I used the info here
http://homepage.ntlworld.com/robin....ips/signal.html to do some checking.
This is what I got:
Code:
Frequency 402750000 Hz Locked
Signal to Noise Ratio 31 dB
QAM 64
Network Access Control Object ON
Power Level -15 dBmV
Upstream Value
Channel ID 1
Frequency 33584000 Hz Ranged
Ranging Service ID 1573
Symbol Rate 2.560 Msym/s
Power Level 44 dBmV
Software Version: SB4100-4.0.6-SCM-NOSHELL
Hardware Version: 0
MIB Version: II
GUI Version: 1.0
VxWorks Version: 5.3
The downstream power level seems on the low side.
I then remembered that there a 2 attenuators between the cable feed and my SACM (SB4100).
They are 3DB and 10DB. I removed them both to see what the results would be.
This what I got:
Code:
Frequency 402750000 Hz Locked
Signal to Noise Ratio 35 dB
QAM 64
Network Access Control Object ON
Power Level -3 dBmV
Upstream Value
Channel ID 1
Frequency 33584000 Hz Ranged
Ranging Service ID 1573
Symbol Rate 2.560 Msym/s
Power Level 29 dBmV
I just need to check with the knowledgable here whether I have done the right thing.
Thanks