Ldm Test Parameters; Table 88 Ldm Test Parameters - ZyXEL Communications IES-1248-71 User Manual

Chapter 41 Diagnostic
Table 87 Log Messages (continued)
LOG MESSAGE
THERMO OVER
TEMPERATURE: dev:<id>
threshold:<threshold>
(degree C)
value:<temp>(degree
C)!
THERMO OVER
TEMPERATURE released:
dev:<id>
threshold:<threshold>
(degree C)
value:<temp>(degree
C)!
THERMO OVER VOLTAGE:
nominal:<nominal>(mV)
value:<voltage> mV)!
THERMO OVER VOLTAGE
released:
nominal:<nominal>(mV)
value:<voltage> (mV)!

41.3 LDM Test Parameters

The following table lists the line diagnostics test parameters that display, see the ITU-T's
G.992.3 for more information.

Table 88 LDM Test Parameters

LABEL
number_of_
subcarries
hlinScale:
latn:
satn:
snrm:
attndr:
268
TYPE DESCRIPTION
The temperature was too high at one of the temperature
WARN
sensors.
<id> -
0: sensor near the ADSL chipset
1: sensor near the CPU
2: thermal sensor chip itself
<threshold> - threshold temperature
<temp> - temperature when the entry was logged
The temperature at one of the temperature sensors has come
INFO
back to normal.
<id>
0: sensor near the ADSL chipset
1: sensor near the CPU
2: thermal sensor chip itself
<threshold> - threshold temperature
<temp> - temperature when the entry was logged
The voltage went outside of the accepted operating range.
WARN
<nominal> - nominal voltage of the DC power
<voltage> - voltage of the DC power when logged
The voltage is back inside the accepted operating range.
INFO
<nominal> - nominal voltage of the DC power
<voltage> - voltage of the DC power when logged
DESCRIPTION
Discrete Multi-Tone (DMT) modulation divides up a line's bandwidth into sub-
carriers (sub-channels) of 4.3125 KHz each.
The first number is the total number of DMT sub-carriers the ADSL connection
is using. The second number indicates how many upstream DMT sub-carriers
the ADSL connection is using.
The channel characteristics function is represented in linear format by a scale
factor and a complex number. These are the maximum upstream and
downstream scale factors used in producing the channel characteristics
function.
This is the upstream and downstream Line Attenuation (in .1 dB).
This is the upstream and downstream Signal Attenuation (in .1 dB).
This is the upstream and downstream Signal-to-Noise Ratio Margin (in .1 dB). A
DMT sub-carrier's SNR is the ratio between the received signal power and the
received noise power. The signal-to-noise ratio margin is the maximum that the
received noise power could increase with the IES-1248 still being able to meet
its transmission targets.
This is the upstream and downstream Attainable Net Data Rate (in bit/s).
IES-1248-71/73 User's Guide