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VSAT technology and installation >> iDirect Forum: hubs and terminals >> net modem II+ https://www.satsig.net/cgi-bin/yabb/YaBB.pl?num=1202559367 Message started by chaady on Feb 9th, 2008 at 12:16pm |
Title: net modem II+ Post by chaady on Feb 9th, 2008 at 12:16pm
i have problem with net modem II+
i can ping +use i site + use telnet+console i can do every thing when i make line up with NOC they said transmission is very low by they way when fix i direct 3000 on the same dish+cable+lnb+buc it is work somth help me what i can do in the case |
Title: Re: net modem II+ Post by TDMAMike on Feb 9th, 2008 at 12:38pm
How did they diagnose the transmission as being low? Did they bring you up CW carrier and look at you? Have you put a specan on the IF port of the modem to ensure it is radiating L-Band (any freq)? I would start there and work your way thru the uplink chain.
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Title: Re: net modem II+ Post by issam on Feb 15th, 2008 at 8:15pm
the problem in the NM+ll itself , if you do small test , on same dish + cables + lnb + buc , type the command[ rx snr] in the telnet if you got it for example 10 db in the infinti modem you will got it 9 in NM+ll , same for up C/N , i think this is releated to the NM+ll itself ,
Regards Ahmed |
Title: Re: net modem II+ Post by Lukio on Feb 16th, 2008 at 5:10pm
Hi Chaady,
What is the serial number of the II+? I've had TX problems with practically all II+ NM's on the networks I manage. Initially they start going low U/S SNR so you increase the TX power....which usually has no effect and eventually it goes so poor it drops out of the network altogether. The affected batch, which is a known technical issue with iDirect, is between serial numbers 10000 and 20000 with the worst affected being serial numbers 14000 - 16000. It may be the cause of your issues but like Mike says, thoroughly investigate your uplink chain first. If your NMII+ does have this issue it's back to iDirect/your supplier for repair I'm afraid. Hope this helps, Lukio ;.) |
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