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4 DIAGNOSTICS
Field
Downstream Channel (carries data from the headend to the set-top)
Carrier Lock
Frequency
LKC
Mode
Power Level
SNR
Upstream Channel (carries data from the set-top to the headend)
Frequency
Mode
Channel ID
Power Level
Symbol Rate
Known MAC
Addresses
Description
•
YES — The cable modem is locked to a DOCSIS downstream channel
•
NO — The cable modem is not locked to a downstream channel
•
N/A — The value is invalid or cannot be retrieved or DOCSIS is not enabled
The center frequency of the channel to which the DOCSIS downstream channel receiver
is tuned. It can be 54 to 860 MHz. If the value is invalid or cannot be retrieved,
downstream Carrier Lock is NO, or DOCSIS is not enabled, N/A is displayed.
The last known carrier (LKC); the frequency of the last tuned downstream channel used if
the embedded cable modem enters hunt mode. It can be 54 to 860 MHz. If the value is
invalid or cannot be retrieved, Carrier Lock is NO, or DOCSIS is not enabled, N/A is
displayed.
The DOCSIS downstream channel modulation: QAM 64 or QAM 256. If the value is
invalid or cannot be retrieved, Carrier Lock is NO, or DOCSIS is not enabled, 000 is
displayed.
The downstream channel power level in dBmV. If the value is invalid or cannot be
retrieved, Carrier Lock is NO, or DOCSIS is not enabled, 000 is displayed.
The estimated downstream channel carrier signal-to-noise ratio in the format xx.x dB. It is
the value reported as SNR in the MIB. If the value is invalid or cannot be retrieved, Carrier
Lock is NO, or DOCSIS is not enabled, 00.0 is displayed.
The center frequency of the channel to which the DOCSIS upstream channel receiver is
tuned. It can be 5 to 42 MHz. If the value is invalid or cannot be retrieved, Carrier Lock is
NO, or DOCSIS is not enabled, N/A is displayed.
The DOCSIS upstream channel modulation: QPSK, QAM 8, QAM 16, QAM 32, QAM 64,
or QAM 128. If the value is invalid or cannot be retrieved or DOCSIS is not enabled, N/A is
displayed.
The upstream channel identifier 0 to 255. If the value is invalid or cannot be retrieved or
DOCSIS is not enabled, N/A is displayed.
The upstream channel power level in dBmV. If the value is invalid or cannot be retrieved
or DOCSIS is not enabled, 000 is displayed.
The upstream channel symbol rate in mega-symbols per second. If the value is invalid or
cannot be retrieved or DOCSIS is not enabled, 0.000 is displayed.
Displays up to 32 MAC addresses learned by the DCH6200 cable modem, including the
Set-Top MAC and future MAC addresses assigned by DSG, in hexadecimal format
xx:xx:xx:xx:xx:xx on two screens if necessary. If the value is invalid or cannot be retrieved
or DOCSIS is not enabled, no values are displayed.
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