docsPnmCmDsOfdmSymCaptFileName
DOCS-PNM-MIB ·
.1.3.6.1.4.1.4491.2.1.27.1.2.2.1.10
Object
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 while a test is not in progress. An attempt
to set this value while the value of 'docsPnmCmDsOfdmSymMeasStatus' is
'busy' will return 'inconsistentValue'.
If the value of this object is the DEFVAL (empty string), then a default
filename value will be used. Otherwise the value set will be used as
the filename.
If a default filename value is used, it is generated as the test name
plus the CM MAC Address plus the 'epoch time'. The epoch time (also known
as 'unix time') is defined as the number of seconds that have elapsed
since midnight Coordinated Universal Time (UTC), Thursday, 1 January 1970.
Hence, the format would be:
PNMSymCap_<CM MAC address>_<epoch>
For example: PNMSymCap_0010181A2D11_1403405123
The data file is comprised of a header plus the Symbol Capture Data.
The header is comprised of ordered fixed-length fields. Unless
otherwise specified, the header fields contain hex values that are
right-justified within the field. If necessary, the field is left-padded
with zero values.
Syntax of the file is as follows:
File Type set to '504E4D01' (without the quotes) 4 bytes
Capture Time 4 bytes
DS Channel Id 1 byte
CM MAC Address 6 bytes
Subcarrier zero Frequency in Hz 4 bytes
PlcExtendedTimeStamp 8 bytes
SampleRate in Hz 4 bytes
FFT Size 4 bytes
TriggerGroupId 2 bytes
Transaction ID 1 byte
Length in bytes of Capture Data that follows 4 bytes
Symbol Capture Data ComplexData
Context
- MIB
- DOCS-PNM-MIB
- OID
.1.3.6.1.4.1.4491.2.1.27.1.2.2.1.10- Type
- column
- Access
- readwrite
- Status
- current
- Parent
- docsPnmCmDsOfdmSymCapEntry
- Table
- docsPnmCmDsOfdmSymCapTable
- Siblings
- 9
Syntax
SNMP-FRAMEWORK-MIBSnmpAdminString
- Source
- SNMP-FRAMEWORK-MIBSnmpAdminString
- Base type
OctetString
Values & Constraints
Type Constraints
range: 0..255
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 |
| 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 |
| docsPnmCmDsOfdmSymPlcExtTimestamp 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… | column | OctetString | .1.3.6.1.4.1.4491.2.1.27.1.2.2.1.5 |
| 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 |