EK60_DataEncapsulation
Entity (ENT) | Northeast Fisheries Science Center (NEFSC)GUID: gov.noaa.nmfs.inport:56972 | Updated: August 9, 2022 | Published / External
Item Identification
| Title: | EK60_DataEncapsulation |
|---|---|
| Short Name: | EK60_DataEncapsulation |
| Status: | Completed |
| Abstract: |
A standard encapsulation scheme is used for all data files. Each datagram is preceded by a 4 byte length tag stating the datagram length in bytes. An identical length tag is appended at the end of the datagram. |
Data Attributes
Attribute Summary
|
|
Name | Type | Description |
|---|---|---|---|---|
|
100
|
Length1 | Long | 4 byte length tag stating the datagram length in bytes | |
|
100
|
DatagramType | Long | The datagram type field identifies the type of datagram. ASCII quadruples are used to ease human interpretation and long term maintenance; three characters identify the datagram type and one character identifies the version of the datagram. | |
|
100
|
LowDateTime | DateTime | Structure contains a 64-bit integer value stating the number of 100 nanosecond intervals since January 1, 1601. This is the internal ”filetime” used by the Windows NT operating system. | |
|
100
|
HighDateTime | DateTime | Structure contains a 64-bit integer value stating the number of 100 nanosecond intervals since January 1, 1601. This is the internal ”filetime” used by the Windows NT operating system. | |
|
100
|
datagram content | Text | data part of the datagram contains any number of bytes, and its content is highly datagram dependent. | |
|
100
|
Length2 | Long | 4 byte length tag stating the datagram length in bytes |
Attribute Details
Length1
| Data Storage Type: | Long |
|---|---|
| Required: | No |
| Primary Key: | No |
| Status: | Active |
| Description: |
4 byte length tag stating the datagram length in bytes |
DatagramType
| Data Storage Type: | Long |
|---|---|
| Required: | No |
| Primary Key: | No |
| Status: | Active |
| Description: |
The datagram type field identifies the type of datagram. ASCII quadruples are used to ease human interpretation and long term maintenance; three characters identify the datagram type and one character identifies the version of the datagram. |
LowDateTime
| Data Storage Type: | DateTime |
|---|---|
| Required: | No |
| Primary Key: | No |
| Status: | Active |
| Description: |
Structure contains a 64-bit integer value stating the number of 100 nanosecond intervals since January 1, 1601. This is the internal ”filetime” used by the Windows NT operating system. |
HighDateTime
| Data Storage Type: | DateTime |
|---|---|
| Required: | No |
| Primary Key: | No |
| Status: | Active |
| Description: |
Structure contains a 64-bit integer value stating the number of 100 nanosecond intervals since January 1, 1601. This is the internal ”filetime” used by the Windows NT operating system. |
datagram content
| Data Storage Type: | Text |
|---|---|
| Required: | No |
| Primary Key: | No |
| Status: | Active |
| Description: |
data part of the datagram contains any number of bytes, and its content is highly datagram dependent. |
Length2
| Data Storage Type: | Long |
|---|---|
| Required: | No |
| Primary Key: | No |
| Status: | Active |
| Description: |
4 byte length tag stating the datagram length in bytes |
Catalog Details
| Catalog Item ID: | 56972 |
|---|---|
| GUID: | gov.noaa.nmfs.inport:56972 |
| Metadata Record Created By: | Patricia L Jones |
| Metadata Record Created: | 2019-07-18 14:18+0000 |
| Metadata Record Last Modified By: | SysAdmin InPortAdmin |
| Metadata Record Last Modified: | 2022-08-09 17:11+0000 |
| Metadata Record Published: | 2019-07-18 |
| Owner Org: | NEFSC |
| Metadata Publication Status: | Published Externally |
| Do Not Publish?: | N |
| Metadata Last Review Date: | 2019-07-18 |
| Metadata Review Frequency: | 1 Year |
| Metadata Next Review Date: | 2020-07-18 |