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Series 525 FloppyTape
Cartridge Tape Drive
Product Description
TABLE OF CONTENTS
Section Page
1 INTRODUCTION 1-1
1.1 Scope 1-1
1.2 Terminology 1-1
1.3 General Description 1-3
1.4 Features 1-3
2 SPECIFICATIONS & RELIABILITY 2-1
2.1 Tape Specifications 2-1
2.1.1 Recording Times 2-1
2.1.2 Positioning 2-1
2.2 Reliability 2-2
2.2.1 Mean Time Between Failures 2-2
2.2.2 Mean Time To Repair 2-2
2.2.3 Preventive Maintenance 2-2
2.3 Data Integrity 2-3
2.3.1 Media 2-3
2.3.2 Recoverable Read Errors 2-3
2.3.3 Non-Recoverable Read Errors 2-3
2.3.4 Power Loss 2-3
3 FUNCTIONAL CHARACTERISTICS 3-1
3.1 General Description 3-1
3.2 Read/Write & Control Electronics 3-1
3.3 Tape Drive Mechanism 3-3
3.4 Read/Write Head Positioning Mechanism 3-3
4 FUNCTIONAL DESCRIPTION 4-1
4.1 Power Sequencing 4-1
4.2 Stream Selection 4-1
4.3 Head Load/Motor On 4-2
4.4 Segment Accessing 4-2
4.5 Step Out/Step In 4-4
4.6 Read Operation 4-4
4.7 Write Operation 4-5
4.8 Recording Format 4-6
5 INTERFACE SIGNALS 5-1
5.1 Drive Interface 5-1
5.2 Interface Signal Levels 5-4
5.3 Input Control Signals 5-4
5.4 Output Control Signals 5-5
5.5 Data Line Signals 5-6
5.5.1 Read Data Signal 5-6
5.5.2 Write Data Signal 5-7
Cipher Data Products, Inc. reserves
the right to change specifications
without notice.
Copyright 1984
1
TABLE OF CONTENTS (Continued)
Section Page
6 PHYSICAL INTERFACE CONNECTION 6-1
6.1 Interface Connector Locations 6-1
6.2 Signal Connector Dimensions 6-1
6.3 Recommended Cables and Connectors 6-2
6.4 Termination 6-2
6.5 Frame Ground 6-2
7 PHYSICAL CHARACTERISTICS 7-1
7.1 Mechanical Dimensions 7-1
7.2 Weight 7-1
7.3 Mounting 7-1
8 ENVIRONMENTAL CHARACTERISTICS/POWER REQUIREM ENTS 8-1
8.1 Temperature 8-1
8.2 Humidity 8-1
8.3 Altitude 8-1
8.4 Vibration 8-1
8.5 Shock 8-1
8.6 Air Quality 8-1
8.7 Acoustical Noise 8-2
8.8 D C Power 8-2
8.9 Heat Dissipation 8-2
8.10 Cooling 8-2
9 APPLICATION NOTES 9-1
9.1 General 9-1
9.2 Hardware Considerations 9-2
9.3 Encoding Techniques 9-4
9.3.1 Single Density (FM) 9-4
9.3.2 Double Density (MFM) 9-4
9.4 Software Considerations 9-4
9.4.1 Drive Selection 9-4
9.4.2 Addressable Tracks (Segments) 9-4
9.4.3 Number of Sectors 9-S
9.4.4 Stream Formatting 9-5
9.4.5 I/O Buffering & Sector Interleaving 9-5
9.4.6 Retension Pass 9-6
9.5 Formatting 9-6
9.5.1 Format Description 9-6
9.5.2 Data Integrity 9-9
9.5.3 Format Operation 9-9
9.6 Access Timing 9-12
9.6.1 Stream To Stream 9-12
9.6.2 Segment To Segment 9-12
9.6.3 Read Reposition 9-14
2
TABLE OF CONTENTS (Continued)
APPENDIX A CONFIGURATION TABLES A-1
A.1 Jumper Options A-1
A.2 Stream Selection Tables A-1
A.3 Service Aids A-4
A.3.1 Continuous Forward/Reverse A-4
A.3.2 Stream Positioning - All Streams A-4
A.3.3 Stream Positioning - Streams 0 & 4 A-4
A.3.4 Cyclic Tape Motion A-4
APPENDIX B OPERATING PARAMETER CONSIDERATIONS B-1
B. 1 Time Outs B-1
B.2 Read After Write B-1
B.3 Reinstruct Timing B-2
B.4 Sectors/Segment Counts B-2
B.5 Stream (Drive) Selection B-2
3
LIST OF ILLUSTRATIONS
Figure Page
1-1 525 FloppyTape Drive 1-1
1-2 The Evolution of FloppyTape 1-2
3-1 525 Functional Block Diagram 3-2
3-2 Component Location Layout 3-3
3-3 Read/Write Head Assembly 3-3
4-1 525 Physical Tape Layout 4-1
4-2 525 Stream Partitioning Layout 4-2
4-3 Stream Access Flowchart 4-3
4-4 Random Segment Access Timing 4-4
4-5 Read Timing 4-5
4-6 Write Timing 4-6
5-1 525 Drive Interface - SA450 5-1
5-2 525 Drive Interface - SA850 5-2
5-3 I/O Listing 5-3
5-4 Interface Signal Driver/Receiver 5-4
5-5 Read Data Signal- FM & MFM 5-6
5-6 Write Data Signal - FM & MFM 5-7
6-1 525 Interface Connectors - SA450 6-1
6-2 J 1 Interface Connector Dimensions - SA450 6-1
6-3 J1 Interface Connector Dimensions - SA850 6-2
7-1 525 Dimensions 7-1
9-1 Typical Host System (Block Diagram) 9-1
9-2 Typical Floppy Disk Host Controller 9-2
9-3 525 Controller Example - SA450 9-3
9-4 FM vs. M FM Recording 9-5
9-5 IBM System 34 Format Example 9-8
9-6 Format Flowchart 9-10
9-7 Verification Pass Flowchart 9-10
9-8 Stream Format Timing 9-11
9-9 Head Positioning 9-12
9-10 Contiguous Segment-to-Segment Timing 9-13
9-11 Read Reposition Timing 9-14
4
SECTION 1
INTRODUCTION
1.1 SCOPE
This manual describes the electrical and mechanical
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