Cisco Cisco Videoscape Voyager Vantage 3.3 用户指南
162
Services Diagnostics
RF Statistics Screen
Tuning Mode
The tuning mode of the QAM.
QAM-64
QAM-128
QAM-256
Status
The status of the receiver in regards
to receiving valid data.
to receiving valid data.
Locked — Receiver is locked onto
a frequency with valid QAM data
a frequency with valid QAM data
Unlocked — Receiver is not
locked onto a frequency with
valid QAM data
locked onto a frequency with
valid QAM data
Level
The approximate received signal level
(dBmV).
(dBmV).
Refer to hardware specifications.
Value displayed in white — Signal
level is nominal
level is nominal
Value displayed in amber —
Signal level is marginally too high
or too low
Signal level is marginally too high
or too low
Value displayed in red — Signal
level is unacceptably too high or
too low
level is unacceptably too high or
too low
S/N
The signal-to-noise ratio in dB.
Refer to hardware specifications.
Value displayed in white — Signal
level is nominal
level is nominal
Value displayed in amber —
Signal level is marginally too high
or too low
Signal level is marginally too high
or too low
Value displayed in red — Signal
level is unacceptably too high or
too low
level is unacceptably too high or
too low
n/a — Not applicable for this
DHCT
DHCT
Seconds
The number of seconds that the
frequency has been locked.
frequency has been locked.
[Integer > 0]
Corr Bytes
The number of corrected bytes sent
or received.
or received.
[Integer > 0]
Table 10
RF Statistics Screen (continued)
Field Name
Description
Possible Values