docsPnmCmDsOfdmSymPlcExtTimestamp
DOCS-PNM-MIB ·
.1.3.6.1.4.1.4491.2.1.27.1.2.2.1.5
Object
column
OctetString
This attribute is the 64 bit value of the Timestamp that was sent by
the CMTS in the PLC frame containing the Trigger Message Block.
This attribute is a copy of the 64-bit DOCSIS 3.1 extended timestamp
defined in [MULPI3.1 paragraph 7.1.5, Extended Timestamp]. Bit 0 is
the LSB and bit 63 is the MSB. For this measurement, the accuracy in
reading the timestamp by the CM is expected to be 100 ms or better.
Hence for practical purposes, bits 0-20 may not be meaningful. Bit 21
provides a resolution (not accuracy) of 0.4 ms, and bit 63 has a rollover
period of approximately 112 years.
Context
- MIB
- DOCS-PNM-MIB
- OID
.1.3.6.1.4.1.4491.2.1.27.1.2.2.1.5- Type
- column
- Access
- readonly
- Status
- current
- Parent
- docsPnmCmDsOfdmSymCapEntry
- Table
- docsPnmCmDsOfdmSymCapTable
- Siblings
- 9
Syntax
OctetString
Values & Constraints
Object Constraints
range: 8-8
Related Objects
Sibling Objects
| Object | Type | Syntax | OID |
|---|---|---|---|
| docsPnmCmDsOfdmSymTrigEnable If this attribute is set to a value of 'true' the CM must begin
looking for the presence of the Trigger Message Block in the PLC with
a Group ID matching the CM's 'docsPnmCmDsOfdm… | column | SNMPv2-TCTruthValue | .1.3.6.1.4.1.4491.2.1.27.1.2.2.1.1 |
| docsPnmCmDsOfdmSymCaptFileName This attribute is the name of the file, at the CM and containing captured
symbol data, which is to be downloaded by the PNM server.
This value can only be changed w… | column | SNMP-FRAMEWORK-MIBSnmpAdminString | .1.3.6.1.4.1.4491.2.1.27.1.2.2.1.10 |
| docsPnmCmDsOfdmSymTrigEnableTimeout This attribute is used to disable the TrigEnable if no PLC
containing a Group ID matching the CM's TrigGroupId in a Trigger
Message Block is received within the timeout period. Th… | column | seconds Unsigned32 | .1.3.6.1.4.1.4491.2.1.27.1.2.2.1.2 |
| docsPnmCmDsOfdmSymTrigGroupId This attribute is used to associate a CM with a group of CMs expected
to perform Symbol Capture measurements for the designated symbol.
This value can only be chang… | column | Unsigned32 | .1.3.6.1.4.1.4491.2.1.27.1.2.2.1.3 |
| docsPnmCmDsOfdmSymRxWindowing This attribute is a flag indicating if vendor proprietary receiver
windowing was enabled during the capture. | column | SNMPv2-TCTruthValue | .1.3.6.1.4.1.4491.2.1.27.1.2.2.1.4 |
| docsPnmCmDsOfdmSymTransactionId This attribute is the Transaction ID sent by the CMTS in the Trigger
Message Block. The CMTS increments this field by one on each trigger
message that is sent, rolling over at val… | column | Unsigned32 | .1.3.6.1.4.1.4491.2.1.27.1.2.2.1.6 |
| docsPnmCmDsOfdmSymSampleRate This attribute is the FFT sample rate in use by the CM for the
channel. Typically the sample rate for the downstream channel will
be 204.8MHz. | column | Hz SNMPv2-SMIUnsigned32 | .1.3.6.1.4.1.4491.2.1.27.1.2.2.1.7 |
| docsPnmCmDsOfdmSymFftLength This attribute is the FFT length in use by the CM for the channel;
typically this value is 4096 or 8192 for the Downstream Channel. | column | Unsigned32 | .1.3.6.1.4.1.4491.2.1.27.1.2.2.1.8 |
| docsPnmCmDsOfdmSymMeasStatus This attribute is used to determine the status of the measurement.
The PNM server will query this value to determine when the file
is ready for transfer. | column | MeasStatusType | .1.3.6.1.4.1.4491.2.1.27.1.2.2.1.9 |