Fluke 9000A-Z80QT, Instruction Manual

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ZBOQT
The pod
contains
a
280 microprocessor
and supporting hardware and control
software required to
do the following:
Perform handshaking
with the mainframe
Receive and execute commands from the mainframe
Report
UUT status to the
mainframe
Emulate the UUT microprocessor
The pod is
powered by the
mainframe, but
is
clocked by the UUT clock signal.
Using the UUT clock signal allows the mainframe 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:
O
Incorrectly inserting the
ribbon
cable plug in the UUT microprocessor
socket.
O
UUT faults that
place
potentially
damaging voltages on the UUT
microprocessor socket.
The over-voltage protection circuits guard
against voltages
of
+12 to -7V 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 mainframe
of
the power fail condition.
A self test socket
provided
on the
pod
enables
the
mainframe 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.
1-3. SPECIFICATIONS
Specifications
for the
9000A-Z80QT Interface Pod are listed in Table
1-1.
1-2