docsPnmCmUsPreEqFileName

This attribute is the name of the file at the CM which is to be
transferred to the PNM server. The data represents the current value of
the Pre-Equalization values for all of the active subcarriers and is
stored as 16 bit integers for the I and Q data.
              
This object cannot be changed while a file generation is in progress.
It will return a value of 'inconsistentValue' if set while the value of
'docsPnmCmUsPreEqMeasStatus' is set to a value of 'busy'.
              
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:
              
    PNMUsPreEq_<CM MAC address>_<epoch>
              
For example:  PNMUsPreEq_0010181A2D11_1403405123
              
The data file is comprised of a header plus the Pre-EQ 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 '504E4D06' (without the quotes)      4 bytes
 Collection Time                                       4 bytes
 Upstream Channel Id                                   1 byte
 CM MAC Address                                        6 bytes
 CMTS MAC Address                                      6 bytes
 Subcarrier zero frequency in Hz                       4 bytes
 FirstActiveSubcarrierIndex                            4 bytes
 Subcarrier spacing in Hz                              1 bytes
 Length in bytes of Pre-EQ Data that follows           4 bytes
 Pre-EQ Coefficient Update Data                        ComplexData

MIB

DOCS-PNM-MIB

OID

.1.3.6.1.4.1.4491.2.1.27.1.2.10.1.10

Type

column

Access

readwrite

Status

current

Parent

docsPnmCmUsPreEqEntry