Cisco Headend System Release 2.7 Guía Del Usuario
Chapter 3 tru2way Diagnostic Screens
64
78-4011047-01 Rev D
Field Names Description
Possible Values
Inband
Quality-1
(PWR, SNR)
Quality-1
(PWR, SNR)
The approximate received signal
level (PWR, in dBmV) and the
signal to noise ratio (SNR, in dB)
for the applicable QAM data
channels for tuner 1
level (PWR, in dBmV) and the
signal to noise ratio (SNR, in dB)
for the applicable QAM data
channels for tuner 1
PWR (Power)
Refer to specific hardware
specifications
• value displayed in white—
specifications
• value displayed in white—
signal level is nominal
• value displayed in amber—
signal level is between –12
and –15dBmV or between +12
and +15dBmV
and –15dBmV or between +12
and +15dBmV
• value displayed in red—
signal level is either lower than
–15dBmV or higher than
+15dBmV
–15dBmV or higher than
+15dBmV
n/a—not applicable on this DHCT
SNR (Signal to Noise Ratio)
Refer to specific hardware
specifications
• value displayed in white—
specifications
• value displayed in white—
signal level is nominal
• value displayed in red—
signal level is unacceptably too
high or too low:
− 64 QAM—signal level is
high or too low:
− 64 QAM—signal level is
lower than 25dB
− 256 QAM—power level is
either between –10 and –
15dBmV and SNR is less
than 36dB or power level
is between –10 and
+15dBmV and SNR is less
than 33dB
15dBmV and SNR is less
than 36dB or power level
is between –10 and
+15dBmV and SNR is less
than 33dB
n/a—not applicable on this DHCT
Inband
Errors-1
(Corr,
Uncorr)
Errors-1
(Corr,
Uncorr)
The number of bytes received in
error that have been successfully
corrected by the FEC code
(Corr) and the number of blocks
that have not been successfully
corrected (Uncorr) by the FEC
code for tuner 1
error that have been successfully
corrected by the FEC code
(Corr) and the number of blocks
that have not been successfully
corrected (Uncorr) by the FEC
code for tuner 1
Corr (Corrected bytes)
[Integer > 0]
Important: If incrementing rapidly,
macroblocking or picture freezing
may be present.
n/a—not applicable on this DHCT
Important: If incrementing rapidly,
macroblocking or picture freezing
may be present.
n/a—not applicable on this DHCT
Uncorr (Uncorrected blocks)
[Integer > 0]
Important: If incrementing rapidly,
macroblocking or picture freezing
may be present.
n/a—not applicable on this DHCT
Important: If incrementing rapidly,
macroblocking or picture freezing
may be present.
n/a—not applicable on this DHCT