Rohde & Schwarz CMW500 Radio Communication Tester, VTE, VTC Video Analyzer, CMWrun Test Software Application Note
Below you will find brief information for Radio Communication Tester CMW500, Video Analyzer VTE, Video Analyzer VTC, Test Software CMWrun. This application note shows how to determine the quality of a video streamed by an LTE mobile with R&S®CMW500 Radio Communication Tester and R&S®VTE Video Analyzer. The R&S®CMWrun Test Software with CMW-KT051 General Purpose and CMW-KT105 AV Difference Analysis option allows the user to easily automate these tests.
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LTE Video Quality Measurements with
R&S CMWrun
Application Note
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Products:
ı
R&S
®
CMW500
R&S
®
VTC
R&S
®
VTE
R&S
®
CMWrun
This application note shows how to determine the quality of a video streamed by an LTE mobile with
R&S
®
CMW500 Radio Communication Tester and
R&S
®
VTE Video Analyzer. The R&S
®
CMWrun
Test Software with CMW-KT051 General Purpose and CMW-KT105 AV Difference Analysis option allows the user to easily automate these tests.
Table of Contents
Table of Contents
3 Hardware Configuration ..................................................................... 7
4 Software Configuration ...................................................................... 8
5 CMWrun Test Plan ............................................................................ 12
(Enables EP5Low fading on CMW) .............................................20
(Stop video playback on DUT) ................................................25
7 Ordering Information ........................................................................ 32
Rohde & Schwarz LTE Video Quality Measurements with R&S CMWrun 2
Introduction
1 Introduction
The increasing demand for hi-res video applications for mobile phones and tablets makes it necessary to maintain the necessary data rate even under non ideal RF and
IP transmission conditions. The video test system described in this application note consists of an R&S
®
CMW500 Wideband Radio Communication Tester and an
R&S
®
VTE or R&S
®
VTC Video Tester that is controlled by the R&S
®
CMWrun
Measurement Software with an additional VTx feature. The figure below shows this compact, but complete Video over LTE test solution. The R&S
®
CMW acts as an LTE base station sending a video to the DUT via RF under fading or IP impairment conditions. From the mobile device’s MHL / HDMI socket the decoded video signal is fed to the R&S
®
VTE or R&S
®
VTC Video Analyzer.
Fig. 1-1: Video Test System
The CMW-KT051 option contains functions for degrading the video data stream with fading and IP impairment, while the CMW-KT105 option contains functions for configuring and analyzing the video with an R&S
®
VTx Video Tester.
Rohde & Schwarz LTE Video Quality Measurements with R&S CMWrun 3
Introduction
One characteristic for video quality is the channel capacity (kbps) over SNR (Signal to
Noise Ratio) dependency.
Fig. 1-2: Channel Capacity vs. SNR
With no disturber such as fading a picture fails as soon as the channel capacity drops below the threshold. With e.g. EVA 5Hz or EPA 70 Hz the picture failure point is located at significantly higher SNRs, making the signal much more sensitive to signal quality.
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The following abbreviations are used in the following text for R&S
®
test equipment:
The R&S
®
CMWrun Measurement Software is referred to as CMWrun.
The R&S
®
CMW500 Wideband Communication Tester is referred to as CMW.
The R&S
®
VTE Video Analyzer is referred to as VTE.
The R&S
®
VTC Video Analyzer is referred to as VTC.
The R&S
®
VTE or R&S
®
VTC Video Analyzer are referred to as VTx.
R&S
®
stands for Rohde & Schwarz GmbH & Co KG.
Rohde & Schwarz LTE Video Quality Measurements with R&S CMWrun 4
Overview
2 Overview
Fig. 2-1: A/V Distortion Analysis
The VTx video analyzer series A/V Distortion Analysis feature compares the video and audio output signal of a DUT with a reference Signal recorded earlier. For recording the reference signal, use the same video material and signal path. The A/V Distortion
Analysis does not evaluate the absolute video and audio quality, but the deviation to a recorded reference. Using a reference signal has the advantage that all scaling happening along the video processing chain is excluded from the test. Instead the performance of the DUT is evaluated and all influence caused by erratic behavior of the DUT or disturbances can reliably be identified.
VTx AV Distortion Analysis allows 3 different methods of referencing:
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S
ELF
R
EFERENCED
: Every transmitted single image is compared to the one transmitted before. This requires no reference recording and is used for testing e.g. image stabilizers.
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S
TILL
P
ICTURE
: The DUT plays a fixed image in an endless loop. This image is saved once as reference. This method is appropriate for e.g. identifying pixel errors.
L
OOP
–
APL / L
OOP
–
APL S
ECTION
/ L
OOP
–
T
IME
C
ODE
: Any A/V sequence with maximally 15 to 60 seconds refresh rate can be used as reference, which is kept the VTx memory during the analysis. The DUT plays the A/V sequence in an endless loop for continuous testing. The example in the following chapter uses
L
OOP
T
IME
C
ODE
referencing.
In order to analyze single pixels, a frame is scaled to 720x576 pixels and transformed to the Y / Cb / Cr 4:2:0 format. This assures constant speed for the following analysis and is independent from the number of input pixels. When the input pixels are filled with RGB (red/green/blue) color information, they are equivalently recalculated in brightness Y and two color difference components Cb and Cr. Then the color difference information is under sampled twice in horizontal and vertical direction
Rohde & Schwarz LTE Video Quality Measurements with R&S CMWrun 5
Overview
(4:2:0), because the human eye can detect brightness much better than color information. This transformation has no effect on image deviance identification.
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The video output signal of a defective DUT can differ from the reference sequence in multitude manner. Each case can be reliably be detected:
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D
IFFERING PIXELS IN A FRAME
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U
NEXPECTED SINGLE FRAME
▪
▪
▪
Picture Freeze
Black Frames
Dropped Frames
A
LTERNATING AUDIO LEVEL
D
EVIATING SYNCHRONIZATION
▪
▪
Fluctuating single image refresh rate (rendering rate)
Delay between video and audio changes
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Besides deviance quantizing, R&S A/V Distortion Analysis has the capability to interpret how intense the errors are detected by humans:
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MOS-V (Mean Opinion Score
– Video)
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V
ISIBLE
E
RROR
P
A
ICTURE
UDIO
F
F
AILURE
AILURE
P
P
OINT
OINT
The capabilities above allow easy test sequence automation for specifying visible and audible errors as fail criteria.
A further feature of the VTx A/V Distortion Analysis is to recognize so called overlays during reference sequence recording. Overlays can be control panels of the playing device, status information or logos that cover part of the video content during playback.
This allows the measurement to focus on the actual video content without being disturbed by unexpected overlay content.
Rohde & Schwarz LTE Video Quality Measurements with R&S CMWrun 6
Hardware Configuration
3 Hardware Configuration
Connect the CMWrun PC to both instruments via LAN switch. Connect the mobile device to the CMW CH1 in/out connector via RF cable or OTA (Over the Air) with a
CMW-Z10 shielded chamber.
Fig. 3-1: Video Distortion Measurement Setup
To avoid conflicts, the IP addresses assigned to the computer and the two testers must use a different subnet than the Data Application Unit (DAU) installed in the CMW.
Rohde & Schwarz LTE Video Quality Measurements with R&S CMWrun 7
Software Configuration
4 Software Configuration
For this application the controller PC must have CMWrun 1.7.8 or higher installed.
Additionally, the CMW-KT105 VTx AV Distortion Tests and the CMW-KT051 General
Purpose options need to be activated.
Fig. 4-1: VTx AV Distortion Functions
The CMW-KT105 VTx Distortion Tests option contains two functions:
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S
ET
AVR
EFERENCE
- Configures the referencing process of the test video. When running the test plan, the reference video is synchronized and the reference video information is evaluated. This test item needs to be performed at least once for a specific mobile & media file combination. As soon as a different media file is played or a different DUT is used, the reference file must be generated again to ensure valid and precise test results.
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M
EASURE
AVD
ISTORTION
- Configures the settings and the execution steps for the video measurements. When running the test plan, video quality measurements by assessment between the reference video and the incoming video are performed.
If a reference file already has been recorded, you can set it here and skip the preceding SetAVReference test item.
Rohde & Schwarz LTE Video Quality Measurements with R&S CMWrun 8
Software Configuration
4.1 Test Results
The R
EFERENCE
V
IDEO
I
NFORMATION
is displayed in the M
EASUREMENT
R
EPORT
sub tab.
4.2 Measure Video
Configure the settings and the execution steps for the video measurements. When running the test plan, video quality measurements by assessment between the reference and the incoming video are performed.
4.2.1 Test Configuration
The test case parameters for the picture failure point measurement are grouped in the
T
EST
P
ROPERTIES
dialog, see Fig. 3-7.
Reference Setup
Configure desired setup.
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C
URRENT
S
ETUP
– Only available if the S
ET
R
EFERENCE
V
IDEO
test module has been executed. The reference file information is used for the VTx setup.
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L
OAD FROM
F
ILE
– Uses a previously saved reference file for the video measurement. Select the input type. Click L
OAD
to select the reference file. In this setup the S
ET
R
EFERENCE
V
IDEO
test module does not have to be executed first.
Fig. 4-2: Load Reference Setup File from instrument e.g. VTx
Rohde & Schwarz LTE Video Quality Measurements with R&S CMWrun 9
Failure Point
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V
ISIBLE
E
RROR
–
Software Configuration
Fig. 4-3: Visible Area Failure
▪
▪
▪
The following visible error criteria can be varied (see figure 4-3):
T
HRESHOLD
SSIM
– Structural Similarity. Range: 0 to 100
T
HRESHOLD
PSNR
– Peak Signal to Noise Ratio. Range: 0 to 100 dB
D
URATION
– Range: 20 to 999 ms
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P
ICTURE
F
AILURE
P
OINT
– The picture failure point (PFP) is analyzed based on the testing conditions and the assessment criteria. The picture failure point results are determined by the number of periods with visible error. The picture failure point condition is configured with following parameters:
L
ENGTH OF
P
ERIOD
– Range: 1 s to 60 s
T
OTAL
N
UMBER OF
P
ERIOD
(
S
)
– Range: 1 to 99
G
AP BETWEEN
P
ERIODS
– Range: 0 s to 60 s
A
LLOWED
P
ERIODS WITH
V
ISIBLE
E
RROR
– Minimum value: 0; maximum value <
"Total Number of Period(s)"
Rohde & Schwarz LTE Video Quality Measurements with R&S CMWrun 10
Software Configuration
Result
Configure the result items that are displayed in the test results. Select the video quality assessment criteria for testing with limit configuration. The selected items are measured during the test and the results are compared with the limit value. The selected items are displayed in the report.
Fig. 4-4: Test Properties dialog for MeasureVideo test module
4.2.2 Test Results
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The following results are displayed in the M
EASUREMENT
R
EPORT
sub tab:
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Reference video information
Summary of the picture failure point result
Results selected under R
ESULT
(Fig. 4-4)
Fig. 4-5: MeasureVideo tab, Measurement Report sub tab (test results)
Rohde & Schwarz LTE Video Quality Measurements with R&S CMWrun 11
CMWrun Test Plan
5 CMWrun Test Plan
Before running a test plan, it is necessary to define the remote addresses of the involved devices CMW and VTx. Select menu R
ESOURCES
SCPI
C
ONNECTIONS
…. In
SCPI Connections check the desired device and press C
ONFIGURE
….
Fig. 5-1: Edit Resource Name of device
Keep the Alias default name VTx, because this is used in the demo later on. Enter the
Resource Name, e.g. VTE-100102 (with correct pre- and postfix). The default Timeout
(20 s) should be sufficient for most applications. Press Test Connection to check if the device is present.
Fig. 5-2: Test Connection to device
Rohde & Schwarz LTE Video Quality Measurements with R&S CMWrun 12
CMWrun Test Plan
5.1 Configuring LTE SISO Example with Fading
CMWrun version 1.7.8 and higher contains an LTE End2End example with SISO connection and fading. This example allows an easy setup and demonstrates the use of E2E (CMW-KT051 General Purpose) and video analysis (CMW-KT105 VTx AV
Distortion) functions.
Fig. 5-3: LTE E2E SISO Fading example
In CMWrun select the menu item T
EST
P
LANS
I
NSTALLED
LTE
LTE_E
ND
2E
ND
_B
AND
17_SISO_V
IDEO
A
NALYSIS
_VTE_F
ADING
.
RSTP
and save it as e.g.
LTE_E2E_B
ND
13_SISO_V
ID
A
NA
_VTE_F
AD
.
The test steps are described below.
5.1.1 BasicInitializing
Fig. 5-4: Basic Initializing menu
Rohde & Schwarz LTE Video Quality Measurements with R&S CMWrun 13
CMWrun Test Plan
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R
ESET
I
NSTRUMENTS
– If checked, all instruments in the SCPI Connections list are reset.
R
EPORT
I
NSTRUMENT
O
PTIONS
– If checked, the hard- and software options of the instruments from the SCPI Connections appear in the test report.
I
NDIVIDUAL
T
EST
P
LAN
C
OMMENT
– Allows to add a comment which appears in the test plan.
5.1.2 AttenuationTables
Compensates input and output cable losses. Only active when A
PPLY
is checked.
In this example setup the cable loss is 1.5 dB for downlink and uplink.
Fig. 5-5: Set Attenuation Table
Rohde & Schwarz LTE Video Quality Measurements with R&S CMWrun 14
CMWrun Test Plan
5.1.3 LTE Call Setup (Configure BS)
Configures the UE (User Equipment) calling parameters. Please note that the base station is only configured in this step and will be turned ON later.
Fig. 5-6: LTE Call Setup
The connection parameters used here (Resource Blocks 50, 16-QAM, TBS Index 14) allow 14.111 Mbps maximum throughput.
5.1.4 SCPICommandList (Turn CMW Fading ON)
Contains SCPI command for turning ON the CMW500 internal fading. This must be done before the call is established or else the call may be dropped by the DUT unexpectedly.
Rohde & Schwarz LTE Video Quality Measurements with R&S CMWrun 15
CMWrun Test Plan
5.1.5 LTECallSetup (Turn BS ON)
Turns on the base station and then notifies the operator to power ON the DUT, attaches to the mobile and reports the DUT info.
Fig. 5-7: Base station ON and mobile attach
5.1.6 E2E Setup
In this dialog the IP address of the End 2 End data application is configured. The IPv4 address is automatically determined by the CMW500 network.
Fig. 5-8: End 2 End Setup
Rohde & Schwarz LTE Video Quality Measurements with R&S CMWrun 16
CMWrun Test Plan
5.1.7 UserNotificationBox (Start Video on Mobile)
Notifies the operator to start the video player on the mobile device (select video streaming app, e.g. Daroon Player, VLC for Andriod, etc.).
Fig. 5-9: User Notification Box
Start the video streaming player on the mobile. Select and play one of the videos from
CMW500 network server
RTSP
:://172.22.1.201.
Note: The video files from the CMW-KT105 option (T
ALK
-360
P
_25H
Z
_200
KBPS
.
MOV
,
T
ALK
-480
P
_25H
Z
_1M
BPS
.
MOV
, T
ALK
-720
P
_25H
Z
_10M
BPS
.
MOV
and T
ALK
-
720
P
_25H
Z
_5M
BPS
.
MOV
) must be copied to the CMW network drive DAU
S
AMBA
S
ERVER
(Z:)\
MULTIMEDIA
directory first. It is necessary that the media player on the LTE device can play the video in
LOOPED MODE
(not supported by all media players).
Fig. 5-10: CMW DAU network drive for multimedia files
Rohde & Schwarz LTE Video Quality Measurements with R&S CMWrun 17
CMWrun Test Plan
5.1.8 SetAVReference
Configures the input, synchronization area to extract the time code from the reference frames for comparison with the corresponding target frames.
Fig. 5-11: Set AV Reference
In this example, a mobile with an MHL connector is used. It is convenient to use L
OOP
–
T
IME
C
ODE
synchronization with a mobile device, since frames can get lost, making the reference measurement useless. The lower 20% of a frame are usually used to insert the time code (usually invisible for the viewer).
Rohde & Schwarz LTE Video Quality Measurements with R&S CMWrun 18
CMWrun Test Plan
When a particular video file is used for the first time, it is convenient to save it as reference file (*.avr). Check the S
AVE
check box and press S
ET
F
ILENAME
.
Fig. 5-12: Save Reference File
The file is saved in D:\VTE\USERDATA\ (VTE) or D:\VTC\USERDATA\ (VTC). The information about reference video also appears in the measurement report.
Fig. 5-13: Reference Video Information
Rohde & Schwarz LTE Video Quality Measurements with R&S CMWrun 19
CMWrun Test Plan
5.1.9 SCPIC
OMMAND
L
IST
(Enables EP5Low fading on CMW)
Fig. 5-14: Enables EPA 5Hz Low fading
The CMW allows numerous internal fading standards:
Fig. 5-15: CMW internal fading standards
Please refer to the CMW user manual for the appropriate SCPI commands.
Rohde & Schwarz LTE Video Quality Measurements with R&S CMWrun 20
CMWrun Test Plan
5.1.10 E2E_SetPacketLossRate
IP impairment function that simply ‘loses’ a defined amount of data blocks.
Fig. 5-16: E2E Set Packet Loss Rate
5.1.11 E2E_SetDelay
IP impairment function that delays the video data blocks by a defined duration.
Fig. 5-17: E2E Set Delay
Rohde & Schwarz LTE Video Quality Measurements with R&S CMWrun 21
CMWrun Test Plan
5.1.12 E2E_SetJitter
IP impairment function that alternates the video data block delay according to a defined sequence.
Fig. 5-18: E2E Set Jitter
The E2E functions are activated by checking SetPacketLossRate, SetDelay and
SetJitter.
The corresponding parameters are set in the P
ARAMETER
T
ABLE
.
Fig. 5-19: Parameter Table
The E2E function parameter can be identified easily by adding an according comment.
Fig. 5-20: E2E Functions with Comments
5.1.13 MeasureAVDistortion
Configures the used reference, failure points and the test limits.
Rohde & Schwarz LTE Video Quality Measurements with R&S CMWrun 22
CMWrun Test Plan
Fig. 5-21: Measure AV Distortion
5.1.13.1 Reference Setup
Determines if the current setup of the VTx is used or if a defined Reference File is loaded. If a reference file is available the preceding test SetAVReference does not need to be carried out.
5.1.13.2 Failure Point
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V
ISIBLE
E
RROR
Fig. 5-22: Visible Error Failure
Rohde & Schwarz LTE Video Quality Measurements with R&S CMWrun 23
CMWrun Test Plan
▪
▪
▪
Following visible error criteria can be varied (see figure 5-22):
T
HRESHOLD
SSIM
– Structural Similarity. Range: 0 to 100
T
HRESHOLD
PSNR
– Peak Signal to Noise Ratio. Range: 0 to 100 dB
D
URATION
– Range: 20 to 999 ms
ı
P
ICTURE
F
AILURE
P
OINT
– The picture failure point (PFP) is analyzed based on the testing conditions and the assessment criteria. The PFP results are determined by the number of periods with visible error.
Fig. 5-23: Picture Failure Point
▪
▪
▪
▪
The PFP condition is configured with following parameters:
L
ENGTH OF
P
ERIOD
– Range: 1 s to 60 s
T
OTAL
N
UMBER OF
P
ERIOD
(
S
)
– Range: 1 to 99
G
AP BETWEEN
P
ERIODS
– Range: 0 s to 60 s
A
LLOWED
P
ERIODS WITH
V
ISIBLE
E
RROR
– Minimum value: 0; maximum value
< "Total Number of Period(s)"
5.1.13.3 Result
The checked items are measured during the test and the results compared to the limit values.
Fig. 5-24: Result Items
Rohde & Schwarz LTE Video Quality Measurements with R&S CMWrun 24
5.1.14 U
SER
N
OTIFICATION
B
OX
(Stop video playback on DUT)
This notifies the user to stop the video player on the mobile phone.
CMWrun Test Plan
Fig. 5-25: User Notification Box
5.1.15 LTECallDisconnect
CMW terminates the call and turns OFF the base station emulation.
Fig. 5-26: LTE Call Disconnect
Rohde & Schwarz LTE Video Quality Measurements with R&S CMWrun 25
CMWrun Test Plan
5.2 Running the Test
The test can be started either by clicking on the R
UN
button or pressing F5.
Fig. 5-27: Run Test
After the instruments have been reset and configured, a message appears, telling you to power OFF and the ON again the DUT. This ensures that the LTE call procedure always starts from a defined point.
Fig. 5-28: Power mobile OFF and ON
A message appears to inform you that the appropriate video for the test can now be started / streamed for playback.
Fig. 5-29: Start video
For this example the D
AROON
player was used. Select Streams and add the full path and name to the favorites list, e.g.
RTSP
://172.22.1.201/T
ALK
-720
P
_25H
Z
_5M
BPS
.
MOV
and start the video.
Rohde & Schwarz LTE Video Quality Measurements with R&S CMWrun 26
CMWrun Test Plan
Now the video is referenced under ideal conditions (no fading or ip impairment) which is also stated with the following message:
Fig. 5-30: Synchronizing video for reference measurement
After the reference video has been recorded, the disturbing effects, like fading, IP packet loss rate, delay and jitter are turned ON. In this example all effects run simultaneously. Other test cases might vary only one effect for obtaining the correlation between video quality and e.g. delay.
During the A/V distortion measurement a timer display the current time remaining.
Fig. 5-31: Remaining test time
After the test, please stop the video player on the mobile phone.
Fig. 5-32: Stop video player on mobile phone
As was shown with this example, it is very straight forward to run even complex video test scenarios using a CMWrun test plan.
Rohde & Schwarz LTE Video Quality Measurements with R&S CMWrun 27
CMWrun Test Plan
In the last step a measurement report (similar to this one) is generated.
Rohde & Schwarz LTE Video Quality Measurements with R&S CMWrun 28
CMWrun Test Plan
Rohde & Schwarz LTE Video Quality Measurements with R&S CMWrun 29
CMWrun Test Plan
Rohde & Schwarz LTE Video Quality Measurements with R&S CMWrun 30
Literature
6 Literature
[1] Application Note 7BM84
, “R&S
®
Time Code Inserter: AV Distortion Analysis of Every
Video Format
”
[2]
Application Note 7BM87, “R&S A/V Distortion Analysis – Inspecting Output Quality of Audio and Video Devices
”
[3] Application Note 1MA119 "R&S VTx Manual"
Rohde & Schwarz LTE Video Quality Measurements with R&S CMWrun 31
Ordering Information
7 Ordering Information
Ordering Information
Wideband Radio Communication Tester
R&S
®
CMW500
CMW-PS503
Wideband Radio Communication Tester
Basic Assembly (mainframe), 70 MHz to 3.3 GHz
CMW-S550B
CMW-S590A
Basic Interconnection, flexible link, for non-signaling, signaling and
IQ access
RF front end, advanced functionality
CMW-S600B
CMW500 front panel with display/keypad
CMW-B570B
RF Converter (TRX)
CMW-S100A
Baseband Measurement Unit, 1 GB memory
CMW-B300B
Signaling Unit Wideband (SUW), for WCDMA / LTE
CMW-B450D
Data Application Unit, H450A
CMW-B660A
Option Carrier
CMW-B661A
Ethernet Switch Board
CMW-B690B
OCXO, high stability
CMW-PK45
CMW-KS500
E2E Bundle including IP Enabler, IMS, and IP Measurements and
Analysis
LTE FDD Release 8, SISO, signaling/network emulation
CMW-KS510
LTE Release 8, SISO, signaling / network emulation, advanced functionality
Video Analyzer
R&S ® VTE
R&S
®
VTC
R&S ® VT-B2350
R&S ® VT-B2360
R&S
®
VT-B2361
R&S
®
VT-B360
Video Test Center
Video Tester
MHL Analyzer/Generator Module
HDMI Analyzer Module 225 MHz (optional)
HDMI Analyzer Module 300 MHz (optional)
HDMI Generator Module (optional)
Measurement Software
CMWPC
PC based CMW applications
CMW-KT051
R&S
®
CMWrun sequencer tool, CMWrun generic proposal
CMW-KT055
R&S ® CMWrun sequencer tool, LTE applications
1201.0002K50
1208.7154.02
1202.4801.03
1202.5108.02
1202.0102.03
1202.5008.03
1202.4701.02
1202.6304.02
1202.8759.05
1202.7000.02
1202.7100.02
1202.6004.02
1207.6354.03
1203.6108.02
1203.9859.02
2115.7400.02
2115.7300.02
2115.7622.06
2115.7616.06
2115.7639.06
2115.7500.06
1201.0002.90
1203.4157.02
1207.2107.02
Rohde & Schwarz LTE Video Quality Measurements with R&S CMWrun 32
About Rohde & Schwarz
Rohde & Schwarz is an independent group of companies specializing in electronics. It is a leading supplier of solutions in the fields of test and measurement, broadcasting, radiomonitoring and radiolocation, as well as secure communications.
Established more than 75 years ago, Rohde &
Schwarz has a global presence and a dedicated service network in over 70 countries. Company headquarters are in Munich, Germany.
Regional contact
Europe, Africa, Middle East
+49 89 4129 12345 [email protected]
North America
1-888-TEST-RSA (1-888-837-8772) [email protected]
Latin America
+1-410-910-7988 [email protected]
Asia/Pacific
+65 65 13 04 88 [email protected]
China
+86-800-810-8228 /+86-400-650-5896 [email protected]
Environmental commitment
ı
ı
Energy-efficient products
Continuous improvement in environmental sustainability
ı
ISO 14001-certified environmental management system
This and the supplied programs may only be used subject to the conditions of use set forth in the download area of the Rohde & Schwarz website.
R&S
®
is a registered trademark of Rohde & Schwarz GmbH & Co.
KG; Trade names are trademarks of the owners.
Rohde & Schwarz GmbH & Co. KG
Mühldorfstraße 15 | D - 81671 München
Phone + 49 89 4129 - 0 | Fax + 49 89 4129
– 13777 www.rohde-schwarz.com
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Key Features
- Determines video quality
- Automates testing of LTE mobiles
- Measures video quality over LTE
- Uses CMW500 Radio Communication Tester
- Uses VTE or VTC Video Analyzer
- Uses CMWrun Test Software
- Supports fading and IP impairment
- Provides A/V Distortion Analysis
- Generates test reports
- Supports various video formats
