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        B1      1-st record subtype code                                    (192)   
3      6        B1      Record type code                                            (192)   
4      7        B1      2-nd subtype code                                            (18)    
5      8        B1      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                                                         $$      
9      17-28    A12     format control document                               CB-CCT-0002
10     29-30    A2      Superstructure format control document                         $E      
11     31-32    A2      Superstructure record  format revision                         $A      
12     33-44    A12     Logical volume  generating  facility software release     <.....>
                        and revision level
13     45-60    A16     ID of physical volume containing this volume descriptor   <.....>
14     61-76    A16     Logical volume identifier                                 <.....>
15     77-92    A16     Volume set identifier                                     <.....>
16     93-94    I2      Total number of physical volumes in the logical vo1ume         $1    
17     95-96    I2      Physical volume sequence number of the first tape within the   $1 
                        logical volume
18     97-98    I2      Physical volume sequence number of the last tape within the    $1 
                        logical vo1ume
19     99-100   I2      Physical volume sequence number of the current tape within     $1 
                        the logical vo1ume 
20     101-101  I4      First referenced file number  in this physical volume        $$$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.RAWLEAD
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
                       1-st record number for this physical volume  
23     153-160 I8      Referenced file portion end, last record number         <........>
                       for this physical volume                                   (max 7)
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       B1      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.RAWIMGY
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                    $$$11644 
17     117-124 I8      Referenced file maximum record length                     $$$11644
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                      $2  
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).