ASUSTeK Tiger LNA Hybrid Capture Device - signal unstable.
- From: "Ra.M." <ramsoft (at) virgilio.it>
- Date: Sat, 17 Mar 2007 15:00:58 +0100
Hartmut Hackmann wrote:
Hm, the LNA has such a high gain... i dont think that a additional
amplifier
will give improvement. Please do the following: set the options debug=1
for
the modules tuner and tda827x. and send me the kernel log of driver load
and tuning attempts.
The card i had in hands had no sensitivity problems. But is was a
'early
sample' You might decide to play with the antenna switch config
entry
in saa7134-dvb.c.
Hartmut
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I have enabled debug=1 for modules tuner and tda827x; this is the
kernel log:
----------------------- driver load ------------------------
Mar 17 02:28:34 darkstar kernel: tuner 2-004b: chip at addr 4b is a tda8290
Mar 17 02:28:34 darkstar kernel: tuner 2-004b: Setting mode_mask to 0x0e
Mar 17 02:28:34 darkstar kernel: tuner 2-004b: Calling set_type_addr for
type=54, addr=0xff, mode=0x04, config=0x02
Mar 17 02:28:34 darkstar kernel: tuner 2-004b: set addr for type -1
Mar 17 02:28:34 darkstar kernel: tuner 2-004b: defining GPIO callback
Mar 17 02:28:34 darkstar kernel: tuner 2-004b: saa7133[0] tuner I2C addr
0x96 with type 54 used for 0x0e
Mar 17 02:28:34 darkstar kernel: tuner 2-004b: defining GPIO callback
Mar 17 02:28:34 darkstar kernel: tuner 2-004b: saa7133[0] tuner I2C addr
0x96 with type 54 used for 0x0e
Mar 17 02:28:34 darkstar kernel: tda827x: tda827x_attach:
Mar 17 02:28:34 darkstar kernel: tda827x: tda827xa tuner found
Mar 17 02:29:09 darkstar kernel: tuner 2-004b: Cmd VIDIOC_S_STD accepted
for analog TV
Mar 17 02:29:09 darkstar kernel: tuner 2-004b: switching to v4l2
Mar 17 02:29:09 darkstar kernel: tuner 2-004b: tv freq set to 400.00
Mar 17 02:29:09 darkstar kernel: tuner 2-004b: setting tda8290 to system B
Mar 17 02:29:09 darkstar kernel: tuner 2-004b: tda827xa config is 0x02
Mar 17 02:29:09 darkstar kernel: tuner 2-004b: setting LNA to high gain
Mar 17 02:29:09 darkstar kernel: tuner 2-004b: AGC2 gain is: 0
Mar 17 02:29:09 darkstar kernel: tuner 2-004b: setting LNA to low gain
Mar 17 02:29:09 darkstar kernel: tuner 2-004b: tda8290 not locked, no
signal?
Mar 17 02:29:09 darkstar last message repeated 2 times
Mar 17 02:29:09 darkstar kernel: tuner 2-004b: adjust gain, step 1. Agc:
75, ADC stat: 0, lock: 0
Mar 17 02:29:10 darkstar kernel: tuner 2-004b: adjust gain, step 2. Agc:
231, lock: 0
Mar 17 02:29:10 darkstar kernel: tuner 2-004b: adjust gain, step 3. Agc: 75
Mar 17 02:29:10 darkstar kernel: tuner 2-004b: Cmd TUNER_SET_STANDBY
accepted for analog TV
------------------------- tuning attempts ---------------------------
Mar 17 02:30:40 darkstar kernel: tda827x: tda8275a AGC2 gain is: 0
Mar 17 02:31:11 darkstar last message repeated 3 times
Mar 17 02:32:13 darkstar last message repeated 12 times
Mar 17 02:32:51 darkstar last message repeated 10 times
Mar 17 02:34:32 darkstar last message repeated 14 times
Mar 17 02:34:39 darkstar last message repeated 2 times
Mar 17 02:37:13 darkstar kernel: tda827x: tda8275a AGC2 gain is: 0
Mar 17 02:38:16 darkstar last message repeated 10 times
Last night, for about 5 minutes, some channels have become perfectly stable;
probably, signal fluctuation?
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