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Problem with a 20W BUC Codan
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Cosby View Drop Down
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Joined: 05/January/2010
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Points: 10 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Cosby Quote  Post ReplyReply Direct Link To This Post Topic: Problem with a 20W BUC Codan
    Posted: 22/January/2012 at 18:55
Hi all,
my BUC is resetting itself when it is tramitting but, it is stable when is not transmitting.
 
I have check Tx cable and conectors, Power circuit, BUC configuration, Modem all are goods.
how can i solve this issue?
 
Thanks for yours help!
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Ken Taylor View Drop Down
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Points: 177 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Ken Taylor Quote  Post ReplyReply Direct Link To This Post Posted: 22/January/2012 at 21:08
Have you got the hand-held control unit? Check for reflected power, BUC temperature or power supply alarms.

Good luck.

Ken
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Points: 10 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Cosby Quote  Post ReplyReply Direct Link To This Post Posted: 23/January/2012 at 08:34
Hi Ken there is sometimes Fan alarm but the temperature is good.
 
This is the configuration
 
PA State            On            Transmit Atten    12
Transmit On (RS232) On  (1)       Tx Alarm Thresh      0.0
Transmit On (RS485) On  (1)       Burst Pwr Thresh     0.0
Transmit On (FSK)   On  (1)       Serial I/face        9600,8,N,1,U
Transmit Default    Last (1)      Packet Protocol      NDSatcom (4)
Compensation Freq   6199          Packet Address       1
IF Comp Freq        1176          Red'cy -Mode         Non (0)
LO Freq             7375                 -On/Off Line  On (1)
 
 
 is there any suggestions?
 
Thanks
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Ken Taylor View Drop Down
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Points: 177 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Ken Taylor Quote  Post ReplyReply Direct Link To This Post Posted: 23/January/2012 at 09:51
Check the manual, available here:
http://www.codansatcom.com/portals/6/publications/satellite/technical%20information/user%20guides%20manuals/buc_userguide.pdf
(replace each %20 with a space).
You may need to replace the fan or send the unit for repair.
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Cosby View Drop Down
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Points: 10 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Cosby Quote  Post ReplyReply Direct Link To This Post Posted: 24/January/2012 at 18:39
Thanks Ken.
I have found the problem. The power supply was not the appropriete one> I changed it and the BUc is not flapping any more but the satellite operator said my carrier is low.
I have realigned the antenna but the carrier is still low.
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Points: 552 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Satcoms UK Quote  Post ReplyReply Direct Link To This Post Posted: 25/January/2012 at 12:27
Have you checked all the coax cables and connectors?
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