Motorola DCT3412 - Manual (Page 66)

4-26 Diagnostics
Field Description
Downstream Channel (carries data from the headend to the set-top)
Carrier Lock 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.
Frequency 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.
LKC 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; if DOCSIS is not enabled, N/A is
displayed.
Mode The DOCSIS downstream channel modulation: QAM 64 or QAM 256. If the value is invalid
or cannot be retrieved, Carrier Lock is NO; if DOCSIS is not enabled, 000 is displayed.
Power Level The downstream channel power level in dBmV. If the value is invalid or cannot be
retrieved, Carrier Lock is NO; if DOCSIS is not enabled, 000 is displayed.
SNR 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; if DOCSIS is not enabled, 00.0 is displayed.
Upstream Channel (carries data from the set-top to the headend)
Frequency 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; if DOCSIS is not enabled, N/A is displayed.
Mode 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.
Channel ID 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.
Power Level The upstream channel power level in dBmV. If the value is invalid or cannot be retrieved,
or DOCSIS is not enabled, 000 is displayed.
Symbol Rate 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.
Known MAC
Addresses Displays up to 32 MAC addresses learned by the DCT3412 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.
DCT3412 Installation Manual