Cisco Cisco Explorer Set-top Software Version 2.1 Guía Del Usuario
Digital Channels Freeze or Block (Macroblocking)
749244 Rev G
195
Access the following
diagnostic screen.
diagnostic screen.
Evaluate the
following field.
following field.
What value do I want to see?
Page 1—Status Summary
Tuner
Frequency level of inband tuner
should display in the "white"—
acceptable value
should display in the "white"—
acceptable value
-8 dBmV to +8 dBmV—
desired value
desired value
Note: If the tuner value
appears in amber or red,
check the signal levels.
appears in amber or red,
check the signal levels.
Page 4—Statuses and
Network Parameters
Network Parameters
Important: If all of these
values are 0 and
macroblocking still exists,
contact Cisco Services.
values are 0 and
macroblocking still exists,
contact Cisco Services.
MPEG STATS
PEI
PER
SER
RST
A/V Disc
0—desired value
Note: If all of these values are 0
and macroblocking still exists,
check the QAM and the quality of
feed coming out of the QAM.
and macroblocking still exists,
check the QAM and the quality of
feed coming out of the QAM.
Page 5—RF Status
CURRENT QAM
Freq
Tuner—should be tuned to correct
QAM
QAM
Status—locked (desired value)
Note: If the status is not "locked,"
check the QAM and the RF signal
levels.
check the QAM and the RF signal
levels.
CURRENT QAM
S/N
QAM-64—28 dBmV to 34 dBmV
desired range
desired range
(minimum 25 dBmV)
QAM-256—32 dBmV to 34 dBmV
desired range (minimum 39 dBmV)
desired range (minimum 39 dBmV)
Note: If the S/N value is not within
the desired range, check the QAM
and the RF signal levels.
the desired range, check the QAM
and the RF signal levels.
CURRENT QAM
Corr Bytes
Uncor
Blks/Current FDC
Blks/Current FDC
Corr Bytes and Uncor Blks
should be static—if the values
are incrementing rapidly, the QAM
could be sending bad blocks of
data. Check the RF signal levels
coming out of the QAM and the
DHCT connection.
should be static—if the values
are incrementing rapidly, the QAM
could be sending bad blocks of
data. Check the RF signal levels
coming out of the QAM and the
DHCT connection.