ARRIS-CMTS-FFT-MIB Table View

Table-centric layout grouping table, row, and column objects.

Standard view Table view
Tables
2
Rows
2
Columns
18

dcxFftUpstreamChannelTable

table
.1.3.6.1.4.1.4115.1.4.5.1.1.1 · 1 row entry · 16 columns
Open in standard view 
Arris CMTS FFT upstream channel configuration table. An entry in this table
exists for each ifEntry with an ifType of docsCableUpstreamInterface (129)
that supports FFT collection and reporting.
dcxFftUpstreamChannelEntry entry .1.3.6.1.4.1.4115.1.4.5.1.1.1.1
Arris FFT upstream channel entry.
Indexes
IF-MIBifIndex
Column Syntax OID
dcxFftSize
Number of samples to be collected for FFT. Valid
values are 256, 512, 1024, 2048, 4096. The FFT payload size
will be the number of samples multiplied by the number
of bytes per sample as determined by dcxFftOutputFormat…
Unsigned32r/w
Constraints:
range: 256-256
range: 512-512
range: 1024-1024
range: 2048-2048
range: 4096-4096
 .1.3.6.1.4.1.4115.1.4.5.1.1.1.1.1
dcxFftSampleRate
FFT sample rate based on the input source to the FFT. The input to the FFT
can be the ADC output, the ADC output followed by a down-mixer and half-band
filter, the ADC output followed by a down-mixer and quarter-band fi…
Enumerationr/w
Enumerated Values:
1adcRate
2halfAdcRate
3quarterAdcRate
4quadrupleSymbolRate
5reserved5
6reserved6
7reserved7
8reserved8
 .1.3.6.1.4.1.4115.1.4.5.1.1.1.1.2
dcxFftCentreFrequency
FFT centre frequency. This object is used only if dcxFftSampleRate is set
to halfAdcRate or quarterAdcRate to set the down-mixer frequency.
hertzInteger32r/w
Constraints:
range: -81920000-81920000
 .1.3.6.1.4.1.4115.1.4.5.1.1.1.1.3
dcxFftWindowing
Set the frequency-domain windowing filter.
Enumerationr/w
Enumerated Values:
1rectangular
2hanning
3hamming
4blackman
5blackmanHarris
 .1.3.6.1.4.1.4115.1.4.5.1.1.1.1.4
dcxFftLogAveragingTimeConstant
Time averaging constant exponent, M. Constant is
2^M. Setting this object to zero disables averaging.
Unsigned32r/w
Constraints:
range: 0-7
 .1.3.6.1.4.1.4115.1.4.5.1.1.1.1.5
dcxFftOutputFormat
FFT processor output format. Format can be i. raw complex
time-domain I/Q format ii. FFT data in I/Q format iii. FFT
data in power format iv. FFT data in amplitude format. The
sample sizes are 4 bytes (i. - iii.) and 2…
Enumerationr/w
Enumerated Values:
1raw
2fftIQ
3fftPower
4fftAmplitude
 .1.3.6.1.4.1.4115.1.4.5.1.1.1.1.6
dcxFftOperatingMode
Operating mode of FFT process. Determines whether
the FFT measurement takes place while no CMs are
transmitting (measuring noise floor), during a CM
burst, or by periodically sampling the spectrum
without regard to sch…
Enumerationr/w
Enumerated Values:
1baseSpectrum
2burstSpectrum
3periodicSpectrum
 .1.3.6.1.4.1.4115.1.4.5.1.1.1.1.7
dcxFftIdleInterval
Interval in microseconds between consecutive FFT
triggers when dcxFftOperatingMode is baseSpectrum
or periodicSpectrum. This object is not used if
dcxFftOperatingMode is set to burstSpectrum or if
dcxFftTriggerCount is …
SNMPv2-SMIUnsigned32r/w
Textual Convention: SNMPv2-SMIUnsigned32 Unsigned32
Type Constraints:
range: 0..4294967295
 .1.3.6.1.4.1.4115.1.4.5.1.1.1.1.8
dcxFftBurstSid
SID on which to trigger the FFT process. This
object is used only if dcxFftOperatingMode is set
to burstSpectrum.
Unsigned32r/w
Constraints:
range: 0-16383
 .1.3.6.1.4.1.4115.1.4.5.1.1.1.1.9
dcxFftBurstIUC
IUC type on which to trigger the FFT process. This
object is used only if dcxFftOperatingMode is set
to burstSpectrum or periodicSpectrum. A value of 0
means trigger on any IUC type.
Integer32r/w
Constraints:
range: 0-15
 .1.3.6.1.4.1.4115.1.4.5.1.1.1.1.10
dcxFftLogicalChannel
Logical channel on which to trigger the FFT process.
This object is used only if dcxFftOperatingMode is
set to periodicSpectrum. A value of -1 means trigger
on any logical channel.
Integer32r/w
Constraints:
range: -1-3
 .1.3.6.1.4.1.4115.1.4.5.1.1.1.1.11
dcxFftTriggerCount
Number of times to trigger FFT when dcxFftEnable and
dcxFftApplyConfig are set to true. Set this object to
zero to trigger FFT continuously.
SNMPv2-SMIUnsigned32r/w
Textual Convention: SNMPv2-SMIUnsigned32 Unsigned32
Type Constraints:
range: 0..4294967295
 .1.3.6.1.4.1.4115.1.4.5.1.1.1.1.12
dcxFftEnable
Set to true to enable FFT on this channel. Set to false to
disable. Setting will take effect when dcxFftApplyConfig is
set to true
SNMPv2-TCTruthValuer/w
Textual Convention: SNMPv2-TCTruthValue Enumeration
Type Values:
1true
2false
 .1.3.6.1.4.1.4115.1.4.5.1.1.1.1.13
dcxFftApplyConfig
Set to true to trigger an FFT process with configuration
determined by the other objects in this group. An SNMP GET
of this object will always return false
SNMPv2-TCTruthValuer/w
Textual Convention: SNMPv2-TCTruthValue Enumeration
Type Values:
1true
2false
 .1.3.6.1.4.1.4115.1.4.5.1.1.1.1.14
dcxFftInProgress
This object will return true if an FFT process is currently
in progress (having been started by a SET to dcxFftApplyConfig)
for this upstream channel. Returns false otherwise
SNMPv2-TCTruthValue
Textual Convention: SNMPv2-TCTruthValue Enumeration
Type Values:
1true
2false
 .1.3.6.1.4.1.4115.1.4.5.1.1.1.1.15
dcxFftCurrentTriggers
Number of FFT triggers since the last FFT process was
started.
SNMPv2-SMIUnsigned32
Textual Convention: SNMPv2-SMIUnsigned32 Unsigned32
Type Constraints:
range: 0..4294967295
 .1.3.6.1.4.1.4115.1.4.5.1.1.1.1.16

dcxFftPayloadTable

table
.1.3.6.1.4.1.4115.1.4.5.1.1.2 · 1 row entry · 2 columns
Open in standard view 
Arris CMTS FFT upstream channel payload table.
dcxFftPayloadEntry entry .1.3.6.1.4.1.4115.1.4.5.1.1.2.1
Arris CMTS FFT upstream channel payload entry. Multiple entries in this
table exist for each ifEntry with an ifType of
docsCableUpstreamInterface (129) that supports the FFT collection and
currently has FFT data to re…
Indexes
IF-MIBifIndex dcxFftPayloadIndex
Column Syntax OID
dcxFftPayloadIndex
An identifier for the 256-byte buffer available
at the dcxFftPayloadData object.
SNMPv2-SMIUnsigned32
Textual Convention: SNMPv2-SMIUnsigned32 Unsigned32
Type Constraints:
range: 0..4294967295
 .1.3.6.1.4.1.4115.1.4.5.1.1.2.1.1
dcxFftPayloadData
The FFT payload data in the buffer identified by
dcxFftPayloadIndex.
DcxFftPayloadBuffer
Textual Convention: DcxFftPayloadBuffer OctetString
Type Constraints:
range: 0..256
 .1.3.6.1.4.1.4115.1.4.5.1.1.2.1.2