I have problems if I put 2 dm800 running on SCR, i have tune failure

I state that I have the same defect occurs with Humax SCR 150, AK541 ST and Humax SCR 151

if I attack a single dm800 on output SCR everything is working correctly

I tried to attack with a another box enigma2 and DM800 and everything is working correctly

I believe that the tuner of the DM800 are rev M

after a day of testing I solved the problem with the suggestions collected on Linsat Forum and I Had forum

as explained by Adenin on I Had this defect occurs on some systems

Zitat

the problem seems to stem from a defect in the tuner when you switch from 13V to 18V: The switching process is not stable and the voltage goes back for a short period of time (about 1 ms) to 0V ... seems to say it seems that not all tuners are afflicted by this bug hardware (thanks to Adenin for explanation).

my system is SCR Humax 151 and tree dm800 on output SCR

First I manually changed the file 'usr/lib/enigma2/phiton/Components/NimManager.py'

nim.toneAmplitude = ConfigSelection([("11", "340mV"), ("10",  "360mV"), ("9", "600mV"), ("8", "700mV"), ("7", "800mV"), ("6",  "900mV"), ("5", "1100mV")], "11")

I put 11 (340mV) in this way keeps changing even after a restart of the decoder

Then I changed two delay values by the plugin SatelliteEquipmentControl:

delay after last diseqc command from 50 to 100

delay after voltage change before switch command 20 to 75

Then in tuner configuration ---> advanced mode i have set in this way:

LNB unicable
HUMAX 150 (maybe in XML you can 'write 150/151, are identical)

and each decoder his SCR channel

Finally, the trick is to set:

DiSEqC 1.1 mode
repeat sequence
repeat diseqc ONE

leave other fields unchanged

repeat the same configuration on other receivers connected to 'LNB Unicable

and finally a complete restart never hurts.

I hope that the defect can be solved by dmm without my trick

see you soon