AT3780USB with on board CF Card
iModulate

DVB-T/H/C(QAM-A/B/C), ATSC & ISDB-T

Includes ReMux Function

VHF&UHF Up-converter with IF & RF outputs

DVB-ASI/SPI inputs & Output

Modulates TS files from USB, DVB-ASI input,
Flash Memory or an IP Source

Combined COFDM, QAM & ATSC Modulator with VHF & UHF Upconverter, supports DVB-T/H/C, QAM-A/B/C, ATSC-8-VSB and ISDB-T.
Re-Mux function to reduce bitrate for trans-modulation.
On board Compact Flash Memory to play Transport Streams without a need for an external source.
Stand alone operation. No PC needed. Modulation of TS files from On Board CF or External DVB-ASI source.
High Speed USB 2.0
Windows Drivers + SDK & Linux Drivers.
Accompanied by DVSStation4 Alitronika’s Application Software.
Supports DVB According to Standard A1010 Rev1 and EN50083.
Modulation of Transport Stream files from Harddisk.
Modulation of Transport Stream from the ASI input.
All modulation processes are carried out by the hardware so that there is no load on the PC processor,
So there is no need for an expensive high performance PC.
Supports Burst or continuous modes, 188 and 204 packet sizes.
Bitrates:
– DVB-T/H : 4.98 MB/s to 31.67 MB/s.
– DVB-C : 14 MB/s to 65 MB/s.
– ATSC : 10.76 MBaud to 19.30 MBaud.
– ISDB-T: 416 KB/s to 16.85/MB/s

Input

DVB-ASI input.

Output

RF Output.
IF ( I&Q ) Outputs.
DVB-ASI output for monitoring the modulated TS file.

Modes of operation

USB Mode

In this mode the AT3780USB operates just as a standard USB based device. The Modulation and IF/RF parameter can be set via the application software, DVSStation4. The Transport Streams could be entering the device via the USB interface or via an external DVB-ASI source.
The Re-Mux function could be used to Filter out unwanted PIDs to reduce the bitrate of the TS file or the Incoming DVB-ASI Transport Streams.

Stand alone Mode

In this mode the device no longer requires a PC for its operation. Any Transport Streams from the DVB-ASI input is modulated according to the parameters set by the user. The modulation, IF & RF parameters are stored on the internal memory of the AT3780USB. These parameters could be changed by the user at any time via the USB or RS232 interfaces.
If there are no incoming DVB-ASI streams, the device modulates from the TS files recorded on its ON BOARD COMPACT FLASH memory.
In this mode of operation, it is possible to have UNINTERRUPTED modulations of Transport Streams, having RF ( 50 to 850MHz ), IF ( both I&Q) & DVB-ASI outputs available at the SAME TIME, 24 Hours a day, 7 Days a week without a PC.

BLOCK DIAGRAM

CONNECTIONS

APPLICATIONS

Targeted for Digital Video Professionals, Sophisticated End Users and OEMs the AT3780USB is an ideal solution for a number of applications such as:

Development Tools for DVB-T/H/C Receiver R&D.
IP to DVB Gateway.
DVB-T/H/C, ATCS & ISDB-T Transport Stream Generation.
Stand alone RF signal generator for Test & Validation.
Demonstration and Trade Shows.
DVB-T/H/C, ATSC & ISDB-T output for OEM product.

SPECIFICATIONS

General Spec.

On Board Buffer:16 Mbytes.
IF Connectors:75 Ohms BNC.
IF Output Frequency:35-37 MHz or 69-71MHz adjustable in 1Hz steps.
Connector:75 Ohms BNC.
RF Output Frequency Range:50MHz to 1000MHz.
RF Output Power over bandwidth:+2dBm to -35dBm, adjustable in 0.5dB steps.

DVB-T/H Spec.

Channel Bandwidth: 5MHz, 6MHz, 7MHz, 8MHz.
COFDM Spectrum: 2k,4k and 8k carriers non-hierarchical.
Standards: COFDM according EN 300 744.
Modulation Modes: QPSK, 16QAM and 64QAM.
Guard Interval Modes: 1/32, 1/16, 1/8 and 1/4.
FEC Code Rates: 1/2, 2/3, 3/4,5/6, 7/8.
Spectral Inversion: Both inverted and non-inverted.

DVB-C Spec.

Channel Bandwidth: 6MHz, 8MHz.
Standards: QAM according EN 300 744.
Modulation Modes: 16QAM, 32QAM, 64QAM, 128QAM & 256QAM.

ATSC 8-VSB Spec.

Channel Bandwidth: 6MHz.
Standards: A/53 8-VSB.

ISDB-T Spec.

Channel Bandwidth: 6MHz.
Standards: ARIB STD-B31.

DVB-ASI Spec.

DVB-ASI Input/Output Connectors: 75 Ohms BNC.
DVB-ASI Output Signal level: 1.0Vp-p nominal.
DVB-ASI Output Clock: 270 MHz.
DVB-ASI Input return loss: 15dB.
DVB-ASI Output Bit Rate: 0 to 214Mbit/s ( up to Max. allowable bitrate for DVB-T/H/C, ATSC modulation).

APPLICATION SOFTWARE

DVSStation3/4/IP: Alitronika devices are supported by DVSStation3, DVSStation4 or DVSStationIP, Alitronika’s FREE Transport Stream Player, Recorder, Analyser and converter application software. Please refer to the specification and User Manual of these applications for more information. Even better please download them from our website and try them out. They works in DEMO mode without any Alitronika devices.