Model: DVU 5000
Features
· 50 MHz to 1GHz RF Output
· RF Output Power Level -10 dBm to 0 dBm
· Full hierarchical mode support
· SFN and MFN support
· Linear and non-linear pre-correction
· Superior MER performance
· Web GUI, SNMP and Telnet remote control and software upgrade
Optional Features
· Internal GPS Receiver
· Internal Power Amplifier with 0 dBm to +10 dBm output
· Adaptive Pre-correction
Overview
Designed to meet the most demanding requirements of today’s Digital Terrestrial Television Broadcast Market, the DVU 5000 from UBS is ranked number one in its class. A key factor in the product’s success is the quality of its coding and modulation process.
Application
The performance and flexibility of the DVU 5000 allows it to excel in any application related to DVB-SH modulation. The core function of the DVU 5000 is to modulate a MPEG-2 transport stream (input) onto a DVB-SH compliant OFDM spectrum (output) in accordance with the rules for channel coding and modulation specified in the ETSI DVB-SH standards.
Inputs
The DVU 5000 is provided with two serial DVB-ASI inputs that accept a MPEG-2 TS. The DVB-ASI inputs can be automatically selected, or assigned by the user. The automatic switching provides near seamless switching to a secondary transport stream in case the primary transport stream source fails (a truly valuable feature for broadcast applications).
RF Output
The RF output is generated by a high performance RF converter, which covers the entire frequency range from 50 MHz to 1 GHz in steps of just 1 Hz. The output level is adjustable from -10 to 0 dBm (optionally from 0 to +10 dBm) in 0.1 dB steps. The user can set the polarity of the spectrum to Inverted or Non-inverted as required.
IF Output
Based on the selected waveform, the DVU 5000 provides an output channel on a user defined frequency between 35 MHz and 46 MHz (Optional fixed IF frequency from 5 MHz to 80 MHz). Inverted/non-inverted spectrum is selected through the control interface. The IF Output can be directly interfaced to a wide range of transmitters and frequency converters.
SFN Mode
This mode provides the DVU 5000 with market leading SFN performance, with respect to basic timing accuracy and extent of the local delay offset range. The user can select either the SFN or MFN mode via the control interfaces. The primary reference clock is the external 10 MHz signal, which is applied to the 10 MHz input from a GPS. If the external 10 MHz signal is missing, the system will operate synchronized to its internal 10 MHz oscillator.
Web Interface
This feature allows remote control of the DVU 5000 via Ethernet (TCP/IP). The system is based on a Web server mounted inside the DVU 5000. The Web pages stored on the Web server are designed as a complete graphical user interface (GUI) for testing the status and setting the parameters of the modulator. The Web Interface concept is popular because remote control with this system only requires a standard PC with a network interface card (NIC) and a Web browser (Microsoft Explorer 6.0+).
SNMP Client
This feature allows remote control of the DVU 5000 in accordance with the SNMP protocol (Get, Set and SNMP traps). This remote control feature is intended for systems solutions where it is desired to integrate the control of a range of SNMP compliant equipment in a common management system.
Digital Linear and Non-linear Pre-corrector
This is recommended in order to maximize the performance of the transmitter in which the modulator is installed.
• The Non-linear Pre-corrector balances out gain and phase non-linearity in the transmitter RF power amplifier,
thereby significantly reducing the in-band and out of band intermodulation products. Optimizing the transmitter’s
performance will extend the coverage area. The performance requirement of the transmitter output filter, which is
used to suppress radiation in adjacent channels below a maximum allowed level, will also be eased.
• The Linear Pre-corrector balances out level and group delay variations that are seen across the channel bandwidth
and are caused by the transmitter mask filter and/or channel combiner filters. The linear optimization of the
transmitter’s radiated signal allows the ISDBT receiver’s channel equalizer to focus all of its correction capacity on
level and group delay errors originating from the actual transmission path.
The characteristics of the linear and non-linear pre-correction curves are set by means of an easy to use and highly intuitive graphical user interface, the UBS Corrector GUI software package (Windows compatible).
Features
· 50 MHz to 1GHz RF Output
· RF Output Power Level -10 dBm to 0 dBm
· Full hierarchical mode support
· SFN and MFN support
· Linear and non-linear pre-correction
· Superior MER performance
· Web GUI, SNMP and Telnet remote control and software upgrade
Optional Features
· Internal GPS Receiver
· Internal Power Amplifier with 0 dBm to +10 dBm output
· Adaptive Pre-correction
Overview
Designed to meet the most demanding requirements of today’s Digital Terrestrial Television Broadcast Market, the DVU 5000 from UBS is ranked number one in its class. A key factor in the product’s success is the quality of its coding and modulation process.
Application
The performance and flexibility of the DVU 5000 allows it to excel in any application related to DVB-SH modulation. The core function of the DVU 5000 is to modulate a MPEG-2 transport stream (input) onto a DVB-SH compliant OFDM spectrum (output) in accordance with the rules for channel coding and modulation specified in the ETSI DVB-SH standards.
Inputs
The DVU 5000 is provided with two serial DVB-ASI inputs that accept a MPEG-2 TS. The DVB-ASI inputs can be automatically selected, or assigned by the user. The automatic switching provides near seamless switching to a secondary transport stream in case the primary transport stream source fails (a truly valuable feature for broadcast applications).
RF Output
The RF output is generated by a high performance RF converter, which covers the entire frequency range from 50 MHz to 1 GHz in steps of just 1 Hz. The output level is adjustable from -10 to 0 dBm (optionally from 0 to +10 dBm) in 0.1 dB steps. The user can set the polarity of the spectrum to Inverted or Non-inverted as required.
IF Output
Based on the selected waveform, the DVU 5000 provides an output channel on a user defined frequency between 35 MHz and 46 MHz (Optional fixed IF frequency from 5 MHz to 80 MHz). Inverted/non-inverted spectrum is selected through the control interface. The IF Output can be directly interfaced to a wide range of transmitters and frequency converters.
SFN Mode
This mode provides the DVU 5000 with market leading SFN performance, with respect to basic timing accuracy and extent of the local delay offset range. The user can select either the SFN or MFN mode via the control interfaces. The primary reference clock is the external 10 MHz signal, which is applied to the 10 MHz input from a GPS. If the external 10 MHz signal is missing, the system will operate synchronized to its internal 10 MHz oscillator.
Web Interface
This feature allows remote control of the DVU 5000 via Ethernet (TCP/IP). The system is based on a Web server mounted inside the DVU 5000. The Web pages stored on the Web server are designed as a complete graphical user interface (GUI) for testing the status and setting the parameters of the modulator. The Web Interface concept is popular because remote control with this system only requires a standard PC with a network interface card (NIC) and a Web browser (Microsoft Explorer 6.0+).
SNMP Client
This feature allows remote control of the DVU 5000 in accordance with the SNMP protocol (Get, Set and SNMP traps). This remote control feature is intended for systems solutions where it is desired to integrate the control of a range of SNMP compliant equipment in a common management system.
Digital Linear and Non-linear Pre-corrector
This is recommended in order to maximize the performance of the transmitter in which the modulator is installed.
• The Non-linear Pre-corrector balances out gain and phase non-linearity in the transmitter RF power amplifier,
thereby significantly reducing the in-band and out of band intermodulation products. Optimizing the transmitter’s
performance will extend the coverage area. The performance requirement of the transmitter output filter, which is
used to suppress radiation in adjacent channels below a maximum allowed level, will also be eased.
• The Linear Pre-corrector balances out level and group delay variations that are seen across the channel bandwidth
and are caused by the transmitter mask filter and/or channel combiner filters. The linear optimization of the
transmitter’s radiated signal allows the ISDBT receiver’s channel equalizer to focus all of its correction capacity on
level and group delay errors originating from the actual transmission path.
The characteristics of the linear and non-linear pre-correction curves are set by means of an easy to use and highly intuitive graphical user interface, the UBS Corrector GUI software package (Windows compatible).
DVB-SH Modulator
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