[linux-dvb] ves1820 FEC, have problems with cable provider

thomas schorpp t.schorpp at gmx.de
Sun Jul 24 16:17:24 CEST 2005


Andrew de Quincey wrote:
>>claimed MTBF is surely 5-10 years for such chips.
>>more likely your card got overheated in summer in the pc case... ;)
>>this would cause chip damage, or electrostatics.
> 
> 

> The machines are well ventilated: they're in air conditioned comms. rooms at 
> multiple sites - I don't think they're overheating. It is a major pain 
> though :(
> 
> 

ok,

according to this

http://www.vdr-wiki.de/wiki/images/2/2c/Fujitsu-siemens_dvb-c_jumper.jpg

and this

http://www.vdr-wiki.de/wiki/images/1/1d/Tt_dvb-c_2.1.jpg

http://www.vdr-wiki.de/wiki/images/2/20/Dvb-s_1.3_hauppauge_wintv.jpg

in comparison to this

http://www.vdr-wiki.de/wiki/images/c/c2/Dvb-s_1.3_technisat_skystar.jpg

technisat engineers acknowlegded one problem: operating temperature of
the ves1xxx chips.

so i'll apply a heatsink and report.

this just to be sure:

schorpp at tom1:~$ sensors
w83697hf-isa-0290
Adapter: ISA adapter
VCore:     +1.73 V  (min =  +1.71 V, max =  +1.89 V)
+3.3V:     +3.27 V  (min =  +3.13 V, max =  +3.46 V)
+5V:       +5.01 V  (min =  +4.76 V, max =  +5.24 V)
+12V:     +11.97 V  (min = +10.82 V, max = +13.18 V)
in5:       +3.04 V  (min =  +0.00 V, max =  +0.26 V)
in6:       +3.12 V  (min =  +0.03 V, max =  +0.26 V)
in7:       +3.18 V  (min =  +0.13 V, max =  +0.26 V)
in8:       +1.79 V  (min =  +1.02 V, max =  +0.00 V)
fan1:     1985 RPM  (min = 1500 RPM, div = 4)
fan2:     2445 RPM  (min = 1997 RPM, div = 4)
temp1:       +29 C  (high =   +40 C, hyst =   +37 C)   sensor = thermistor
temp2:     +49.0 C  (high =   +60 C, hyst =   +55 C)   sensor = thermistor
alarms:
beep_enable:
          Sound alarm disabled

-board an power supply are 4 months old.

y
tom

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