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Old February 12th 12, 06:01 PM posted to sci.electronics.repair,rec.radio.amateur.antenna,sci.electronics.design
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Posts: 398
Default Increasing Cable TV SIGNAL LEVELS


amdx wrote:

On 2/10/2012 8:11 PM, Jeff Liebermann wrote:
? On Fri, 10 Feb 2012 11:47:54 -0600, ?
? wrote:
?
?? The Box is a CISCO RNG100
?? Only data I know how to get is;
?? Tuner 537.00 Mhz 2dbmv
?? TDC 75.25 Mhz 5dbmv
?? RDC 20.00 Mhz 30.0dbmv Yes 30.0
??
?
? It's the same as the Cisco Explorer 1540C with some features removed
? by Comcast.
? ?http://www.cincinnatibell.com/shared...40_uguide.pdf?
?
? How to get into the diagnostics:
? Press and hold SELECT on front of unit until the MAIL light
? starts to flash, then press INFO.
? Or
? Press and hold PAUSE on remote until MAIL light starts to
? flash (around 10-15 seconds), then press PAGE-UP (-).
? On some remotes, PAGE (+) might need to be used instead.

? See if you can excavate the SNR numbers. Maybe there's RF garbage on
? the systems (oscillating distribution amp, ingress, whatever, etc).

Hi Jeff,
I don't seem to be able to follow your directions, I don't think I
have enough buttons. To get the info I posted, Push and hold the power
button until the power light blinks, then push power again and the info
screen comes up.
I don't know what the MAIL light is, I don't have a select button nor
a INFO button.
Hey started pushing buttons on the remote, found I can scroll through
15 pages off stuuf I don't have a clue about.

Got some "RF Statistics on page 5"
Current FDC
Freq. 75.250
Level 5 dbmv
S/N 29db
Errs/Ave 0/0

Current Qam
Freq. 513 Mhz
Level -1dbmv
S/N 35db
Errs/Ave 11/0 or 11/1 or 11/3 but mostly 11/0



It shows that you have a 6 dB slope, and the high end is 1 dBmv below
the standard level. It also shows a lot of errors in the recovered
data. QAM is the digital TV signal. Unscrambled channels are referred
to as Clear QAM


--
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