Thread: Qam16/qpsk
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Old 11-05-2011, 12:31   #19
craigj2k12
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Re: Qam16/qpsk

Quote:
Originally Posted by chambohambo View Post
Checked modem today and noticed the downstream has dropped from 7.5 DBMV what would cause this to happen? and I am still on QPSK upstream.

Cable Modem Downstream
Downstream Lock : Locked
Downstream Channel Id : 168
Downstream Frequency : 323000000 Hz
Downstream Modulation : QAM256
Downstream Symbol Rate : 6952 Ksym/sec
Downstream Interleave Depth : taps12Increment17
Downstream Receive Power Level : 0.9 dBmV
Downstream SNR : 37.0 dB

Cable Modem Upstream
Upstream Lock : Locked
Upstream Channel ID : 1
Upstream Frequency : 35800000 Hz
Upstream Modulation : QPSK
Upstream Symbol Rate : 5120 Ksym/sec
Upstream transmit Power Level : 49.7 dBmV
Upstream Mini-Slot Size : 4
they will be making changes at the network end, which could possible affect your power levels, however your levels awere out of spec before, and are now well in
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