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Bicephale

join:2005-09-24
kudos:3

reply to tertech

Re: Yet Another Modem Statistics tool

Oh, i almost forgot...

One question about reading aberrations: 'DMT'
in "Diagnosis" mode often generates very large
numbers during transitions which would totally
offset a curve's range. I've been working with
'GNUmeric' SpreadSheets lately and my solution
to that problem was to "clip" those events to a
negligible negative fraction if negative or what
appears to be the curve's normal peek, my goal
being to conserve as much details as possible.

I'm wondering how you dealt with that relatively
to the log files (the display itself already has two
customisable fields for the upper/lower limits).



tertech

join:2008-04-12
Ottawa, ON

said by Bicephale:

Oh, i almost forgot...

One question about reading aberrations: 'DMT'
in "Diagnosis" mode often generates very large
numbers during transitions which would totally
offset a curve's range. I've been working with
'GNUmeric' SpreadSheets lately and my solution
to that problem was to "clip" those events to a
negligible negative fraction if negative or what
appears to be the curve's normal peek, my goal
being to conserve as much details as possible.

I'm wondering how you dealt with that relatively
to the log files (the display itself already has two
customisable fields for the upper/lower limits).


I'm not sure what situation you're referring to. IM me with details please.


Bicephale

join:2005-09-24
kudos:3

Hi TerTech,

I'll make contact shortly. In the meantime, this is
a compatibility chart i built after wondering if the
log file format may allow me to playback logs from
other brands/models using 'DMT' Diagnosis mode:

.-----------------+-------------------------+-----------------------+------------------------.
|      'DSS v1.0' |             'DMT v7.35' |           'DMT v9.01' |            'DMT v2.20' |
|         Thomson |                 Thomson |               Siemens |                   GNet |
|           ST5x6 |                   ST5x6 |                SS4200 |     BB0060B/GBB2060-Xi |
+-----------------+-------------------------+-----------------------+------------------------+
|                 |      # DMT Diagnosis... |    # DMT Diagnosis... |     # DMT Diagnosis... |
|                 |      # creation date... |    # creation date... |     # creation date... |
|                 |  Tones=255 Separator=,  | Tones=255 Separator=, |  Tones=255 Separator=, |
+-----------------+-------------------------+-----------------------+------------------------+
| Time,Up Rate... |   Time,USrate,DSrate... | Time,USrate,DSrate... |  Time,USrate,DSrate... |
|         Up Rate |                  USrate |                USrate |                 USrate |
|         Up SNRM |                   USsnr |                       |                  USsnr |
|         Dn Rate |                  DSrate |                DSrate |                 DSrate |
|         Dn SNRM |                   DSsnr |                 DSsnr |                  DSsnr |
|          Rx FEC |                   rxFEC |                       |                  rxFEC |
|          Rx CRC |                   rxCRC |                 rxCRC |                  rxCRC |
|          Rx HEC |                   rxHEC |                 rxHEC |                        |
|          Tx FEC |                   txFEC |                       |                  txFEC |
|          Tx CRC |                   txCRC |                 txCRC |                  txCRC |
|          Tx HEC |                   txHEC |                 txHEC |                        |
+-----------------+-------------------------+-----------------------+------------------------+
|        Rx FEC/s |                         |                       |                        |
|        Rx CRC/s |                         |                       |                        |
|        Rx HEC/s |                         |                       |                        |
|        Tx FEC/s |                         |                       |                        |
|        Tx CRC/s |                         |                       |                        |
|        Tx HEC/s |                         |                       |                        |
|           Index |                         |                       |                        |
|             Con |                         |                       |                        |
`-----------------+-------------------------+-----------------------+------------------------'


I haven't tried anything yet and i'm not sure what
to do with the last section (N.B.: i rearanged the
sequence to render this table easier to read)... If
'DSL_StatScope v1.0' accepts log files missing the
"/s" data then long-term records averaging may be
available even for devices not directly supported!

The 'DMT' log file format allows comments and some
definitions in the header, maybe it would be a good
idea in an eventual future to exploit these features.



Bicephale

join:2005-09-24
kudos:3

reply to tertech


DMT Diagnosis Aberrations
Hi again,

About aberrations, finally it's simpler for
me just to post an illustration right here.

This graphic was generated using 'GNUmeric'
to process a log file generated by 'DMT' run
in "Diagnosis" mode. The negative values are
resulting from a disconnection (zero SNR), it
is meaningless information but those numbers
are so large everything else will vanish into
the baseline if it's not corrected manually...



Bicephale

join:2005-09-24
kudos:3

Oups! TerTech, i just realized these negative
values don't exist yet in the log files: they're
the result of calculations done later instead...

Sorry to bother!


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