Archive PYTHON 4322 Product Description Manual page 6

ARCHIVE PYTHON DDS-DC OAT DRIVES---PRODUCT DESCRIPTION MANUAL
7.2 DCLZ Algorithm . . . . . . . . . . . . .
7.2.1 Simplified Compression Operation
7.2.2 Dictionary. . . . . . . . . . . . . .
7.2.3 Simplified Decompression Operation .
7.3 AHA3101 Data Compression Chip. .
Chapter 8. Theory of Operation. .
8.1 OvelView. . . . . . . . .
8.2 Block Diagrams . . . . . .
8.3 Python DDS-DC DAT Drives
8.3.1 Helical Scan Recording -- Four-Head Design.
8.3.2 Motors and Control Circuits.
8.3.3 Flash EEPROM. .
8.3.4 Sensors . . . . . . .
8.3.5 Audio Output Jack
8.4 DAT Cassette . . . . . .
Chapter 9. Maintenance and Reliability.
9.1 Maintenance . . . . . . . . . . .
9.1.1 Head Cleaning . . . . . .
9.1.2 Automatic Drive Spin-Down and Write ..
9.1.3 Guidelines for High Temperature or Humidity Conditions.
9.2 Reliability . . . . . . . . . . . . . . .
9.2.1 Mean-Time-Between-Failure .
9.2.2 Mean-Time-To-Repair
Appendix A. Glossary of Terms . . .
Appendix B. Acronyms and Measurements . .
B.1 Abbreviations and Acronyms . . .
B.2 Measurements. . . . . . . . . . . . .
Appendix C. Data Compression---SCSI Information . . . . . .
C.1 Introduction . . . . . . . . . . . . . .
C.2 MODE SELECT Page. . . . . . . . . . . .
C.2.1 Compression Control---Byte 02 ..
C.2.2 Decompression Control---Byte 03.
C.3 MODE SENSE Page . . . . . . . . . . . .
C.3.1 Compression Control---Byte 02 ..
C.3.2 Decompression Control---Byte 03.
C.3.3 Compression Algorithm---Byte 07 .
C.3.4 Decompression Algorithm---Byte 11 .
C.4 Request Sense Data . . . . . . . . . . . .
C.5 Implementation Notes . . . . . . . . . . .
7-4
7-4
7-5
· . 7-6
7-7
8-1
8-1
8-2
. . . . . . 8-2
8-7
· . 8-8
· .. 8-10
· .. 8-10
· .8-10
.8-11
· 9-1
9-1
9-1
9-2
9-2
9-3
9-3
9-3
. . . . . A-I
· B-1
· . B-1
· . B-2
· C-l
· C-l
· . C-l
· .. C-2
· C-2
· . C-4
· .. C-S
· C-5
· . C-6
· C-6
. . . .. .. C-6
. . . . . . C-7
C.5.l Retrieval of Compressed Data from Noncompressing Modes .
· . C-7
C.S.2 SCSI Command Operation for Noncompressing Modes.
C.6 WRITE DATA BUFFER (3Bh) . . . . . . . . . . . . . . . .
C.6.l WRITE DATA BUFFER Command Descriptor Block
C.6.2 Command Descriptor Block Field Descriptions .
C.6.3 WRITE DATA BUFFER Data Header
C.6.4 Completion Status . . . . . . . . . . . . . . . .
v
· . C-9
. . . . . . . . C-lO
· .C-lO
· .. C-ll
. . . . C-ll
· .. C-l2