This attribute is the name of the file at the CCAP which is to be transferred to the PNM server. The data is stored as 32 bit integers for the hit and dwell count values. This value can only be changed while a test is not in progress. An attempt to set this value while the value of 'docsPnmCmtsUsHistMeasStatus' is 'busy' will return 'inconsistentValue'. If the value of this attribute 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 is generated, then that value will be returned in this attribute and will represent the filename that was used for the test. All subsequent tests should set this attribute to a meaningful value or to an 'empty string' value (to generate a new default filename) before starting a new test. If a default filename value is used, it is generated as the test name plus a unique CCAP identifier (either a loopback address (IPv4 or IPv6) or FQDN), current timestamp (with colons replaced with periods) and the ifIndex of the interface on which the test runs. The timestamp is formatted as shown below: <Year:4d>-<Month:2d>-<Day:2d>_<Hour:2d>.<Minute:2d>.<Second:2d>.<Millisecond:3d> Hence, the format would be: PNMCcapHist_<Unique CCAP Identifier>_<Timestamp>_<ifIndex> For example: PNMCcapHist_ccap1.boulder.cablelabs.com_2018-06-26_10.50.14.451_24935767 The data file is comprised of a header plus the Histogram 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. The file type is either '504E4D68' or '504E4E68' (with Versioning)