Fluke 9000A-Z80 Interface
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Model:
9000A-Z80
Date:
1981
Category:
Group:
Description:
Interface Pod
Information
PURPOSE OF Interface POD
The purpose of the 9000A-Z80 Interface Pod, hereafter
referred to as the pod, is to Interface any 9000 Series
Micro System Troubleshooter to a piece of equipment
employing a Z80 microprocessor.
The 9000 Series Micro System Troubleshooters are designed to
service printed circuit boards, instruments and systems
employing bus-oriented microprocessors. While the
architecture of the troubleshooter main frame is general in
nature and is designed to accomodate processors with up to
32 address lines and 32 data lines, the Interface pod adapts
the general purpose architecture of the 9000 Series to a
specific microprocessor, or microprocessor family. The
Interface pod adapts the 9000 Series to
microprocessor-specific functions such as pin layout,
status/control functions, interrupt handling, timing, size
of memory space, and size of I/O space.
DESCRIPTION OF Interface POD
The pod consists of a pair of printed circuit board
assemblies mounted within a small break-resistant case. A
shielded 24-conductor cable connects the printed circuit
boards to the troubleshooter; a ribbon cable and connector
provide connection to the unit under test, hereafter
referred to as the UUT.
Figure I-I shows the relationship of the pod to the
troubleshooter and to the UUT. Connection from the pod to
the troubleshooter is via a front-mounted 25-pin connector.
Connection to the UUT is made by plugging the ribbon cable
plug directly into the microprocessor socket. The UUT
microprocessor socket gives the troubleshooter direct access
to all system components which normally communicate with the
microprocessor.
The pod contains a Z80 microprocessor and the supporting
hardware and control Software required to:
• Receive and execute commands from the troubleshooter
• Report UUT status to the troubleshooter
• Emulate the UUT microprocessor
The pod is powered by the troubleshooter, but is clocked by
the UUT clock signal. Using the UUT clock signal allows the
troubleshooter and pod to operate at the designed operating
speed of the UUT.
Logic level detection circuits are provided on each line to
the UUT. These circuits allow detection of bus shorts,
stuck-high or stuck-low conditions, and any bus drive
conflict (two or more drivers attempting to drive the same
bus line).
Over-voltage protection circuits are also provided on each
line to the UUT. These circuits guard against pod damage
which could result from:
• Incorrectly inserting the ribbon cable plug in the UUT
microprocessor socket.
• UUT faults which place potentially damaging voltages on
the UUT microprocessor socket.
The over-voltage protection circuits guard against voltages
of+12 to -7 volts on any one pin. Multiple faults,
especially of long duration, may cause pod damage.
A power level sensing circuit constantly monitors the
voltage level of the UUT Power supply (+5V). If UUT power
rises above or drops below an acceptable level, the pod
notifies the troubleshooter of the power fail condition.
A self test socket provided on the pod enables the
troubleshooter to check pod operation. The self test socket
is a 40-pin zero-insertion force type connector. The ribbon
cable plug must be connected to the self test socket during
self test operation. The ribbon cable plug should also be
inserted into this socket when the pod is not in use to
provide protection for the plug.
Manual type:
Service and User Manual
Pages:
61
Size:
7.70 Mbytes (8071353 Bytes)
Language:
english
Revision:
Manual ID:
613794
Date:
1981 06 01
Quality:
Scanned document, all readable.
Upload date:
2018 01 28
MD5:
a52bfee35e5b0b37cc99134c60cca5d1
Downloads:
521
Information
Instruction Manual
1 INTRODUCTION ... 1-1
1-1. PURPOSE OF Interface POD ... 1-1
1-2. DESCRIPTION OF Interface POD ... 1-1
1-3. SPECIFICATIONS ... 1-2
2 INSTALLATION ... 2-1
2-1. GENERAL ... 2-1
2-2. MAKING CONNECTIONS ... 2-1
2-3. POWER CONNECTIONS ... 2-2
3 MICROPROCESSOR DATA ... 3-1
3-1. INTRODUCTION ... 3-1
3-2. Z80 SIGNALS ... 3-1
3-3. STATUS/CONTROL LINES
AND ADDRESS SPACE ASSIGNMENT ... 3-1
3-4. Introduction ... 3-4
3-5. Bit Assignment - Status Lines ... 3-4
3-6. User-Writeable Control Lines ... 3-4
3-7. Bit Assignment - Control Lines ... 3-5
3-8. Address Space Assignment ... 3-5
3-9. FORCING AND INTERRUPT LINES ... 3-6
3-10. LINES ENABLED DURING TROUBLESHOOTER
SETUP ... 3-6
3-11. NON-DETECTABLE Z80 SIGNALS ... 3-7
3-12. MARGINAL UUT PROBLEMS ... 3-7
3-13. Introduction ... 3^7
3-14. UUT Operating Speed and Memory Access ... 3-7
3-15. UUT Noise Levels ... 3-7
3-16. Bus Loading ... 3-7
3-17. Clock Loading ... 3-7
3-18. POD DRIVE CAPABILITY ... 3-8
3-19. POWER FAILURE DETECTION LIMITS ... 3-8
4 THEORY OF OPERATION ... 4-1
4-I.
INTRODUCTION ... 4-I
4-2. GENERAL POD
OPERATION ... 4-1
4-3. Processor
Section ... 4-1
4-4. UUT Interface Section
... 4-4
4-5. Timing Section
... 4-4
4-6. UUT Power Sensing
... 4-5
4-7. DETAILED BLOCK DIAGRAM DESCRIPTION ... 4-5
4-8. Processor
Section ... 4-5
4-9. UUT Interface Section -
General ... 4-8
4-10. UUT Interface Section - Data
Lines ... 4-9
4-11. UUT Interface Section - Address Lines
... 4-12
4-13. Timing Section
... 4-12
5 MAINTENANCE ... 5-1
5-1. INTRODUCTION ... 5-1
5-2. SELF TEST ... 5-1
5-3. REPAIR PRECAUTIONS ... 5-2
5-4. TROUBLESHOOTING ... 5-3
5-5. Introduction ... 5-3
5-6. Pod Defective or Inoperative? ... 5-6
5-7. Selecting a UUT for Pod Testing ... 5-6
5-8. Troubleshooting a Defective Pod ... 5-7
5-13. Troubleshooting an Inoperative Pod ... 5-11
5-14. DISASSEMBLY ... 5-15
6 LIST OF REPLACEABLE PARTS ... 6-1
6-1. INTRODUCTION ... 6-1
6-2. HOW TO OBTAIN PARTS ... 6-1
7 SCHEMATIC DIAGRAMS ... 7-1