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Modem Blinking Send

We are using Motorola Surfboard modems SB100,101&101i along with Motorola BSR1000 for cmts. We have one area that has 2 bsr's feeding a forward laser, 2 nodes in the feild. I have noticed that from time to time on both nodes I will have an address where the modem will not come up. Blinking send. Bsr downstreams are qam 256 set 6 db below analog carriers at 273 and 285 mhz. Each time using DSAM6000 the meter comes right up with an upstream headroom (qam 64) of at least 15 db. No odd mer/ber on the downstream frq. I have used a laptop and used the 192.168.100.1 command and have been able to see the modem page. Everytime that it just has a blinking send the downstream has locked onto the wrong downstream frq for that node. Some of the modems I have I can manually type in the right downstream frq but most I cannot. After I find a modem that will come up the downstream S/N is usually 38-40 levels are normally 5to -5 and the upstream is about 45-50, which is onboard with what the DSAM6000 tells me. Also both Bsr downstream FRq's are within .5 db at the back of the modem. Why do I run into modems that refuse to come online? Any insight would be appreciated.
This is CABL.com posting #315442. Tiny Link: cabl.co/mbudW
There are 2 replies to this message
Re: Modem Blinking Send Joshua_nadel 10/16/2010 11:19:40 PM
Re: Modem Blinking Send VaCableTech 10/15/2010 7:41:42 PM