6.2 卷主记录 Header Records
There will be at least one 132-character header record for each data file. The header records contain information to uniquely identify each data file. Header record fields are considered required unless specified otherwise. Header records are identified by HDR in columns 1 through 3 of the record.
每个数据文件至少会有一个 132 字符的标题记录。标题记录包含用于唯一标识每个数据文件的信息。除非另有规定，否则标题记录字段被视为必填项。标题记录通过记录的第 1 至 3 列中的 “HDR” 来标识。
6.2.1 卷主记录1
| Column | Field Name | Field Length |
Reference |
|---|---|---|---|
| 1~3 | Header Ident | 3 | Contains “HDR” |
| 4~5 | Header Number | 2 | Contains decimal 01 to indicate this is the first Header Record. |
| 6~20 | File Name | 15 | Contains the file Name |
| 21~23 | Version Number | 3 | Contains 3 decimal numbers to uniquely identify revision of this file. Initially set to 001, but will be incremented if the file is created more than once in the same cycle. |
| 24 | Production/Test Flag | 1 | Contains “P” if this is a production data file. Contains “T” if this is a file created for test purposes. |
| 25~28 | Record Length | 4 | Contains the decimal number 0132, i.e., the number of characters in each data record. |
| 29~35 | Record Count | 7 | Contains the decimal count of the number of data records in the file. |
| 36~39 | Cycle Date | 4 | Contain Cycle Date (5.32) |
| 40~41 | Blank(Spacing) | 2 | Contain blanks |
| 42~52 | Creation Date | 11 | Contains the date when the file was created. Format is DD-MMM- YYYY. Where DD is the two-digit decimal day of month, MMM is a three-character month abbreviation, and YYYY is the four-digit decimal year. (Example: 12-APR-2002) |
| 53~60 | Creation Time | 8 | Contains the UTC tiem when the file was created. The format is two decimal digits each for hours, minutes, and seconds, separated by colons.(Example:13:12:02=1:12:02 p.m.) |
| 61 | Blank(spacing) | 1 | Contains blank |
| 62~77 | Data Supplier Ident | 16 | Contains information to identify the data supplier. Content defined by the data supplier. |
| 78~93 | Target Customer Ident | 16 | Contains information to identify the data user/customer (for example, the customer name(s), file codes). Content defined by the data supplier and/or customer. (Optional) |
| 94~113 | Database Part Ident | 20 | Unique part number for database. (Optional - Content TBD) |
| 114~124 | Reserved | 11 | Contains blanks |
| 125~132 | File CRC | 8 | File CRC: CRC Polynomial TBD. Size of data blocks to be CRCed also TDB. Note: if it is determined that multiple CRCs are required this field will become multiple fields and have to be moved to another record(s). CRC value for the ARINC data file (including data and header records). For purposes of calculating a CRC value, Header record 1, Columns 125 through 132, shall be considered to contain zeros. |
| 列 | 字段名 (字节数) |
内容说明 |
|---|---|---|
| 1~3 | 卷首标识(3) | “HDR” |
| 4~5 | 卷首类型代码(2) | 填01,用以说明这是第一种卷主记录。 |
| 6~20 | 文件名称(15) | 填文件名称 |
| 21~23 | 版本信息(3) | 用3个数字作为文件的唯一标识，从001开始, 当同 一周期生成一个以上版本时，应依次增长。 |
| 24 | 程序/测试标识(1) | 如果是飞行程序文件，填”P” 如果是用于测试目的，则填”T” |
| 25~28 | 记录字节数(4) | 填数字0132, 表示每条记录的字节数。 |
| 29~35 | 记录总量(7) | 填此文件包含的总记录条数 |
| 36~39 | 周期(4) | 填生成周期(5.32) |
| 40~41 | 空格(2) | 两个空格符 |
| 42~52 | 生产日期(11) | 填文件的生成日期，格式为DD-MMM-YYYY. 当 DD表示两位数的月份 MMM是三位数的月份简写 而YYYY是四位数的年份.(例如:12-APR-2002) |
| 53~60 | 生产时间(8) | 填文件生成的UTC时间，使用分别用两位数表示 小时、分钟、秒的格式，用：分隔. (例如: 13:12:02=1:12:02 p.m.) |
| 61 | 空格(1) | 一个空格符 |
| 62~77 | 数据供应商代码(16) | 填数据供应商信息，格式由数据供应商确 定。 |
| 78~93 | 数据供应商代码(16) | 填数据使用人/客户信息(例如，用户名称， 文件代码)。内容由数据供应商和/或客户确 定。(可选项) |
| 94~113 | 数据库分段编号(20) | 唯一的数据库分段编号(可选项-内容TBD) |
| 114~124 | 预留(11) | 包含空格 |
| 125~132 | File CRC(8) | 该字段包含 ARINC 424 数据文件（包括数 据和报头记录）的 32 位 CRC 值；ARINC 报告 665，可加载软件标准，第 4 章规定 了 CRC 代码的使用；用于计算 ARINC 424 数据文件的 CRC 多项式应为 32 位 CRC（0x04C11DB7），如 ARINC 报告 665 所述进行计算；为了计算 CRC 值，标头记 录 1 第 125 至 132 列应被包含零。 |
6.2.2 卷主记录2
| Column | Field Name | Field Length |
Reference |
|---|---|---|---|
| 1~3 | Header Ident | 3 | Contains “HDR” |
| 4~5 | Header Number | 2 | Contains decimal 02 to indicate this is the second Header Record. |
| 6~16 | Effective Date | 11 | If the Effective Date is the date associated with the Cycle Date, this field will contain blanks. If the file is created outside of standard cycles, this field will provide the effective date. The format is the same as the Creation Date. (Optional) |
| 17~27 | Expiration Date | 11 | If the Expiration Date is the date associated with the Cycle Date, this field will contain blanks. If the file is created outside of standard cycles, this field will provide the expiration date. The format is the same as the Creation Date. (Optional) |
| 28 | Blank(Spacing) | 1 | Contains blank |
| 29~58 | Supplier Text Field | 30 | Contains information specific to data supplier, contents to be defined by data supplier (For example, extract program version) (Optional) |
| 89~132 | Reserved | 43 | Contains blanks |
| 列 | 字段名 (字节数) |
内容说明 |
|---|---|---|
| 1~3 | 卷首标志(3) | “HDR” |
| 4~5 | 卷首类型代码(2) | 填02，用以说明这是第二种卷主记录 |
| 6~16 | 生效日期(11) | 生效时间与周期有关，这里就是空的。生效时间不是标准的周期，这里就应该填生效日期，格式与生成日期一致(供选项) |
| 17~27 | 失效日期(11) | 失效日期与周期有关，这里就是空的。失效日期不是标准周期，这里就应该填失效日期，格式与生成日期一致(供选项) |
| 28 | 留白(1) | 使用空格符 |
| 29~58 | 供应商信息(30) | 填写数据供应商信息，由数据供应商自行 确定内容. (例如,版本信息) (可选项) |
| 59~88 | 文件内容说明(30) | 填写文件内容说明信息,或其他数据供应 商协定内容(例如,文件内容说明, 测试文件 备注等等). (可选项) |
| 89~132 | 预留(43) | 使用空格符 |
6.2.3 附加 Additional Header Records
Additional Header Records may be added.
可以添加额外的标头记录。
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本文采用 署名-非商业性使用-相同方式共享 4.0 国际 许可协议，转载请注明出处。
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