2. VOLUME DIRECTORY FILE FORMAT DEFINITION

TABLE 2.1 VOLUME DESCRIPTOR RECORD

FIELD  BYTES    FORMAT  DESCRIPTION                                                  CONTENT            
                                       
1      1-4      B4      Record sequence number                                            (1)                 
2      5        Bl      1-st record subtype code                                        (192)               
3      6        Bl      Record type code                                                (192)               
4      7        Bl      2-nd subtype code                                                (18)                
5      8        Bl      3-rd subtype code                                                (18)                
6      9-12     B4      Length of this record                                           (360)               
7      13-14    A2      ASCII/EBCDIC flag                                                  A$                     
8      15-16    A2      blanks                                                             $$                  
9      17-28    A12     format control document                                  CCB-CCT-0002        
10     29-30    A2      Superstructure format control document                             $E  
11     31-32    A2      Superstructure record  format revision                             $A
12     33-44    A12     Logical volume  generating  facility software release        <......>
                        and revision level
13     45-60    A16     ID of physical volume containing this volume descriptor      <......>            
14     61-76    A16     Logical volume identifier                                    <......>
15     77-92    A16     Volume set identifier                                        <......>
16     93-94    I2      Total number of physical volumes in the logical vo1ume             $1                  
17     95-96    I2      Physical volume sequence number of the first tape within the       $1                  
                        logical volume                             
18     97-98    I2      Physical volume sequence number of the last tape within the        $1                  
                        logical vo1ume                             
19     99-100   I2      Physical volume sequence number of the current tape within         $1                  
                        the logical vo1ume                         
20     101-101  I4      First referenced file number  in this physical volume            $$$1                
                        whithin the logical volume.                                      
21     105-108  I4      Logical volume within a volume set                               $$$1                
22     109-112  I4      Logical volume number within physical volume                     $$$1                
23     113-120  A8      Logical volume creation date (YYYYMMDD)                      <......>
24     121-128  A8      Logical volume creation time (hhmmssdd, dd=deci-seconds)     <......>
25     129-140  A12     Logical volume generation country                            <......>
26     141-148  A8      Logical volume generating agency                             $$$$$$$$          
27     149-160  A12     Logical volume generating facility                           <......>
28     161-164  I4      Number of file pointer records in volume directory               $$$2                
29     165-168  I4      Number of records in volume directory                            $$$4                
30     169-172  I4      Total number of logical volumes in volume set                    $$$1
31     173-260  A88     Volume descriptor spare segment (always blank filled)        <$....$>
32     261-360  AlOO    Local use segment                                            <$....$>            

TABLE 2.2 LEADER FILE POINTER RECORD

FIELD  BYTES   FORMAT  DESCRIPTION                                                   CONTENT             
                                       
1      1-4      B4      Record number                                                     (2)                 
2      5        Bl      1-st record subtype code                                        (219)               
3      6        Bl      record type code                                                (192)               
4      7        Bl      2-nd subtype code                                                (18)                
5      8        Bl      3-rd subtype code                                                (18)                
6      9-12     B4      Length of this record                                           (360)               
7      13-14    A2      ASCII/EBCDIC flag for referenced file                              A$                  
8      15-16    A2      blank                                                              $$                  
9      17-20    I4      Referenced file number                                           $$$1                
10     21-36    A16     Referenced file name                                 ERS1.SAR.SLCLEAD    
11     37-64    A28     Referenced file class                            SARLEADER$FILE$$$$$$
12     65-68    A4      Referenced file class code                                       SARL                
13     69-96    A28     Referenced file data type                      MIXED$BINARY$AND$ASCII
14     97-100   A4      Referenced file data type code                                   MBAA                
15     101-108  I8      Number of records in referenced file                <........>(max 7)             
16     109-116  I8      Referenced  file  1-st  record  length                       $$$$$720
17     117-124  I8      Referenced file maximum record length                        <......>
18     125-136  A12     Referenced file record length type                       VARIABLE$LEN        
19     137-140  A4      Referenced file record length type code                          VARE                
20     141-142  I2      Referenced file physical volume start number                       $1
21     143-144  I2      Referenced file physical volume end number                         $1
22     145-152  I8      Referenced file portion start, 1-st record number            $$$$$$$1
                        for this physical volume                                           
23     153-160  I8      Referenced file portion end, last record number     <........>(max 7)
                        for this physical volume                                           
24     161-260  AlOO    File pointer spare segment                                   <......>            
25     261-360  AlOO    Local use segment                                            <......>

TABLE 2.3 DATA FILE POINTER RECORD

FIELD  BYTES    FORMAT  DESCRIPTION                                                   CONTENT             
                                       
1      1-4      B4      Record number                                                     (3)                 
2      5        Bl      1-st record subtype code                                        (219)               
3      6        Bl      record type code                                                (192)               
4      7        Bl      2-nd subtype code                                                (18)                
5      8        Bl      3-rd subtype code                                                (18)                
6      9-12     B4      Length of this record                                           (360)               
7      13-14    A2      ASCII/EBCDIC flag for referenced file                              A$                  
8      15-16    A2      blank                                                              $$                  
9      17-20    I4      Referenced file number                                           $$$2                
10     21-36    A16     Referenced file name                                 ERS1.SAR.SLCIMGY    
11     37-64    A28     Referenced file class                            IMAGERY$0PTI0NS$FILE
12     65-68    A4      Referenced file class code                                       IMOP                
13     69-96    A28     Referenced file data type                      MIXED$BINARY$AND$ASCII
14     97-100   A4      Referenced file data type code                                   MBAA                
15     101-108  I8      Number of records in referenced file                         <......>
16     109-116  I8      Referenced  file  1-st  record  length                       $$$10012
17     117-124  I8      Referenced file maximum record length                        $$$10012
18     125-136  A12     Referenced file record length type                       FIXED$LENGTH        
19     137-140  A4      Referenced file record length type code                          FIXD                
20     141-142  I2      Referenced file physical volume start number                       $1                  
21     143-144  I2      Referenced file physical volume end number                         $1                  
22     145-152  I8      Referenced file portion start, 1-st record number            $$$$$$$1
                        for this physical volume                                           
23     153-160  I8      Referenced file portion end, last record number              <......>
                        for this physical volume                                           
24     161-260  AlOO    File pointer spare segment                                   <......>            
25     261-360  AlOO    Local use segment                                            <......>            

TABLE 2.4 TEXT RECORD

FIELD  BYTES    FORMAT  DESCRIPTION                                                   CONTENT                     
                                   
 1     1-4      B4      Record number                                                     (4)     
 2     5        Bl      1-st record sub-type code                                        (18)     
 3     6        Bl      Record type code                                                 (63)    
 4     7        Bl      2-nd record sub-type code                                        (18)     
 5     8        Bl      3-rd record sub-type code                                        (18)     
 6     9-12     B4      Length of this record                                           (360)   
 7     13-14    A2      ASCII/EBCDIC flag                                                  A$      
 8     15-16    A2      Continuation flag    (*)                                           $$
 9     17-56    A40     Product type specifier                                       <......>
10     57-116   A60     Location  and  date/time of product creation                 <......>
11     117-156  A40     Physical volumes identification                              <......>
12     157-196  A40     Scene identification                                         <......>
13     197-236  A40     Scene location                                               <......>
14     237-256  A20     spares                                                       <......>
15     257-360  A104    spares                                                       

(*) This field is set to C$ if information is continued on the next text record (if any).