docsPnmCmDsConstDispFileName

DOCS-PNM-MIB · .1.3.6.1.4.1.4491.2.1.27.1.2.4.1.6
MIB view Table view

Object

column r/w SNMP-FRAMEWORK-MIBSnmpAdminString 
This attribute is the name of the file at the CM which is to be
transferred to the PNM server. The data is stored as 16 bit integers
for the I and Q data.
              
This value can only be changed while a test is not in progress. An attempt
to set this value while the value of 'docsPnmCmDsConstDispMeasStatus' 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:
              
    PNMDSConDisp_<CM MAC address>_<epoch>
              
For example:  PNMDSConDisp_0010181A2D11_1403405123
              
The data file is comprised of a header plus the Constellation Display
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 '504E4D03' (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
 Actual Modulation Order (DsOfdmModulationType enum)   2 bytes
 NumSampleSymbols                                      1 byte
 Subcarrier Spacing in kHz                             1 byte
 Length in bytes of Constellation Data that follows    4 bytes
 Constellation Display Data                            ComplexData

Context

MIB
DOCS-PNM-MIB
OID
.1.3.6.1.4.1.4491.2.1.27.1.2.4.1.6
Type
column
Access
readwrite
Status
current
Parent
docsPnmCmDsConstDispMeasEntry
Table
docsPnmCmDsConstDispMeasTable
Siblings
5

Syntax

SNMP-FRAMEWORK-MIBSnmpAdminString
Source
SNMP-FRAMEWORK-MIBSnmpAdminString
Base type
OctetString

Values & Constraints

Type Constraints
range: 0..255

Related Objects

Sibling Objects
ObjectTypeSyntaxOID
docsPnmCmDsConstDispTrigEnable
Setting this object to a value of 'true' instructs the CM to begin collection and storing the constellation points into the file specified by the 'docsPnmCmDsConstDispFileName' ob…
columnSNMPv2-TCTruthValue.1.3.6.1.4.1.4491.2.1.27.1.2.4.1.1
docsPnmCmDsConstDispModOrderOffset
This attribute specifies an offset from the lowest order modulation for the data subcarriers in any of the profiles in the downstream channel. If the lowest order modulation order…
columnUnsigned32.1.3.6.1.4.1.4491.2.1.27.1.2.4.1.2
docsPnmCmDsConstDispNumSampleSymb
This attribute tells the CM how many OFDM symbols including the cyclic prefix, for which soft decision samples of the specified modulation order are captured. This …
columnUnsigned32.1.3.6.1.4.1.4491.2.1.27.1.2.4.1.3
docsPnmCmDsConstDispSelModOrder
This object provides the actual Modulation Order that will be used for the Constellation display based on the selected ModulationOrderOffset.
columnDOCS-IF31-MIBDsOfdmModulationType.1.3.6.1.4.1.4491.2.1.27.1.2.4.1.4
docsPnmCmDsConstDispMeasStatus
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.
columnMeasStatusType.1.3.6.1.4.1.4491.2.1.27.1.2.4.1.5