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4-6
Diagnostics
DCT6400 Series Installation Manual
Field Description
SNR
When carrier lock has been established, displays an estimate of the carrier signal-to-noise
ratio in dB, with an explanation:
GOOD — Good value
FAIR
— Marginal signal level, check the signal
POOR — Unusable signal
INVALID — Invalid SNR value
AGC
When carrier lock has been established, displays an estimate of the AGC as a
percentage, with an explanation:
GOOD — Good value
FAIR
— Marginal signal level, check the signal
POOR — Unusable signal
INVALID — Invalid AGC value
EMM Provider ID
Displays the conditional access stream for the set-top, in hexadecimal format.
EMM PID
Displays the packet identifier (PID) stream the set-top tunes to for EMM data, in
hexadecimal format.
Network PID
Displays the network PID to which the set-top is tuned to receive network messages, in
hexadecimal format.
d04 In-Band Status
This diagnostic displays the in-band status for the last attempted tuned channel. The
information is updated every 5 seconds.
IN-BAND DIAGNOSTIC
MODE:
64
QAM
CARRIER LOCK:
YES
DATA:
YES
SNR 32.0
dB
GOOD
AGC: 23
%
FAIR
5 SECOND ERROR COUNTS:
UNCORRECTABLE:
1234
CORRECTABLE:
5678
Figure 4-5
LED display for in-band diagnostic
MUTE
MUTE
P
IB diagnostic
indicator
Data activity indicator
Carrier lock indicator
(L = locked, U = unlocked)