On Fri, 21 Aug 2020 09:19:35 +0100, you wrote:
>I'm building a replacement backend server and I'm looking to replace my
>Hauppauge Nova-TD-500 (DVB-T) with a Hauppauge WinTV-quadHD (DVB-T2).
>I'm a little confused.?? The Nova-TD-500 has two connectors and can
>record from 2 MUX's at once.? Can the WinTV-quadHD record from 4 MUX's
>at once with just a single connector?
>I'm UK based.
>
>Gavin
Technology has moved on since the TD-500s. They actually have two
aerial inputs but if you connect to the correct input (the lower one),
it is split and fed to both tuners (at half the signal level). If you
connect both aerial inputs, they have a "diversity" function, which
may only work with the Windows drivers as I have seen nothing about it
with the Linux drivers. On the TD-500 card there is a USB hub
connecting the two USB tuners to the PCI bus. They are fairly
standard Hauppauge USB DVB-T tuners.
We have two of these cards and just having upgraded my mother's MythTV
box to a new PCIe only motherboard, I have now got them in an external
PCIe to two slot PCI adapter out the back of her PC. If you want to
keep on using yours, you might consider doing the same. I am using
one of these adapters that I bought from a local auction site rather
than wait months for Aliexpress. They should be available in the UK
too:
https://www.aliexpress.com/item/32975912171.html I have put photos of my setup on my web server if you are interested:
http://www.jsw.gen.nz/mythtv/TD-500_20200821_211624.jpg http://www.jsw.gen.nz/mythtv/TD-500_20200821_211636.jpg I still need to get a longer power cable and USB cable to move them
around the side of the PC where they will be out of the way. Since
PCIe is a self clocking serial signal, there is no problem with having
it extended for long distances over a cable, unlike PCI signals. It
just happens that a USB 3 cable is right for that job, so that is what
is used on adapters like this. So if you wanted to, you could put a
much longer USB 3 cable on and have the tuners metres away from the
PC. If there is the right sort of space inside your PC case, you may
be able to mount the PCIe to PCI adapter internally. Alternatively,
you can get PCIe x1 to PCI adapters that go in the standard PCIe x1
slot and allow a low profile PCI card to be mounted directly on top of
them in the PCIe x1 slot. Since the TD-500s are supplied with a low
profile bracket as well as the full height one, you could consider
that option. It does use up two PCIe slots though, compared to using
the above adapter with puts both PCI cards on one PCIe x1 slot.
The chips in the WinTV-quadHD will be the new sort that have a low
noise amplifier/splitter frontend. They have one aerial input which
goes to an amplifier then to a splitter and then to each tuner. Since
there are four tuners, the amplifier makes the signal four times as
large so that when it is split four ways, each tuner gets the same
signal level as the original signal at the aerial input. Since it is
a low noise amplifier, there is not much quality loss in the
amplifier/splitter and the quality at each tuner is only a little less
than at the aerial input. I have two TBS cards (one DVT-T2 and one
DVB-S2) that have 8 tuners each and work like this, with only one
aerial input needed. They both work very well.
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