From: Adam Baker <linux@baker-net.org.uk>
To: Antti Palosaari <crope@iki.fi>, linux-media@vger.kernel.org
Subject: Re: [PATCH 2/2] si2157: implement signal strength stats
Date: Sun, 31 May 2015 23:30:48 +0100 [thread overview]
Message-ID: <556B8B98.5050602@baker-net.org.uk> (raw)
In-Reply-To: <1432933510-19028-2-git-send-email-crope@iki.fi>
On 29/05/15 22:05, Antti Palosaari wrote:
> Implement DVBv5 signal strength stats. Returns dBm.
>
> Signed-off-by: Antti Palosaari <crope@iki.fi>
> ---
Tested-by: Adam Baker <linux@baker-net.org.uk>
I don't have the test gear to verify the absolute levels but the signal
level readings were close to those obtained feeding the same signal into
a Hauppauge Nova TD and varied as additional cables and splitters were
added in a consistent fashion. I didn't see much variation in C/N but I
wouldn't expect to in a setup with a masthead amp.
Turning the LNA on and off in a PCTV 292e showed that the LNA gives
approx 20dB gain.
Test environment was this patch, the si2168: Implement own I2C adapter
locking patch and Olli Salonen's si2168: add I2C error handling patch as
that is needed to make Antti's patch apply cleanly.
Adam
next prev parent reply other threads:[~2015-05-31 22:30 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-05-29 21:05 [PATCH 1/2] si2168: Implement own I2C adapter locking Antti Palosaari
2015-05-29 21:05 ` [PATCH 2/2] si2157: implement signal strength stats Antti Palosaari
2015-05-31 22:30 ` Adam Baker [this message]
2015-05-31 16:56 ` [PATCH 1/2] si2168: Implement own I2C adapter locking Adam Baker
2015-06-01 7:47 ` Antti Palosaari
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