Table of Contents 
Specifications 
Safety 
Considerations 
Chapter 
1: 
General 
Information 
Introduction 
........................................................................ 
1-1 
General Description 
........................................ 
, 
........................ 
1-1 
Service 
Support 
Package 
............................................................ 
1-3 
Options 
............................................................................ 
1-5 
Equipment Supplied 
................................................................. 
1-5 
Accessories Available 
................................................................ 
1-6 
Installation 
......................................................................... 
1-7 
Power Requirements 
............................................................. 
1-7 
Fuses 
........................................................................... 
1-8 
Addressing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-8 
Self-Test 
....................................................................... 
1-10 
9895A Installation Procedure 
.................................................... 
1-12 
Flexible Disc 
Use 
................................................................... 
1-14 
Introduction 
................................................................... 
1-14 
Disc Loading 
................................................................... 
1-14 
Disc Handling Precautions 
...................................................... 
1-14 
Write Protect 
................................................................... 
1-15 
Operator Controls 
.................................................................. 
1-16 
Reset Caused by Line Voltage Reduction 
............................................. 
1-16 
Chapter 
2:  Theory of 
Operation 
Introduction 
........................................................................ 
2-1 
Controller Module Theory of Operation 
............................................... 
2-1 
Introduction 
..................................................................... 
2-1 
General Description 
.............................................................. 
2-1 
Controller Interface to HP-IB(PHI Chip) 
........... 
. 
............................ 
2-3 
Processor 
and 
Memory 
........................................................... 
2-3 
Read Operation 
................................................................. 
2-4 
Write Operation 
............................................................. 
"0 
••• 
2-4 
Error Detection 
.................................................................. 
2-4 
Seek Operation 
.................................................................. 
2-5