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.PRILEAD
11 37-64 A28 Referenced file class SARLEADER$FILE$$$$$$
12 65-68 A4 Referenced file class code SARL
13 69-96 A28 Referenced file data type MIXED$BINARY$AND$ASCII
14 97-100 A4 Referenced file data type code MBAA
15 101-108 I8 Number of records in referenced file <........> (max 8)
16 109-116 I8 Referenced file 1-st record length $$$$720
17 117-124 I8 Referenced file maximum record length <......>
18 125-136 A12 Referenced file record length type VARIABLE$LEN
19 137-140 A4 Referenced file record length type code VARE
20 141-142 I2 Referenced file physical volume start number $1
21 143-144 I2 Referenced file physical volume end number $1
22 145-152 I8 Referenced file portion start, $$$$$$$1
1-st record number for this physical volume
23 153-160 I8 Referenced file portion end, last record number <........>
for this physical volume (max 8)
24 161-260 AlOO File pointer spare segment <......>
25 261-360 AlOO Local use segment <......>
TABLE 2.3 DATA FILE POINTER RECORD
FIELD BYTES FORMAT DESCRIPTION CONTENT
1 1-4 B4 Record number (3)
2 5 Bl 1-st record subtype code (219)
3 6 Bl record type code (192)
4 7 Bl 2-nd subtype code (18)
5 8 B1 3-rd subtype code (18)
6 9-12 B4 Length of this record (360)
7 13-14 A2 ASCII/EBCDIC flag for referenced file A$
8 15-16 A2 blank $$
9 17-20 I4 Referenced file number $$$2
10 21-36 A16 Referenced file name ERS1.SAR.PRIIMGY
11 37-64 A28 Referenced file class IMAGERY$0PTI0NS$FILE
12 65-68 A4 Referenced file class code IMOP
13 69-96 A28 Referenced file data type IXED$BINARY$AND$ASCII
14 97-100 A4 Referenced file data type code MBAA
15 101-108 I8 Number of records in referenced file <......>
16 109-116 I8 Referenced file 1-st record length $$$16012
17 117-124 I8 Referenced file maximum record length $$$16012
18 125-136 A12 Referenced file record length type FIXED$LENGTH
19 137-140 A4 Referenced file record length type code FIXD
20 141-142 I2 Referenced file physical volume start number $1
21 143-144 I2 Referenced file physical volume end number $1
22 145-152 I8 Referenced file portion start, 1-st record number $$$$$$$1
for this physical volume
23 153-160 I8 Referenced file portion end, last record number <......>
for this physical volume
24 161-260 AlOO File pointer spare segment <......>
25 261-360 AlOO Local use segment <......>
TABLE 2.4 TEXT RECORD
FIELD BYTES FORMAT DESCRIPTION CONTENT
1 1-4 B4 Record number (4)
2 5 Bl 1-st record sub-type code (18)
3 6 Bl Record type code (63)
4 7 Bl 2-nd record sub-type code (18)
5 8 Bl 3-rd record sub-type code (18)
6 9-12 B4 Length of this record (360)
7 13-14 A2 ASCII/EBCDIC flag A$
8 15-16 A2 Continuation flag (*) $$
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).