual 1007.9800.42 - 06 17

Page 20

S-K83 Getting Started

Measurement 5: Measurement of the composite EVM

2.10 Measurement 5: Measurement of the composite EVM

Composite EVM is the measurement of the mean square error of the total signal, as defined in the cdma2000 specification.

An ideal reference signal is generated from the demodulated data. The test signal and

he reference signal are compared with each other; the square deviation produces the

t Composite EVM measurement.

Test setup

R Connect the RF output of the R&S SMIQ to the RF input of the analyzer (coaxial

cable with N connectors).

R Connect the reference input (EXT REF IN/OUT) on the rear panel of the analyzer

to the reference output (REF) on the R&S SMIQ (coaxial cable with BNC connectors).

R Connect external triggering of the analyzer (EXT TRIG GATE) to the R&S SMIQ

trigger (TRIGOUT1 at PAR DATA).

Settings on R&S SMIQ:

R&S SMIQ settings as for measurement 1

Settings on Analyzer:

[PRESET]

[FREQUENCY: 833.49 MHz] [AMPT: 10 dBm] [CDMA2k MS [TRIG EXTERN] [RESULTS COMPOSITE EVM]

Measurement on Analyzer:

The following are displayed:

Screen A:

Screen B: Composite EVM (EVM for total signal)

Code domain power of signal

Software Manual 1007.9800.42 - 06 18

Page 21

S-K83 Getting Started

Measurement 6: Measurement of the peak code domain error

2.11 Measurement 6: Measurement of the peak code domain error

With the peak code domain error measurement, an ideal reference signal is generated from the demodulated data. The test signal and the reference signal are compared with

ach other; the difference between the two signals is projected to the class of the base

e spreading factor. The peak code domain error measurement is obtained by summing the symbols of each difference signal PCG and searching for the maximum error code.

Test setup

R Connect the RF output of the R&S SMIQ to the RF input of the analyzer (coaxial

cable with N connectors).

R Connect the reference input (EXT REF IN/OUT) on the rear panel of the analyzer

to the reference output (REF) on the R&S SMIQ (coaxial cable with BNC connectors).

Settings on Analyzer:

[PRESET]

[FREQUENCY: 833.49 MHz] [AMPT: 0 dBm] [CDMA2k MS] [RESULTS PEAK CODE DOMAIN ERR]

Measurement on Analyzer:

The following are displayed:

Screen A: Code domain power of signal

Screen B: Peak code domain error (for base spreading factor with default value 64)

Software Manual 1007.9800.42 - 06 19

Page 22

S-K83 Getting Started

Measurement 7: Measurement of the RHO factor

2.12 Measurement 7: Measurement of the RHO factor

A measurement of the RHO factor is shown in the following. The RHO quality parameter should be measured using a signal which only contains the pilot channel. Accordingly, only the pilot has to be activated in a WinIQSIM model.

Settings on R&S SMIQ:

R Connect the RF output of the R&S SMIQ to the RF input of the analyzer.

R Connect the reference input (EXT REF IN/OUT) on the rear panel of the analyzer

to the reference output (REF) on the R&S SMIQ (coaxial cable with BNC connectors).

Settings on R&S SMIQ:

R&S SMIQ settings as for measurement 1, but only the pilot has to be activated in the WinIQSIM model.

Settings on Analyzer:

[PRESET]

[FREQUENCY: 833.49 MHz] [AMPT: 10 dBm] [CDMA2k MS]

Measurement on Analyzer:

The following are displayed:

Screen A: Code domain power of signal (only pilot from 0.32)

Screen B: Numerical results of CDP measurement including the RHO factor

Software Manual 1007.9800.42 - 06 20

Page 23

S-K83 Test Setup for Mobile Station Tests

Standard test setup

3 Test Setup for Mobile Station Tests

ailure to comply with the above points may result in damage to the device.

Before putting the device into operation, make sure that

? The housing covers are in place and their screws have been tightened ? The ventilation slits are free ? No signal voltage levels above the permissible limits are applied to the inputs ? The outputs of the device are not overloaded or wrongly connected.

This chapter describes the default settings of the analyzer for operation as a cdma2000 mobile station tester. A condition that has to be met before measurements can start is that the analyzer is correctly configured and supplied with power, as described in Chapter 1 of the operating manual for the basic device. Furthermore, Application Firmware R&S FS-K83 must be enabled. Installation and enabling of the application firmware are explained in Chapter 1 of this software manual.

3.1 Standard test setup

PECTRUM ANALYZER 20Hz . . . 3.6 GHz

REQ

PRESET

CAL

ETUP

COPY

MKR

456

123

ESC

ANCEL

RACE

INES

ISP

FILE

PREV NEXT

Fig. 4 MS test setup

1129.9003.03

MPTSPAN

WSWEEP

IIN

MKR

MEAS TRIG

FCTN

dBm

OISE SOURCE

B..

OWER SENSOR

ENTER

ACK

FOUTPUT

EYBOARD

ROBE POWER

EN OUTPUT 50

FINPUT

XT MIXER

0



OOUT/ IF IN IF IN

AX+30 dBm / 0V D C

AX 0V DC

ADE IN GERMANY

INPUT

TX signal

DEF

564

ÜVW7STU

.-0

SCRCL M

GHI1ABC

Software Manual 1007.9800.42 - 06 21

Page 24

S-K83 Test Setup for Mobile Station Tests

Standard test setup

R Connect the antenna output (or TX output) of the mobile station by means of a

power attenuator exhibiting suitable attenuation to the RF input of the analyzer. The following level values for external attenuation are recommended to ensure that the RF input of the analyzer is protected and the sensitivity of the device is not impaired too much:

Maximum power Recommended external

attenuation

 55 to 60 dBm 35 to 40 dB

 50 to 55 dBm 30 to 35 dB

 45 to 50 dBm 25 to 30 dB

 40 to 45 dBm 20 to 25 dB

 35 to 40 dBm 15 to 20 dB

 30 to 35 dBm 10 to 15 dB

 25 to 30 dBm 5 to 10 dB

 20 to 25 dBm 0 to 5 dB

< 20 dBm 0 dB

R For signal measurements at the output of two-port networks, connect the reference

frequency of the signal source to the rear reference input of the analyzer (EXT REF IN/OUT).

R To maintain the error limits called for in the cdma2000 specification during

frequency measurement on mobile stations, the analyzer has to be operated on an external reference. The reference source might be a rubidium frequency standard, for example.

R If the mobile station has a trigger output, connect the trigger output of the mobile

station to the rear trigger input of the analyzer (EXT TRIG GATE).

Default settings

R Enter the external attenuation.

[AMPT] [NEXT] [REF LVL OFFSET].

R Enter the reference level.

[AMPT]

R Enter the center frequency.

[FREQUENCY]

R Set the trigger.

[TRIG]

R During use, switch on external reference.

[SETUP] [REF: EXT]

R Select the standard and the desired measurement.

[CDMA2k MS] [RESULTS]

Software Manual 1007.9800.42 - 06 22

Page 25

S-K83 Predefined Channel Tables

Standard test setup

4 Predefined Channel Tables

By default, the application firmware works in automatic Channel Search mode (softkey CODE CHAN AUTOSEARCH). However, there is also the option of using predefined channel tables and taking the code domain analysis as a basis. To do this, select the channel table and enable the predefined search mode (softkey CODE CHAN PREDEFINED). In accordance with the cdma2000 specification, different channel tables are defined for the various operating modes. They are listed below. Should channels other than those that appear in the predefined channel tables of the firmware application be used, the original tables should be copied and the channels adapted in the copy. (Refer to the CHAN CONF hotkey on page 72.) With supplemental channels, it is also possible to adapt the code number and spreading factor.

Channel table for ENHANCED ACCESS CHANNEL OPERATION with PICH and EACH with the name EACHOP

Table 2 Channel table for enhanced access channel operation

Channel type Code channel

(Walsh Code.SF)

PICH 0.32 I

EACH 2.8 Q

Mapping

Channel table for REVERSE COMMOM CONTROL CHANNEL OPERATION with PICH and CCCH with the name RCCCHOP

Table 3 Channel table for reverse common control channel operation

Channel type Code channel

(Walsh Code.SF)

PICH 0.32 I

CCCH 2.8 Q

Mapping

Channel table for REVERSE TRAFFIC CHANNEL OPERATION with the following 3 channels: PICH/DCCH/FCH with the name RTCHOP3.

Table 4 Channel table for REVERSE TRAFFIC CHANNEL OPERATION 3

Channel type Code channel

(Walsh Code.SF)

PICH 0.32 I

Mapping

FCH 4.16 Q

S1CH 2.4 Q

Software Manual 1007.9800.42 - 06 23

Page 26

S-K83 Predefined Channel Tables

Standard test setup

Channel table for REVERSE TRAFFIC CHANNEL OPERATION with the following 5 channels: PICH/DCCH/FCH/S1CH/S2CH with the name RTCHOP5.

Table 5 Channel table for REVERSE TRAFFIC CHANNEL OPERATION 5

Channel type Code channel (Walsh

Code.SF)

PICH 0.32 I

DCCH 8.16 I

FCH 4.16 Q

S1CH 2.4 Q

S2CH 6.8 I

Mapping

For further information on the channel table defaults, refer to hotkey CHAN CONF.

The channel abbreviations are defined in Glossary

Software Manual 1007.9800.42 - 06 24

Page 27

S-K83 Menu Overview

Standard test setup

5 Menu Overview

Application Firmware R&S FS-K83 (cdma2000 mobile station tests) adds RF measurements and code domain power measurements for the cdma2000 Forward Link mobile radio standard to the analyzer.

PECTRUM

Fig. 5 Hotkey bar with enabled Application Firmware R&S FS-K83

DMA2k MS

CREEN B

After the application firmware has been called by operating hotkey CDMA2k MS (2k stands for 2 thousand, i.e. cdma2000), a new hotkey bar is displayed at the bottom edge of the screen and the code domain analyzer is selected and started.

Fig. 6 Overview of the menus in Application Firmware R&S FS-K83

Software Manual 1007.9800.42 - 06 25

Page 28

S-K83 Menu Overview

Standard test setup

There are different analyses for the code domain analyzer. They can be selected by means of the RESULTS hotkey. The SETTINGS hotkey allows the application firmware to be parameterized. The base spreading factor or the band class can be set in this menu, for example. The CHAN CONF hotkey is used to set Channel Search mode for the code domain analyzer. Furthermore, the customer can also define his own channel tables.

The MEAS hotkey is identical to the MEAS key (on the right of the front panel) and is used to select the different RF measurements or the code domain analyzer.

Clicking the CHAN CONF or RESULTS hotkey automatically switches to the code domain analyzer.

Pressing the EXIT CDMA hotkey once exits R&S FS-K83. The hotkey bar of the basic device is displayed again and the analyzer goes to SPECTRUM, the default mode.

Transition from the SPECTRUM operating mode to the application firmware:

The following user-specific settings are not modified so that the adaptation to the device under test is retained:

Reference Level + Rev Level Offset Center Frequency + Frequency Offset Input Attenuation + Mixer Level

The following user-specific settings are transferred as follows: External trigger sources are retained, while all other trigger sources result in Free Run mode.

Additional trigger settings are retained.

Transition from the application firmware to the SPECTRUM operating mode:

The following user-specific settings are not modified so that the adaptation to the device under test is retained:

Reference Level + Rev Level Offset Center Frequency + Frequency Offset Input Attenuation + Mixer Level

The following user-specific settings are transferred as follows:

The trigger source is switched to FREE RUN and an analyzer frequency sweep is set with the SPAN

equal to the double the center frequency, or the maximum possible span, so that the center frequency remains unchanged at any event.

Software Manual 1007.9800.42 - 06 26

Page 29

S-K83 Menu Overview

Standard test setup

The measurements available in R&S FS-K83 can be selected by means of the MEAS hotkey or the MEAS key:

Fig. 7 Overview of menus

Software Manual 1007.9800.42 - 06 27

Page 30

S-K83 Configuration of cdma2000 Measurements

Measuring channel power

6 Configuration of cdma2000 Measurements

The most important measurements of the cdma2000 specification for mobile stations can be selected by means of the MEAS hotkey and MEAS key. They will be explained below on the basis of the softkey functions.

The CODE DOM ANALYZER softkey activates the code domain analyzer and guides the user to the submenus for selection of the analysis. Changing the assignment of the hotkey bar during transition to the application ensures that the most important parameters of the code domain analyzer can be directly accessed on the hotkey bar.

The POWER, ACLR, SPECTRUM EM MASK, OCCUPIED BANDWIDTH, and STATISTICS softkeys activate mobile station measurements with predefined settings, which are performed in SPECTRUM mode of the basic device. The measurements are performed with the parameters contained in the cdma2000 specification. The settings can be modified later.

MEAS key or MEAS hotkeys

The MEAS hotkey or the MEAS key opens a submenu for selecting the measurements:

? POWER enables the channel power measurement with defined default values in

SPECTRUM mode.

? ACLR enables the adjacent channel power measurement with defined default

values in SPECTRUM mode..

? SPECTRUM EM MAS

carrier with the maximum values laid down in the cdma2000 specification.

? OCCUPIED BANDWIDTH

signal.

? CODE DOM ANALYZER

menu for choosing the analysis type. All other menus of the analyzer are adapted to the functions of the code domain analyzer mode. The code domain analyzer is described in a separate chapter starting on page 51.

? STATISTICS analyzes the signal with regard to its statistical characteristics

(distribution function of the signal amplitudes).

K compares the signal power in different offset ranges of the

enables measurement of the bandwidth assigned to the

enables the code domain analyzer and opens another

6.1 Measuring channel power

POWER

The POWER softkey enables measurement of the channel power of the cdma2000 signal.

The analyzer measures the RF signal power in the 1.2288 MHz bandwidth. The power is calculated by summation of the values at the trace points. The bandwidth and the associated channel power are displayed beneath the measurement screen.

Software Manual 1007.9800.42 - 06 28

Page 31

S-K83 Configuration of cdma2000 Measurements

Measuring adjacent channel power - ACLR

MS,1X,C 0 :CHA N POW ER

ef -3 dBm

-10

-20

-30

-40

CLRWR

-50

-60

-70

-80

-90

-100

Center 833.49 MHz Span 2 MHz200 kHz/

xChannel CDMA2000MC1

Bandwidth 1.2288 MHz

tt 5 dB

RBW 10 kHz

BW 300 kHz

V S

WT 100 ms

Power -0.31 dBm

arker 1 [T1 ]

-25.23 dBm

833.526057692 MHz

Fig. 8 Power measurement in the 1.2288 MHz transmission channel

The softkey enables SPECTRUM mode with defined settings:

The following user-specific settings are not modified on the first access following presetting Level parameters

Center Frequency + Frequency Offset All trigger settings

ADJACENT CHAN POWER ON

ACP STANDARD cdma2000 MC1 (MC1 simply stands for multi carrier, i.e. a carrier)

NO OF ADJ CHANNELS 0 (main channel only)

FREQUENCY SPAN 2 MHz

Departing from these settings, the analyzer can be operated in all functions featured in SPECTRUM mode, i.e. all measurement parameters can be adapted to the requirements of the specific measurement.

To restore adapted measurement parameters, the following parameters are saved on exiting and are set again on re-entering

this measurement:

Level parameters RBW, VBW Sweep time

Remote: CONF:CDP:MEAS POW

Query of results: CALC:MARK:FUNC:POW:RES? CPOW

6.2 Measuring adjacent channel power - ACLR

MEAS key or MEAS hotkey

NO. OF ADJ CHAN ADJUST SETTINGS NOISE CORR ON/OFF FAST ACLR DIAGRAM FULL SIZE ADJUST REF LVL ACLR LIMIT CHECK

Software Manual 1007.9800.42 - 06 29

Page 32

S-K83 Configuration of cdma2000 Measurements

Measuring adjacent channel power - ACLR

CHANNEL BANDWIDTH ADJ CHAN BANDWIDTH ADJ CHAN SPACING ACLR ABS/REL CHAN PWR / HZ POWER MODE

The ACLR (Adjacent Channel Leakage Power Ratio) softkey enables measurement of the adjacent channel power. The settings and limit values are taken from the spurious measurement defined in the cdma2000 specification.

The analyzer measures the power of the useful channel and of the adjacent channels on the left and right sides. At the default setting, only two adjacent channels are taken into account. Measurement results are displayed beneath the measurement screen.

The limits depend on the band class setting (BAND CLASS softkey).

The ACLR limit check can be enabled or disabled by means of the ACLR LIMIT CHECK softkey.

MS,1X,C 0 :ADJ CHANNEL

Ref -6.3 dBm Att 10 dB*

-10

-20

-30

-40

1RM CLRWR

-50

-60

-70

-80

-90

-100

Center 833.49 MHz Span 4.5 MHz450 kHz/

Tx Channel CDMA 2000 MC1

Bandwidth 1.2288 MHz

Adjacent Channel

Bandwidth 30 kHz Spacing 885 kHz

Alternate Channel

Bandwidth 30 kHz Spacing 1.98 MHz

Fig. 9 Measuring adjacent channel power

**RBW 10 kHz

VBW 300 kHz SWT 100 ms*

Power -0.45 dBm

Lower -63.08 dB Upper -66.10 dB

Lower -91.23 dB Upper -94.14 dB

Marker 1 [T1 ]

-20.30 dBm

833.526057692 MHz

The softkey enables SPECTRUM mode with defined settings:

The following user-specific settings are not modified on the first access following presetting: Level parameters Center Frequency + Frequency Offset All trigger settings

ADJACENT CHAN POWER ON

ACP STANDARD cdma2000 MC1

NO OF ADJ. CHANNELS 2

Software Manual 1007.9800.42 - 06 30

Page 33

10 log 30 kHz for limit values which are not

S-K83 Configuration of cdma2000 Measurements

Measuring adjacent channel power - ACLR

Table 6 ACLR settings for band classes 0, 2, 5, 9, 11 and 12

Adjacent channel type Spacing RBW Rel. Limit Abs. Limit

Adjacent 885 kHz 30 kHz -42 dBc -70.2 dBm

Alternate 1.98 MHz 30 kHz -54 dBc -70.2 dBm

Alternate2 4.00 MHz 30 kHz -54 dBc -70.2 dBm

Table 7 ACLR settings for band class 3

Adjacent channel type Spacing RBW Rel. Limit Abs. Limit

Adjacent 885 kHz 30 kHz -42 dBc -70.2 dBm

Alternate 1.98 MHz 30 kHz -54 dBc -70.2 dBm

Alternate2 4.00 MHz 30 kHz -54 dBc none

Table 8 ACLR settings for band class 7

Adjacent channel type Spacing RBW Rel. Limit Abs. Limit

Adjacent 885 kHz 30 kHz -42 dBc -70.2 dBm

Alternate 1.98 MHz 30 kHz -42 dBc -70.2 dBm

Alternate2 2.25 MHz 30 kHz none -28.2 dBm

Table 9 ACLR settings for band class 10

Adjacent channel type Spacing RBW Rel. Limit Abs. Limit

Adjacent 885 kHz 30 kHz -42 dBc -70.2 dBm

Alternate 1.25 MHz 30 kHz none -13 dBm

Alternate2 4.00 MHz 30 kHz none -13 dBm

Table 10 ACLR settings for band classes 1, 4, 8, 14 and 15

Adjacent channel type Spacing RBW Rel. Limit Abs. Limit

Adjacent 1.25 MHz 30 kHz -42 dBc -70.2 dBm

Alternate 1.98 MHz 30 kHz -50 dBc -70.2 dBm

Alternate2 4.00 MHz 30 kHz -50 dBc -70.2 dBm

Table 11 ACLR settings for band class 6

Adjacent channel type Spacing RBW Rel. Limit Abs. Limit

Adjacent 1.25 MHz 30 kHz -42 dBc -70.2 dBm

Alternate 1.98 MHz 30 kHz -50 dBc -70.2 dBm

Alternate2 2.25 MHz 30 kHz none -28.3 dBm

The limit is corrected by 0 log RBW – specified for 30 kHz bandwidth in the standard.

Software Manual 1007.9800.42 - 06 31

Page 34

S-K83 Configuration of cdma2000 Measurements

Measuring adjacent channel power - ACLR

To restore adapted measurement parameters, the following parameters are saved on exiting and are set again on re-entering this measurement:

Level parameters RBW, VBW Sweep time SPAN NO OF ADJ. CHANNELS FAST ACLR MODUS

Departing from these settings, the analyzer can be operated in all functions featured in SPECTRUM mode, i.e. all measurement parameters can be adapted to the requirements of the specific measurement.

Remote: CONF:CDP:MEAS ACLR Query of results: CALC:MARK:FUNC:POW:RES? ACP

NO. OF ADJ CHAN

The NO. OF ADJ CHAN softkey enables input of the number ±n of adjacent channels which are taken into account for the adjacent channel power measurement. 0 to 12 can be entered. The following measurements are performed depending on the number of channels.

0 Only the channel power is measured. 1 The channel power and the power of the upper and lower adjacent channel are

measured.

2 The channel power, the power of the upper and lower adjacent channel and of the

next upper and lower channel (alternate channel 1) are measured.

3 The channel power, the power of the upper and lower adjacent channel, the next

higher and lower channel (alternate channel 1) and the next but one higher and lower channel (alternate channel 2) are measured.

With higher numbers the procedure is expanded accordingly.

Remote: SENS:POW:ACH:ACP 2

ADJUST SETTINGS

The ADJUST SETTINGS softkey automatically optimizes the settings of the analyzer for the selected power measurement. All the analyzer settings relevant to power measurement within a specific frequency range (channel bandwidth) are then optimally set as a function of the channel configuration (channel bandwidth, channel spacing):

? Frequency span:

The frequency span must include at least the channels to be analyzed. The double channel bandwidth is set as the span for measuring the channel power. The span setting depends for adjacent channel power measurement on the channel spacing and the channel bandwidth of the adjacent channel ADJ, ALT1 or ALT2 farthest away from the transmission channel.

? Resolution bandwidth RBW  1/40 of channel bandwidth ? Video bandwidth VBW  3 × RBW. ? Detector RMS-Detektor

The trace mathematics and the trace averaging are disabled.

Software Manual 1007.9800.42 - 06 32

Page 35

S-K83 Configuration of cdma2000 Measurements

Measuring adjacent channel power - ACLR

The reference level is not affected by ADJUST SETTINGS. It has to be set separately by means of ADJUST REF LVL.

Adjustment is performed once; if necessary, the device settings can be changed again later.

Remote: SENS:POW:ACH:PRES ACP|CPOW|OBW

With manual setting of the measurement parameters deviating from that performed with ADJUST SETTINGS, the following must be borne in mind for the different parameters:

Frequency span

The frequency span must include at least all the channels needing to be measured. This is the channel bandwidth when channel power is measured. If the frequency span is large compared with the analyzed frequency section (or frequency sections), only a few pixels on the trace are available for the measurement.

Resolution bandwidth (RBW)

To ensure an acceptable measurement speed and also the necessary selection (for inhibiting spectral components outside the channel you want to measure, especially the adjacent channels), the resolution bandwidth must be selected so that it is neither too small nor too large. As a rule of thumb, the resolution bandwidth has to be set to values between 1% and 4% of the channel bandwidth. A larger resolution bandwidth can be set when the spectrum within and around the channel to be measured has an even characteristic.

Video bandwidth (VBW)

For a correct power measurement, the video signal must not be limited in terms of bandwidth. A band limitation of the logarithmic video signal would result in averaging and thus in a display of the power that would be too low (-2.51 dB at very small video bandwidth). The video bandwidth must therefore be at least three times higher than the resolution bandwidth. The ADJUST SETTINGS softkey sets the video bandwidth (VBW) as a function of the channel bandwidth as follows:

VBW  3 × RBW

Detector

The ADJUST SETTINGS softkey selects the RMS detector. The RMS detector is selected because it always indicates the power correctly, irrespective of the characteristics of the signal you want to measure. Generally speaking, the sample detector would also be possible. However, it results in unstable results on account of the limited number of trace pixels for calculation of the power in the channel. An averaging, which is often performed to stabilize the measurement results, produces a level display that is too low and must therefore be avoided. The lower level display depends on the number of averaging's and the signal characteristic in the channel needing to be measured.

Software Manual 1007.9800.42 - 06 33

Page 36

S-K83 Configuration of cdma2000 Measurements

Measuring adjacent channel power - ACLR

SWEEP TIME

The SWEEP TIME softkey enables entry of the sweep time. A longer sweep time results in more stable measurement results with the RMS detector. This setting is identical to the SWEEP TIME MANUAL setting in the BW menu.

Remote: SWE:TIM <value>

NOISE CORR ON/OFF

The NOISE CORR ON/OFF softkey enables correction of the measurement results by the background noise of the device, thus raising the dynamic range.

When the function is enabled, a reference measurement of the background noise on the device is performed first. The measured noise power is then subtracted from the power in the channel being analyzed. The background noise of the device depends on the selected center frequency, resolution bandwidth and level setting. The correction is therefore switched every time these settings are changed, and a corresponding message is displayed on the monitor.

To switch the background noise correction with the modified setting back on, the softkey must be pressed again. The reference measurement is then performed again.

Remote: SENS:POW:NCOR ON | OFF

FAST ACLR

The FAST ACLR softkey toggles between measurement by the IBW method (FAST ACLR OFF) and the time domain method (FAST ACLR ON). With FAST ACLR ON, the power measurement is performed in the different channels in the time domain. The analyzer adjusts its center frequency in succession to the different channel center frequencies and measures the power with the set measuring time (i.e. sweep time/number of measured channels). The suitable RBW filters for the selected standard and frequency offset are used automatically. The RMS detector is used for correct power measurement. This means that software correction factors are not necessary.

Measured values are displayed in a table, the power in the useful channel being output in dBm and the power in the adjacent channels in dBm (ACLR ABS) or dB (ACLR REL).

Selection of the sweep time (= measurement time) depends on the required reproducibility of the measurement results. The longer the selected sweep time, the more reproducible the measurement results will be, since the power measurement is then performed over a longer time.

As a rule of thumb, it can be assumed for a reproducibility of 0.5 dB (99% of the measurements are within 0.5 dB of the true measured value) that approximately 500 uncorrelated measured values are necessary (applies to white noise). The measured values are assumed to be uncorrelated when their spacing in time corresponds to the reciprocal value of the measurement bandwidth (= 1/BW). With cdma2000 the measurement bandwidth is 10 kHz, i.e. measured values at an interval of 10 Ys are assumed to be uncorrelated. Thus a measurement time (sweep time) of 50 ms per channel is required for 500 measured values. This is the default sweep time which the analyzer sets in coupled mode. Approximately 5000 measured

Software Manual 1007.9800.42 - 06 34

Page 37

S-K83 Configuration of cdma2000 Measurements

Measuring adjacent channel power - ACLR

values (i.e. the measurement time has to be extended to 500 ms) are required for a reproducibility of 0.1 dB (99% of all measurements are within 0.1 dB of the true measured values).

Remote: SENS:POW:HSP ON | OFF

DIAGRAM FULL SIZE

The DIAGRAM FULL SIZE softkey switches the diagram to full screen size.

Remote: --

ADJUST REF LVL

The ADJUST REF LVL softkey adjusts the reference level of the analyzer to the measured channel power. This ensures that the settings of the RF attenuation and the reference level are optimally adjusted to the signal level without the analyzer being overloaded or the dynamic response being limited by too low a signal-to-noise ratio. Since the measurement bandwidth is distinctly narrower for power channel measurements than the signal bandwidth, the signal branch can be overloaded, even though the trace is still well below the reference level.

Remote: SENS:POW:ACH:PRES:RLEV

ACLR LIMIT CHECK

The ACLR LIMIT CHECK softkey enables and disables the limit check for the ACLR measurement.

Remote: CALC:LIM:ACP ON CALC:LIM:ACP:ACH:RES? CALC:LIM:ACP:ALT1..11:RES?

EDIT ACLR LIMIT

The default settings of limits are defined at the start of the adjacent channel power measurement as a function of the selected band class (refer to the BAND CLASS softkey), as in the tables on page 23. Similarly, the values in these tables are restored on a change of band class. After the band class has been selected, a table can be opened in the ACLR measurement, however, by means of the EDIT ACLR LIMITS softkey and the limits for the ACLR measurement can be modified in the table.

CHAN RELATIVE LIMIT CHECK ABSOLUTE LIMIT CHECK

VALUE ON VALUE ON

ADJ -42 dBc  ALT1 -54 dBc  -7 0.2 dBm ALT2 -54 dBc  -7 0.2 dBm 

ACP LIMITS

-7 0.2 dBm

 

The following rules apply to limits:

? A separate limit can be defined for each of the adjacent channels. The limit applies

simultaneously to the lower and upper adjacent channels.

? A relative limit and/or an absolute limit can be defined. Checks of both limits can be

enabled independently of each other.

Software Manual 1007.9800.42 - 06 35

Page 38

and highlighted in

S-K83 Configuration of cdma2000 Measurements

Measuring adjacent channel power - ACLR

? Compliance with the active limits is checked independently of whether the limits

are absolute or relative and whether the measurement itself is performed at absolute levels or at relative signal intervals. If both checks are active and if the higher of the two limits has been exceeded, the measured value concerned is identified.

Measured values which violate the limit are preceded by an asterisk red.

Remote: CALC:LIM:ACP ON CALC:LIM:ACP:ACH 0dB,0dB CALC:LIM:ACP:ACH:STAT ON |OFF CALC:LIM:ACP:ACH:ABS -10dBm,-10dBm CALC:LIM:ACP:ACH:ABS:STAT ON CALC:LIM:ACP:ALT1 0dB,0dB CALC:LIM:ACP:ALT1:STAT ON CALC:LIM:ACP:ALT1:ABS -10dBm,-10dBm CALC:LIM:ACP:ALT1:ABS:STAT ON CALC:LIM:ACP:ALT2..11 0dB,0dB CALC:LIM:ACP:ALT2..11:STAT ON CALC:LIM:ACP:ALT2..11:ABS -10dBm,-10dBm CALC:LIM:ACP:ALT2..11:ABS:STAT ON

CHANNEL BANDWIDTH

The CHANNEL BANDWIDTH softkey enables entry of the channel bandwidth for the transmission channel.

The useful channel bandwidth is normally determined by the transmission procedure. With cdma2000 measurements are performed at the default setting with a channel bandwidth of 1.2288 MHz.

When measuring by the IBW method (FAST ACLR OFF), the channel bandwidth is represented on the screen by two vertical lines to the left and right of the center of the screen. This allows visual inspection of whether the whole power of the signal being measured is within the selected channel bandwidth.

With the time domain method (FAST ACLR ON), the measurement is performed in zero span and the channel limits are not identified in this instance. The analyzer provides all available channel filters for selection of the channel bandwidth entry. Channel bandwidths that deviate from this cannot be set. Should deviating channel bandwidths be necessary, perform the measurement by the IBW method.

Remote: SENS:POW:ACH:BWID 1.2288MHz

ADJ CHAN BANDWIDTH

The ADJ CHAN BANDWIDTH softkey opens a table for defining the channel bandwidths for the adjacent channels.

Software Manual 1007.9800.42 - 06 36

Page 39

The bandwidths can be set independently of each other by overwriting the table from

The channel spacings can be set independently of each other by overwriting the table

S-K83 Configuration of cdma2000 Measurements

Measuring adjacent channel power - ACLR

ACP CHANNEL BW

CHAN BANDWIDTH ADJ 30 kHz

ALT1 30 kHz ALT2 30 kHz

When measuring by the IBW method (FAST ACLR OFF), the bandwidths of the different adjacent channels have to be entered numerically. Since it is common for all adjacent channels to have the same bandwidth, the other channels Alt1 and Alt2 are set to the bandwidth of the adjacent channel when the adjacent channel bandwidth (ADJ) is entered. Thus only one value needs to be entered in the case of equal adjacent channel bandwidths. The procedure is the same for the Alt2 channels (Alternate Channels 2) when the bandwidth of the Alt1 channel (Alternate Channel 1) is entered..

top to bottom.

With the time domain method (FAST ACLR ON), the adjacent channel bandwidths are selected from the list of available channel filters. Use the IBW method for adjacent channel bandwidths that deviate from this.

Remote: SENS:POW:ACH:BWID:ACH 30kHz SENS:POW:ACH:BWID:ALT1 30kHz SENS:POW:ACH:BWID:ALT2..11 30kHz

ADJ CHAN SPACING

The ADJ CHAN SPACING softkey opens a table for defining the channel spacings.

CHANNEL SPACING

CHAN SPACING

ADJ 885 kHz

ALT1 1.98 MHz

ALT2 4.00 MHz

Since the adjacent channels frequently have the same spacing from each other, channel ALT1 and channel ALT2 are set to twice and three times the channel spacing of the adjacent channel, respectively, when the adjacent channel spacing (ADJ) is entered. Thus only one value needs to be entered in the case of identical channel spacings. The procedure for Alt2 channels is similar when the bandwidth of the Alt1 channel is entered.

from top to bottom.

Remote: SENS:POW:ACH:SPAC:ACH 750kHz SENS:POW:ACH:SPAC:ALT1 1.98MHz SENS:POW:ACH:SPAC:ALT2..11 4MHz

Software Manual 1007.9800.42 - 06 37

Page 40

S-K83 Configuration of cdma2000 Measurements

Measuring adjacent channel power - ACLR

ACLR ABS/REL

The ACLR ABS/REL softkey (channel power absolute/relative) toggles between absolute and relative measurement of the power in the channel.

ACLR ABS

The absolute value of the power in the transmission channel and the adjacent channels is displayed in the unit of the Y-axis, e.g. dBm or

BµV.

ACLR REL

In the case of adjacent channel power measurement (NO. OF ADJ CHAN > 0), the level of the adjacent channels is displayed relative to the level of the transmission channel in dBc. With linear scaling of the Y-axis, the relative power (CP/CP

) of the new

ref

channel to the reference channel is displayed. With dB scaling, the logarithmic ratio 10lg (CP/CP

) is displayed. This means that the

relative channel power measurement can also be used for universal adjacent channel power measurements. In this instance each channel is measured separately.

Remote: SENS:POW:ACH:MODE ABS

CHAN PWR / HZ

The CHAN PWR / HZ softkey toggles between measurement of the total power in the channel and measurement of the power in the channel referred to 1 Hz of bandwidth.

The conversion factor is

10 lg



Channel Bandwidth



Remote: CALC:MARK:FUNC:POW:RES:PHZ ON|OFF

POWER MODE

The POWER MODE sub menu allows to change between the normal (CLEAR/WRITE) and the max hold power mode. In the CLEAR/WRITE the channel power and the adjacent channel powers are calculated directly from the current trace. In MAX HOLD mode the power values are still derived from the current trace, but they are compared with a maximum algorithm to the previous power value. The greater value is remained.

Remote: CALC:MARK:FUNC:POW:MODE WRIT|MAXH

Software Manual 1007.9800.42 - 06 38

Page 41

S-K83 Configuration of cdma2000 Measurements

Signal power check – SPECTRUM EM MASK

6.3 Signal power check – SPECTRUM EM MASK

MEAS key or MEAS hotkey

SPECTRUM EM MASK

LIMIT LINE AUTO LIMIT LINE USER RESTORE STD LINES LIST EVALUATION ADJUST REF LVL 30kHz/1MHz TRANSITION

The SPECTRUM EM MASK (Spectrum Emission Mask) softkey starts determination of the cdma2000 signal power at defined offsets from the carrier and compares the power values with that of the spurious emission mask called for in the cdma2000 specification, in the carrier-oriented range between –4 MHz and 4 MHz.

The limits depend on the band class setting (BAND CLASS softkey).

S,1X,C0 :SP EM MASK

Ref -3 dBm Att 5 dB

-10

1RM

-20

CLRWR

-30

-40

-50

-60

-70

-80

-90

-100

Center 833.49 MHz Span 8 MHz800 kHz/

SWT 10 0 ms

LIMIT CHEC K PASS

SEM

Marker 1 [T1 ]

CH PWR -0.52 dBm

-15.55 dB m

833.526057692 MHz

Fig. 10 Measuring the spectrum emission mask

The softkey enables SPECTRUM mode with defined settings:

The following user-specific settings are not modified on the first access following presetting Level parameters

Center Frequency + Frequency Offset All trigger settings

ADJACENT CHAN POWER ON

ACP STANDARD cdma2000 MC1

NO OF ADJ. CHANNELS 0

Software Manual 1007.9800.42 - 06 39

Page 42

10 log 30 kHz for limit values which are not

S-K83 Configuration of cdma2000 Measurements

Signal power check – SPECTRUM EM MASK

FREQUENCY SPAN 8 MHz

SWEEP TIME 100 ms

DETECTOR RMS

To restore adapted measurement parameters, the following parameters are saved on exiting and are set again on re-entering

Level parameters RBW, VBW Sweep time SPAN

this measurement:

Departing from these settings, the analyzer can be operated in many functions featured in SPECTRUM mode. Changes to the RBW and VBW are limited, because they are specified by definition of the limits. If the span is extended beyond 8 MHz, the analyzer automatically switches from the carrier to the 1 MHz channel filter for the frequency range from 4 MHz and higher.

Remote: CONF:CDP:MEAS:ESP Query of results: CALC:LIM:FAIL? Query of results of worst fail: CALC:LIM:ESP:CHECk:X? CALC:LIM:ESP:CHECk:Y?

LIMIT LINE AUTO

The LIMIT LINE AUTO softkey automatically selects the limit line for checking after the power in the useful channel has been determined. If the measurement is performed in CONTINUOUS SWEEP and if the channel power varies from sweep to sweep, it can result in continuous replotting of the limit line.

The softkey is activated on entering the spectrum emission mask measurement.

Remote: CALC:LIM:ESP:MODE AUTO

The definition of the limit line names is described at the LIMIT LINE USER softkey.

The relative limit lines are relative to the power in the channel (dBc). If both relative and absolute limits are defined for a frequency range, the resulting line is determined in the LIMIT LINE AUTO mode according to the "less stringent" criterion. Since these limit lines are of the 'upper limit line' type, this means that the higher limit in the level is used for comparison.

The limit is corrected by 10 log RBW – specified for 30 kHz or 1 MHz bandwidth in the standard.

The band classes 0, 2, 3, 5, 9, 10, 11 and 12 have the same frequency support points. Minor modifications exist for band classes 3, 7 and 10 which means that these band classes have to be defined separately.

Table 12 Band classes 0, 2, 5, 9, 11 and 12

Software Manual 1007.9800.42 - 06 40

Page 43

S-K83 Configuration of cdma2000 Measurements

Signal power check – SPECTRUM EM MASK

Offset frequency Relative limit C2KM0_R.LIM Absolute limit C2KM0_A.LIM RBW

-4.00 MHz -54 dBc -70.2 dBm 30 kHz

-1.98 MHz -54 dBc -70.2 dBm 30 kHz

-1.98 MHz -42 dBc -70.2 dBm 30 kHz

-885 kHz -42 dBc -70.2 dBm 30 kHz

+885 kHz -42 dBc -70.2 dBm 30 kHz

+1.98 MHz -42 dBc -70.2 dBm 30 kHz

+1.98 MHz -54 dBc -70.2 dBm 30 kHz

+4.00 MHz -54 dBc -70.2 dBm 30 kHz

Table 13 Band class 3

Offset frequency

-4.00 MHz -54 dBc 30 kHz

-1.98 MHz -54 dBc +200 dBm 30 kHz

-1.98 MHz -42 dBc -70.2 dBm 30 kHz

-885 kHz -42 dBc -70.2 dBm 30 kHz

+885 kHz -42 dBc -70.2 dBm 30 kHz

+1.98 MHz -42 dBc -70.2 dBm 30 kHz

+1.98 MHz -54 dBc +200 dBm 30 kHz

+4.00 MHz -54 dBc 30 kHz

Table 14 Band class 7

Offset frequency Relative limit C2KM7_R.LIM Absolute limit C2KM7_A.LIM RBW

-4.00 MHz -28.2 dBm 30 kHz

-2.25 MHz +200 dBc -28.2 dBm 30 kHz

-2.25 MHz -54 dBc -70.2 dBm 30 kHz

-1.98 MHz -54 dBc -70.2 dBm 30 kHz

-1.98 MHz -42 dBc -70.2 dBm 30 kHz

-885 kHz -42 dBc -70.2 dBm 30 kHz

+885 kHz -42 dBc -70.2 dBm 30 kHz

+1.98 MHz -42 dBc -70.2 dBm 30 kHz

+1.98 MHz -54 dBc -70.2 dBm 30 kHz

+2.25 MHz -54 dBc -70.2 dBm 30 kHz

+2.25 MHz +200 dBc -28.2 dBm 30 kHz

+4.00 MHz -28.2 dBm 30 kHz

Table 15 Band class 10

Relative limit C2KM3_R.LIM Absolute limit C2KM3_A.LIM RBW

Offset frequency Relative limit C2KMX_R.LIM Absolute limit C2KMX_A.LIM RBW

-4.00 MHz -13 dBm 30 kHz

-1.25 MHz +200 dBc -13 dBm 30 kHz

Software Manual 1007.9800.42 - 06 41

Page 44

S-K83 Configuration of cdma2000 Measurements

Signal power check – SPECTRUM EM MASK

-1.25 MHz -42 dBc -70.2 dBm 30 kHz

-885 kHz -42 dBc -70.2 dBm 30 kHz

+885 kHz -42 dBc -70.2 dBm 30 kHz

+1.25 MHz -42 dBc -70.2 dBm 30 kHz

+1.25 MHz +200 dBc -13 dBm 30 kHz

+4.00 MHz -13 dBm 30 kHz

The limits for band classes 1, 4, 8, 14 and 15 are defined by separate limits. The frequency limit relative to the carrier in particular is not defined at 885 kHz but rather at

1.25 MHz.

Table 16 Band class 1, 4, 8, 14, 15

Offset frequency

-4.00 MHz -50 dBc -70.2 dBm 30 kHz

-1.98 MHz -50 dBc -70.2 dBm 30 kHz

-1.98 MHz -42 dBc -70.2 dBm 30 kHz

-1.25 MHz -42 dBc -70.2 dBm 30 kHz

+1.25 MHz -42 dBc -70.2 dBm 30 kHz

+1.98 MHz -42 dBc -70.2 dBm 30 kHz

+1.98 MHz -50 dBc -70.2 dBm 30 kHz

+4.00 MHz -50 dBc -70.2 dBm 30 kHz

Relative limit C2KM1_R.LIM Absolute limit C2KM1_A.LIM RBW

The limits for band class 6 are derived from the limits of band classes 1, 4 and 8. The additional RBW switching within the ±4 MHz varies. The 1 MHz channel filter is used for the 1 MHz segments – highlighted in gray in the table. The frequency range is divided into three sub segments. The user's sweep time is distributed over the segments as follows (k = filter sweep rate factor):

Segment1: -4.00 ... -2.25 MHz

RBW = 1 MHz k = 850 SWT1 = SWT * 1/10 Segment2: -2.25 ... +2.25 MHz RBW = 30 kHz k = 2.5 SWT2 = SWT * 8/10 Segment3: +2.25 ... 4.00 MHz RBW = 1 MHz k = 850 SWT3 = SWT * 1/10

For larger spans, the sweep time is adjusted so that the three areas are swept at a constant filter sweep rate factor k.

A further distinction in the case of band class 6 is the gradient between 2.25 MHz and

4.00 MHz.

Table 17 Band class 6

Offset frequency

-4.00 MHz -14.75 dBm 1 MHz

-2.25 MHz +200 dBc -13 dBm 1 MHz

-2.25 MHz -50 dBc -70.2 dBm 30 kHz

-1.98 MHz -50 dBc -70.2 dBm 30 kHz

-1.98 MHz -42 dBc -70.2 dBm 30 kHz

-1.25 MHz -42 dBc -70.2 dBm 30 kHz

Relative limit C2KM6_R.LIM Absolute limit C2KM6_A.LIM RBW

Software Manual 1007.9800.42 - 06 42

Page 45

S-K83 Configuration of cdma2000 Measurements

Signal power check – SPECTRUM EM MASK

+1.25 MHz -42 dBc -70.2 dBm 30 kHz

+1.98 MHz -42 dBc -70.2 dBm 30 kHz

+1.98 MHz -50 dBc -70.2 dBm 30 kHz

+2.25 MHz -50 dBc -70.2 dBm 30 kHz

+2.25 MHz +200 dBc -13 dBm 1 MHz

+4.00 MHz -14.75 dBm 1 MHz

LIMIT LINE USER

The LIMIT LINE USER softkey enables input of user-defined limit lines. The softkey opens the menus of the limit line editor, which are known from the basic device. The limit lines created by the user are included in the table for LIMIT LINE MANUAL. The following limit line settings are sensible for mobile station tests:

Trace 1, Domain Frequency , X-Scaling relative, Y-Scaling absolute, Spacing linear, Unit dBm.

Unlike the default limit lines on the device when the analyzer is supplied from the factory that conform to the standard specifications, the user-specified limit line can be specified for the whole frequency range only either relatively (referred to the reference level) or absolutely. The supplied limit lines of the AUTO mode can also be selected. The names are specified next to the type in the tables above and are defined as follows:

? Standard in 3 characters ? Link direction M for mobile station ? Band class, the lowest digit being used in the case of more than one band class ? Power classes A, B, C, where A is the highest power class and is not used for any

power class dependency.

? Type differentiation: A for absolute and R for relative

Example of cdma2000 band class 0, 2, 5, 9, 11-12:

C2K : cdma2000 M : mobile station 0 : lowest of band classes 0,2,5,9,11-12 _ : wildcard for power classes R : relative line ========= C2KM0_R

The limit line names are given in the tables next to the type.

Remote: Refer to Table of softkeys with assignment of IEC-bus commands

RESTORE STD LINES

The RESTORE STD LINES softkey restores the limit lines defined in the standard to the state they were in when the device was supplied. In this way unintended overwriting of the standard lines can be undone.

Remote: CALC:LIM:ESP:REST

Software Manual 1007.9800.42 - 06 43

Page 46

S-K83 Configuration of cdma2000 Measurements

Signal power check – SPECTRUM EM MASK

LIST EVALUATION

The softkey LIST EVALUATION reconfigures the SEM output to a split screen. In the upper half the trace with the limit line is shown. In the lower half the peak value list is shown. For every range of the spectrum emission defined by the standard the peak value is listed. For every peak value the frequency, the absolute power, the relative power to the channel power and the delta limit to the limit line is shown. As long as the delta limit is negative, the peak value is below the limit line. A positive delta indicates a failed value. The results are then colored in red, and a star is indicated at the end of the row, for indicating the fail on a black and white printout.

If the list evaluation is active, the peak list function is not available.

Remote: CALC1:PEAK:AUTO ON | OFF

ADJUST REF LVL

The ADJUST REF LVL softkey adjusts the reference level of the analyzer to the measured total signal power. The softkey becomes active after the first sweep ends with measurement of the occupied bandwidth and thus the total power of the signal becomes known.

Adaptation of the reference level ensures that the signal path of the analyzer is not overloaded and the dynamic response is not restricted by a reference level that is too low.

Remote: SENS:POW:ACH:PRES:RLEV

30kHz/1MHz TRANSITION

The 30kHz/1MHz TRANSITION softkey specifies the offset frequency at which the resolution bandwidth is changed between 30k and 1MHz. The default value is depended on the band class, refer to the tables above.

For multi carrier spectrum emission mask measurement this value can be extended. User specific limit lines shall than be defined and used.

Remote: CALC:LIM:ESP:TRAN <numeric value>

Software Manual 1007.9800.42 - 06 44

Page 47

S-K83 Configuration of cdma2000 Measurements

Measuring bandwidth occupied by the signal - OCCUPIED BANDWIDTH

6.4 Measuring bandwidth occupied by the signal OCCUPIED BANDWIDTH

MEAS key or MEAS hotkey

OCCUPIED BANDWIDTH

The OCCUPIED BANDWIDTH softkey enables measurement of the bandwidth occupied by the signal.

% POWER BANDWIDTH ADJUST SETTINGS ADJUST REF LVL

This measurement determines the bandwidth in which - in the initial state - 99% of the signal power is to be found. The percentage of the signal power that has to be included in the bandwidth measurement can be modified. The bandwidth and the frequency markers for the measurement are displayed in the Marker Info field at the top right corner of the display.

MS,1X,C0 :OCC BANDWDT

Ref -3 dBm Att 5 dB

1RM

-20

LRWR

-30

-40

-50

-60

-70

-80

-90

-100

Center 833.49 MHz Span 4.2 MHz420 kHz/

RBW 30 kHz

VBW 300 kHz

SWT 100 ms

Marker 1 [T1 ]

OBW 1.265384615 MHz Temp 1 [T1 OBW]

Temp 2 [T1 OBW]

-21.87 dBm

833.526057692 MHz

26.45 dBm

32.857307692 MHz

-25.48 dBm

834.122692308 MHz

Fig. 11 Measuring occupied bandwidth

The softkey enables SPECTRUM mode with defined settings:

The following user-specific settings are not modified on the first access following presetting:

Level parameters Center Frequency + Frequency Offset All trigger settings

OCCUPIED BANDWIDTH ON FREQUENCY SPAN 4.2 MHz SWEEP TIME 100 ms RBW 30 kHz

Software Manual 1007.9800.42 - 06 45

Page 48

S-K83 Configuration of cdma2000 Measurements

Measuring bandwidth occupied by the signal - OCCUPIED BANDWIDTH

VBW 300 kHz DETECTOR RMS

To restore adapted measurement parameters, the following parameters are saved on exiting and are set again on re-entering

Level parameters RBW, VBW Sweep time SPAN

this measurement:

Remote: CONF:CDP:MEAS OBAN

Query of results: CALC:MARK:FUNC:POW:RES? OBAN

% POWER BANDWIDTH

The % POWER BANDWIDTH softkey opens a field for entering the percentage of power referred to the total power in the displayed frequency range, by means of which the occupied bandwidth is defined (percentage of total power).

Remote: SENS:POW:BWID 99PCT

ADJUST SETTINGS

The ADJUST SETTINGS softkey adjusts the settings of the analyzer to the specified channel bandwidth for measurement of the occupied bandwidth.

All analyzer settings relevant for power measurement within a certain frequency range (channel bandwidth) such as:

? Frequency span 3 x channel width ? Resolution bandwidth RBW  1/40 of channel bandwidth ? Video bandwidth VBW  3 × RBW ? Detector RMS

are optimized.

The reference level is not affected by ADJUST SETTINGS. It must be set for optimum measurement dynamics so that the maximum signal is close to the reference level.

Adjustment is performed once only but, if necessary, the device settings can again be changed afterwards.

Remote: SENS:POW:PRES OBW

ADJUST REF LVL

The ADJUST REF LVL softkey adjusts the reference level of the analyzer to the measured total signal power.

The softkey becomes active after the first sweep ends with measurement of the occupied bandwidth and thus the total power of the signal becomes known. Adaptation of the reference level ensures that the signal path of the analyzer is not overloaded and the dynamic response is not restricted by a reference level that is too low.

Since the measurement bandwidth is distinctly narrower for power channel measurements than the signal bandwidth, the signal branch can be overloaded, even

Software Manual 1007.9800.42 - 06 46

Page 49

S-K83 Configuration of cdma2000 Measurements

Signal statistics

though the trace is still well below the reference level. When the measured channel power is identical to the reference level, the signal path is not overloaded.

Remote: SENS:POW:ACH:PRES:RLEV

6.5 Signal statistics

MEAS key or MEAS hotkey

SIGNAL STATISTIC

APD ON/OFF CCDF ON/OFF PERCENT MARKER NO OF SAMPLES SCALING

X-AXIS REF LEVEL X-AXIS RANGE Y-AXIS MAX VALUE Y-AXIS MIN VALUE ADJUST SETTINGS

DEFAULT SETTINGS CONT MEAS SINGLE MEAS

The STATISTICS softkey launches measurement of the distribution function of signal amplitudes (complementary cumulative distribution function). The measurement can be switched, using the menu softkey, to amplitude power distribution (APD).

For this measurement, a signal section of settable length is recorded continuously in the zero span and the distribution of the signal amplitudes is evaluated. The record length and the display range of the CCDF can be set using the softkeys of the menu. The amplitude distribution is plotted logarithmically as a percentage of the amount by which a certain level is exceeded, starting with the average value of the signal amplitudes.

In addition, the crest factor, i.e. the difference between the maximum value and the mean power, is output in dB.

Software Manual 1007.9800.42 - 06 47

Page 50

S-K83 Configuration of cdma2000 Measurements

Signal statistics

MS,1X,C0 :SIG NAL STAT

Att 35 dBRef 9.3 dB m

.01

CLRWR

E-3

E-4

E-5

Center 833.49 MHz 1dB/ Mean Pwr + 10 dB

Complementary Cumulative Distribution Function

Samples 100000

RBW 10 MHz

AQT 3.125 ms

Trace 1 Mean -0.35 dBm Peak 4.33 dBm Crest 4.68 dB

Fig. 12 CCDF des cdma2000-Signals

The softkey enables SPECTRUM mode with predefined settings:

The following user-specific settings are not modified so that the adaptation to the device under test is retained:

Reference Level + Rev Level Offset

Center Frequency + Frequency Offset Input Attenuation + Mixer Level

All trigger settings

CCDF ON

RBW 10 MHz

DETECTOR SAMPLE

Departing from these settings, the analyzer can be operated in all functions featured in SPECTRUM mode, i.e. all measurement parameters can be adapted to the requirements of the specific measurement.

Level parameters RBW

NO OF SAMPLES

Remote: CONF:CDP:MEAS CCDF or CALC:STAT:CCDF ON

Query of results: CALC:MARKer:X?

CALC:STAT:RES? MEAN | PEAK |CFA | ALL

MEAN

mean (RMS) measured power in dBm in the period of observation

PEAK measured peak power in dBm

CFAC Determined CREST factor (i.e. ratio of peak power to mean power) in dB

Software Manual 1007.9800.42 - 06 48

Page 51

The overall measurement time is influenced by the selected number of samples as well as

by the resolution bandwidth selected for the measurement, since the resolution bandwidth

S-K83 Configuration of cdma2000 Measurements

Signal statistics

ALL Results of all three named measurements, separated by a comma: <mean

pow>, <peak pow>, <crest factor>

APD ON/OFF

The APD ON/OFF softkey enables the amplitude probability distribution function.

Remote: CALC:STAT:APD ON

CCDF ON/OFF

The CCDF ON/OFF softkey enables the complementary distribution function (complementary cumulative distribution function).

Remote: CALC:STAT:CCDF ON

PERCENT MARKER

When the CCDF function is enabled, the PERCENT MARKER softkey supports positioning of marker 1 by entering a sought probability. This means that the power that will be exceeded with a given degree of probability can be determined in a simple manner. If marker 1 is disabled, it is automatically enabled.

Remote: CALC:MARK:Y:PERC 0...100%

NO OF SAMPLES

The NO OF SAMPLES softkey sets the number of power measurement values that have to be taken into account for the distribution measurement function.

directly affects the sampling rate.

Remote: CALC:STAT:NSAM <value>

SCALING

The SCALING softkey opens a menu in which the scaling parameters for the X and Yaxis can be modified.

X-AXIS REF LEVEL X-AXIS RANGE Y-AXIS MAX VALUE Y-AXIS MIN VALUE ADJUST SETTINGS DEFAULT SETTINGS

Software Manual 1007.9800.42 - 06 49

Page 52

S-K83 Configuration of cdma2000 Measurements

Signal statistics

X-AXIS REF LEVEL

The X-AXIS REF LEVEL softkey changes the level settings of the device and sets the maximum measurable power. The function is identical to that of the REF LEVEL softkey in the AMPT menu.

This value is mapped to the right diagram border for the APD function. For the CCDF

unction, this value is not directly represented in the diagram because the X-axis is

f scaled relative to the measured MEAN POWER.

Remote: CALC:STAT:SCAL:X:RLEV <value>

X-AXIS RANGE

The X-AXIS RANGE softkey changes the level range that has to be covered by the selected distribution sampling function.

The function is identical to that of the RANGE LOG MANUAL softkey in the AMPT menu.

Remote: CALC:STAT:SCAL:X:RANG <value>

Y-UNIT %/ABS

The Y-UNIT % / ABS defines the scaling type of the y–axis. The default value is absolute scaling.

Remote: CALC:STAT:SCAL:Y:UNIT PCT | ABS

Y-AXIS MAX VALUE

The Y-AXIS MAX VALUE softkey sets the upper limit of the displayed probability range.

The values on the Y-axis are normalized, i.e. the maximum value is 1.0. Since the Y-axis is logarithmically scaled, the gap between the maximum and minimum values must be at least one decade.

Remote: CALC:STAT:SCAL:Y:UPP <value>

Y-AXIS MIN VALUE

The Y-AXIS MIN VALUE softkey sets the upper limit of the displayed probability range.

Since the Y-axis is logarithmically scaled, the gap between the maximum and minimum values must be at least one decade. Permissible range of values 0 < value < 1.

Remote: CALC:STAT:SCAL:Y:LOW <value>

ADJUST SETTINGS

The ADJUST SETTINGS softkey optimizes the analyzer level settings according to the measured peak power in order to gain maximum sensitivity of the device.

The level area is set for the APD measurement according to the measured difference between the peak value and the minimum value of the power and, for the CCDF measurement, between the peak value and the mean value of the power in order to achieve maximum power resolution.

Software Manual 1007.9800.42 - 06 50

Page 53

S-K83 Configuration of cdma2000 Measurements

Code-Domain-Measurements an cdma2000-Signalen

In addition, the probability scale of the selected number of measured values is adjusted.

Remote: CALC:STAT:SCAL:AUTO ONCE

DEFAULT SETTINGS

he DEFAULT SETTINGS softkey resets the scaling on the X-axis and the Y-axis to

T the default (PRESET) settings.

X-axis reference level: -20 dBm X-axis range for APD: 100 dB X-axis range for CCDF: Y-axis for upper limit: 1.0 Y-axis for lower limit: 1E6

Remote: CALC:STAT:PRES

20 dB

CONT MEAS

The CONT MEAS softkey starts the acquisition of new sequences of sample data and the calculation of the APD or CCDF trace, depending on the selected measurement. The next measurement is started automatically as soon as the indicated number of measured values has been reached ("CONT

inuous MEASurement").

Remote: INIT:CONT ON; INIT:IMM

SINGLE MEAS

The SINGLE MEAS softkey starts the acquisition of one new sequence of sample data and the calculation of the APD or CCDF trace, depending on the selected measurement. The measurement finishes after the displayed number of measured values has been reached.

Remote: NIT:CONT OFF; INIT:IMM

6.6 Code-Domain-Measurements an cdma2000-Signalen

Application Firmware R&S FS-K83 provides a code domain analyzer. With its help, the measurements called for in the cdma2000 specification in respect of the power of the different codes and code channels (bunched codes) can be performed. In addition, the modulation quality (EVM and RHO factor), frequency error and trigger-to-frame time, and also peak code domain error are determined. Constellation analyses and bit stream analyses are similarly available. The calculation of the timing and phase offsets of the channels for the pilot can be enabled (refer to the TIME/PHASE softkey). The observation period can be adjusted in multiples of the power control group (PCG) by means of the CAPTURE LENGTH softkey. Basically, there are the following results classes for the analyses:

Software Manual 1007.9800.42 - 06 51

Page 54

S-K83 Configuration of cdma2000 Measurements

Code-Domain-Measurements an cdma2000-Signalen

? Results that take the total signal into account over the whole period of observation

(all PCGs)

? Results that take the total signal into account over a power control group (PCG) ? Results that take one channel into account over the whole period of observation

(all PCGs)

? Results that take one channel into account over a power control group (PCG

The analyses of the code domain analyzer are performed on a split screen. The screen is divided into two halves for this.

The upper screen (Screen A) displays analyses which vary with respect to the codes. The lower screen (Screen B) displays all other analyses.

Table 18 Overview of the analyses

Code Dimension Time dimension Mapping

Analysis on Screen A Total signal One channel All PCGs one PCG I or Q or

overview

Code-domain-power   I/Q/Overview Code-domain-error-power   I/Q/Overview

Kanaltabelle   Not used

Analysis on Screen B Total signal One channel All PCGs eine PCG I or Q

Result summary    Not used

Power versus PCG   I/Q

Power versus symbol   I/Q

Composite EVM (Modulation accuracy)

Composite constellation   Not used

Peak-code-domain-error   I/Q

Symbol constellation   I/Q

Symbol EVM   I/Q

Bitstream   I/Q

  Not used

Depending on the symbol rate of a code channel, the code channel will have a different spreading factor and a different number of symbols per power control group. The relationship can be seen in the table below.

Table 19 Relationship between symbol rate, spreading factor and number of symbolsl

Data rate [ksps] Spreading factor Symbols per PCG

19.2 64 24

38.4 32 48

76.8 16 96

153.6 8 192

307.2 4 384

614.4 2 768

Software Manual 1007.9800.42 - 06 52

Page 55

S-K83 Configuration of cdma2000 Measurements

Code-Domain-Measurements an cdma2000-Signalen

With analyses on the lower screen where symbols are entered along on the X-axis, the maximum number of symbols varies depending on the symbol rate of the selected code channel.

The code channel and power control group for which a result is to be displayed is selected using the SELECT CHANNEL and SELECT PCG softkeys. Let us assume that the code channel 1.32 (Walsh code number 1 for spreading factor 32) and PCG 2 have been selected. On screen A, the Code Domain Power analysis is relative and on Screen B the symbol EVM analysis is active. Screen A will thus display the Code Domain Power analysis of PCG 2. In this instance code channel 1.32 is shown selected in red. In the lower half of the screen, the EVM symbol for analysis of code channel 1.32 in PCG 2 with 48 values can be seen.

The code domain analyzer can be operated in two modes. In CODE CHAN AUTOSEARCH mode, it performs an automatic search for the following cdma2000 and 1xEV-DV channels:

Table 20 Channels in the cdma2000 and 1xEV-DV system

Channel Abbreviation Mapping Channel number

and spreading factor

Reverse Pilot Channel PICH I 0.32

Enhanced Access Channel

Reverse Common Control Channel CCCH Q 2.8

Reverse Dedicated Control Channel DCCH I 8.16

Reverse Acknowledgment Channel (1xEV-DV) ACKCH Q 16.64

Reverse Channel Quality Indicator Channel2(1xEVDV)

Reverse Fundamental Channel FCH Q 4.16

Reverse Supplemental 1 Channel S1CH Q 1.2 or 2.4

Reverse Supplemental 2 Channel S2CH I 2.4 or 6.8

EACH Q 2.8

CQICH I/Q 12.16

In the other mode, CODE CHAN PREDEFINED, the user has the option of determining the active code channels in the signal by means of selectable and editable tables. The automatic channel search is then replaced by this user input.

Since the EACH has the same mapping as well as the same channel number and spreading factor as the CCCH, it is not possible to make a distinction between them in the CODE CHAN AUTOSEARCH. In this case, both the EACH and CCCH are output.

The CQICH has mapping I if the FCH is available, otherwise it is output on the Q branch.

Software Manual 1007.9800.42 - 06 53

Page 56

S-K83 Configuration of cdma2000 Measurements

Code-Domain-Measurements an cdma2000-Signalen

6.6.1 Presentation of analyses - RESULTS

The RESULTS hotkey or the MEAS hotkey and then the CODE DOM ANALYZER

CODE DOM POWER CODE DOM ERROR COMPOSITE EVM PEAK CODE DOMAIN ERR POWER VS HALF SLOT RESULT SUMMARY CHANNEL TABLE SYMBOL CONST SYMBOL EVM BITSTREAM COMPOSITE CONST POWER VS SYMBOL SELECT I/Q SELECT

CAPTURE LENGTH SET COUNT

SET TO ANALYZE SELECT CHANNEL SELECT HALF SLOT

ADJUST REF LVL

The RESULTS hotkey opens the submenu for choosing the analysis. In the main menu, the most important analyses are offered for rapid access, and advanced analyses are available in the side menus.

To go to the far side menu, press the NEXT hardkey twice.

You can choose from the following analyses:

CODE DOM POWER Code domain power analysis, depending on the CODE

PWR ABS/REL softkey, in relative or absolute scaling CODE DOM ERROR Code domain error-power analysis COMPOSITE EVM Square difference between the test signal and the ideal

reference signal COMPOSITE CONST Composite constellation analysis RESULT SUMMARY Tabular results CHANNEL TABLE Channel occupancy table PEAK CODE DOMAIN ERR Projection of the error between the test signal and the

ideal reference signal to the spreading factor of the

channel type and subsequent summation over the

symbols of each PCG of the differential signal POWER VS CHIP Power of the total signal of a PCG at chip level POWER VS SYMBOL Power of the selected channel and the selected PCG

over all symbols BITSTREAM Display of determined bits

Software Manual 1007.9800.42 - 06 54

Page 57

S-K83 Configuration of cdma2000 Measurements

Code-Domain-Measurements an cdma2000-Signalen

SYMBOL CONST Symbol constellation analysis SYMBOL EVM Error vector magnitude analysis

The SELECT I/Q softkey determines whether the I or Q branch is to be analyzed.

An den Übersetzer: Die folgenden 2 Absätze sind wie bei K82, nur umformatiert.

By entering a channel number (SELECT CHANNEL softkey), a channel can be selected for the POWER VS PCG, SYMBOL CONST, SYMBOL EVM, BITSTREAM and POWER VS SYMBOL analyses.

Using the SELECT PCG softkey, a power control group can be selected for the CODE DOM POWER, CODE ERROR, CHANNEL TABLE, SYMB CONST, SYMBOL EVM, BITSTREAM, COMPOSITE CONST and POWER VS SYMBOL analyses.

You can use ADJUST REF LVL to obtain optimum matching of the device reference level to the signal level.

The following user-specific settings are not modified so that the adaptation to the device under test is retained:

Level parameters Center Frequency + Frequency Offset

The following user-specific settings are transferred as follows: External trigger sources are retained, while all other trigger sources result in Free Run mode.

Additional trigger settings are retained.

To restore adjusted level parameters, they are saved on exiting the code domain analyzer and reset on reentering the code domain analyzer.

The most important measurement settings, which are based on the displays, are grouped above the diagram:

MS,1X,C1 :CODE POWER SR 38.4 ksps

Chan 0.32

dB TOT CF 1.85125 GHz PCG 2

Fig. 13 Function fields of diagrams

The meanings are as follows:

1st column:

Mobile radio system (mobile station

MS,1X

cdma2000 1X)

Name of selected analysis: e.g.

Band class (Class 0-12) abbreviated e.g.

C1 for 1900 MHz band CODE POWER

(blank line) Einheit der y-Achse e.g.

dB TOT for relative to total power

2st column

(blank line) (blank line) Center frequency of signal: e.g.

3st column:

Symbol rate of selected channel: e.g.

Walsh code and spreading factor of

CF 1.85125 GHz

SR 38.4 ksps Chan 0.32

e.g.

selected channel

Software Manual 1007.9800.42 - 06 55

Page 58

S-K83 Configuration of cdma2000 Measurements

Code-Domain-Measurements an cdma2000-Signalen

CODE DOM POWER

The CODE DOM POWER softkey selects the Code Domain Power (CDP) analysis with relative scaling.

With Code Domain Power analysis, allowance is made for the total signal over precisely one power control group. The power values of the different codes are

etermined and plotted in a diagram. In this diagram, the x-axis is the code number

d and the y-axis is a logarithmic level axis. The number of codes on the x-axis, which corresponds to the base spreading factor, can be set by means of the BASE SF 16/32/64 softkey. The power control group to be analyzed can be set by means of the SELECT PCG softkey. The SELECT I/Q softkey is used to select the branch to be analyzed.

The power is referred in the default setting to the total power. This power reference was selected since the power control always affects all code channels including the pilot. The power reference can be switched to the power of the pilot using the POWER REF softkey; this allows the power of each code channel to be analyzed relative to the pilot. Power control does not change these relative results.

Apart from these relative displays, there is also the option of specifying the absolute power. It can be enabled by means of the CODE PWR ABS/REL softkey. Accordingly, the unit of the y-axis is dBm for absolute analysis, dB PICH for relative analysis with respect to the pilot, and dB TOT for relative analysis with respect to the total power.

The power values of the active and unassigned codes are displayed in different colors: Additionally, codes with alias power may also occur. In this case a code contains power components which result from a higher spreading factor than the base spreading factor.

The following color coding is defined:.

? Yellow Active channel ? cyan Unassigned code (neither on I nor Q branch) ? Light blue Alias power from higher spreading factor ? Light green Quasi-inactive code (the code on the analyzed branch is inactive,

but the code with the same code number on the other branch belongs to an active channel)

If the code domain power analysis indicates alias power, the highest base spreading factor should be set using the BASE SF softkey.

A channel in CODE CHAN AUTOSEARCH (Automatic Channel Search mode) is termed active when the minimum power entered by the user (refer to the INACT CHAN THRESHOLD softkey) is exceeded and if the signal-to-noise ratio is sufficient. In CODE CHAN PREDEFINED mode, each code channel contained in the user-defined channel table is identified as active.

Software Manual 1007.9800.42 - 06 56

Page 59

S-K83 Configuration of cdma2000 Measurements

Code-Domain-Measurements an cdma2000-Signalen

The code domain power analysis supports two sorting orders: the Hadamard and BitReverse order. With the Hadamard order the codes are displayed in ascending order: 0.32, 1.32, 2.32, ..., 31.32. The power in the code is shown for each code. If a code channel in the signal is overlapped by several codes, the individual power of the codes is displayed. If the total power of this bunched code channel is to be read off, the BitReverse order must be used.

S,1X,C0 :CODE POWER

CF 833.49 MHzdB TOT MAP I PCG 3

-7

Ref

-14

10.0

-21

dBm

-28

Att

Att 4

0dB

-42

-49

-56

CLRWR

-63

Start Code 0 4Code/ Stop Code 31

Fig. 14CDP diagram in Hadamard order

R76.8ksps

Chan 8.16

arker 1 [T1 ]

SR 307.2 ksps Code 6

-16.99 dB

SGL

TRG

With the BitReverse order, the sorting sequence of the channels is different since the code numbers are interpreted in reverse order at bit level. This results in the following code sequence for base spreading factor 32: 0.32, 16.32, 8.32, ... 15.32, 31.32 (refer to Chapter Fehler! Verweisquelle konnte nicht gefunden werden.). The codes of a bunched code channel are now adjacent to each other and the total power of the code channel is displayed.

MS,1X,C0 :CODE POWER

CF 833.49 MHzdB TOT

-7

Ref

-14

10.0

-21

dBm

-28

Att

Att 40 dB

40 dB

-35

-42

-49

-56

CLRWR

-63

Start Code 0 4Code/ Stop Code 31

Fig. 15 CDP diagram in BitReverse order for the same signal

SR 76.8 ksps Chan 8.16 MAP I PCG 3

Marker 1 [T1 ]

SR 307.2 ksps Code 6

-7.95 dB

SGL

TRG

By entering a channel number (refer to the SELECT CHANNEL softkey), a channel can be highlighted for more detailed displays. The codes of these channels are displayed in red.

The selection of more detailed analyses (e.g. SYMBOL CONSTELLATION) for unassigned codes is possible but not meaningful, since the results are not valid.

To give an overview of the two code domain power measurements in addition to the separate analysis of the I and Q branches, a CODE DOM OVERVIEW softkey, which can be used to switch to Overview mode, is provided in the SETTINGS menu. In Overview mode, the I branch is analyzed on Screen A and the Q branch on Screen B.

Software Manual 1007.9800.42 - 06 57

Page 60

S-K83 Configuration of cdma2000 Measurements

Code-Domain-Measurements an cdma2000-Signalen

MS,1X,C0 :CODE POWER

CF 833.49 MHzdB TOT

Ref

-14

0.0

-21

dBm

-28

Att

Att 40 dB

40 dB

-35

-42

-56

CLRWR

-63

tart Code 0

CODE POWER

CF 833.49 MHzdB TOT MAP Q PCG 3

-7

Ref

-14

10.0

-21

dBm

-28

Att

Att 40 dB

40 dB

-35

-42

-49

-56

LRWR

-63

Start Code 0 4Code/ Stop Code 31

SR 76.8 ksps Chan 8.16 MAP I PCG 3

Marker 1 [T1 ]

SR 307.2 ksps Code 6

Code/

Fig. 16 CDP diagram in BitReverse order in overview mode

-7.95 dB

top Code 31

TRG

Remote: CALC1:FEED XPOW:CDP:RAT (relative)

CALC1:FEED XPOW:CDP (absolute)

CODE DOM ERROR

The CODE DOM ERROR softkey selects the analysis of the code domain error power (CDEP).

The code domain error-power measurement outputs the power value difference between the measured and ideally generated reference signal for each code in dB. Since it is an error power, active and inactive channels can be assessed jointly at a glance with this analysis.

With the code domain error-power analysis, allowance is made for the total signal over precisely one power control group and the error powers are determined for the different codes and plotted in a diagram. In this diagram, the x-axis is the code number and the y-axis is a logarithmic level axis, dB being the unit. The number of codes on the x-axis, which corresponds to the base spreading factor, can be set by means of the BASE SF 16/32/64 softkey. The power control group to be analyzed can be set by means of the SELECT PCG softkey. The SELECT I/Q softkey is used to select the branch to be analyzed.

The following color coding is defined:

Software Manual 1007.9800.42 - 06 58

Page 61

If the code domain power analysis indicates alias power, the highest base spreading

S-K83 Configuration of cdma2000 Measurements

but the code with the same code number on the other branch belongs to an active channel)

factor should be set using the BASE SF softkey.

The code domain error-power analysis supports two sorting orders: the Hadamard and BitReverse order. With the Hadamard order the codes are displayed in ascending order: 0.32, 1.32, 2.32 ... 31.32. The power in the code is shown for each code.

MS,1X,C0 :CODE ERROR

CF 833.49 MHzdB

-7

Ref

-14

10.0

-21

dBm

-28

Att

Att 40 dB

40 dB

-35

-42

-49

-56

CLRWR

-63

Start Code 0 4Code/ Stop Code 31

Fig. 17 CDEP diagram in Hadamard order

SR 76.8 ksps Chan 8.16 MAP I PCG 3

Marker 1 [T1 ]

SR 307.2 ksps Code 6

-56.89 dB

SGL

TRG

With the BitReverse order, the sorting sequence of the channels is different since the code numbers are interpreted in reverse order at bit level. This results in the following code sequence for base spreading factor 32: 0.32, 16.32, 8.32, ..., 15.32, 31.32 (refer to Chapter Fehler! Verweisquelle konnte nicht gefunden werden.). Unlike code domain power analysis, with code domain error-power analysis no power values of the bunched code channel are displayed since the code domain error-power analysis is used for error powers.

Software Manual 1007.9800.42 - 06 59

Page 62

S-K83 Configuration of cdma2000 Measurements

S,1X,C0 :CODE ERROR

CF 833.49 MHzdB

-7

Ref

-14

10.0

-21

-28

Att

Att 4

0dB

-42

-49

-56

CLRWR

-63

Start Code 0 4Code/ Stop Code 31

R76.8ksps Chan 8.16 MAP I PCG 3

arker 1 [T1 ]

SR 307.2 ksps Code 6

-56.89 dB

SGL

TRG

Fig. 18 CDEP diagram in BitReverse order for the same signal

By entering a channel number (refer to the SELECT CHANNEL softkey), a channel can be highlighted for more detailed displays. The codes of these channels are displayed in red.

The selection of more detailed analyses (e.g. SYMBOL CONSTELLATION) for unassigned codes is possible but not meaningful, since the results are not valid.

Remote: CALC<1>:FEED XPOW:CDEP

COMPOSITE EVM

The COMPOSITE EVM softkey selects the analysis of the error vector magnitude (EVM) over the total signal (modulation accuracy).

The composite EVM measurement determines the square root from the error square between the real and imaginary components of the test signal and of an ideally generated reference signal (EVM referred to the total signal).

The measurement result consists of one composite EVM measurement value per power control group (PCG). The number of PCGs can be set by means of the CAPTURE LENGTH softkey. Accordingly, the COMPOSITE EVM analysis takes into account the total signal over the whole period of observation.

Only the channels detected as being active for this channel type are used to generate the ideal reference signal. In the case of a channel which is not detected as being active on account of, say, low power, the difference between the test/reference signal and the composite EVM is therefore very large (refer to the figure).

Software Manual 1007.9800.42 - 06 60

Page 63

S-K83 Configuration of cdma2000 Measurements

COMPOSITE EVM

CF 833.49 MHz% PCG 3

Ref

10.0

dBm

Att

Att 40 dB

40 dB

CLRWR

0 1PCG/ 4

Marker 1 [T1 ]

1.149 % PCG 2

Fig. 19 Display of Composite EVM when all channels contained in the signal were detected as active

COMPOSITE EVM

CF 833.49 MHz% PCG 3

Ref

10.0

dBm

Att

Att 40 dB

40 dB

CLRWR

0 1PCG/ 4

Fig. 20 Display of Composite EVM when one code channel was not detected as active

Marker 1 [T1 ]

20.534 % PCG 2

As with the selection of a code channel in the CDP or CDEP diagram, there is the option of selecting a PCG in the Composite EVM diagram. Selection is performed by entering the PCG number (refer to the SELECT PCG softkey). The selected PCG is displayed as a red bar.

Remote: CALC2:FEED XTIM:CDP:MACC

PEAK CODE DOMAIN ERR

The PEAK CODE DOMAIN ERR softkey selects the analysis of the peak code domain error.

With the peak code domain error measurement, there is a projection of the error between the test signal and the ideally generated reference signal to the base spreading factor. The unit on the y-axis is dB. The base spreading factor is selected using the BASE SF 16/32/64 softkey. The SELECT I/Q softkey is used to select the branch to be analyzed.

The measurement result consists of one numerical value per PCG for the peak code domain error. The number of PCGs can be set by means of the CAPTURE LENGTH softkey. Accordingly, the peak code domain-error analysis takes into account the total signal over the whole period of observation.

Software Manual 1007.9800.42 - 06 61

Page 64

S-K83 Configuration of cdma2000 Measurements

Only the channels detected as being active are used to generate the ideal reference signal for the peak code domain error. If an assigned code is not detected as being active on account of low power, the difference between the test signal and the reference signal is very large. The R&S FS-K83 therefore displays a peak code domain error that is too high (refer to figure).

PEAK CODE DOMAIN ERR

CF 833.49 MHzdB MAP I PCG 3

-7

Ref

-14

10.0

-21

dBm

-28

Att

Att 40 dB

40 dB

-35

-42

-49

-56

CLRWR

-63

0 1PCG/ 4

SF 32

Fig. 21Peak code domain error in the event of all channels contained in the signal being detected as active

PEAK CODE DOMAI N ERR

CF 833.49 MHzdB MAP I PCG 3

-7

Ref

-14

10.0

-21

dBm

-28

Att

Att 40 dB

40 dB

-35

-42

-49

-56

CLRWR

-63

0 1PCG/ 4

SF 32

Fig. 22 Peak code domain error in the event of one channel not being detected as active

Marker 1 [ T1 ]

Marker 1 [T1 ]

-55.15 dB PCG 4

-16.63 dB PCG 4

As with the selection of a code channel in the CDP or CDEP diagram, there is the option of selecting a PCG in the peak code domain-error diagram. Selection is performed by entering the PCG number (refer to the SELECT PCG softkey). The selected PCG is displayed as a red bar.

Remote: CALC2:FEED XTIM:CDP:ERR:PCD

POWER VS PCG

The POWER VS PCG softkey enables the POWER versus power control group (PCG) analysis.

The absolute power for the selected channel is displayed as an average for each PCG. The unit on the y-axis is dBm.

The measurement result consists of one numerical value per PCG for the power value. The number of PCGs can be set by means of the CAPTURE LENGTH softkey. Accordingly, the POWER VS PCG analysis allows for one code channel over the whole period of observation.

Software Manual 1007.9800.42 - 06 62

Page 65

igger must be used to ensure that the beginning of a power control

S-K83 Configuration of cdma2000 Measurements

he external t

T group is always detected correctly in the case of a power-controlled signal.

POWER VS PC G

CF 833.49 MHzdBm

Ref

-4

10.0

10.0 dBm

dBm

Att

Att 40 dB

40 dB

1 CLRWR

-11

-18

-25

-32

-39

-46

-53

0 1PCG/ 4

SR 76.8 ksps Chan 8.16 MAP I PCG 3

Marker 1 [T1 ]

-13.20 dBm PCG 0

Fig. 23 Power versus PCG für einen belegten Kanal mit Leistungsregelung

As with the selection of a code channel in the CDP or CDEP diagram, there is the option of selecting a PCG in the Power versus PCG diagram. Selection is performed by entering the PCG number (refer to the SELECT PCG softkey). The selected PCG is displayed as a red bar.

Remote: CALC2:FEED XTIM:CDP:PVSL

RESULT SUMMARY

The RESULT SUMMARY softkey selects the numerical analysis of all measurement results. The analysis has the following structure:

RESULT SUMMARY TAB LE

CF 833.49 MHz MAP I PCG 3

Total PWR -0.26 dBm Carr Freq Error -1.13 kHz

Ref

Pilot PWR -11.21 dBm Carr Freq Error -1.36 ppm

10.0

RHO 0.99989 Chip Rate Error -1.34 ppm

dBm

Composite EVM 1.06 % Trg to Frame 383.776751 ns

Att

Pk CDE (SF 32/I) -56.29 dB Active Channels 5

40 dB

IQ Imbal/Offset 0.04/0.83 %

Symbol Rate 76.8 ksps Timing Offset -0.10 ns

Channel.SF 8.16 Phase Offset 0.66 mrad

CLRWR

Channel Power Rel -13.95 dB Channel Power Abs -14.21 dBm Symbol EVM 0.91 % rms Symbol EVM 2.56 % Pk

RESULTS FOR PCG 3: GLOBAL RESULTS:

CHANNEL RESULTS: Mapping I

SR 76.8 ksps Chan 8.16

Bild 24 Result summary

The top left-hand part shows measurement results which affect the total signal (i.e. all channels) for the power control group selected using the SELECT PCG softkey:

Total Power: Specifies the total power of the signal. Pilot Power: Specifies the pilot power. RHO:

Specifies the RHO quality parameter. According to the cdma2000 specification, RHO is the normalized, correlated power between the measured and the ideally generated reference signal. The

Software Manual 1007.9800.42 - 06 63

Page 66

S-K83 Configuration of cdma2000 Measurements

cdma2000 specification requires that only the pilot channel be input during measurement of RHO.

Composite EVM:

The Composite EVM value is the difference between the test signal and the ideal reference signal (refer to the COMPOSITE EVM softkey).

k CDE:

The PEAK CODE DOMAIN ERR measurement specifies a projection of the difference between test signal and ideal reference signal to the selected base spreading factor (refer to the PEAK CODE DOMAIN ERR and SELECT BASE SF softkeys). The base spreading factor, for which the projection is

made, is specified next to the measured value. IQ Imbalance: IQ imbalance of the signal in % IQ Offset: DC offset of the signal in % The top right-hand part shows measurement results which affect the total signal (i.e. all

channels) for the whole period of observation (i.e. all PCGs): Carrier Freq Error:

Specifies the frequency error referred to the set center frequency of

the analyzer. The absolute frequency error is the sum of the

frequency error of the analyzer and that of the device under test.

Differences of more than 2.0 kHz between transmitter and receiver

frequency impair synchronization of the CDP measurement. If at all

possible, the transmitter and the receiver should be synchronized

(refer to the chapter "Getting Started"). The frequency error is

available in Hz, and in ppm referred to the carrier frequency. Chip Rate Error:

Specifies the chip rate error (1.2288 Mcps) in ppm. A large chip

rate error results in symbol errors and, consequently, possibly in

the CDP measurement not being able to perform

synchronization. This measurement result is also valid if the

analyzer was not able to synchronize to the cdma2000 signal. Trigger to Frame:

This measurement result reproduces the timing offset from the

beginning of the acquired signal section until the start of the first

PCG. In the case of triggered data acquisition, this corresponds

to the timing offset frame-trigger (+ trigger-offset) - start of the

first PCG. If the analyzer was not able to synchronize to the

cdma2000 signal, the value of Trg to Frame is not meaningful. If

the FREE RUN trigger is selected, dashes (---) are displayed. No of Active Chan

Specifies the number of active channels which were found in the

signal. The lower part of the RESULT SUMMARY shows the results of measurements on the

selected channel and the selected PCG. Symbol Rate: Symbol rate with which the channel is transmitted. Mapping: Indicates whether the I or Q branch is being analyzed. Channel.SF: Number of channel and its associated spreading factor. Timing Offset:

Timing offset between the selected channel and the pilot channel.

This measurement can be enabled by means of the TIME/PHASE

softkey.

Software Manual 1007.9800.42 - 06 64

Page 67

Relative channel power (referred to the pilot or total power,

softkey) and absolute

S-K83 Configuration of cdma2000 Measurements

Phase Offset:

Phase offset between the selected channel and the pilot channel.

This measurement can be enabled by means of the TIME/PHASE

oftkey.

s Chan Pow rel. / abs.:

depending on the POWER REF TOT/PICH

channel power. Symbol EVM Pk / rms:

Peak or mean value of the results of the error vector magnitude

measurement (refer to the SYMBOL EVM softkey). The

measurement provides information about the EVM of the

selected channel for the selected PCG at symbol level. If the MAX/MIN HOLD or AVERAGE trace statistics are enabled using the TRACE

hardkey, the values are interlinked accordingly from one analysis to the next. The Active Channels, Symbol Rate, Channel.SF and Mapping values are not statistically interlinked. In the case of the values which have an expectation value of 0 (Carr Freq Error, Trg to Frame, IQ Imbal/Offset, Timing and Phase Offset), the maximum value is formed in such a way that the maximum is sought among the absolute values and then output with sign. In this way it is possible to determine the largest deviation including the direction of the deviation. The minimum value is formed in the same way.

CHANNEL TABLE

The CHANNEL TABLE softkey selects the channel occupancy table analysis.

The channel occupancy table can contain a maximum of 128 entries, corresponding to the highest base spreading factor 64 for both I and Q branch. The Channel Occupancy Table analysis makes allowance for the total signal over precisely one power control group. The power control group to be analyzed can be set by means of the SELECT PCG softkey.

The channels are listed in ascending code number order (within a code number: first I and then Q branch). The unassigned codes are therefore always located at the end of the table.

MS,1X,C0 :CH ANNEL TAB

CF 833.49 MHz

Type Chan.SF Symb Rate Map Status Pwr Abs Pwr Rel T Offs Ph Offs

PICH 0.32 38.4 I active -11.21 -10.95 0.00 0.00

Ref

S1CH 1.2 614.4 Q active -2.21 -1.95 0.15 -0.14

10.0

S2CH 2.4 307.2 I active -8.21 -7.95 -0.02 0.44

dBm

FCH 4.16 76.8 Q active -11.22 -10.96 0.15 -0.64

Att

DCCH 8.16 76.8 I active -14.21 -13.95 -0.10 0.66

40 dB

---- 0.32 38.4 Q qinact -56.88 -56.62 -.-- -.--

---- 1.32 38.4 I qinact -57.54 -57.28 -.-- -.--

---- 2.32 38.4 Q qinact -58.64 -58.38 -.-- -.--

---- 3.32 38.4 I qinact -14.21 -13.95 -.-- -.--

CLRWR

---- 4.32 38.4 I qinact -56.55 -56.29 -.-- -.--

---- 5.32 38.4 I qinact -59.08 -58.82 -.-- -.--

---- 6.32 38.4 Q qinact -59.04 -58.78 -.-- -.--

Fig. 25 Channel table

ksps dBm dB ns mrad

Chan 8.16 MAP I PCG 3

Max T 0.15 ns @ 1.2 Max Ph 0.66 mrad @ 8.16

SGL

TRG

Software Manual 1007.9800.42 - 06 65

Page 68

S-K83 Configuration of cdma2000 Measurements

The following parameters are determined for the channels by means of the CDP measurement:

Type: Type of channel Chan.SF:

Number of the spreading code of the channel (0 to [spreading factor-1]) including the spreading factor of the channel in Chan.SF notation.

Symb Rate: Symbol rate with which the channel is transmitted (19.2 ksps to 614.4 ksps)

Mapping: Mapping of the channel (I or Q branch) Status: Displays the status. Unassigned codes are identified as inactive channels. Pwr Abs / Pwr Rel:

Specifies the absolute and relative power (referred to the PICH or total power of the signal) of the channel.

T Offs:

Timing offset. Timing offset between this channel and the pilot channel can be enabled by means of the TIME/MEAS softkey.

Ph Offs: Phase offset. Phase offset between this channel and the pilot channel can

be enabled by means of the TIME/MEAS softkey.

A data channel is referred to as active in CODE CHAN AUTOSEARCH mode when it exhibits the minimum power (refer to the INACT CHAN THRESHOLD softkey) and a sufficient signal-to-noise ratio. In CODE CHAN PREDEFINED mode, all code channels contained in the channel table are marked as active.

If the TIME/PHASE softkey is set to ON, the maximum value of the TIMING and PHASE OFFSET is displayed together with the associated channel on the right-hand side above the channel table. Since the TIMING and PHASE values of each active channel can be either negative or positive, the absolute values are compared and the maximum is then displayed with the original sign.

Remote: CALC1:FEED XTIM:CDP:ERR:CTAB

SYMBOL CONST

The SYMBOL CONST softkey selects the analysis of the constellation diagram at symbol level.

Analysis of the symbols is performed for the selected channel (SELECT CHANNEL softkey) and the selected PCG (SELECT PCG softkey). This means that this analysis makes allowance for results of a channel for a power control group.

The SELECT I/Q softkey is used to select the branch to be analyzed.

Evaluation of the constellation diagram is possible for unassigned codes, but the results are meaningless since unassigned code channels do not contain data.

For orientation, the unit circle is added to the figure.

Software Manual 1007.9800.42 - 06 66

Page 69

S-K83 Configuration of cdma2000 Measurements

Fig. 26 Symbol constellation diagram

Remote: CALC2:FEED XTIM:CDP:SYMB:CONS

SYMBOL EVM

The SYMBOL EVM softkey selects the analysis for the symbol error vector magnitude. Analysis of the EVM is performed for the selected channel (SELECT CHANNEL softkey) and the selected PCG (SELECT PCG softkey). This means that this analysis makes allowance for results of a channel for a power control group.

Evaluation of the symbol error vector magnitude for unassigned codes is possible, but the results are not valid.

SYMBOL EVM

CF 833.49 MHz%

Ref

10.0

dBm

Att

Att 40 dB

40 dB

CLRWR

0 95

Fig. 27 Error vector magnitude for a PCG of a channel

SR 76.8 ksps Chan 8.16 MAP I PCG 3

12 Sym/

Marker 1 [T1 ]

2.564 %

Symbol 13

Remote: CALC2:FEED XTIM:CDP:SYMB:EVM

BITSTREAM

The BITSTREAM softkey selects the "Bit Stream” analysis.

Analysis of the determined bits is performed for the selected channel (SELECT CHANNEL softkey) and the selected PCG (SELECT PCG softkey). This means that this analysis makes allowance for results of a channel for a power control group. The SELECT I/Q softkey is used to select the branch to be analyzed.

Depending on the symbol rate of the channel, a minimum of 24 and a maximum of 768 symbols can be contained in a power control group. With BPSK-modulated channels, a symbol always consists of one bit.

Software Manual 1007.9800.42 - 06 67

Page 70

S-K83 Configuration of cdma2000 Measurements

BPSK-Q

PSK-I

Fig. 28 Constellation diagram for BPSK-I and BPSK-Q including bit values

Depending on the radio configuration and the channel type, there are BPSK-I or BPSKQ-modulated channels in the cdma2000 system.

An analysis of the bit stream for unassigned codes is indeed possible, but since the results are not meaningful on account of the missing data, all bits are identified as invalid ("-") in this case.

The marker can be used to scroll in the bit stream.

Ref

10.0

10.0 dBm

dBm

Att

Att 40 dB

40 dB

BITSTREAM

CF 833.49 MHz

0 10000100011000010011100101010110 32 00011011110100110111001000101000 64 01010110100111111011001001001011

SR 76.8 ksps Chan 8.16 MAP I PCG 3

Fig. 29 Demodulated bits for a PCG of the channel

Remote: CALC2:FEED XTIM:CDP:BSTR

Software Manual 1007.9800.42 - 06 68

Page 71

S-K83 Configuration of cdma2000 Measurements

COMPOSITE CONST

The COMPOSITE CONST softkey selects the analysis of the constellation diagram at chip level.

With the COMPOSITE CONST, the total signal is taken into account over the selected power control group (SELECT PCG softkey).

A constellation point is plotted for each of the 1536 chips in the diagram.

For orientation, the unit circle is added to the figure.

Fig. 30 Composite constellation diagram

Remote: CALC2:FEED XTIM:CDP:COMP:CONS

POWER VS SYMBOL

The POWER VS SYMBOL softkey selects the Power versus Symbol analysis. The analysis outputs the absolute power in dBm at each symbol time for the selected channel (SELECT CHANNEL softkey) and the selected PCG (SELECT PCG softkey). This means that this analysis makes allowance for results of a channel for a power control group. The SELECT I/Q softkey is used to select the branch to be analyzed.

POWER VS SY MBOL

CF 833.49 MHzdBm

Ref

-4

10.0

-11

dBm

-18

Att

Att 40 dB

40 dB

-25

-32

-39

-46

CLRWR

-53

0 12 Sym/ 95

Fig. 31 Power versus Symbol for one PCG of a channel

SR 76.8 ksps Chan 8.16 MAP I PCG 3

Marker 1 [T1 ]

-13.99 dBm

Symbol 13

Remote: CALC2:FEED XTIM:CDP:PVSY

Software Manual 1007.9800.42 - 06 69

Page 72

S-K83 Configuration of cdma2000 Measurements

SELECT I/Q

The branch to be analyzed (I or Q) is selected using the SELECT I/Q softkey. The I branch is selected after a Preset.

Remote: SENS:CDP:MAPP I | Q

SELECT

The SELECT softkey opens a submenu to define the capture configuration and the selection of PCG and channel for the evaluation.

CAPTURE LENGTH SET COUNT

SET TO ANALYZE SELECT CHANNEL SELECT HALF SLOT

CAPTURE LENGTH

The CAPTURE LENGTH softkey supports input of the number of power control groups (PCG) that are to be analyzed. The input value is always in multiples of the PCGs. The range is from 2 to 50 (since firmware version 2.60/3.50 the maximum is increased to

64) for Analyzer R&S FSU, R&S FSQand from 2 to 12 for Analyzer R&S FSP. With all evaluations exhibiting one value per PCG on the x-axis, the maximum value on the xaxis is the set CAPTURE LENGTH -1.

Remote: SENS:CDP:IQL 2..64 (2..12)

SET COUNT / SET TO ANALYZE

This function offers the possibility for the R&S FSQ to capture up to 2432 PCGs (more than 3 seconds) with a SINGLE SWEEP and then post process all the data with SET TO ANALYZE.

If the SET COUNT is set to 1 (default value), the device behaves as before and with the CAPTURE LENGTH the number of PCG can be set.

R&S FSQ the SET COUNT can be adjusted in the range of 1…38. Is the SET

For COUNT greater than 1 the CAPTURE LENGTH will be implicitly set to 64 PCGs and become unavailable. The SET COUNT defines then how many SETS of 64 PCGs shall be captured consecutively into the IQ RAM of the R&S FSQ.

With the SET TO ANALYZE softkey the set for which the results are calculated can be defined. The range is from 0... (SET COUNT-1).

Remote: SENS:CDP:SET:COUN 1..38 (FSQ) SENS:CDP:SET:VAL <numeric_value> (FSQ)

SELECT CHANNEL

A channel is selected using the SELECT CHANNEL softkey. All analyses that take the results for a channel into account specify the results for the newly selected channel: POWER VS PCG, POWER VS SYMBOL, RESULT SUMMARY, BITSTREAM, SYMBOL CONSTELLATION and SYMBOL EVM.

Software Manual 1007.9800.42 - 06 70

Page 73

S-K83 Configuration of cdma2000 Measurements

In the analyses CODE DOMAIN POWER, CODE DOMAIN ERROR POWER and CHANNEL TABLE (all on Screen A), the selected channel is identified in red to distinguish it.

Channels are entered in decimal format. The entered value is always converted to the base spreading factor. It is displayed in the input field in <channel>.<base spreading factor> format.

Example:

? Base spreading factor is 64. (BASE SF softkey). ? The number 14 is entered using the SELECT CHANNEL softkey. ? 14.32 is displayed.

Normally the code is displayed referred to the base spreading factor in the function field above the diagrams.

If, however, the current channel table contains a bunched channel to which the selected channel referred to the base spreading factor belongs, this bunched channel together with the associated code number and spreading factor is displayed in the function field and highlighted in red in the respective analyses.

Example:

? Entries as for the example above. ? Now the channel table of channel 2.4 is active.

Code 14.32 belongs to this channel, so 2.4 is displayed in the function field and channel 2.4 is highlighted in red on Screen A. In the Hadamard order, all codes associated with channel 2.4 are therefore highlighted: 2.32, 6.32, 10.32, 14.32, ...,

62.32

If the channel configuration changes at the next measurement, the changed channel to which the channel <channel>.<base spreading factor> belongs, is displayed accordingly in the function field and highlighted in red on Screen A..

Example:

? As for the example above, except that the channel configuration has been changed

and channel 6.8 is now active.

? Channel 6.8 is displayed in the function field and highlighted in red on Screen A. In

the Hadamard order the codes 6.32, 14.32, 22.32, ..., 54.32 are therefore highlighted.

The rotating wheel behaviour depends on the analysis on Screen A and is geared to the graphic display. With CODE DOMAIN POWER or CODE DOMAIN ERROR POWER, it depends on whether the Hadamard or BitReverse order is active. (Refer to the ORDER softkey). It is always the adjacent channel that is selected with the rotating wheel. With the channel table, the rotating wheel is used to scroll through the list.

Remote: SENS:CDP:CODE 0...(BASE SF-1)

Software Manual 1007.9800.42 - 06 71

Page 74

S-K83 Configuration of cdma2000 Measurements

SELECT PCG

ODE DOMAIN ERROR POWER, CHANNEL TABLE, POWER vs. SYMBOL,

C COMPOSITE CONSTELLATION, RESULT SUMMARY, BITSTREAM, SYMBOL CONSTELLATION and SYMBOL EVM).

In the analyses POWER vs. PCG, COMPOSITE EVM and PEAK CODE DOMAIN ERROR, the selected PCG is highlighted in red.

Remote: SENS:CDP:SLOT 0 ...(IQ_CAPTURE_LENGTH-1)

ADJUST REF LVL

Remote: SENS:POW:ACH:PRES:RLEV

6.6.2 Measurement configuration - CHAN CONF hotkey

CODE CHAN AUTOSEARCH CODE CHAN PREDEFINED EDIT CHAN CONF TABLE

HEADER/VALUES ADD SPECIAL DELETE LINE SAVE TABLE

SORT TABLE DEL CHAN CONF TABLE COPY CHAN CONF TABLE RESTORE STD TABLES NEW CHAN CONF TABLE HEADER/VALUES

ADD SPECIAL

DELETE LINE

SAVE TABLE

SORT TABLE

The CHAN CONF hotkey opens a submenu with the configuration options for the channel search. In this submenu, predefined channel tables can be selected and are then taken as a basis for measurements of the code domain analyzer.

When the hotkey is clicked, a table containing the channel tables stored on the hard disk of the measuring instrument is opened. The table is used merely to obtain an overview; one of the tables can be selected for the measurement only after the CODE CHAN PREDEFINED softkey has been operated. The RECENT entry is the channel table of the last Code Domain Power analysis to be performed.

Software Manual 1007.9800.42 - 06 72

Page 75

S-K83 Configuration of cdma2000 Measurements

Remote: CONF:CDP:CTAB:CAT?

CODE CHAN AUTOSEARCH

The CODE CHAN AUTOSEARCH softkey supports measurements of the code domain power analyzer in Autosearch mode. In this mode, the entire code domain (all permissible symbol rates and channel numbers) is searched for active channels. A channel is active when the minimum power, referred to the total power, entered by the user is exceeded (refer to the INACT CHAN THRESHOLD softkey) and a sufficient signal-to-noise ratio exists.

CODE CHAN AUTOSEARCH mode is the default search mode with which the CDP analysis starts. It is primarily used to provide the user with an overview of the channels contained in the signal. If the signal contains channels which are not detected as being active in Autosearch mode, the CDP analysis can be performed with predefined channel configurations by changing to CODE CHAN PREDEFINED mode.

Remote: CONF:CDP:CTAB:STAT OFF

CODE CHAN PREDEFINED

The CODE CHAN PREDEFINED softkey switches the CDP analysis to the measuring mode with the help of predefined channel tables. In this mode, there is no search for active channels in the code domain, but the channels of a channel table defined before the measurement are assumed to be active.

When the softkey is clicked, a table containing all the channel tables stored on the measuring instrument is opened. The CDP analysis is switched to "Predefined Channel Table" mode. In this instance, the last table of the automatic search mode is taken as a basis for the measurement. This table is available at the RECENT entry .

Switching to one of the predefined channel tables is done by selecting the corresponding table entry and operating one of the units keys or by pressing Enter; the selected channel table is taken as a basis for the analysis as from the next measurement. A checkmark marks the selected channel table.

When the R&S FS-K83 leaves the factory, the channel tables from Chapter 4 are stored on the measuring instrument.

Remote: CONF:CDP:CTAB:STAT ON

EDIT CHAN CONF TABLE

The EDIT CHAN CONF TABLE softkey opens the selected channel table in which the channel configuration can be modified. In addition, a submenu is opened with the softkeys required for editing the channel table.

Software Manual 1007.9800.42 - 06 73

Page 76

S-K83 Configuration of cdma2000 Measurements

NAME:

COMMENT:

TYPE CHAN.SF SYMBOL RATE

PICH

S1CH 2.4 307.2 ACTIVE

FCH 4.16 76.8 ACTIVE

S2CH 6.8 153.6 ACTIVE

DCCH 8.16 76.8 ACTIVE

CQICH

ACKCH 16.64 ACTIVE

CHAN 0.32 INAC TIVE

CHAN 1.32 INAC TIVE

CHAN 1.32 38.4 INACTIVE

CHAN 2.32 INAC TIVE

CHAN 3.32 INAC TIVE

CHAN 4.32 38.4 INACTIVE

CHAN 5.32 INAC TIVE

CHAN 7.32 INAC TIVE

CHAN 7.32 38.4 INACTIVE

CHAN 8.32 INAC TIVE

CHAN 9.32 INAC TIVE

CHAN 10.32 38.4 INACTIVE

CHAN 11.32 INAC TIVE

CHAN 11.32 38.4 INACTIVE

CHAN 12.32 INAC TIVE

REVTCO

Standard Reverse Traffic Channel Operation

0.32 38.4 ACTIVE

12.16 76.8 ACTIVE

EDIT CHANNEL TABLE

[ksps]

19.2

38.4

MAPPING STATUS

I38.4

CDP REL

[dB]

0.0

Fig. 32 Tabelle zum Editieren einer Kanalkonfiguration

As a general rule, each of the channel tables stored on the measuring instrument can be modified at will. The edited table is not stored automatically on the hard disk of the measuring instrument but only by selecting the SAVE TABLE softkey. This prevents a table from being accidentally overwritten (e.g. one of the channel models).

If a table that is currently the basis for the Code Domain Power analysis is edited, the edited table is used for the next measurement immediately after being saved. The effects of the changes in the table are therefore immediately visible. Here again, the edited table is not saved on the hard disk of the measuring instrument until the SAVE TABLE softkey is clicked.

If a table is edited that is stored on the hard disk of the measuring instrument but is not currently enabled, the changes will not be visible until it has been saved (SAVE TABLE softkey) and then enabled.

If the CHAN NO parameter, spreading factor or mapping of a channel is modified, a code domain conflict check is performed after confirming the input (units keys). If a code domain conflict is detected, the associated channels are identified by an asterisk. You are given the opportunity of eliminating the code domain conflicts. If a table with code domain conflicts is used for a CDP analysis, the results are invalid.

HEADER/VALUES

The HEADER/VALUES softkey sets the focus of the edit option either to the entries in the table or to the table header.

Editing the table header (HEADER):

Overwriting of saved tables can be avoided by changing the name of a table. A table name must not consist of more than 8 characters.

Software Manual 1007.9800.42 - 06 74

Page 77

S-K83 Configuration of cdma2000 Measurements

Remote: CONF:CDP:CTAB:NAME NEW_TAB

diting table entries (VALUES):

The actual data of the channel table are edited here. The following entries are available for each of the channels contained in the table (confirm an input using the units keys):

TYPE: Channel type; the special channels are identified by name (PICH,

EACH, CCCH, DCCH, ACKCH, CQICH, CQICH, FCH, S1CH, S2CH). All inactive channels have the entry CHAN.

CHAN.SF: The channel number and the spreading factor are entered for the

channel in this column. If values are entered without a decimal point, the base spreading factor is used for the spreading factor of the channel (refer to the BASE SF softkey). Invalid entries are rejected.

SYMBOL RATE: Symbol rate with which the channel is transmitted. It depends

directly on the spreading factor of the channel (refer to Table 19) and cannot therefore be edited.

MAPPING: Specifies whether the channel is active on the I or Q branch.

CDP REL: Indicates the relative channel power (referred to the pilot or total

power, depending on the POWER REF TOT/PICH softkey). The entry cannot be edited and only exists for the RECENT table; it is used to detect channels with low power.

STATUS: Status of the channel (active/inactive). When a change of channel

status occurs, a channel that has been entered in the table can be hidden in the Code Domain Power analysis without having to remove the corresponding entry from the table. Only channels having an "active" channel status are used for the CDP analysis.

Remote: CONF:CDP:CTAB:DATA 0,5,0,0,0,0,1,0, ''Selects PICH 0.32 on I and 2,3,2,1,0,0,1,0 CCCH 2.8 on Q CONF:CDP:CTAB:COMM 'Comment for new table

INSERT LINE

The PICH pilot channel is always contained in the channel table. The INSERT LINE softkey allows additional channels to be added to the channel table.

ADD SPECIAL CHANNEL

EACH Enhanced Access Channel

CCCH Reverse Common Control Channel

DCCH Reverse Dedicated Control Channel

ACKCH Reverse Acknowledgment Channel

CQICH Reverse Channel Quality Indicator Channel

FCH Fundamental Channel

S1CH Reverse Supplemental 1 Channel

S2CH Reverse Supplemental 2 Channel

Software Manual 1007.9800.42 - 06 75

Page 78

Editing of the channel models and saving under the original name results in the models

S-K83 Configuration of cdma2000 Measurements

Fig. 33 Table of special channels

Remote: -- Integrated in command CONF:CDP:CTAB:DATA integriert)

DELETE LINE

The DELETE LINE softkey deletes the highlighted line from the table.

Remote: --

MEAS CHAN CONF TABLE

The MEAS CHAN CONF TABLE softkey initiates a measurement in CODE CHAN AUTOSEARCH mode. The measurement results are applied to the open channel table. The softkey is only available in CODE CHAN AUTOSEARCH mode.

Remote: --

SAVE TABLE

The SAVE TABLE softkey saves the table under the specified name.

being overwritten.

IRemote: -- (Automatic with remote control)

SORT TABLE

The SORT TABLE softkey sorts the table in ascending spreading factor order and in ascending channel number order within the spreading factors.

Remote: --

DEL CHAN CONF TABLE

The DEL CHAN CONF TABLE softkey deletes the highlighted table. The currently active table in CODE CHAN PREDEFINED mode cannot be deleted.

Remote: CONF:CDP:CTAB:DEL

COPY CHAN CONF TABLE

The COPY CHAN CONF TABLE softkey copies the selected table. The system asks for the name under which you want to save the copy.

Remote: CONF:CDP:CTAB:COPY "CTAB2"

Software Manual 1007.9800.42 - 06 76

Page 79

S-K83 Configuration of cdma2000 Measurements

RESTORE STD TABLES

The RESTORE STD TABLES softkey restores the predefined channel tables including all of their values (refer to Chapter 4) to the state in which they were in when the device left the factory. In this way unintentional overwriting can be undone.

Remote: CONF:CDP:CTAB:REST

NEW CHAN CONF TABLE

The NEW CHAN CONF TABLE softkey opens a submenu that is identical to that described for the EDIT CHAN CONF TABLE softkey. Unlike EDIT CHAN CONF

TABLE, however, only the pilot channel PICH is entered in the table with NEW CHAN CONF TABLE; the name of the table is also as yet undecided:

DIT CHANNEL TABLE

NAME:

COMMENT:

TYPE CH AN.SF SYMBOL RATE

ICH

default

0.32 38.4 ACTIVE

[ksps]

MAPPING STATUS

CDP REL

[dB]

Fig. 34 Creating a new channel configuration

6.6.3 Configuring the application firmware – SETTINGS

The SETTINGS hotkey opens a submenu for setting the measurement parameters of the application firmware.

BAND CLASS CAPTURE SETTINGS

CAPTURE LENGTH SET COUNT SET TO ANALYZE SELECT CHANNEL

SELECT HALF SLOT CDP AVG ORDER HADAM/BITRE CODE DOM OVERVIEW

Software Manual 1007.9800.42 - 06 77

Page 80

S-K83 Configuration of cdma2000 Measurements

SELECT I/Q CODE PWR ABS/REL POWER REF TOT/PICH LONG CODE I/Q INACT CHAN THRESHOLD OPERATION ACCESS/TRAFFIC INVERT Q SIDEBAND NORM / INV NORMALIZE ON / OFF

The BAND CLASS softkey is a setting parameter for the RF measurements "adjacent channel power" and "spectrum emission mask".

All other softkeys configure the measurements in the code domain analyzer.

BAND CLASS

The BAND CLASS softkey allows input of the used frequency band for the RF measurements "adjacent channel measurement" and "spectrum emission mask". The selection is made from a table in which the name of the band class is displayed.

Entry of the center frequency is not restricted by the band class selection.

BAND CLASS SELECTION

Band Class 0 (800 MHz Band) Band Class 1 (1900 MHz Band) Band Class 2 (TACS Band) Band Class 3 (JTACS Band)

Band Class 4 (Korean PCS Band)

Band Class 5 (450 MHz Band) Band Class 6 (2 GHz Band) Band Class 7 (700 MHz Band) Band Class 8 (1800 MHz Band) Band Class 9 (900 MHz Band) Band Class 10 (Secondary 800 MHz Band) Band Class 11 (400 MHz European PAMR Band) Band Class 12 (800 MHz PAMR Band) Band Class 14 (US PCS 1.9GHz Band) Band Class 15 (AWS Band)

Fig. 35 Band class selection

You can scroll in the table, and the entry currently being used is checked, while a bar displays the selected entry; press ENTER to apply the value.

The numerical value is specified by means of the IEC/IEEE bus.

Remote: CONF:CDP:BCL <band_class>

BASE SF

The BASE SF so ftke y opens a subm enu i n wh ich a b ase spr ead ing fac tor of 16, 32 o r 64 can be selec ted. If chan nels of spr eadi ng fac tor 64 ar e an alyze d, bas e spr eading fact or 64 s houl d be used since a lias power is dis playe d in the CODE DOMAIN POW ER an d C ODE DO MAIN ERROR POWER diagram if base spreading factor 16 or 32 is used.. (Refer to the color coding used for these analyses..)

Remote: SENS:CDP:SFAC 16 | 32 | 64

Software Manual 1007.9800.42 - 06 78

Page 81

S-K83 Configuration of cdma2000 Measurements

CAPTURE SETTINGS

The CAPTURE SETTINGS softkey opens a submenu to define the capture configuration and the selection of PCG and channel for the evaluation.

CAPTURE LENGTH SET COUNT SET TO ANALYZE SELECT CHANNEL SELECT HALF SLOT

CAPTURE LENGTH

64) for Analyzer R&S FSU, R&S FSQand from 2 to 12 for Analyzer R&S FSP. With all evaluations exhibiting one value per PCG on the x-axis, the maximum value on the xaxis is the set CAPTURE LENGTH -1.

Remote: SENS:CDP:IQL 2..64 (2..12)

SET COUNT / SET TO ANALYZE

This function offers the possibility for the R&S FSQ to capture up to 2432 PCGs (more than 3 seconds) with a SINGLE SWEEP and then post process all the data with SET TO ANALYZE.

If the SET COUNT is set to 1 (default value), the device behaves as before and with the CAPTURE LENGTH the number of PCG can be set.

R&S FSQ the SET COUNT can be adjusted in the range of 1…38. Is the SET

With the SET TO ANALYZE softkey the set for which the results are calculated can be defined. The range is from 0... (SET COUNT-1).

Remote: SENS:CDP:SET:COUN 1..38 (FSQ) SENS:CDP:SET:VAL <numeric_value>

SELECT CHANNEL

In the analyses CODE DOMAIN POWER, CODE DOMAIN ERROR POWER and CHANNEL TABLE (all on Screen A), the selected channel is identified in red to distinguish it.

Channels are entered in decimal format. The entered value is always converted to the base spreading factor. It is displayed in the input field in <channel>.<base spreading factor> format.

Example:

Software Manual 1007.9800.42 - 06 79

Page 82

S-K83 Configuration of cdma2000 Measurements

? Base spreading factor is 64. (BASE SF softkey). ? The number 14 is entered using the SELECT CHANNEL softkey. ? 14.32 is displayed.

Normally the code is displayed referred to the base spreading factor in the function field above the diagrams.

f, however, the current channel table contains a bunched channel to which the

I selected channel referred to the base spreading factor belongs, this bunched channel together with the associated code number and spreading factor is displayed in the function field and highlighted in red in the respective analyses.

Example:

? Entries as for the example above. ? Now the channel table of channel 2.4 is active.

62.32

Example:

? As for the example above, except that the channel configuration has been changed

and channel 6.8 is now active. Channel 6.8 is displayed in the function field and highlighted in red on Screen A. In the Hadamard order the codes 6.32, 14.32, 22.32, ..., 54.32 are therefore highlighted.

Remote: SENS:CDP:CODE 0...(BASE SF-1)

SELECT PCG

The SELECT PCG softkey is used to select a power control group. PCGs are entered in decimal format. In this instance the range of values is from 0 to (IQ-Capture-Length); refer to the CAPTURE LENGTH softkey. All analyses that take the results for a PCG into account specify the results for the newly selected PCG: (CODE DOMAIN POWER, CODE DOMAIN ERROR POWER, CHANNEL TABLE, POWER vs. SYMBOL, COMPOSITE CONSTELLATION, RESULT SUMMARY, BITSTREAM, SYMBOL CONSTELLATION and SYMBOL EVM).

In the analyses POWER vs. PCG, COMPOSITE EVM and PEAK CODE DOMAIN ERROR, the selected PCG is highlighted in red.

Software Manual 1007.9800.42 - 06 80

Page 83

S-K83 Configuration of cdma2000 Measurements

Remote: SENS:CDP:SLOT 0 ...(IQ_CAPTURE_LENGTH-1)

ORDER HADAM/BITRE

The ORDER HADAM/BITRE softkey allows the channel sorting order to be determined for the CODE DOMAIN POWER and CODE DOMAIN ERROR POWER analyses. With the Hadamard order (softkey to HADAM), the codes are sorted in ascending order. With the BitReverse order (softkey to BITRE), channels with bunched codes are adjacent to each other since the code numbers are sorted with the bits reversed. (Refer to the CODE DOMAIN POWER and CODE DOMAIN ERROR POWER analyses.)

Remote: SENS:CDP:ORD HAD | BITR

CODE DOM OVERVIEW

The CODE DOM OVERVIEW softkey is available and can be enabled for the code domain power and code domain error-power measurements. If Overview mode is activated, Screen A always displays the I branch and Screen B the Q branch of the CDP and CDEP analysis.

Remote: SENS:CDP:ORD HAD | BITR

SELECT I/Q

The I or Q branch to be analyzed is selected with the SELECT I/Q softkey. The I branch is selected after a Preset.

Remote: SENS:CDP:MAPP I | Q

CODE PWR ABS/REL

The CODE PWR ABS/REL softkey selects for the CODE DOMAIN POWER analysis whether the y-values should be displayed as absolute (dBm) or relative (dB). In relative mode, the reference is either the total power or the pilot power.

Remote: CALC1:FEED "XPOW:CDP:RAT" (relative) CALC1:FEED "XPOW:CDP" (absolute)

POWER REF TOT/PICH

The POWER REF TOT/PICH softkey determines the reference power for the relative power analyses:

TOT For each PCG, all relative power values (CDP RELATIVE analyses) are

referred to the total power of the signal in the respective PCG.

PICH

The reference power is that of the pilot channel in the corresponding PCG.

The default setting of the softkey is TOT.

Remote: SENS:CDP:PREF TOT | PICH

Software Manual 1007.9800.42 - 06 81

Page 84

S-K83 Configuration of cdma2000 Measurements

TIME/PHASE ON/OFF

The TIME/PHASE ON/OFF softkey supports specific enabling and disabling of the Timing and Phase Offset analysis of the channels for the pilot. If the value of the softkey is OFF (default setting) or there are more than 50 active channels in the signal, dashes ('---') are entered in the channel occupancy table and in the Result Summary analysis for timing and phase offset. If the softkey is ON, the analysis will take place and the values will be displayed.

Remote: SENS:CDP:TPM ON | OFF

LONG CODE I/Q

The LONG CODE MASK softkey is used to define the long code mask of the mobile in hexadecimal form. The advantage of a default value of 0 is that no long code offset (refer to the LONG CODE OFFSET softkey) has to be defined since this offset is not taken into consideration for a long code mask of 0. The value range is from 0 to 4FFFFFFFFFF.

Remote: SENS:CDP:LCOD:MASK '#H0'...'#H4FFFFFFFFFF'

LONG CODE OFFSET

The LONG CODE OFFSET softkey allows the long code offset, including the PN offset, to be set in chips in hexadecimal format with a 52-bit resolution. This value corresponds to the GPS timing since 6.1.1980 00:00:00 UTC. This long code offset is used for offsetting at the next trigger pulse (which cannot occur until a setup time of 300 ms has elapsed). The command is only available if a long code mask unequal to 0 is set.

The chips offset is calculated as follows: t t

SinceStartGPS

should be in seconds.

SinceStartGPS

* 1.2288 MChips/s, where

Example:

The hexadecimal offset of 258000 h chips is set for the first even second clock trigger.

The default value is 0.

Remote: SENS:CDP:LCOD:OFFS '#H0'...'#H1FFFFFFFFFF8000'

ESG OPT 101

The ESG OPT 101 toggle softkey selects the mode of the long code generation. If the softkey is unselected (default) the cdma2000 standard long code generator is used. If the softkey is selected (green) the Agilent ESG option 101 long code is used. Only signals from that generator are possible to analyse then.

Remote: SENS:CDP:LCOD:MODE STAN|ESG101

INACT CHAN THRESHOLD

The INACT CHAN THRESHOLD softkey allows entry of the minimum power that an individual channel must have in comparison with the total signal in order to be regarded as an active channel.

Channels below the specified threshold are regarded as "inactive".

Software Manual 1007.9800.42 - 06 82

Page 85

S-K83 Configuration of cdma2000 Measurements

The two measurements COMPOSITE EVM and PEAK CODE DOMAIN ERR, which are specified as measurements on the total signal, are performed using the list of active channels. Distortions of these two measurements always occur when active channels are not detected as being active and unassigned codes are wrongly given the status of "occupied channel". INACT CHAN THRESHOLD can therefore be used to influence the results of the two measurements.

The default value is –40 dB, which should result in all channels being detected by the CDP analysis. If not all channels contained in the signal are detected automatically, INACT CHAN THRESHOLD must be decremented.

Remote: SENS:CDP:ICTR -100 dB ... 0 dB

PILOT PWR ABS/REL

The PILOT PWR ABS/REL softkey sets the pilot channel power is displayed in absolute or relative terms in the result summary. In relative mode, the reference power is the total power.

Remote: SENS:CDP:PPR ABS | REL

INVERT Q

Der Softkey INVERT Q invertiert das Vorzeichen des Q-Anteils des Signals. Grundeinstellung ist OFF.

Remote: SENS:CDP:QINV OFF

SIDEBAND NORM / INV

The SIDEBAND NORM / INV softkey chooses between measurement of the signal in normal (NORM) and inverted spectral position (INV).

NORM The normal position allows measurement of mobile station RF signals.

INV The inverted position is practical for measurements on IF modules or

components in the case of spectral inversion.

The default setting is NORM.

Remote: SENS:CDP:SBAN NORM|INV

NORMALIZE ON / OFF

The NORMALIZE ON / OFF softkey removes the DC offset from the signal. The default setting of the parameter is OFF.

Remote: SENS:CDP:NORM OFF

6.6.4 Frequency settings – FREQ key

The FREQ key opens a submenu for changing the measurement frequency.

CENTER CF-STEPSIZE FREQUENCY OFFSET

Software Manual 1007.9800.42 - 06 83

Page 86

S-K83 Configuration of cdma2000 Measurements

CENTER

The CENTER softkey opens the input window for manually entering the center frequency.

The permissible input range of the center frequency is

Minspan/2  f

center frequency

center

Minspan f

max

enter

smallest selectable span >0 Hz (10 Hz) maximum frequency

 f

- Minspan/2

Remote: :FREQ:CENT 100MHz

CF-STEPSIZE

CF-STEPSIZE opens a submenu for setting the step size of the center frequency change. It is possible to enter the step size manually (MANUAL softkey) or using the current measurement frequency (CENTER softkey). The softkeys are described in the manual for the basic device..

Remote: FREQ:CENT:STEP <numeric_value>

FREQUENCY OFFSET

The FREQUENCY OFFSET softkey enables entry of an arithmetic frequency offset which is added to the frequency axis labeling. The range for the offset is -100 GHz to 100 GHz. The default setting is 0 Hz.

Remote: FREQ:OFFS 10 MHz

6.6.5 Span-Einstellungen - Taste SPAN

Die Taste SPAN ist für Measurementen im Code-Domain-Analyzer gesperrt. Für alle anderen Measurementen (siehe Taste MEAS) sind die zulässigen Span-Einstellungen bei der jeweiligen Measurement erläutert. Das zugehörige Menü entspricht dem der Measurement im Grundgerät und ist im Grundgerätehandbuch beschrieben.

Software Manual 1007.9800.42 - 06 84

Page 87

S-K83 Configuration of cdma2000 Measurements

6.6.6 Pegel-Einstellung - Taste AMPT

The AMPT key opens a submenu for setting the reference level.

REF LEVEL ADJUST REF LEVEL REF LEVEL OFFSET Y PER DIV REF VALUE POSITION RF ATTEN MANUAL RF ATTEN AUTO

REF LEVEL

The REF LEVEL softkey enables entry of the reference level. The entry is performed in dBm.

Remote: DISP:WIND:TRAC:Y:RLEV -60dBm

ADJUST REF LEVEL

ADJUST REF LEVEL executes a routine for optimum adaptation of the reference level to the signal.

Remote: [SENSe<1|2>:]CDPower:LEVel:ADJust

REF LEVEL OFFSET

The REF LEVEL OFFSET softkey enables entry of an arithmetic level offset. This is added to the measured level irrespective of the selected unit. The Y-axis scaling is changed accordingly The setting range is ±200 dB in steps of 0.1 dB.

Remote: DISP:WIND:TRAC:Y:RLEV:OFFS -10dB

Y PER DIV

Y PER DIV sets the grid spacing on the y-axis for all diagrams in which this is possible.

Remote: DISP:WINDow1:TRAC1:Y:SCAL:RPOS

REF VALUE POSITION

REF VALUE POSITION supports entry of the position of the y-axis reference value on the axis (0 to 100%).

Remote: DISP:WIND1:TRAC1:Y:SCAL:PDIV

RF ATTEN MANUAL

The RF ATTEN MANUAL softkey enable entry of the attenuation, irrespective of the reference level. The attenuation can be modified in steps of 10 dB between 0 and 70 dB. Other entries will be rounded down to the next lower integer value.

If the required reference level can no longer be set for the given RF attenuation, it will be adjusted and the message "Limit reached" will be issued.K

Software Manual 1007.9800.42 - 06 85

Page 88

S-K83 Configuration of cdma2000 Measurements

Remote: INP:ATT 40 DB

RF ATTEN AUTO

The RF ATTEN AUTO softkey sets the RF attenuation automatically irrespective of the set reference level.

his ensures that the optimum RF attenuation desired by the user is always used.

RF ATTEN AUTO is the default setting.

Remote: INP:ATT:AUTO ON

6.6.7 Marker settings - MKR key

The MARKER key opens a submenu for the marker settings.

Markers are not available for the RESULT SUMMARY and CHANNEL TABLE analyses. Up to four markers can be enabled in all other analyses and defined as markers or delta markers using the MARKER NORM/DELTA softkey.

The MARKER 1/2/3/4 softkeys simultaneously select and enable the marker concerned.

Marker 1 is always the normal marker after it has been enabled, while markers 2 to 4 are delta markers referring to marker 1 after they have been enabled. The MARKER NORM DELTA softkey is used to transform these markers into markers with absolute measured value display. If marker 1 is the active marker, MARKER NORM DELTA is enabled as an additional delta marker.

Pressing the MARKER 1 to MARKER 4 softkeys disables the selected marker.

Remote: CALC:MARK ON; CALC:MARK:X <value>; CALC:MARK:Y? CALC:DELT ON; CALC:DELT:MODE ABS|REL CALC:DELT:X <value>; CALC:DELT:X:REL? CALC:DELT:Y?

ALL MARKER OFF

The ALL MARKER OFF softkey disables all markers (reference and delta markers). It also disables the functions and displays associated with the markers and delta markers.

Remote: CALC:MARK:AOFF

The parameters relating to an enabled marker are read out above the diagrams:

Marker 1 [T1]

-5.00 dB PCG 3 SR 19.2 ksps 1.64

Fig. 36 Diagram marker field

Software Manual 1007.9800.42 - 06 86

Page 89

S-K83 Configuration of cdma2000 Measurements

The channel parameters are also specified in addition to the channel power, which is displayed as relative referred to the value specified under POWER REF TOT/PICH. The meanings are as follows (for the channel assigned to the marker):

PCG 03: PCG number of the channel SR 19.2 ksps:

Symbol rate of the channel (9.6 ksps for unassigned codes)

1.32: Walsh code number and spreading factor of the channel

For all other measurements not belonging to the code domain analyzer the marker functions of the basic device apply.

6.6.8 Changing instrument settings- Taste MKR

The MKRkey opens a submenu for marker functions:

SELECT MARKER PEAK NEXT PEAK PEAK MODE MIN/MAX MARKER  PICH

SELECT MARKER

The SELECT MARKER softkey selects the desired marker in a data input field. If the marker is disabled, it is enabled and can then be moved. You enter a number. Delta marker 1 is selected by entering '0'.

Remote: CALC:MARK1 ON; CALC:MARK1:X <value>; CALC:MARK1:Y?

PEAK

The PEAK softkey sets the active marker or delta marker to the maximum/minimum of the associated trace.

If no marker had been active before the MKR-> menu was opened, marker 1 is automatically enabled and the Peak function is executed.



Remote: CALC:MARK:MAX CALC:DELT:MAX CALC:MARK:MIN CALC:DELT:MAX

NEXT PEAK

The NEXT PEAK softkey sets the active marker or delta marker to the next lower maximum/minimum value of the associated trace. The search direction is specified by the setting in the NEXT MODE LEFT/RIGHT submenu.

Remote: CALC:MARK:MAX:NEXT CALC:DELT:MAX:NEXT CALC:MARK:MIN:NEXT CALC:DELT:MIN:NEXT

Software Manual 1007.9800.42 - 06 87

Page 90

S-K83 Configuration of cdma2000 Measurements

PEAK MODE MIN/MAX

The PEAK MODE MIN/MAX softkey sets whether the peak search should determine the maximum or minimum value of the trace. The parameter affects the behaviour of the PEAK and NEXT PEAK softkeys.

Remote: --

MARKER  PICH

The MARKER PICH softkey sets the marker to the pilot channel (channel number

0.32).

6.6.9 Marker functions – MKR FCTN key

The MKR FCTN key is disabled for all measurements of the code domain analyzer. For all other measurements of the R&S FS-K83, the softkeys of the menu are described in the manual for the basic device.

6.6.10 Bandwidth setting – BW key

The BW key is disabled for all measurements of the code domain analyzer. For all other measurements of the R&S FS-K83, the softkeys associated with the menu are described in the manual for the basic device.

6.6.11 Measurement control – SWEEP key

The menu of the SWEEP key contains options for switching between single measurement and continuous measurement, and also control of single measurements. For measurements in the spectral range, the measurement time for a sweep and the number of sweep points can also be set. All the softkeys associated with the menu are described in the manual for the basic device.

6.6.12 Measurement selection – MEAS key

The menu of the MEAS key contains all the measurements that can be selected on the R&S FS-K83 by pressing a key. The menu and its submenus are described in Chapter MEAS key or MEAS hotkeys.

Software Manual 1007.9800.42 - 06 88

Page 91

S-K83 Configuration of cdma2000 Measurements

6.6.13 Trigger settings – TRIG key

The selectable trigger options depend on the measurement selected. For the code domain power analyzer, a free-run mode and a mode with the external even second clock trigger called for by the cdma2000 Standard are possible. The trigger options for all other measurements are identical to those of the corresponding measurement in the

asic device. The associated softkeys are described in the manual for the basic

b device.

EXTERN

With the softkey EXTERN the external trigger source can be selected. From firmware V2.60/3.60 on also the external trigger level can be adjusted in the range from 0.5V to

3.5V. The default value is 1.4V.

Remote: TRIG:SEQ:LEV:EXT <numeric_value>

6.6.14 Trace settings – TRACE key

The TRACE key opens the following submenu:

CLEAR/WRITE MIN HOLD AVERAGE VIEW

CLEAR/WRITE

The CLEAR/WRITE softkey enables the Overwrite mode for the acquired measured values, i.e. the trace is rewritten for each sweep.

After the CLEAR/WRITE softkey has been operated, the device deletes the selected trace memory and restarts the measurement.

Remote: DISP:WIND:TRAC:MODE WRIT

MAX HOLD

The MAX HOLD softkey activates the peak value detector. With each sweep, the analyzer only adopts the new measured value in the saved trace data if it is larger than the previous one.

Pressing the MAX HOLD softkey a second time deletes the trace memory and starts peak value detection from the beginning again.

Remote: DISP:WIND:TRAC:MODE MAXH

MIN HOLD

The MIN HOLD softkey activates the minimum value detector. With each sweep, the analyzer only adopts the new measured value in the saved trace data if it is smaller than the previous one. Pressing the MIN HOLD softkey a second time deletes the trace memory and starts minimum value detection from the beginning again.

Software Manual 1007.9800.42 - 06 89

Page 92

S-K83 Configuration of cdma2000 Measurements

Remote: DISP:WIND:TRAC:MODE MINH

AVERAGE

The AVERAGE softkey enables the trace averaging function. The average is formed from several sweeps. Averaging is performed irrespective of the AVG MODE LOG / LIN setting on the logarithmic level values or on the measured power/voltage values.

Averaging is restarted every time the AVERAGE softkey is pressed. The trace memory is always cleared.

Remote: DISP:WIND:TRAC:MODE AVER

VIEW

The VIEW softkey freezes the trace.

Remote: DISP:WIND:TRAC:MODE VIEW

For the measurements in the code domain analyzer, an AVERAGE/ MAX HOLD or MIN HOLD is possible. With the Channel Occupancy Table analysis, the channel configuration measured on the first sweep is retained for the trace statistics. If the signal is reconfigured, the SINGLE SWEEP softkey (and, if necessary, the CONTINUOUS SWEEP softkey) must be pressed again.

The BITSTREAM analyse and the CONSTELLATION diagrams support only CLEAR WRITE mode as a general rule.

SWEEP COUNT

The SWEEP COUNT softkey sets the number of sweeps over which the average value is formed. The permissible range is 0 to 30000, though the following should be noted:

Sweep Count = 0 means running averaging with averaging length of 10 Sweep Count = 1 means no averaging Sweep Count > 1 means averaging over the specified number of sweeps; in

continuous sweep mode averaging changes over to running averaging once this number has been reached.

The default setting is running averaging (Sweep Count = 0). The number of sweeps used for averaging is always equal to the averaging length of 10 for all active traces in the selected diagram.

Remote: SWE:COUN 64

6.6.15 Display lines – LINES key

The LINES key is disabled for all measurements of the code domain analyzer. The menu setting options for all other measurements are equivalent to those of the corresponding measurement in the basic device. The respective softkeys are described in the manual for the basic device.

Software Manual 1007.9800.42 - 06 90

Page 93

S-K83 Configuration of cdma2000 Measurements

6.6.16 Measurement screen settings – DISP key

The menu of the DISP key contains softkeys for configuring the measurement screen. The menus and the softkey properties are described in the manual for the basic device.

6.6.17 Storing and loading of device data – FILE key

The FILE menu is the same as that of the basic device. All softkeys are described in the manual for the basic device.

6.6.18 Preset of device – PRESET key

The PRESET key presets the device. The behaviour is the same as of the basic unit and is described in the manual for the basic unit.

6.6.19 Calibration of device – CAL key

The menu CAL is the same as that of the basic unit. All softkeys are described in the manual for the basic unit.

6.6.20 Setup of device – SETUP key

The menu SETUP is the same as that of the basic unit. All softkeys are described in the manual for the basic unit. The usage of transducer factors is possible in the CodeDomain as well as in the RF measurements.

Using the R&S FS-K9 “Measurements with Power Sensor” is also possible within that application. Therefore the FS-K9 must be installed and the option key must be entered, then in the sidemenu the sofkey POWERMETER is available. For further details of the FSK9 please refer to the R&S FS-K9 software manual.

6.6.21 Printing – HCOPY key

The menu HCOPY is the same as that of the basic unit. All softkeys are described in the manual for the basic unit.

All keys on the front panel of the unit that are not specifically mentioned are identical to those of the basic unit. The functions of the keys and the softkeys are described in the manual of the basic unit.

Software Manual 1007.9800.42 - 06 91

Page 94

S-K83 Remote Control Commands

7 Remote Control Commands

This chapter describes the remote control commands for the application firmware. An alphabetical list following the description provides a quick overview of the commands.

The commands, which also apply to the basic device in SPECTRUM mode, and the system settings are described in the operating manual for the analyzer.

7.1 CALCulate:FEED subsystem

The CALCulate:FEED subsystem selects the type of analysis for the measured data. This corresponds to the result display selection in manual operation.

CALCulate<1|2>:FEED <string>

This command selects the measured data that will be displayed.

Parameter

The meanings of the string parameters are as follows:

'XPOW:CDP' Result display of the code domain power absolute

in the bar chart (CALCulate<1>)

'XPOW:CDP:RAT' Result display of the code domain error power in

the bar chart (CALCulate<1>)‘

'XPOW:CDEP' Ergebnisdarstellung der Code-Domain-Error-Power

im Balkendiagramm (CALCulate<1>) 'XTIM:CDP:ERR:SUMM' Tabular analysis of results (CALCulate2)‘ 'XTIM:CDP:ERR:CTABle' Display of the channel occupancy table

(CALCulate<1>)‘ 'XTIM:CDP:ERR:PCDomain'

'XTIM:CDP:MACCuracy' Result display of the composite EVM

'XTIM:CDP:PVSLot' Result display of power versus power control group

Result display of the peak code domain error

(CALCulate2)‘

Software Manual 1007.9800.42 - 06 92

Page 95

different from these two (e.g. the Channel Occupancy table), you leave Overview mode

S-K83 Remote Control Commands

'XTIM:CDP:PVSYmbol' Result display of power versus symbol

(CALCulate2)‘ 'XTIM:CDP:BSTReam' Result display of bit stream (CALCulate2)‘ 'XTIM:CDP:SYMB:CONSt' Result display of symbol constellation

(CALCulate2)‘ 'XTIM:CDP:SYMB:EVM' Result display of error vector magnitude

CALCulate2)‘

( 'XTIM:CDP:COMP:CONSt' Result display of composite constellation

(CALCulate2)

Example

INST:SEL MC2K 'Activate cdma2000 MS

INIT:CONT OFF 'Select single sweep

CALC2:FEED 'XTIM:CDP:MACC' 'Select COMP EVM analysis

INIT;*WAI

'Start measurement with synchronization

TRAC? TRACE2 'Query COMP EVM data

Characteristics

*RST value: 'XPOW:CDP:RAT' (CALC<1>)

'XTIM:CDP:ERR:SUMM' (CALC<2>)

SCPI: konform

The code domain power measurements are always shown in split screen mode and the allocation of the analysis to the measurement window is fixed. Therefore, specify for every analysis in brackets the numerical suffix that is necessary or allowed at CALCulate. To activate the Overview mode for Code Domain Power and Code Domain ErrorPower, you must use the CDP:OVER ON command. If you then switch to an analysis

and the analysis you used last is restored on the other screen.

Software Manual 1007.9800.42 - 06 93

Page 96

S-K83 Remote Control Commands

7.2 CALCulate:LIMit:SPECtrum Subsystem

The CALCulate:LIMit:SPECtrum subsystem defines the limit check for spectral measurements.

CALCulate:LIMit:ESPectrum:CHECk:X?;Y?

These commands query the worst fail position.

Example

INST:SEL MC2K 'Activate cdma2000 MS

INIT:CONT OFF 'Select single sweep

CONF:CDP:MEAS ESP 'Select spectrum emission mask measurement

INIT;*WAI 'Start measurement with synchronization

CALC:LIM:ESP:CHEC:X?;Y? 'Query result of worst fail position

Characteristics

*RST value: -- SCPI: device-specific

CALCulate:LIMit:ESPectrum:MODE AUTO | USER

This command automatically enables and disables automatic selection of the limit line in the spectrum emission mask measurement.

The limit lines normally depend on the selected band class. (Command CONF:CDP:BCL)

Parameter

AUTO

USER Query only, user-defined limit lines are enabled (refer to the description of

The limit line depends on the measured channel power.

limit lines in the manual for the device)

Software Manual 1007.9800.42 - 06 94

Page 97

S-K83 Remote Control Commands

Example

INST:SEL MC2K 'Activate cdma2000 MS

INIT:CONT OFF 'Select single sweep

CONF:CDP:BCL 1 'Select band class 1, 1900 MHz

CONF:CDP:MEAS ESP 'Measure spectrum emission Select mask

CALC:LIM:ESP:MODE AUTO 'Activates automatic selection of limit line

INIT;*WAI 'Start measurement with synchronization

CALC:LIM:FAIL? 'Query result of the limit check

Characteristics

*RST value: AUTO SCPI: device-specific

CALCulate:LIMit:ESPectrum:RESTore

This command restores the standard limit lines for the spectrum emission mask measurement. All changes made to the standard limit lines are lost and the state of these limit lines as they left the factory is restored.

Example

INST MC2K 'Switches the device to cdma2000 MS mode

CALC:LIM:ESP:REST 'Resets the spectrum emission mask limit lines to their default setting

Characteristics

*RST value: -- SCPI: device-specific

This command is an event and therefore has neither a query function nor a *RST value.

CALCulate:LIMit:ESPectrum:TRANsition 0 ... 1 GHz

This command specifies the offset frequency at which the resolution bandwidth is changed between 30k and 1MHz.

Example

INST:SEL BC2K 'Activate cdma2000 MS

Software Manual 1007.9800.42 - 06 95

Page 98

S-K83 Remote Control Commands

INIT:CONT OFF 'Select single sweep

CONF:CDP:BCL 1 'Select band class 1, 1900 MH

CONF:CDP:MEAS ESP

Select spectrum emission mask measurement

CALC:LIM:ESP:TRAN 10MHz 'Set the offset frequency to 10 MHz fest

Characteristics

*RST value: 4.0 MHz (depended on the band class) SCPI: device-specific

7.3 CALCulate:MARKer - Subsystem

Thi s command queries the measured and calculat ed values of the Code Dom ain Power analysis. The channel results are given for the channel to which the code selected using the command CDPower:CODe belongs.

Parameter

Global results of the selected PCG

SLOT PCG number PTOTal Total power in dBm FERRor Frequency error in Hz PPICh RHO RHO CERRor Chip rate error in ppm MACCuracy Composite EVM in % TFRame Trigger to frame PCDerror Peak code domain error in dB ACTive IQIMbalance IQ imbalance in % IQOFfset IQ offset in %

Pilot power in dBm FERPpm Frequency error in ppm

Global results of all PCGs

Number of active channels

Channel results:

SRATe Symbol rate in ksps TOFFset Timing offset in s

CHANnel Channel number POFFset Phase offset in rad

SFACtor

CDPRelative Channel Power relativ in dB CDPabsolute Channel power absolute in

Spreading factor of channel

dBm (rrelative to total or

PICH power, refer to command

EVMRms Error Vector Magnitude RMS in % EVMPeak Error Vector Mag. Peak in %

CDP:PREF)

Software Manual 1007.9800.42 - 06 96

Page 99

.The

if timing and phase

) or the number of active channels is higher

S-K83 Remote Control Commands

The Trigger to Frame value (TFRame) supplies a '9' if the trigger is at FREE RUN Timing/Phase Offset values (TOFFset/POFFset) supply a '9' measurement is disabled (refer to CDP:TPM than 50.

Example

INST:SEL MC2K 'Activate cdma2000 MS, implicit are CDP relative on Screen A and Result Summary active on Screen B

INIT:CONT OFF 'Select single sweep.

INIT;*WAI 'Start measurement with synchronization.

CALC:MARK:FUNC:CDP:RES? PTOT 'Read out total power.

CDP:SLOT 2 'Selects power control group 2.

CDP:CODE 11 'Select code number 11.

CALC:MARK:FUNC:CDP:RES? EVMR 'Read out EVM RMS of code with number 11 in PCG 2.

Characteristics

*RST value: SCPI: device-specific

CALCulate<1|2>:MARKer<1>:FUNCtion:PICH

This command sets marker1 to channel 0.16, 0.32 or 0.32, depending on the base spreading factor.

Example

INST:SEL MC2K 'Activate cdma2000 MS, implicit are CDP relative on Screen A and Result Summary active on Screen B

INIT:CONT OFF 'Select single sweep.

INIT;*WAI 'Start measurement with synchronization.

CALC:MARK:FUNC:PICH 'Activate marker and on pilot

CALC:MARK:Y? 'Query value of CDP rel. of PICH.

Software Manual 1007.9800.42 - 06 97

Page 100

S-K83 Remote Control Commands

Characteristics

*RST value: SCPI: device-specific

This command is an "event" and therefore has neither a *RST value nor a query function.

7.4 CALCulate:PEAKsearch | PSEarch- Subsystem

CALCulate<1|2>:PEAKsearch:AUTO ON | OFF

By using this command, the peak list in the spurious measurement is calculated automatically after a measurement. For each range, exactly one peak value is calculated.

The SENSe suffix is unused

Example

CALC:PEAK:AUTO ON 'Switches the automatic peak search on

Characteristics

*RST value: OFF SCPI: device-specific

7.5 CALCulate:STATistics - Subsystem

The CALCulate:STATistics subsystem controls the statistical measurement functions in the device. The measurement window cannot be selected for these measurement functions. The numerical suffix is ignored accordingly with CALCulate.

CALCulate:STATistics:CCDF[:STATe] ON | OFF

This command enables and disables measurement of the complementary cumulated distribution function (CCDF).

Example:

CALC:STAT:CCDF ON

Characteristics

*RST value: OFF SCPI: device-specific

CALCulate:STATistics:NSAMples 100 ... 1E9

This command sets the number of measurement points for the statistical measurement functions.

Software Manual 1007.9800.42 - 06 98