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Cable modulation-profile

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flavio.mali
Cable modulation-profile

Dear,
            Could anyone provide me a good example of modulation-profile cable for A-TDMA channel 6.4Mhz 16QAM which when noise increase pass to QPSK?

Thank you.

cmcaldas
depends

what cmts is it for? not all the same

flavio.mali
ubr10k

sorry. cisco ubr10k.

cmcaldas
try these

cable modulation-profile 21 request 0 16 0 22 qpsk scrambler 152 no-diff 32 fixed
cable modulation-profile 21 initial 5 34 0 48 qpsk scrambler 152 no-diff 64 fixed
cable modulation-profile 21 station 5 34 0 48 qpsk scrambler 152 no-diff 64 fixed
cable modulation-profile 21 short 3 76 12 22 qpsk scrambler 152 no-diff 64 shortened
cable modulation-profile 21 long 7 231 0 22 qpsk scrambler 152 no-diff 64 shortened
cable modulation-profile 22 request 0 16 0 22 qpsk scrambler 152 no-diff 32 fixed
cable modulation-profile 22 initial 5 34 0 48 qpsk scrambler 152 no-diff 64 fixed
cable modulation-profile 22 station 5 34 0 48 qpsk scrambler 152 no-diff 64 fixed
cable modulation-profile 22 short 4 76 7 22 16qam scrambler 152 no-diff 128 shortened
cable modulation-profile 22 long 10 220 0 22 16qam scrambler 152 no-diff 128 shortened
cable modulation-profile 23 request 0 16 0 22 qpsk scrambler 152 no-diff 32 fixed
cable modulation-profile 23 initial 5 34 0 48 qpsk scrambler 152 no-diff 64 fixed
cable modulation-profile 23 station 5 34 0 48 qpsk scrambler 152 no-diff 64 fixed
cable modulation-profile 23 short 4 76 7 22 16qam scrambler 152 no-diff 128 shortened
cable modulation-profile 23 long 7 231 0 22 16qam scrambler 152 no-diff 128 shortened
cable modulation-profile 121 request 0 16 0 22 qpsk scrambler 152 no-diff 32 fixed
cable modulation-profile 121 initial 5 34 0 48 qpsk scrambler 152 no-diff 64 fixed
cable modulation-profile 121 station 5 34 0 48 qpsk scrambler 152 no-diff 64 fixed
cable modulation-profile 121 short 3 76 12 22 qpsk scrambler 152 no-diff 64 shortened
cable modulation-profile 121 long 7 231 0 22 qpsk scrambler 152 no-diff 64 shortened
cable modulation-profile 121 a-short 6 76 6 22 64qam scrambler 152 no-diff 64 shortened qpsk1 1 2048
cable modulation-profile 121 a-long 8 231 0 22 64qam scrambler 152 no-diff 64 shortened qpsk1 1 2048
cable modulation-profile 121 a-ugs 8 231 0 22 64qam scrambler 152 no-diff 64 shortened qpsk1 1 2048
cable modulation-profile 225 request 0 16 0 22 qpsk scrambler 152 no-diff 36 fixed qpsk0 1 2048
cable modulation-profile 225 initial 5 34 0 48 qpsk scrambler 152 no-diff 98 fixed qpsk0 1 2048
cable modulation-profile 225 station 5 34 0 48 qpsk scrambler 152 no-diff 98 fixed qpsk0 1 2048
cable modulation-profile 225 a-short 5 76 6 22 32qam scrambler 152 no-diff 64 shortened qpsk1 1 2048
cable modulation-profile 225 a-long 9 232 0 22 32qam scrambler 152 no-diff 64 shortened qpsk1 1 2048
cable modulation-profile 225 a-ugs 9 232 0 22 32qam scrambler 152 no-diff 64 shortened qpsk1 1 2048
cable modulation-profile 226 request 0 16 0 22 qpsk scrambler 152 no-diff 36 fixed qpsk0 1 2048
cable modulation-profile 226 initial 5 34 0 48 qpsk scrambler 152 no-diff 98 fixed qpsk0 1 2048
cable modulation-profile 226 station 5 34 0 48 qpsk scrambler 152 no-diff 98 fixed qpsk0 1 2048
cable modulation-profile 226 a-short 4 76 7 22 16qam scrambler 152 no-diff 64 shortened qpsk1 1 2048
cable modulation-profile 226 a-long 9 232 0 22 16qam scrambler 152 no-diff 64 shortened qpsk1 1 2048
cable modulation-profile 226 a-ugs 9 232 0 22 16qam scrambler 152 no-diff 64 shortened qpsk1 1 2048

cmcaldas
for mod profiles I can offer

for mod profiles I can offer these below. you'll need spect mngmt to setup for when it goes from one to the other. that I'm not sure of for Cisco, when SNR drops to 25 goto 32Qam or 16Qam and then back to 64Qam when above 28 SNR
cable modulation-profile 21 request 0 16 0 22 qpsk scrambler 152 no-diff 32 fixed
cable modulation-profile 21 initial 5 34 0 48 qpsk scrambler 152 no-diff 64 fixed
cable modulation-profile 21 station 5 34 0 48 qpsk scrambler 152 no-diff 64 fixed
cable modulation-profile 21 short 3 76 12 22 qpsk scrambler 152 no-diff 64 shortened
cable modulation-profile 21 long 7 231 0 22 qpsk scrambler 152 no-diff 64 shortened
cable modulation-profile 22 request 0 16 0 22 qpsk scrambler 152 no-diff 32 fixed
cable modulation-profile 22 initial 5 34 0 48 qpsk scrambler 152 no-diff 64 fixed
cable modulation-profile 22 station 5 34 0 48 qpsk scrambler 152 no-diff 64 fixed
cable modulation-profile 22 short 4 76 7 22 16qam scrambler 152 no-diff 128 shortened
cable modulation-profile 22 long 10 220 0 22 16qam scrambler 152 no-diff 128 shortened
cable modulation-profile 23 request 0 16 0 22 qpsk scrambler 152 no-diff 32 fixed
cable modulation-profile 23 initial 5 34 0 48 qpsk scrambler 152 no-diff 64 fixed
cable modulation-profile 23 station 5 34 0 48 qpsk scrambler 152 no-diff 64 fixed
cable modulation-profile 23 short 4 76 7 22 16qam scrambler 152 no-diff 128 shortened
cable modulation-profile 23 long 7 231 0 22 16qam scrambler 152 no-diff 128 shortened
cable modulation-profile 121 request 0 16 0 22 qpsk scrambler 152 no-diff 32 fixed
cable modulation-profile 121 initial 5 34 0 48 qpsk scrambler 152 no-diff 64 fixed
cable modulation-profile 121 station 5 34 0 48 qpsk scrambler 152 no-diff 64 fixed
cable modulation-profile 121 short 3 76 12 22 qpsk scrambler 152 no-diff 64 shortened
cable modulation-profile 121 long 7 231 0 22 qpsk scrambler 152 no-diff 64 shortened
cable modulation-profile 121 a-short 6 76 6 22 64qam scrambler 152 no-diff 64 shortened qpsk1 1 2048
cable modulation-profile 121 a-long 8 231 0 22 64qam scrambler 152 no-diff 64 shortened qpsk1 1 2048
cable modulation-profile 121 a-ugs 8 231 0 22 64qam scrambler 152 no-diff 64 shortened qpsk1 1 2048
cable modulation-profile 225 request 0 16 0 22 qpsk scrambler 152 no-diff 36 fixed qpsk0 1 2048
cable modulation-profile 225 initial 5 34 0 48 qpsk scrambler 152 no-diff 98 fixed qpsk0 1 2048
cable modulation-profile 225 station 5 34 0 48 qpsk scrambler 152 no-diff 98 fixed qpsk0 1 2048
cable modulation-profile 225 a-short 5 76 6 22 32qam scrambler 152 no-diff 64 shortened qpsk1 1 2048
cable modulation-profile 225 a-long 9 232 0 22 32qam scrambler 152 no-diff 64 shortened qpsk1 1 2048
cable modulation-profile 225 a-ugs 9 232 0 22 32qam scrambler 152 no-diff 64 shortened qpsk1 1 2048
cable modulation-profile 226 request 0 16 0 22 qpsk scrambler 152 no-diff 36 fixed qpsk0 1 2048
cable modulation-profile 226 initial 5 34 0 48 qpsk scrambler 152 no-diff 98 fixed qpsk0 1 2048
cable modulation-profile 226 station 5 34 0 48 qpsk scrambler 152 no-diff 98 fixed qpsk0 1 2048
cable modulation-profile 226 a-short 4 76 7 22 16qam scrambler 152 no-diff 64 shortened qpsk1 1 2048
cable modulation-profile 226 a-long 9 232 0 22 16qam scrambler 152 no-diff 64 shortened qpsk1 1 2048
cable modulation-profile 226 a-ugs 9 232 0 22 16qam scrambler 152 no-diff 64 shortened qpsk1 1 2048

mbowe
There are various predefined

There are various predefined profiles, you can see them if you type "cable modulation profile 222 ?"

So for 16QAM with fallback to QPSK you could do something like :

cable modulation profile 222 robust-mix-low
cable modulation profile 223 qpsk
interface cable 5/0/0
cable up 0 modulation-profile 222 223

flavio.mali
The one I had in cmts was one

The one I had in cmts was one of 64qam. I am currently using this 222 for pure qpsk. on the net I found this 223. Can this be two?

cable modulation-profile 222 request 0 16 0 22 qpsk scrambler 152 no-diff 36 fixed qpsk0 1 2048
cable modulation-profile 222 initial 5 34 0 48 qpsk scrambler 152 no-diff 98 fixed qpsk0 1 2048
cable modulation-profile 222 station 5 34 0 48 qpsk scrambler 152 no-diff 98 fixed qpsk0 1 2048
cable modulation-profile 222 a-short 3 76 12 22 qpsk scrambler 152 no-diff 64 shortened qpsk0 1 2048
cable modulation-profile 222 a-long 9 232 0 22 qpsk scrambler 152 no-diff 64 shortened qpsk0 1 2048
cable modulation-profile 222 a-ugs 9 232 0 22 qpsk scrambler 152 no-diff 64 shortened qpsk0 1 2048

cable modulation-profile 223 request 0 16 0 8 qpsk scrambler 152 no-diff 64 fixed qpsk0 1 2048
cable modulation-profile 223 initial 5 34 0 48 qpsk scrambler 152 no-diff 128 fixed qpsk0 1 2048
cable modulation-profile 223 station 5 34 0 48 qpsk scrambler 152 no-diff 128 fixed qpsk0 1 2048
cable modulation-profile 223 a-short 5 78 19 17 16qam scrambler 152 no-diff 100 shortened qpsk1 1 2048
cable modulation-profile 223 a-long 9 232 139 77 16qam scrambler 152 no-diff 108 shortened qpsk1 1 2048
cable modulation-profile 223 a-ugs 9 232 139 77 16qam scrambler 152 no-diff 108 shortened qpsk1 1 2048

thanks!

flavio.mali
The one I had in cmts was one

The one I had in cmts was one of 64qam. I am currently using this 222 for pure qpsk. on the net I found this 223. Can this be two?

cable modulation-profile 222 request 0 16 0 22 qpsk scrambler 152 no-diff 36 fixed qpsk0 1 2048
cable modulation-profile 222 initial 5 34 0 48 qpsk scrambler 152 no-diff 98 fixed qpsk0 1 2048
cable modulation-profile 222 station 5 34 0 48 qpsk scrambler 152 no-diff 98 fixed qpsk0 1 2048
cable modulation-profile 222 a-short 3 76 12 22 qpsk scrambler 152 no-diff 64 shortened qpsk0 1 2048
cable modulation-profile 222 a-long 9 232 0 22 qpsk scrambler 152 no-diff 64 shortened qpsk0 1 2048
cable modulation-profile 222 a-ugs 9 232 0 22 qpsk scrambler 152 no-diff 64 shortened qpsk0 1 2048

cable modulation-profile 223 request 0 16 0 8 qpsk scrambler 152 no-diff 64 fixed qpsk0 1 2048
cable modulation-profile 223 initial 5 34 0 48 qpsk scrambler 152 no-diff 128 fixed qpsk0 1 2048
cable modulation-profile 223 station 5 34 0 48 qpsk scrambler 152 no-diff 128 fixed qpsk0 1 2048
cable modulation-profile 223 a-short 5 78 19 17 16qam scrambler 152 no-diff 100 shortened qpsk1 1 2048
cable modulation-profile 223 a-long 9 232 139 77 16qam scrambler 152 no-diff 108 shortened qpsk1 1 2048
cable modulation-profile 223 a-ugs 9 232 139 77 16qam scrambler 152 no-diff 108 shortened qpsk1 1 2048

Thanks!

Anonymous (not verified)
Thank you again..

Thank you again..

flavio.mali
I am currently using the qpsk

I am currently using the qpsk-moduladion-profile 222 standard. I found the 223 on the internet. Can I use these two for what I want?

cable modulation-profile 222 request 0 16 0 22 qpsk scrambler 152 no-diff 36 fixed qpsk0 1 2048
cable modulation-profile 222 initial 5 34 0 48 qpsk scrambler 152 no-diff 98 fixed qpsk0 1 2048
cable modulation-profile 222 station 5 34 0 48 qpsk scrambler 152 no-diff 98 fixed qpsk0 1 2048
cable modulation-profile 222 a-short 3 76 12 22 qpsk scrambler 152 no-diff 64 shortened qpsk0 1 2048
cable modulation-profile 222 a-long 9 232 0 22 qpsk scrambler 152 no-diff 64 shortened qpsk0 1 2048
cable modulation-profile 222 a-ugs 9 232 0 22 qpsk scrambler 152 no-diff 64 shortened qpsk0 1 2048

cable modulation-profile 223 request 0 16 0 8 qpsk scrambler 152 no-diff 64 fixed qpsk0 1 2048
cable modulation-profile 223 initial 5 34 0 48 qpsk scrambler 152 no-diff 128 fixed qpsk0 1 2048
cable modulation-profile 223 station 5 34 0 48 qpsk scrambler 152 no-diff 128 fixed qpsk0 1 2048
cable modulation-profile 223 a-short 5 78 19 17 16qam scrambler 152 no-diff 100 shortened qpsk1 1 2048
cable modulation-profile 223 a-long 9 232 139 77 16qam scrambler 152 no-diff 108 shortened qpsk1 1 2048
cable modulation-profile 223 a-ugs 9 232 139 77 16qam scrambler 152 no-diff 108 shortened qpsk1 1 2048

Thanks!

flavio.mali
16qam-qpsk

What do you think of these two modulation-profiles? Will it serve my purpose?

cable modulation-profile 223 request 0 16 0 22 qpsk scrambler 152 no-diff 36 fixed qpsk0 1 2048
cable modulation-profile 223 initial 5 34 0 48 qpsk scrambler 152 no-diff 98 fixed qpsk0 1 2048
cable modulation-profile 223 station 5 34 0 48 qpsk scrambler 152 no-diff 98 fixed qpsk0 1 2048
cable modulation-profile 223 a-short 4 76 7 22 16qam scrambler 152 no-diff 64 shortened qpsk1 1 2048
cable modulation-profile 223 a-long 9 232 0 22 16qam scrambler 152 no-diff 64 shortened qpsk1 1 2048
cable modulation-profile 223 a-ugs 9 232 0 22 16qam scrambler 152 no-diff 64 shortened qpsk1 1 2048

cable modulation-profile 222 request 0 16 0 22 qpsk scrambler 152 no-diff 36 fixed qpsk0 1 2048
cable modulation-profile 222 initial 5 34 0 48 qpsk scrambler 152 no-diff 98 fixed qpsk0 1 2048
cable modulation-profile 222 station 5 34 0 48 qpsk scrambler 152 no-diff 98 fixed qpsk0 1 2048
cable modulation-profile 222 a-short 3 76 12 22 qpsk scrambler 152 no-diff 64 shortened qpsk0 1 2048
cable modulation-profile 222 a-long 9 232 0 22 qpsk scrambler 152 no-diff 64 shortened qpsk0 1 2048
cable modulation-profile 222 a-ugs 9 232 0 22 qpsk scrambler 152 no-diff 64 shortened qpsk0 1 2048

Thanks!

flavio.mali
16qam-qpsk

What do you think of these two modulation-profiles? Will it serve my purpose?

cable modulation-profile 223 request 0 16 0 22 qpsk scrambler 152 no-diff 36 fixed qpsk0 1 2048
cable modulation-profile 223 initial 5 34 0 48 qpsk scrambler 152 no-diff 98 fixed qpsk0 1 2048
cable modulation-profile 223 station 5 34 0 48 qpsk scrambler 152 no-diff 98 fixed qpsk0 1 2048
cable modulation-profile 223 a-short 4 76 7 22 16qam scrambler 152 no-diff 64 shortened qpsk1 1 2048
cable modulation-profile 223 a-long 9 232 0 22 16qam scrambler 152 no-diff 64 shortened qpsk1 1 2048
cable modulation-profile 223 a-ugs 9 232 0 22 16qam scrambler 152 no-diff 64 shortened qpsk1 1 2048

cable modulation-profile 222 request 0 16 0 22 qpsk scrambler 152 no-diff 36 fixed qpsk0 1 2048
cable modulation-profile 222 initial 5 34 0 48 qpsk scrambler 152 no-diff 98 fixed qpsk0 1 2048
cable modulation-profile 222 station 5 34 0 48 qpsk scrambler 152 no-diff 98 fixed qpsk0 1 2048
cable modulation-profile 222 a-short 3 76 12 22 qpsk scrambler 152 no-diff 64 shortened qpsk0 1 2048
cable modulation-profile 222 a-long 9 232 0 22 qpsk scrambler 152 no-diff 64 shortened qpsk0 1 2048
cable modulation-profile 222 a-ugs 9 232 0 22 qpsk scrambler 152 no-diff 64 shortened qpsk0 1 2048

Thanks!

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