Home page of Satellite Internet and Information

Satellite Internet Forum.

Welcome, Guest.
Welcome to this satellite broadband discussion forum. Wherever you are and whatever your problem we are here to help each other. Connecting to the internet via satellite is not always easy but is critically important to those in remote places or with poor terrestrial infrastructure. Service providers and customers are encouraged to contribute. Register at the bottom of the forum home page if you wish to contribute or ask a question. VSAT service providers and satellite equipment sellers may feature their products free of charge; just register and get posting. Paid-for adverts, top left and top right, on all forum pages, are also available. Read the Forum rules.
      Home            Login            Register          
Pages: 1

Speedcast After Upgrade ??? Help

(Read 1933 times)
Ex Member
Ex Member

Apr 29th, 2007 at 3:43am  

At 21 April 2007, Speedcast KU-Band (PAS12) had upgraded the RCST (Linkstar) to the new version like below:

0xXXXXX SW rcst4- () rcst4s-2.2.0011.term.exe (PE)
0xXXXXX FW rcst4.16100106L.xilinx.dat () rcst4.15250706L.xilinx.dat (PE)

After upgrade done, my RxPower decreased about 4 value (before -46 and after -50).

Also, my upload speed decreased 30-50%.

Please confirm if there are other people have same problem like me.

FYI, here my TCMP result after upgrade:

    RSCorrectedErrorCount         0    RSUncorrectedErrorCount       0
    QPSKBER           0.00005333591    I2CErrorCount                 0
    LostSyncCount                 0    TimeSynced                 4347
    MaxTimeSynced              4347    Synced                        1
    TimeUnSynced                 54    NCODeviation                  0
    CarrDeviation       0.002660821    VCOLocked                     0
    CodeRate                    3/4    CarrierPhase             LOCKED
    RSVit                    LOCKED    UCActive             NOT ACTIVE
    Rs                     4.073489    Fs                           60
    frequency                  1416    UCLoaded                      1
    RxPower               -50.14016    RSFrameLength         700168018

BER 0.00005333591

Back to top
IP Logged
Ex Member
Ex Member

Reply #1 - May 1st, 2007 at 7:13pm  
Anybody ??

Please give me information for this issue.

After upgrade, my BER never got 0. Anybody have same issue ?

Back to top
IP Logged
Eric Johnston
Senior Member

Posts: 2109
Reply #2 - May 1st, 2007 at 8:57pm  
Raw BER rates like 0.00005 are excellent.  The QPSK BER is that BEFORE FEC is applied so the after FEC bit error rate is virtually nil.

Look for increases in the uncorrected errors in the output date , if you ever see them.   A few bits per day perhaps out of hundreds of millions - what is your carrier downlink bit rate:  20 Mbit/s perhaps ?

If your data throughput has dropped down it will be due to factors other than your dish pointing, which is clearly excellent.  I would suspect congestion, configuration, routing problems etc, as you may now be on a different outlink carrier or have different hub configuration feeding out to the new type modem.

Tell the hub all about your situation and ask for help. They can check your terminal, verify traffic routings and help with speed tests.

Best regards, Eric.
Back to top
IP Logged
Pages: 1