DATASHEET
July 2023
DTU-331
0-3GHz RF Probe for USB-3
DTU-331 Datasheet
0-3GHz RF Probe for USB-3
2
Table of Contents
1. Introduction ................................................................................................ 3
Overview ......................................................................................................................... 3
Software Defined Radio (SDR) ........................................................................................... 3
Features .......................................................................................................................... 3
Applications .................................................................................................................... 4
Operating the DTU-331 ................................................................................................... 4
Standard Applications for the DTU-331 Provided by DekTec .............................................. 5
Developing Custom Applications for the DTU-331 ............................................................. 5
2. Options Available for the DTU-331 .............................................................. 6
3. Operating the DTU-331 .............................................................................. 7
Summary ......................................................................................................................... 7
USB-3 Port ...................................................................................................................... 7
USB-3 Cable ................................................................................................................... 7
USB-3 Host Controller ...................................................................................................... 8
Host CPU ........................................................................................................................ 8
Operating System ............................................................................................................ 8
Resolving USB-Related Issues ............................................................................................ 9
4. Overview of DTU-331 Operation ............................................................... 10
System Diagram ............................................................................................................ 10
5. Specifications ............................................................................................ 11
Ports ............................................................................................................................. 11
RF Input ......................................................................................................................... 11
Reception and Demodulation ......................................................................................... 12
Measurements ............................................................................................................... 13
Miscellaneous Specifications ........................................................................................... 14
Compliancy ................................................................................................................... 14
6. Modulation Standards ............................................................................... 15
ATSC 1.0 ...................................................................................................................... 15
ATSC 3.0 ...................................................................................................................... 16
DAB/DAB+/T-DMB ........................................................................................................ 17
DVB-C2 ........................................................................................................................ 17
DVB-CID ....................................................................................................................... 18
DVB-S ........................................................................................................................... 18
DVB-T ........................................................................................................................... 19
DVB-T2 ......................................................................................................................... 19
I/Q Samples .................................................................................................................. 20
ISDB-T / ISDB-T
SB
......................................................................................................... 20
QAM-A (DVB-C) .......................................................................................................... 21
QAM-B ....................................................................................................................... 21
QAM-C (ISDB-C) ......................................................................................................... 22
DTU-331 Datasheet
0-3GHz RF Probe for USB-3
3
1. Introduction
Overview
The DTU-331 is a portable RF probe designed to receive and demodulate digital radio and TV signals. The
device incorporates a convenient USB 3.0 type C interface for easy connectivity with a laptop or desktop com-
puter. Its power is drawn from the USB bus, eliminating the need for a separate power supply.
Figure 1. Analyzing arbitrary RF signals with the DTU-331 RF Probe.
Equipped with two tuners, the device can receive cable/terrestrial signals with a bandwidth of up to 8MHz and
satellite signals with a bandwidth of up to 60MHz. The integrated RF mixer enables a broadened tuning range
for both tuners, allowing a frequency coverage from 42 to 3220MHz.
Weighing only 500 grams, this versatile device is well-suited for portable applications with a notebook or as an
easily installable receiver for standard PCs. It can be used for field measurements with a laptop, as a portable
measurement receiver in the lab, or as a receiver front end for SDR experiments.
Software Defined Radio (SDR)
A standout feature of the DTU-331 is its utilization of software-defined radio (SDR) technology. This provides
flexibility and capabilities beyond those of traditional hardware-based demodulators.
The power of SDR is rooted in its software-centric approach to demodulation. With all I/Q samples accessible
to the analyzing software, the probe enables precise and unique RF measurements not achievable with any chip-
based demodulator solution. The SDR architecture allows the RF probe to adapt to changes in existing standards
and to accommodate emerging ones, ensuring the device maintains its future relevance and efficacy.
Overall, the DTU-331 represents a blend of advanced technology, user-centric design, and versatility, presenting
a great solution for those seeking reliable, precise, and portable RF analysis.
In conclusion, the utilization of SDR in the DTU-331 not only allows for advanced RF measurements beyond the
capabilities of traditional methods, but it also enables the reception and analysis of non-DTV signals. Further-
more, the inherent flexibility of SDR accommodates new standards, ensuring the device remains pertinent and
effective amidst evolving RF communication norms.
Features
Key RF features of the DTU-331 include:
• RF input: micro-BNC, 42 – 3220MHz.
• 8-MHz tuner equipped with a 16-bit ADC capable of receiving cable, terrestrial, and satellite standards
with a bandwidth up to 8MHz.
• 60-MHz tuner with 12-bit ADC for receiving satellite or other wide-band standards.
• RF mixer to expand the RF input range of the tuners:
o 8-MHz tuner: 42 – 3220MHz. The mixer is employed for the range 1002 – 3220MHz.
o 60-MHz tuner: 925 – 3220MHz. The mixer is employed for the range 2175 – 3220MHz.
• Facilitates digital processing of any RF signal in I/Q passthrough mode by end users.
DTU-331 Datasheet
0-3GHz RF Probe for USB-3
4
• The user can select the analog bandwidth and digital sample rate. Keep in mind that the chosen digital
sample rate should be at least twice the maximum frequency of the input signal, per the Nyquist criterion,
to ensure accurate signal representation. The available ranges are:
o 8-MHz tuner: 1 to 40Msps.
o 60-MHz tuner: 5 to 80Msps.
• A wide range of modulation standards can be demodulated and analyzed, including ATSC 3.0 and
DVB-T2, refer to §2 for a complete list.
• The DTU-331 can also serve as an I/Q sampler for any RF signal with a bandwidth up to 60MHz in the
42 to 3.22GHz range.
Applications
The DTU-331 RF probe's versatility makes it a potent tool for a variety of RF signal monitoring and analysis
applications. The following list illustrates some possible uses, though its potential applications are only limited
by user creativity.
• Comprehensive analysis of modulated Digital Television (DTV) signals at all layers, spanning from the RF
layer to audio/video and metadata streams.
• Long-term monitoring of DTV signals.
• Field measurements of terrestrial DTV signals. DekTec provides in-depth RF analysis software tailored for
ATSC 3.0, DVB-T2 and DVB-CID.
• Recording of I/Q samples in the field, with the capability to playback these samples in a lab environment
using a DekTec modulator device, such as the DTU-315
.
• Verification of the output from RF equipment, such as in a production environment.
• Decoding and analyzing of DVB-CID signals for satellite carrier identification, a unique and advanced
feature of the DTU-331 included as standard.
• Conducting SDR experiments, with the DTU-331 providing the source of I/Q samples.
• In educational contexts, the DTU-331 can be a valuable tool for learning about and experimenting with
various DTV standards.
Operating the DTU-331
Operating the DTU-331 involves the use of the DtBb2 driver, the DTAPI library, and an application that is linked
to DTAPI. DekTec offers a variety of standard applications that support the DTU-331 (refer to §1.6), or users can
develop their own application for analyzing or monitoring modulated RF streams (refer to §1.7).
Appli-
cation
DTAPI
library
DtBb 2
driver
USB-3
Figure 2. The DTAPI library and DtBb2 driver enable applications to control the DTU-331.
DTU-331 Datasheet
0-3GHz RF Probe for USB-3
5
Standard Applications for the DTU-331 Provided by DekTec
DekTec provides several standard Windows applications for the DTU-331. To run these applications, a specific
option (license) must be present in the non-volatile memory of the unit. Refer to §2 for a description of options
and the corresponding ordering codes. The following table lists the available applications and their descriptions:
Application Options required Description
StreamXpert
-SX
DekTec’s well-known stream analyzer. Please refer to §6 for a list of sup-
ported analysis functions per modulation standard.
Atsc3Xpert
-XPRT
ATSC 3.0 receiver and analyzer with advanced RF measurements and decod-
ing of all signaling information. Features recording of PLP data in PCAP files
and real-time ALP and ROUTE/MMT output over IP.
C2Xpert
-XPRT
Real-time DVB-C2 analyzer software. DVB-C2 has not been the commercial
success what was hoped for, but this analyzer is still available.
T2Xpert
-XPRT
Real-time DVB-T2 analyzer software with advanced RF measurements in de-
tailed graphs and displaying of all T2 signaling information.
Features single-PLP and multi-PLP reception, T2-Lite and T2-MI output over IP.
The following table lists the order codes required to purchase applications from DekTec.
Option Order code Note
-SX
DTC-320-SX
The DTU-331 with this option included can be ordered as DTU-331-SX.
-RC
DTC-344-XPRT
Enables advanced RF measurements with Atsc3Xpert, T2Xpert and C2Xpert
Developing Custom Applications for the DTU-331
Developers are provided the opportunity to create custom applications for the DTU-331 using the free Software
Development Kit (SDK) for DekTec devices. Currently, the SDK is exclusively available for the Windows platform.
It includes the DtBb2 device driver and the DTAPI library. The user installs the DtBb2 device driver and links the
custom application against DTAPI.
The device driver is responsible for low-level operations that require access to the DTU-331 hardware. This
includes the initiation and management of USB transfers, control of tuners, sample-rate converters and other RF
processing hardware functions, and the reading and writing of Vital Product Data (VPD). However, developers
need not delve be aware of these driver functions as they are effectively abstracted by the DTAPI library.
The device driver is responsible for low-level operations that require access to the DTU-331 hardware. This
includes the initiation and management of USB transfers, control of tuners, sample-rate converters, other RF
processing hardware functions, and the reading and writing of Vital Product Data (VPD). However, developers
need not be aware of these driver functions as they are effectively abstracted by the DTAPI library.
DTU-331 Datasheet
0-3GHz RF Probe for USB-3
6
2. Options Available for the DTU-331
The DTU-331 supports a wide range of modulation standards, listed in the table below. The probe supports
demodulation and basic RF measurements for all standards in the table. Please note that the "Included" remark
means that the option is already included in the base product and no additional license is required.
Feature Option Order code Remark
ATSC 1.0
Included*
ATSC 3.0
Included*
DAB
Included*
DVB-C2
Included*
DVB-CID
Included*
DVB-S
Included*
DVB-T
Included*
DVB-T2
Included*
I/Q samples
Included*
ISDB-T
Included*
QAM-A
Included*
QAM-B
Included*
QAM-C
Included*
Base measurements
Included*
Advanced RF measurements
Atsc3Xpert
C2Xpert
T2Xpert
-XPRT
DTC-344-XPRT
constellation diagram, spectrum, impulse response,
transfer function, and the listed applications.
StreamXpert
-SX
DTC-320-SX
* The term “Included” indicates that the feature is part of the base product, requiring no special license.
The DTU-331 includes all supported modulation standards within its base product, along with the flexibility to
obtain raw I/Q samples, thereby offering users the ability to accommodate any applicable modulation standard
without the need for additional options.
If you are considering running one of DekTec’s RF analyzer tools or writing a custom application with the Ad-
vanced Demodulator API, the -XPRT option is necessary.
DTU-331 Datasheet
0-3GHz RF Probe for USB-3
7
3. Operating the DTU-331
Summary
The DTU-331 is a high-performance device that requires specific considerations on the USB-3 bus connection
and the host system for optimal operation. To ensure the best performance, please observe the recommenda-
tions outlined below.
Section Aspect Recommendation
§3.2
USB-3 port
Use a ‘true’ USB-3 port, as operation via a USB-2 port is not supported.
§3.3
USB-3 cable
Use a reliable USB-3 cable.
The DTU-331 box includes cables suitable for different ports (USB-C or USB-A).
§3.4
Host Controller
Connect via an integrated USB-3 host controller. Avoid using USB-3 add-on
cards.
§3.5
Host CPU
A modern Core i7 CPU (or AMD equivalent) is recommended he DTU-331 pack-
age includes cables suitable for different ports (USB-C or USB-A).
§3.6
Operating System
Windows 10 or 11 is recommended. Linux and macOS are not supported.
USB-3 Port
To ensure proper operation of the DTU-331, your host system must have one or more available USB-3 ports. It
is important to note that the DTU-331 cannot be operated via a USB-2 port due to its high-speed requirements.
USB-3 Cable
The DTU-331 is equipped with a USB type-C connector. The DTU-331 comes with different USB-3 cables to
accommodate various types of host ports. The box includes:
Cable Remarks
50cm USB-3 type-C to type-C cable
Laptops and PCs with USB-C ports.
100cm USB-3 type-C to type-C cable
100cm USB-3 type-A to type-C cable
Laptops and PCs with USB-A ports only.
Please use these supplied cables, or a high-quality USB-3 cable, for proper connectivity.
Note:
• The DTU-331 does not require USB Power Delivery (USB-PD) or Thunderbolt for correct operation.
DTU-331 Datasheet
0-3GHz RF Probe for USB-3
8
USB-3 Host Controller
The USB-3 host controller manages the data transfers between your host system (PC) and the DTU-331. For
optimal compatibility, it is recommended to connect the DTU-331 to an integrated USB-3 host controller. Most
laptops already have an integrated host controller, ensuring proper functionality. However, when using a desk-
top PC, it is advisable to avoid USB-3 add-on cards.
The following USB-3 host controllers have been successfully tested with the DTU-331:
USB-3 Host Controller Remarks
Etron USB-3 Extensible Host Controller
Used on motherboards.
Intel USB-3 eXtensible Host Controller
Used on motherboards.
AS Media eXtensible Host Controller
Used on motherboards.
Renesas/NEC D720200
Used on motherboards.
Renesas/NEC D720202
Used on PC add-on cards with 2 external USB-3 ports.
Please note that the following USB-3 host controllers are not supported by the DTU-331:
USB-3 Host Controller Remarks
AS Media ASM1022
Used on PC add-on cards with 2 external USB-3 ports.
AS Media ASM1042 1144A/1144B
Used on PC add-on cards with 4/2 external USB-3 ports.
Texas Instruments TUSB7340
Used on PC add-on cards with 4 external USB-3 ports.
VIA/VLI VL810/VL811
Used on PC add-on cards with 4/5 external USB-3 ports.
Host CPU
To utilize the DTU-331 at its full capacity, your host system should have sufficient computing power. The mini-
mum requirements for the host CPU depend on the modulation type used:
Modulation Type Required Minimum CPU
DVB-S at 27.5MBd
Core i7-4xxx or better (or AMD equivalent) with processor base
frequency ≥2.8GHz.
Other modulation types
Core i7-4xxx or better (or AMD equivalent); no requirement on
processor base frequency.
Operating System
The DTU-331 is supported by the following operating systems:
Operating System Remarks
Windows 10 and 11 (64 bits)
These operating systems natively support USB 3. Please do not
install the driver supplied with the USB-3 host controller.
Other Windows versions (older, server),
Linux, macOS
Not supported.
DTU-331 Datasheet
0-3GHz RF Probe for USB-3
9
Resolving USB-Related Issues
Occasionally, the proper functioning of the DTU-331 may be hindered due to the USB connection operating in
USB-2 instead of the required USB-3 mode. You can confirm the operating mode by employing the DtInfo tool,
which will display the USB version in its graphical user interface (GUI).
In USB-2 mode, DtInfo will still detect the DTU-331, as it can read the Volatile Programmable Data (VPD) under
this mode. However, in this mode, the DTU-331 is incapable of transmitting a data stream to the host.
If your DTU-331 operates in USB-2 mode, you can try to fully disconnect the USB-3 connector from both ends
of the cable, then reconnect.
Should the problem persist, it may be due to the quality of the USB cable. Ensure that you are using a high-
quality and preferably short USB-3 cable. If the DTU-331 continues to start up in USB-2 mode, it might point
towards a compatibility issue, please refer to the preceding sections in this manual.
DTU-331 Datasheet
0-3GHz RF Probe for USB-3
10
4. Overview of DTU-331 Operation
System Diagram
The DTU-331 is a versatile I/Q receiver, designed with two distinct receive paths, each catering to different
bandwidth requirements. The first is an 8MHz path, optimized for receiving cable and terrestrial Digital TV (DTV)
standards, accommodating a maximum bandwidth of 8MHz. The second is a 60MHz path, specifically tuned
for satellite standards, capable of handling a maximum bandwidth of 60MHz. Users can select the appropriate
path according to their specific reception needs.
8MHz Receiver
60MHz Receiver
RF In
DTU-331
USB-3
bus
SDR
Software
Demod
demodulated
strea m
measure
ments
User
App
PC
42..32 20MHz
950..3220MHz
Figure 3. System diagram.
As depicted in Figure 2Figure 3, the received samples are transferred to the host through a high-speed USB-3
bus. The demodulation process is predominantly software-based, leveraging Software Defined Radio (SDR) tech-
niques. This processing is executed within the framework of DekTec's supporting library, DTAPI.
The user application, in turn, receives the demodulated stream and measurements from DTAPI, enabling users
to manipulate and analyze the data as required.
DTU-331 Datasheet
0-3GHz RF Probe for USB-3
11
5. Specifications
Ports
The DTU-331 features the following connections.
Port
Connector
Impedance
Description
1
Micro-BNC female
75Ω
RF input.
USB
USB Type-C (USB-C) female
-
USB 3.2 Gen 1 connection.
Note
• The USB Type-C connector on the DTU-331 is a female port, providing a USB 3.2 Gen 1 interface (5 Gbps) for
connecting to a laptop or PC. The USB-C cable connector is reversible, allowing for easy insertion in either ori-
entation.
RF Input
The characteristics of the input and demodulation characteristics are specified in the table below.
Parameter Qualification Min Typ Max Unit
RF INPUT
Connector type
Micro-BNC, female
Impedance
75
Ω
RETURN LOSS
Not powered
Not specified
dB
If 8MHz tuner is used
0 - 1GHz
-5
(optimized for sensitivity)
dB
1 - 3GHz
-5
-15
dBm
If 60MHz tuner is used
1 - 2GHz
-9
dBm
2 - 3GHz
-5
-12
dBm
LEVEL
Total input power
Band filled with channels
-9
dBm
Sensitivity
Typical
-80
-20
dBm
Required channel level
Typical for Terrestrial using
a robust mode
-80
-20
dBm
Terrestrial, worst case
-75
dBm
Cable, worst case
-70
dBm
Satellite, worst case
-65
dBm
RF Fequency
8MHz tuner
42
3220
MHz
60MHz tuner
925
3220
MHz
Initial accuracy
25°C
-0.5
+0.5
ppm
Aging in first year
1
ppm
Stability
0 to 45°C ambient
-0.5
+0.5
ppm
DTU-331 Datasheet
0-3GHz RF Probe for USB-3
12
Reception and Demodulation
The following table provides an overview of the reception and demodulation characteristics for both the 8MHz
and 60MHz tuners of the DTU-331 RF Probe, specifying their respective minimum, typical, and maximum pa-
rameter values where applicable.
Parameter Qualification Min Typ Max Unit
8MHZ TUNER
Bandwidth
0.85, 1.7, 5, 6, 7, 8
MHz
Sample rate
1
40
Msps
ADC bit depth
16
bits
I/Q samples bit depth
16-bit I + 16-bit Q
bits
MER
DVB-T2, 8MHz
45
dB
I/Q constellation
42 - 1002MHz
Up to 64k QAM
1002 - 3220MHz
Up to 1k QAM
60MHZ TUNER
Bandwidth
9, 10, 11, …, 58, 59, 60
MHz
Sample rate
5
80
Msps
ADC bit depth
12
bits
I/Q samples bit depth
5 - 50Msps
16-bit I + 16-bit Q
bits
50 - 66Msps
12-bit I + 12-bit Q
bits
66 - 80Msps
10-bit I + 10-bit Q
bits
MER
DVB-S, 27.5MBd
35
dB
I/Q constellation
925 - 2,200MHz
Up to 256-APSK
2,200 - 3220MHz
Up to 32-APSK
DTU-331 Datasheet
0-3GHz RF Probe for USB-3
13
Measurements
The table below outlines the range and accuracy of measurements that can be conducted with the 8MHz and
60MHz tuners of the DTU-331 RF Probe: power level and Modulation Error Ratio (MER).
Parameter Qualification Min Typ Max Unit
8MHZ TUNER
Power level range
42 - 2,300MHz
-20 to -80
dBm
2,300 - 3220MHz
-20 to -70
dBm
Power level accuracy
42 - 2,300MHz
±1.0
±2.0
dBm
2,300 - 3220MHz
±1.0
±3.0
dBm
MER range
10 to 45
dB
MER accuracy
±0.5
±2.0
dB
60MHZ TUNER
Power level range
925 - 2,200MHz
-20 to -80
dBm
2,200 - 3220MHz
-20 to -70
dBm
Power level accuracy
925 - 2,200MHz
±1.0
±2.0
dBm
2,200 - 3220MHz,
-20 to -50dBm
±1.0 ±3.0 dBm
2,200 - 3220MHz,
-50 to -70dBm
±1.0 ±5.0 dBm
MER range
10 to 45
dB
MER accuracy
±0.5
±2.0
dB
DTU-331 Datasheet
0-3GHz RF Probe for USB-3
14
Miscellaneous Specifications
The table below presents miscellaneous specifications for the DTU-331 RF Probe for USB-3, delineating key
attributes related to its USB connection, power parameters, mechanical dimensions, and environmental operat-
ing conditions.
Parameter Qualification Min Typ Max Unit
USB
Connector type
USB Type-C (USB-C) female
Generation
USB 3.2 Gen 1
Link speed
5
Gbit/s
POWER
Voltage
At USB-C connector
4.5
5
5.25
W
Power consumption
Overall range
0.5
6.5
W
Device is idle
0.5
W
8MHz, 42 - 1.002MHz
4.75
4.9
W
8MHz, 1002 – 3220MHz
5.3
5.5
W
60MHz, 925 – 2,200MHz
5.4
5.5
W
60MHz, 2,200 – 3220MHz
6.1
6.5
W
MECHANICAL
Dimensions
W x H x D
154 x 30 x 30
mm
Weight
144
g
ENVIRONMENTAL
Operating temperature
0
+40
°C
Compliancy
The table below lists the key EMC, ESD immunity, and safety standards with which the DTU-331 RF Probe com-
plies.
Parameter Qualification Min Typ Max Unit
COMPLIANCY
EMC Emission
EN 55022
FCC CFR 47 Part 15 Class A
EMC Immunity
EN 55024
EN 61000-4-3/4/5/6/8
ESD Immunity
8kV (EN 61000-4-2)
Safety
IEC 60065
UL1419
DTU-331 Datasheet
0-3GHz RF Probe for USB-3
15
6. Modulation Standards
This section provides features, specifications and software support per modulation standard.
ATSC 1.0
Parameter / Feature Value / Comment
STANDARD
ATSC A/53E, nowadays also known as ATSC 1.0
DEMODULATION
Modulation type
8-VSB
Symbol rate
10.762MBd
FEATURES
Output format
MPEG-2 Transport Stream
Measurements
(using DTAPI)
Level, MER, pre-RS BER, packet errors, Reed-Solomon statistics.
Advanced RF measurements
(using DTAPI with -XPRT option)
Constellation diagram, spectrum.
SOFTWARE SUPPORT
StreamXpert
Analyzes ATSC 1.0 transport streams; shows signal level and MER.
DTAPI
DTAPI is a C++ API for custom application development with DekTec de-
vices.
Provides access to all measurements listed above as well as a direct interface to
the demodulated Transport Stream.
DTU-331 Datasheet
0-3GHz RF Probe for USB-3
16
ATSC 3.0
Parameter / Feature Value / Comment
STANDARD
ATSC 3.0
DEMODULATION
Bandwidth
6, 7, 8MHz
Modulation type
QPSK, 16, 32, 64, 128, 256, 1024, 4096-QAM
FFT
8K, 16K, 32K
Multi PLP
Up to 64 PLPs
PLP multiplexing
LDM, FDM, TDM, TFDM
FEATURES
Output format
ALP packets
BB frames
IP, as offline capture file or live IP output
Measurements
(using DTAPI)
All ATSC 3.0 modulation parameters.
Level, MER, pre-LDPC BER, pre-BCH BER, LDPC statistics, frame errors, bootstrap
info, Layer1 signaling info, Tx ID info.
Advanced RF measurements
(using DTAPI with -XPRT option)
Constellation diagram, spectrum, impulse response (echoes), transfer function.
SOFTWARE SUPPORT
Atsc3Xpert
DekTec's specialized ATSC 3.0 RF analysis software for Windows.
It is designed to effectively interpret and visualize RF signal data through detailed
visualizations of constellation diagram, transfer function, impulse response and
LDPC statistics, along with L1 signaling information, subframe- and PLP parame-
ters, all in an intuitive GUI.
Additionally, Atsc3Xpert features recording of PLP data in PCAP files and supports
real-time ALP and ROUTE/MMT output over IP. The decoded stream can be auto-
matically forwarded to StreamXpert for decoding and visualization of the upper
AV layers and metadata.
StreamXpert
DekTec’s stream analyzer software for Windows.
For ATSC 3.0 streams, StreamXpert features metadata analysis and audio/video
decoding of ATSC 3.0 streams.
DTAPI
DTAPI is a C++ API for custom application development with DekTec devices.
Provides access to all measurements listed above as well as an interface to the IP
packets decoded from the ATSC 3.0 stream.
DTU-331 Datasheet
0-3GHz RF Probe for USB-3
17
DAB/DAB+/T-DMB
Parameter / Feature Value / Comment
STANDARD
EN 300 401, TS 102 563, TS 102 427
DEMODULATION
Modes
I, II, III, IV
FEATURES
Output format
ETI(NI) stream according to EN 300 799
Raw DAB data
AAC audio
MPEG-2 Transport Stream (T-DMB)
Measurements
(using DTAPI)
Level, MER, pre-Viterbi/pre-RS BER, packet errors.
Viterbi statistics, Reed-Solomon statistics, ensemble info, Tx ID info.
Advanced RF measurements
(using DTAPI with -XPRT option)
Constellation diagram, spectrum, impulse response (echoes), transfer function.
SOFTWARE SUPPORT
StreamXpert
Decodes DAB(+) streams.
SDK (DTAPI)
Enables custom application development for processing of DAB(+) or T-DMB
streams (analysis, monitoring, and more).
DVB-C2
Value / Comment
STANDARD
EN 302 769
DEMODULATION
Bandwidth
6MHz, 8MHz
Modulation type
16, 32, 64, 128, 256, 1024, 4096-QAM
Multi PLP
Up to 256 PLPs
FEATURES
Output format
MPEG-2 Transport Stream
GSE packets
MPEG-2 Transport Stream
Measurements
(using DTAPI)
All DVB-C2.0 modulation parameters.
Level, MER, pre-LDPC BER, pre-BCH BER, LDPC statistics, packet errors.
Advanced RF measurements
(using DTAPI with -XPRT option)
Constellation diagram, spectrum, impulse response (echoes), transfer function.
SOFTWARE SUPPORT
C2Xpert
DekTec’s dedicated DVB-C2 RF analyzer for Windows.
C2Xpert receives and analyzes DVB-C2 RF streams and presents both basic and
advanced RF measurements in a GUI. Additionally, it displays all DVB-C2 modu-
lation parameters.
StreamXpert
DekTec’s stream analyzer software for Windows.
For DVB-C2 signals, StreamXpert shows input RF level and MER in the GUI, and it
decodes audio, video, PSI and SI data in the Transport Stream.
DTAPI
DTAPI is a C++ API for custom application development with DekTec devices.
Provides access to all measurements listed above as well as a direct interface to
the demodulated Transport Stream.
DTU-331 Datasheet
0-3GHz RF Probe for USB-3
18
DVB-CID
Parameter / Feature Value / Comment
STANDARD
ETSI TS 103 129 v1.1.2
DEMODULATION
Modulation type
BPSK
FEATURES
Output format
CID frame data
Measurements
(using DTAPI)
Level, SNR
SOFTWARE SUPPORT
StreamXpert
DekTec’s stream analyzer software for Windows.
For DVB-CID, StreamXpert has a dedicated window tab specifically designed for
showing the CID decoding status, and offering a comprehensive view of the de-
coded DVB-CID data.
SDK (DTAPI)
DTAPI is DekTec’s C++ API for custom application development.
The SDK contains a number of classes specifically designed for demodulating
and decoding CID.
DVB-S
Parameter / Feature Value / Comment
STANDARD
EN 300 421
DEMODULATION
Modulation type
QPSK
Symbol rate
1 to 40MBd
FEATURES
Output format
MPEG-2 Transport Stream
Measurements
(using DTAPI)
Level, MER, pre-Viterbi/pre-RS BER, packet errors.
Viterbi statistics, Reed-Solomon statistics.
Advanced RF measurements
(using DTAPI with -XPRT option)
Constellation diagram, spectrum, impulse response (echoes), transfer function.
SOFTWARE SUPPORT
StreamXpert
DekTec’s stream analyzer software for Windows.
For DVB-S signals, StreamXpert shows RF level and MER in the GUI, and it de-
codes audio, video, PSI and SI data in the Transport Stream.
DTAPI
DTAPI is a C++ API for custom application development with DekTec devices.
Provides access to all measurements listed above as well as a direct interface to
the demodulated Transport Stream.
DTU-331 Datasheet
0-3GHz RF Probe for USB-3
19
DVB-T
Parameter / Feature Value / Comment
STANDARD
EN 300 744
DEMODULATION
Bandwidth
5, 6, 7, 8MHz
Modulation type
QPSK, 16-QAM, 64-QAM
FEATURES
Output format
MPEG-2 Transport Stream
Measurements
(using DTAPI)
Level, MER, pre-Viterbi/pre-RS BER, packet errors.
Viterbi statistics, Reed-Solomon statistics, TPS info.
Advanced RF measurements
(using DTAPI with -XPRT option)
Constellation diagram, spectrum, impulse response (echoes), transfer function.
SOFTWARE SUPPORT
StreamXpert
DekTec’s stream analyzer software for Windows.
For DVB-T signals, StreamXpert shows input RF level and MER in the GUI, and it
decodes audio, video, PSI and SI data in the Transport Stream.
DTAPI
DTAPI is a C++ API for custom application development with DekTec devices.
Provides access to all measurements listed above as well as a direct interface to
the demodulated Transport Stream.
DVB-T2
Parameter / Feature Value / Comment
STANDARD
EN 302 755 v1.1.1, v1.2.1, v1.3.1
DEMODULATION
Bandwidth
1.7, 5, 6, 7, 8MHz
Modulation type
QPSK, 16-QAM, 64-QAM
Profile
Base, Lite
Multi PLP
Up to 256 PLPs
FEATURES
Output format
MPEG-2 Transport Stream
T2-MI
GSE packets
BB frames
Measurements
(using DTAPI)
Level, MER, pre-LDPC/pre-BCH BER, LDPC statistics, packet errors.
Recovers all modulation parameters.
Advanced RF measurements
(using DTAPI with -XPRT option)
Constellation diagram, spectrum, impulse response (echoes), transfer function,
MER per subcarrier.
SOFTWARE SUPPORT
T2Xpert
DekTec's specialized DVB-T2 RF analysis software for Windows.
It is designed to effectively interpret and visualize RF signal data through detailed
visualizations of constellation diagram, transfer function, MER per subcarrier, im-
pulse response and LDPC statistics, along with T2 signaling information, PLP pa-
rameters and more, all in an intuitive GUI.
StreamXpert
DekTec’s stream analyzer software for Windows.
For DVB-T2 signals, StreamXpert shows input RF level and MER in the GUI, and it
decodes audio, video, PSI and SI data in the Transport Stream.
DTAPI
DTAPI is a C++ API for custom application development with DekTec devices.
Provides access to all measurements listed above as well as a direct interface to
the demodulated Transport Stream.
DTU-331 Datasheet
0-3GHz RF Probe for USB-3
20
I/Q Samples
Parameter / Feature Value / Comment
STANDARD
DekTec proprietary
DEMODULATION
Sample rate
1 to 80Msps
Modulation type
QPSK, 16-QAM, 64-QAM
Profile
Base, Lite
Bandwidth
0.85, 1.7, 5, 6, 7, 8
9 to 60MHz in 1MHz steps.
FEATURES
Output format
I/Q samples as pairs of 16-bit signed integers in I, Q order.
Measurements
Level
SOFTWARE SUPPORT
DtRecord
Command line tool for recording streams, compatible with Windows and Linux.
Can be used for recording I/Q sample files.
StreamXpert
No support for I/Q samples.
DTAPI
DTAPI is a C++ API for custom application development with DekTec devices.
Provides access to all measurements listed above as well as a direct interface to
the demodulated Transport Stream.
ISDB-T / ISDB-T
SB
Parameter / Feature Value / Comment
STANDARD
ARIB STD-B31, ARIB STD-B29
DEMODULATION
Bandwidth
6, 8MHz
Number of segments
ISDB-T: 13
ISDB-T
SB
: 1, 3
FEATURES
Output format
MPEG-2 Transport Stream
MPEG-2 Transport Stream + TMCC
Measurements
(using DTAPI)
Level, MER, pre-Viterbi/pre-RS BER, packet errors, Reed-Solomon statistics.
Recovers all modulation parameters per layer.
Advanced RF measurements
(using DTAPI with -XPRT option)
Constellation diagram, spectrum, impulse response (echoes), transfer function.
SOFTWARE SUPPORT
StreamXpert
DekTec’s stream analyzer software for Windows.
DTAPI
DTAPI is a C++ API for custom application development with DekTec devices.
Provides access to all measurements listed above as well as a direct interface to
the demodulated Transport Stream.
DTU-331 Datasheet
0-3GHz RF Probe for USB-3
21
QAM-A (DVB-C)
Parameter / Feature Value / Comment
STANDARD
ITU-T J.83 Annex A, EN 300 429
DEMODULATION
Bandwidth
8MHz
Modulation
16, 32, 64, 128, 256-QAM
Symbol rate
1 to 7MBd
FEATURES
Output format
MPEG-2 Transport Stream
Measurements
(using DTAPI)
Level, MER, pre-Viterbi/pre-RS BER, packet errors, Reed-Solomon statistics.
Recovers all modulation parameters per layer.
Advanced RF measurements
(using DTAPI with -XPRT option)
Constellation diagram, spectrum.
SOFTWARE SUPPORT
StreamXpert
DekTec’s stream analyzer software for Windows.
For DVB-C signals, StreamXpert shows RF level and MER in the GUI, and it de-
codes audio, video, PSI and SI data in the Transport Stream.
DTAPI
DTAPI is a C++ API for custom application development with DekTec devices.
Provides access to all measurements listed above as well as a direct interface to
the demodulated Transport Stream.
QAM-B
Parameter / Feature Value / Comment
STANDARD
ITU-T J.83 Annex B
DEMODULATION
Bandwidth
6MHz
Modulation
64, 256-QAM
Symbol rate
5.057, 5.361MBd
Interleaving
All ITU-T J.83.B defined interleaving modes
FEATURES
Output format
MPEG-2 Transport Stream
Measurements
(using DTAPI)
Level, MER, pre-RS BER, packet errors, Reed-Solomon statistics.
Recovers all modulation parameters per layer.
Advanced RF measurements
(using DTAPI with -XPRT option)
Constellation diagram, spectrum.
SOFTWARE SUPPORT
StreamXpert
DekTec’s stream analyzer software for Windows.
For QAM-B signals, StreamXpert shows RF level and MER in the GUI, and it de-
codes audio, video, PSI and SI data in the Transport Stream.
DTAPI
DTAPI is a C++ API for custom application development with DekTec devices.
Provides access to all measurements listed above as well as a direct interface to
the demodulated Transport Stream.
DTU-331 Datasheet
0-3GHz RF Probe for USB-3
22
QAM-C (ISDB-C)
Parameter / Feature Value / Comment
STANDARD
ITU-T J.83 Annex C
DEMODULATION
Bandwidth
6MHz
Modulation
16, 32, 64, 128, 256-QAM
Symbol rate
5.274MBd
FEATURES
Output format
MPEG-2 Transport Stream
Measurements
(using DTAPI)
Level, MER, pre-RS BER, packet errors, Reed-Solomon statistics.
Recovers all modulation parameters per layer.
Advanced RF measurements
(using DTAPI with -XPRT option)
Constellation diagram, spectrum.
SOFTWARE SUPPORT
StreamXpert
DekTec’s stream analyzer software for Windows.
For QAM-B signals, StreamXpert shows RF level and MER in the GUI, and it de-
codes audio, video, PSI and SI data in the Transport Stream.
DTAPI
DTAPI is a C++ API for custom application development with DekTec devices.
Provides access to all measurements listed above as well as a direct interface to
the demodulated Transport Stream.