Hauppauge DEC2540-T USB: Difference between revisions
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A [[DVB-T]] USB 1.1 device |
A [[DVB-T]] [[DVB-T USB Devices|USB 1.1 device]] manufactured by [[TechnoTrend]] and resold by [[Hauppauge]]. |
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It is supported under Linux. |
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Card can only deliver a partial/modified TS stream to userspace |
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card driver: ttusb-dec |
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interface: USB 1.1 |
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Notes: These cards have the frontend hidden behind a USB interface |
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The DEC is a set-top boxes equipped with a USB port and can be used without a PC. The TV-Out can't be used for PC output. |
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The DEC2540-T is a digital receiver set-top box that it is equipped with an USB port, allowing it to be used either as a PC peripheral or as a standalone [[STB]] (i.e. used without a PC). It is similar to the [[Hauppauge DEC2000-T USB|DEC2000-T]] but comes equipped with a Conax(?) decrypt card slot. Decryption is not supported under GNU/Linux. The device is only sold in the Netherlands. |
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One can watch digital TV with this device using xine, or alternatively record the incoming stream via cat'ting /dev/dvb. The device's TV-Out can't be used for PC output. |
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The device can only deliver a partial/modified TS stream to userspace: due to the limited [[Bus Bandwidth|bus bandwidth]] provided by [[Universal Serial Bus|USB 1.1]], of approximately 12Mbps, only selected [[PID]]s can be transferred over USB to the host system. Consequently, some high bandwidth [[Transponder|transponders]] won't work, and [[HDTV]] reception is not possible. |
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''[ Q. Does it use a Texas Instruments [[DSP]] that remultiplexes the stream into a [[TechnoTrend]]-proprietary USB packet format and sends it as [[Isochronous USB Stream]] over the bus ? (as in the case of the [[Hauppauge WinTV-NOVA-T USB]]) ?? Sounds like it does. ]'' |
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===Components Used=== |
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* frontend |
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* usb interface (Texas Instruments ?) |
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===Identification=== |
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==Making it work== |
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===Drivers=== |
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The device's internal components are hidden behind the USB interface. |
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The following drivers are needed for this device: |
The following drivers are needed for this device: |
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- ttusb_dec.ko |
- ttusb_dec.ko |
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==Also See== |
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{{DvbDeviceList |
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| content= |
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{{ DvbDeviceCommented |
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| device=[[Hauppauge]] [[Hauppauge DEC2540-T USB|DEC2540-T USB]] (DVB-T) |
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| type=USB1.1 |
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| comment=Similar to DEC2000-T but with Conax(?) decrypt card slot. Decryption is not supported under GNU/Linux. Only sold in the Netherlands. |
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}} |
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}} |
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Links referring to the [[Hauppauge]] DEC2540-T USB: |
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==External Links== |
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Watching TV with this device works ( using xine, recording via cat'ting /dev/dvb... works, but most existing tv applications do not work, because it does not have V4L interface. |
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* Hauppauge product page |
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[[Category:DVB-T]] |
[[Category:DVB-T]] |
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Revision as of 02:00, 15 November 2008
A DVB-T USB 1.1 device manufactured by TechnoTrend and resold by Hauppauge.
It is supported under Linux.
Overview/Features
The DEC2540-T is a digital receiver set-top box that it is equipped with an USB port, allowing it to be used either as a PC peripheral or as a standalone STB (i.e. used without a PC). It is similar to the DEC2000-T but comes equipped with a Conax(?) decrypt card slot. Decryption is not supported under GNU/Linux. The device is only sold in the Netherlands.
One can watch digital TV with this device using xine, or alternatively record the incoming stream via cat'ting /dev/dvb. The device's TV-Out can't be used for PC output.
The device can only deliver a partial/modified TS stream to userspace: due to the limited bus bandwidth provided by USB 1.1, of approximately 12Mbps, only selected PIDs can be transferred over USB to the host system. Consequently, some high bandwidth transponders won't work, and HDTV reception is not possible.
[ Q. Does it use a Texas Instruments DSP that remultiplexes the stream into a TechnoTrend-proprietary USB packet format and sends it as Isochronous USB Stream over the bus ? (as in the case of the Hauppauge WinTV-NOVA-T USB) ?? Sounds like it does. ]
Components Used
DEC-specific
- frontend
- has an onboard hardware video+audio decoder
- usb interface (Texas Instruments ?)
Identification
USB device id: 0b48:1009
Making it work
Drivers
The device's internal components are hidden behind the USB interface.
The following drivers are needed for this device:
- ttusbdecfe.ko - ttusb_dec.ko
Also See
- Hauppauge DEC2000-T USB, a similar model
External Links
- Hauppauge product page
- A users report