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Page 2

Document
UM-05143-0
User
Manual
for
DT2814
IBM
PC/XT/AT
A/D
CONVERTER
COMPATIBLE
BOARD
Copyright©
Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com
1985
Data
Marlborough,
by
Translation,
100
Locke
Data
MA
Translation,
Inc.
Drive
01752-1192
Inc.
Page 3

All
may
rights
be
transmitted,
mechanical,
otherwise,
Data
Translation,
reserved.
reproduced,
in
by
without
any
No
stored
form
photocopying,
the
prior
Inc.
part
in
by
of
a
any
written
this
retrieval
means,
recording,
publication
system,
electronic,
permission
or
or
of
Information
believed
responsibility
for
its
use;
other
its
rights
use.
otherwise
Translation,
furnished
to
be
nor
of
No
under
Inc.
First
October,
October,
accurate
is
assumed
for
third
license
any
Edition
1985
by
Data
by
any
infringements
parties
is
patent
1985
Printing
Translation,
and
reliable;
Data
which
granted
however,
Translation,
of
may
result
by
implication
rights
Inc.
patents
of
is
no
Inc.
or
from
or
Data
BASIC
IBM
PC,
is
IBM
International
DT2814
Data
is
Translation
Translation,
Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com
a
trademark
PC/XT,
a
trademark
Inc.
and
Business
is
of
Dartmouth
IBM
Machines
of
a
registered
PC/AT
Data
College.
are
Corporation.
Translation,
trademark
trademarks
Inc.
of
of
Data
Page 4

PREFACE
CONTENTS
CHAPTER
CHAPTER
CHAPTER
1
1.1
1.2
2
2.1
2.2
2.3
2.4
2.5
2.6
2.7
2.8
3
3.1
3.2
3.2.1
3.2.2
3.3
3.3.1
3.3.2
3.3.3
3.
3.
3.4
INTRODUCTION
OVERVIEW
ACCESSORIES . . . . •
. . • . . • .
• • • •
SPECIFICATIONS
~NTRODUCTION
ANALOG
ON-BOARD
INPUTS . . . . . • • •
CLOCK
INTERFACE CHARACTERISTICS
POWER
REQUIREMENTS . • . .
. • • . •
. . . .
. . . . . . . . . .
. . . . . . . . . .
. . . . . . . . . .
. . . . . .
PHYSICAL/ENVIRONMENTAL . . . . . . . .
CONNECTORS
COMPATIBLE
UNPACKING
AND
CABLES
SCREW
AND
TERMINAL
CONFIGURATION
. . • . • • • .
PANELS
INTRODUCTION . . . . . . • • . • • . •
UNPACKING
NO
APPARENT
VISIBLE
. . . . . . . . . . . . . .
DAMAGE
DAMAGE
. • • . . • • . • • . . . . .
. . . . • . • • . •
CONFIGURATION . . . . . . . . . . . .
4
BASE
INPUT
CLOCK
INTERRUPT LEVEL . • • .
JUMPER
ADDRESS SELECTION . . . • . . . .
RANGES
BASE
. . . • • . . . . • • . • .
FREQUENCY
SELECTION . • • . . . .
...••....•
SUMMARY
• • . . . . • . . . • • . .
• • • •
. . . .
. . . . .
1-1
1-1
2-1
2-1
2-3
2-4
2-5
2-5
2-5
2-6
3-1
3-1
3-1
3-2
3-4
3-4
3-5
3-6
3-7
3-7
CHAPTER 4
4.1
4.2
4.3
4.4
4.5
CHAPTER 5
5.1
5.2
5.2.1
5.2.2
5.2.3
5.3
5.3.1
5.3.2
INTERCONNECTIONS
INTRODUCTION . . . . • • • • . •
CONNECTION
USER
CONNECTION . . . . . • . .
CONNECTIONS
SINGLE-ENDED
ARCHITECTURE
TO
IBM
TO
SCREW
CONNECTION
AND
OPERATION
PC
BACKPLANE
TERMINAL
SCHEME
. . .
PANELS
. • • .
. . . . .
. • . . .
. . . . .
. . . . .
. . . .
INTRODUCTION . • . • • • . • • • • . • • • . •
ARCHITECTURE . . . • • . . • . . . • • . . • •
CONTROL
STATUS REGISTER (BASE +
A/D
REGISTER (BASE +
DATA
REGISTER (BASE +
0;
0,
1;
WRITE
READ
READ
ONLY)
ONLY)
ONLY)
••.•
.•..•
....
OPERATION . . . . . . . • . • . . • • • . • . . .
INITIALIZATION
A/D
CONVERSION . . . . • . . . • . • • .
Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com
. . . • . • . • . . • . .
iii
4-1
4-1
·4-
4-4
4-6
5-1
5-l
5-2
5-4
5-6
5-7
5-7
5-7
3
Page 5

5.3.3
PROGRAMING
SEQUENCE
..
. . . . . .
5-8
CHAPTER 6
6.1
6.2
6.2.1
6.2.2
6.2.3
6.2.4
6.3
6.3.1
6.3.2
6.3.3
6.3.4
6.3.5
6.3.6
CHAPTER 7
7.1
7
.1.1
7.1.2
APPENDIX A
CALIBRATION
INTRODUCTION • . . • • . • • • . • . • • • . • • •
GUIDELINES • • • • • • • . • • • • • • • •
ASSUMPTIONS • . • • • . • • • • • •
EQUIPMENT REQUIRED • . • • • • . • • • • • •
PRECAUTIONS . • . • • • • • • • • • • • • •
INTERCONNECTIONS • • . • • . • • • . • •
CALIBRATION
PROCEDURE
• • • . • • • . • .
UNIPOLAR OFFSET ADJUST • . • • • • • • • • •
UNIPOLAR GAIN ADJUST (FULL SCALE)
BIPOLAR OFFSET ADJUST
BIPOLAR GAIN ADJUST
BIPOLAR OFFSET ADJUST
BIPOLAR GAIN ADJUST
EXAMPLE
PROGRAMS
(+/-5V
(+/-5V
(+/-2.5V
(+/-2.5V
RANGE)
INTRODUCTION • .
EXAMPLE
EXAMPLE
BOARD
PROGRAM
PROGRAM
ASSEMBLY
1
2
DRAWING
RANGE)
RANGE)
RANGE)
.••••
• • . •
••.••••
.••..
. • . •
. . . . .
. . . . . . .
. . . . . .
6-1
6-1
6-1
6-2
6-2
6-2
6-2
6-3
6-3
6-3
6-4
6-4
6-4
7-1
7-1
7-3
INDEX
iv
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Page 6

FIGURES
3-1
4-1
4-2
4-3
5-1
5-2
5-3
6-1
BASE ADDRESS
CONNECTION
TRANSLATION
CONDITIONING PANELS . . . . . . . • . . . .
CONNECTION
SCREW
SINGLE-ENDED CONNECTION
CONTROL
STATUS REGISTER . . . .
A/D
CONNECTION
TERMINAL
REGISTER • .
DATA
SELECTION
OF
THE
DT2814
SCREW
OF
REGISTER . . .
OF
TERMINAL/SIGNAL
THE
DT2814
PANEL
A
VOLTMETER
OF
220H
TO
TO
. • . • . . . . •
SCHEME
TO
. • . .
SOME
THE
THE
DATA
DT70-1-20
. . . .
DT2814
3-5
4-5
4-5
4-7
5-2
5-4
S-6
6-2
v
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Page 7

TABLES
3-1
3-2
3-3
3-4
4-1
4-2
5-1
5-2
5-3
6-1
6-2
SELECTION
BASE
FREQUENCIES
SELECTION
DT2814
P1
PIN
J1
PIN
OF
THE
INPUT
OF
OF
THE
INTERRUPT
JUMPER
SUMMARY
ASSIGNMENTS
ASSIGNMENTS
RANGE
THE
ON-BOARD
. . . . . . .
CLOCK
REQUEST
LEVEL
. .
. . . . . . . . . .
. .
...••.
4-2,
. . . . . . . . . . . .
DT2814 REGISTERS . • . . . . . . . .
SOFTWARE
A/D
CHANNEL
DATA
DATA
SELECTED
CODING
CODING
CLOCK
FREQUENCIES
SELECTION . . . . . . . .
VALUES
VALUES
FOR
UNIPOLAR
FOR
BIPOLAR INPUTS . .
INPUTS . .
. . •
3-6
3-6
.
3-7
3-7
4-3
4-4
5-1
5-2
5-3
6-3
6-3
vi
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Page 8

PREFACE
This
Translation
board.
sections
manual
The
in
is
DT2814
folowing
the
manual.
written
analog
list
CHAPTER 1 - INTRODUCTION
Provides
indicates
CHAPTER
Gives
specifications
used
with
CHAPTER
Gives
how
to
CHAPTER
DT2814
acquisition
single-ended
an
overview
related
2 -
SPECIFICATIONS
the
complete
for
it.
3 - UNPACKING
instructions
configure
4 -
Describes
with
the
accessories.
connection
accessories.
electrical
the
AND
on
how
it
for
the
host
for
the
to
digital
provides
on
the
DT2814
DT2814
board
CONFIGURATION
to
unpack
a
specific
interconnections
computer
Provides
scheme.
users
summeries
board
and
and
the
user
mechanical
accessories
board
application.
system
a
diagram
of
Data
converter
of
all
and
and
the
of
and
of
data
the
CHAPTER
5 - ARCHITECTURE
Discusses
architecture
registers,
initializatiion
provides
CHAPTER
6 - CALIBRATION
Describes
unipolar
CHAPTER
7 -
Provides
the
and
functions
a
programming
the
calibration
or
bipolar
EXAMPLE
two
example
main
and
input
PROGRAMS
programs.
AND
elements
operation.
of
the
A/D
conversion
sequence.
of
ranges.
vii
OPERATION
of
Describes
register
the
DT28~4
the
bits,
processes,
board
DT2814
the
the
and
in
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Page 9

APPENDIX A -
BOARD
ASSEMBLY
DIAGRAM
Gives
the
board
assembly
diagram
of
the
DT2814.
viii
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Page 10

CHAPTER
1
INTRODUCTION
1.1
The
analog
OVERVIEW
Data
Translation
to
complete,
for
laboratory
applications.
The
DT2814
the
It
IBM
acquires
converts
processed
conversion
converter
conversions
programmable
conversion
The
DT2814
It
can
ranges
coding
and
be
of
is
offset
Interrupts
completion
level
is
jumper-selectable.
digital
IBM
PC
plugs
PC/XT/AT
analog
them
by
into
the
is
accomplished
capable
per
frequencies
triggers.
provides
configured
+/-SV,
straight
binary
to
the
of
an
DT2814
converter
compatible
research
into
a
single
computer
signals
a
host
of
up
to
second).
16
single-ended
for
0
to
+5V,
binary
for
processor
A/D
conversion.
is
a
low
board
data
and
acquisition
industrial
I/0
or
compatible
from
digital
code
microcomputer.
by a 12-bit
25kHz
An
can
throughput
on-board
be
unipolar
and
for
unipolar
bipolar
can
be
cost,
which
expansion
user
inputs
which
used
input
or
bipolar
+/-2.5V.
input
input
generated
The
half-size
offers
system
control
slot
backplane.
and
can
The
A/D
monolithic
(25,000
clock
to
with
issue
channels.
input
Output
ranges
ranges.
at
the
interrupt
a
of
be
The
DT2814
the
1.2
A
panels
IBM
PC
ACCESSORIES
wide
range
can
acquisition
~ompatible
follows:
DT701-20
This
is
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operates
bus.
of
signal
be
accessories.
accessories
a
universal
from
used
the
+5V,
+12V,
conditioning/screw
with
A
screw
from
the
brief
Data
terminal
DT2814
description
1-1
and
-12V
terminal
as
Translation
panel
on
data
of
which
Page 11

INTRODUCTION
ACCESSORIES
provides
input
for
components.
DT709-S
This
terminal
protection.
DT709-Y
This
differential
input
differential
mode
+12V
the
DT709-M
This
It
250
DT756-Y
This
bridge,
differential
outputs,
analog
common mode
obtains
connector
convenient
channels.
user-supplied
is
a
signal
channels
rejection
and
DT2814
is
a
current
converts
ohm
current
board
and
inputs
the
of
16-channel
panel.
conditioning
interface
of
amplifier
of
-12V
board.
0
to
shunt
is
low
inputs
and
effectively
differential.
rejection
+12V
the
connection
It
also
passive
It
the
DT2814.
+/-20V.
power
input
20mA
inputs
resistor.
designed
level
and
-12V
DT2814
provides
single-ended
provides
to
at
each
The
from
version
inputs.
and
of
power
board.
signal
panel
the
16
It
input
DT709-Y
the
J1
of
to
0
for
16
makes
The
+/-SV.
points
to
blank
conditioning
+/-20V
provides
single-ended
contains
for
common
obtains
connector
the
DT709-Y.
to
SV
using
thermocouple,
It
provides
single-ended
the
board
The
from
DT2814
provides
DT756-Y
the
the
pads
screw
input
a
a
of
a
16
J1
DT750
Backplane/DT6700
The
accommodates
signal
required
provides
input
current
input;
The
20-conductor
connect
conditioning
DT750
conditioning
for
isolation
types:
loop
tachometer
the
screw
accessories
signal
up
each
input;
EP047
Series
Modules
conditioning
to
16
DT6700
modules.
input
and
one
differential
RTD
input;
cable
or
or
assembly
terminal
to
the
1-2
series
One
channel.
of
the
voltage
bridge
thermocouple
panels
DT2814
backplane
module
Each
following
completion
is
and
board.
isolated
module
input;
input.
used
signal
is
to
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Page 12

CHAPTER
2
SPECIFICATIONS
2.1
This
board.
are
2.2
Number
Input
INTRODUCTION
chapter
Unless
typical
ANALOG
of
Analog
Ranges
(Jumper-selectable)
Output
Data
Gain
Input
Impedance
Off
On
Channel
Channel
lists
at
+25
INPUTS
Codes
the
noted
degrees
Inputs
specifications
otherwise,
C
and
16
0
+/-S.OOV,
straight
binary
1
>10
10pF
>10
of
the
specifications
rated
single-ended
to
+5.00V
(unipolar)
(bipolar)
(unipolar)
(fixed)
megohms,
in
megohms,
100pF
the
voltage.
+/-2.5V,
binary
or
(bipolar)
parallel;
in
parallel
DT2814
offset
2-1
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Page 13

SPECIFICATIONS
ANALOG
INPUTS
Bias
Maximum
Maximum
ACCURACY
Resolution
Nonlinearity
Differential
Inherent
System
Channel
Gain
Zero
Current
Input
Damage,
Input
Damage,
Accuracy
Crosstalk
Error
Error
Voltage
Power
Voltage
Power
Nonlinearity
Quantizing
On
Off
Without
Without
Error
+/-lOOnA
+/-30V
+/-20V
12
bits
Less
Less
+/-1/2
Within
-80dB
Adjustable
Adjustable
than
than
LSB
+/-.03%
at
+/-1/2
+/-1/2
1kHz
to
to
LSB
LSB
FSR
0
0
DYNAMIC
Channel
A/D
A/D
Dynamic
THERMAL
A/D
Unipolar
Bipolar
Gain
Differential
PERFORMANCE
Acquisition
Conversion
Converter
Error
CHARACTERISTICS
Zero
Drift
c
Monotonicity
Drift
Time
Throughput
Linearity
Time
Drift
8
microseconds
30
microseconds
25kHz
+/-.75
lOV
20
17ppm
30ppm
+/-3ppm
0
to
LSB
change
microvolts;deg.
of
of
+50
for
(max)
FSR/deg.
FSR/deg.
of
FSR/deg.
deg.
a
C
C
C
c
2-2
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Page 14

SPECIFICATIONS
ON-BOARD
CLOCK
2.3
Base
ON-BOARD
Frequencies
Selectable
Divisor
usable
CLOCK
Clock
Frequencies
Frequencies
SO
to
O.OOSHz
1
to
10,000,000
decade
O.OOSHz
600kHz
to
600kHz
increments
to
20kHz
in
2-3
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Page 15

SPECIFICATIONS
INTERFACE CHARACTERISTICS
2.4
Compatible
Interface
Bus
Number
INTERFACE CHARACTERISTICS
Bus
Type
Loading
of
Locations
Factory-Assigned
Interrupt
Interrupt
Analog
Data
Path
Options
Source
Data
Format
Occupied
Base
Address
IBM
PC/XT/AT
I/O
mapped
Presents
2
bytes
address
1
busload
220H
Jumper-selectable
level
or
Finish
conversion
12-bit
left
8
7
bits
3,
bit
A/D
hand
4,
5,
(A/D
done)
data
justified
to
6,
2-4
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Page 16

SPECIFICATIONS
POWER
REQUIREMENTS
2.5
Power
+5V
+12V
-12V
2.6
Dimensions
Weight
Maximum
Operating
POWER
Requirements
PHYSICAL/ENVIRONMENTAL
REQUIREMENTS
Altitude
Temperature
Range
+/-10%
+/-10%
+/-10%
4.23"
10.75
3.5
ounces
7,500
0
to
@138mA
@22mA
@29mA
X
4.23"
X
1075cm
feet
+50
(98g)
(2286m)
deg.
...
C
Storage
Humidity
2.7
20-pin
Cable
CONNECTORS
Assembly
Temperature
J1
Connector
AND
Range
CABLES
-25
to
+70
To 95%,
non-condensing
3M
No.
3493-2003
compatible
connector:
EP047:
flat
EP047-1:
20-conductor,
ribbon,
18"
deg.
3M-3421
C
8ft.
version
2-5
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Page 17

SPECIFICATIONS
COMPATIBLE
SCREW
TERMINAL
PANELS
2.8
Screw
COMPATIBLE
Terminal
SCREW
Panels
TERMINAL
PANELS
DT701-20,DT709-S,
DT709-M,
DT756-Y,
DT750/6700
2-6
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Page 18

CHAPTER
3
3.1
This
INTRODUCTION
chapter
explains
second
part
user-selectable
prior
3.2
Inspect
for
to
installing
UNPACKING
the
evidence
Depending
proceed
3.2.1
If
no
as
NO
visible
1.
APPARENT
Place
cut
UNPACKING
consists
how
to
discusses
shipping
on
the
outlined
damage
the
the
AND
of
unpack
parameters
the
board.
carton
of
mishandling
condition
in
the
DAMAGE
is
found,
container
shipping
CONFIGURATION
two
parts.
the
the
which
shipped
configuration
should
immediately
during
of
the
next
two
shipping
sections.
proceed
on
a
stable
tape.
The
as
first
board.
upon
follows:
surface
part
done
be
receipt
transit.
carton,
The
of
and
2 .
3.
Grasp
underneath
the
top.
While
placing
portion
item
from
prevent
from
possible
during
the
of
the
any
transit.
front
and
one
the
styrofoam
damage
static
of
lift
hand
system
the
forward
firmly
chassis,
chips.
to
the
electricity
flat
and
board
up
to
on
a
remove
This
components
build-up
carton
open
metal
the
will
3-1
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Page 19

UNPACKING
UNPACKING
4.
5.
AND
After
of
CONFIGURATION
allowing
any
static
microcomputer
board
or
bag.
Examine
the
damage.
encountered,
next
section.
a
moment
electricity
chassis,
component
item
If
again
any
proceed
for
carefully
from
for
sign
as
detailed
the
into
the
any
of
discharge
the
unwrap
anti-static
possible
damage
in
host
the
is
the
3.2.2
If
the
it
in
agent.
container
Then:
1.
2.
3.
VISIBLE
item
container
the
Then
as
Examine
damage
repair
If
present
insurance
Have
and
replace
If
the
write:
Customer
DAMAGE
presence
proceed
detailed
the
is
or
the
delivery
during
the
insurance
arrive
the
item
Data
100
Marlboro,
Tel:
shows
of
to
unpack
in
item
for
detected,
installation
unpacking,
claim
inspection.
at
an
damaged
is
to
Service
Translation,
Locke
MA
(617)
Telex:
951-646
any
visible
the
delivering
it
the
from
previous
shipping
do
of
carrier's
agent
inspect
agreement
item.
be
repaired,
Department
Inc.
Drive
01752-1192
481-3700
NOT
the
damage,
the
damage.
perform
damaged
agent
call
the
to
open
carrier's
shipping
section.
item.
was
for
damage
repair
call
If
any
not
an
or
or
4.
5.
Request
(RMA)
any
item
Repackage
anti-static
original
container
a
number.
will
shipping
for
Return
This
be
accepted
the
wrapp1ng
shipment
Material
must
?amaged
and
material
back
be
for
Authorization
obtained
return.
item
place
or
to
the
in
it
a
factory.
before
the
in
its
secure
3-2
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Page 20

----
----------~------
----~----------------
--~--~-
6.
Ensure
anti-static
conductive)
is
Static
damaging
on
Return
number,
that
handled
electricity
Data
the
to
the
UNPACKING
NOTE
the
item
packaging,
with
to
electrical
Translation
damaged
address
AND
is
ground
is
products.
item,
above.
CONFIGURATION
UNPACKING
wrapped
(electrically
and
that
protection.
potentially
components
with
the
in
it
RMA
3-3
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Page 21

UNPACKING
AND
CONFIGURATION
CONFIGURATION
3.3
Four
by
range,
CONFIGURATION
operating
the
clock
level.
jumpering
Jumpers
number
posts
are
(as
are
installed,
Jumper
configuration
installing
on
the
pair
are
board
indicated
and
Appendix
3.3.1
The
BASE
DT2814
address
through
select
to
define
3FEH.
the
selected
board
to
Register,
set.
The
configuration
default
installed
bit
it
represents.
user:
The
selection
the
board.
designated
W19)
connected
or
or
of
on
the
A.
ADDRESS
occupies
space.
base
the
lower
for
select
or
figure
base
jumper
parameters
base
base
frequency,
represents
together
disconnected
removing
jumper
on
the
board
SELECTION
two
The
Figure
3-1
address.
end
the
the
the
board.
Control
Data
also
for
the
address
selects
on
the
address
is
performed
by
"W"
two
is
a
performed
wire-wrap
posts.
component
assembly
locations
base
address
shows
Address
of
the
Bit
Register
illustrates
selection
of
220H.
the
DT2814
of
and
by
numbers.
jumper
when
when
or
Jumper
side
drawing
in
the
bit
I/0
AO
is
Register,
and
value
are
the
board,
the
appropriately
A
single
posts.
the
it
jumper
is
by
a
jumper
designations
of
the
the
IBM
ranges
jumpers
A9
is
address
decoded
the
is
not
the
of
the
Note
of
"0"
selected
input
interrupt
These
removed.
simply
plug
DT2814
found
PC
from
200H
which
always
segment
on
Status
jumper
jumper
factory
that
for
"W"
is
in
I/0
1
the
an
the
3-4
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Page 22

UNPACKING
AND
CONFIGURATION
CONFIGURATION
I 2 2 o I
1=========1===================1===================1
I+A9 I+A8 I+A7 I+A6 I+AS I+A4 I+A3 I+A2 I+A1
I+AO
l----l----1----l----l----l----l----l----1----l----l
11101010111010101010
l---------1-------------------l-------------------l
I o o o o o o o o I
I I I I I I I I I
I o o o o o o o o I
1 wa
I
Always
NOTES:
1.
2.
w7
1
The
first
factory
row
indicates
address.
value
indicates
a
value
removed.
AO
is
board.
the
Control
the
clear
Status
of
not
(0),
w6
selected
each
of
When
ws
row
from
the
The
that
"1"
configured.
it
third
address
the
indicates
set
Register
Register
selects
w4 w3
the
top
base
bit
address.
numbers
row
bit.
jumper
It
(1),
(write
(read
the
w2
represents
shows
A
is
installed,
that
is
decoded
it
selects
command).
Data
w1
Decoded
on
The
of
the
the
value
the
command)
Register.
of
jumper
between
1
board
the
second
base
binary
"0"
and
on
the
and
When
I
I
is
FIGURE
3.3.2
The
DT2814
ranges:
(+/-2.5V
unipolar
only.
the
voltages.
selection
3-1.
board
INPUT
permits
one
and
input
If
the
of
3-1:
RANGES
unipolar
+/-SV).
input
accepts
The
the
BASE
selection
range,
range
both
jumper
input
ADDRESS
(0
If
the
it
accepts
selected
positive
configurations
ranges
SELECTION
of
three
to
+SV)
board
is
positive
is
and
are
OF
220H
voltage
and
two
configured
bipolar,
negative
given
input
bipolar
voltages
input
for
in
Table
for
then
the
3-5
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Page 23

UNPACKING
AND
CONFIGURATION
CONFIGURATION
TABLE
3-1:
SELECTION
OF
THE
INPUT
RANGE
I I JUMPERS I
I INPUT
RANGE
I
W17
I
W18
I
W19
I
1---------------------------------------------l
I 0
to
I
+/-2.5V
I
+/-5V
NOTE:
1.
3.3.3
The
on-board
trigger
Eight
be
derived
jumpers
divisors
particular
the
base
selection
3-2.
+5V I
(FC)
FC
is
CLOCK
A/D
different
W9, W10,
further
application.
frequency
of
factory
BASE
programmable
conversions
from
the
In
I
Out
I
Out
configuration.
FREQUENCY
base
frequencies--50
the
oscillator
and
W11.
divide
is
base
frequency
I
Out
I
In
I
In
SELECTION
pulse
at
Program
each
The
base
software
discussed
I
Out
I
Out
I
In
generator
selected
to
by
configuration
selected
frequency
in
Chapter
is
shown
I
I
I
is
intervals.
600kHz--can
division
W20
In
In
Out
in
used
decade
for
5.
Table
I
I
I
I
to
of
the
of
The
I
BASE
I (
TABLE
FREQUENCY
KHZ
3-2:
OF
THE
ON-BOARD
) I
BASE
I
W9
FREQUENCIES
CLOCK
JUMPERS
I
W1
0 I
W11
1-------------------------------------1
I
I
I
I
I
I
I
I
NOTE:
1.
50
100
12
15
(FC)
0 I
0 I
2 0 0 I
300
6 0 I
600
FC
is
factory
I
In
I
In
In
In
Out
I
Out
Out
I
Out
I
I
I
I
I
I
I
I
configuration.
In
In
Out
Out
In
In
Out
Out
I
In
I
Out
I I n I
I
Out
I
In
I
Out
I
In
I
Out
I
I
I
I
I
I
I
I
I
3-6
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Page 24

UNPACKING
AND
CONFIGURATION
CONFIGURATION
3.3.4
The
DT2814
request
levels--3
bit
The
given
not
7
selection
select
I INTERRUPT I
I
1-----------------------------------------1
I +IRQ 3 I
I
I
I
I
NOTES:
1.
INTERRUPT
can
be
to
the
processor
(highest),
of
the
Status
of
in
Table
any
TABLE
REQ. LEVELl
+IRQ 4 I
+IRQS I
+IRQ6 I
+IRQ 7 I
All
3-3.
interrupt
3-3:
jumpers
LEVEL
jumpered
4,
Register
the
SELECTION
REQUEST
W12 I W13 I W14 I W15 I W16
In
Out
Out
Out
Out
interrupt
The
I
I
I
I
I
out
at
5,
factory
level.
Out
In
Out
Out
Out
in
to
any
6,
or
sets
OF
THE
LEVEL
JUMPERS
I
Out
I
Out
I
In
I
Out
I
Out
factory
issue
one
request
configuration
an
of
five
7
(lowest)--when
(see
INTERRUPT
I
Out I Out
I
Out I Out
I
Out I Out
I
In
I
Out
configuration.
Chapter
I
I
interrupt
possible
level
does
I
I
I
I
I
Out
In
I
I
5).
is
3.4
Table
jumpers
user-configurable
parameters.
each
JUMPER
3-4
jumper
I
JUMPER
SUMMARY
gives
on
the
is
TABLE
a
The
noted
3-4:
I
summary
DT2814
for
factory
in
DT2814
JUMPER
of
the
board.
the
parentheses.
I
selection
default
JUMPER
JUMPER
configurations
All
the
of
configuration
SUMMARY
I
JUMPER
1--------------------------------------------
l
Wl
(In)
I I I I
I
W5
(Out)
I I I I
W9
I
(In)
I I I I
I
W13
(Out) I W14
I , I I I
I
W17
(Out) I W18
I
I
I
W2
W6
WlO
(In)
(In)
(In)
(Out)
(In)
I
W3
I
W7
I
Wll
I Wl5
I Wl9
(In)
(In)
(Out)!
(Out) I W16
(In)
I
I
I
W4
wa
W12
W20
jumpers
various
(In)
(In)
(Out)
(Out)
(Out)
of
are
of
3-7
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Page 25

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Page 26

CHAPTER
4
INTERCONNECTIONS
4.1
The
slot
connects
This
INTRODUCTION
DT2814
or
to
chapter
illustrates
screw
terminal
discussion
4.2
The
CONNECTION
DT2814
backplane
communication
DT2814
is
assignments
plugs
into
compatible
the
user
details
the
connection
panels
and
a
diagram
TO
plugs
via
its
between
carried
of
the
backplane
these
IBM
into
62-pin
the
through
P1
connector
the
IBM
interface
two
of
to
the
of
single-ended
PC
BACKPLANE
the
host
this
PC/XT/AT
on
connector
on
connections.
some
Data
DT2814
IBM
P1
edge
processor
connector.
are
connector
Translation
and
provides
inputs.
PC
compatible
connector.
given
Table
expansion
Pl,
and
J1.
It
also
All
and
The
the
pin
4-1.
a
4-1
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Page 27

INTERCONNECTIONS
CONNECTION
TO
IBM
PC
BACKPLANE
I
PIN
TABLE
I
4-1:
MNEMONIC
Pl
PIN
ASSIGNMENTS
I SIGNAL DESCRIPTION
1-----------------------------------------
1
Al
I
A2
I
A3
I
A4
I
AS
I
A6
I
A7
I
AS
I
A9
I AlO
I
All
I
Al2
A13
A14
AlS
Al6
Al7
AlB
Al9
A20
A21 +AlO
A22
A23
A24
A25
A26
A27
A28
A29
A30
A31
-I/0
+D7
+D6
+DS
+D4
+D3
+D2
+Dl
+DO
+I/0
+AEN
+Al9
+Al8
+Al7
+Al6
+AlS
+Al4
+Al3
+Al2
+All
+A9
+A8
+A7
+A6
+AS
+A4
+A3
+A2
+Al
+AO
CH CK
CH
ROY
I/0
Channel
Data
Data
Data
Data
Data
Data
Data
Data
I/0
Address
Address
Address
Address
Address
Address
Address
Address
Address
Address
Address
Address
Address
Address
Address
Address
Address
Address
Address
Address
Address
Bit
Bit
Bit
Bit
Bit
Bit
Bit
Bit
Channel
Check
7 (MSB)
6
S
4
3
2
1
0 (LSB)
Ready
Enable
Bit
19
Bit
18
Bit
17
Bit
16
Bit
lS
Bit
14
Bit
13
Bit
12
Bit
11
Bit
10
Bit
9
Bit
8
Bit
7
Bit
6
Bit
Bit
Bit
Bit
Bit
Bit
S
4
3
2
1
0 (LSB)
(MSB)
Continued
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on
4-2
next
page
Page 28

CONNECTION
INTERCONNECTIONS
TO
IBM
PC
BACKPLANE
TABLE
I
PIN
4-1:
I
MNEMONIC
P1
PIN
ASSIGNMENTS(CONT'D)
I SIGNAL DESCRIPTION I
1-----------------------------------------1
Bl
B2
B3
B4
BS
B6
B7
B8
B9
B10
B11
B12
B13
B14
B15
B16
B17
B18
B19
B20
B21
B22
B23
B24
B25
B26
B27
B28
B29
B30
B31
GND
+RESET
+5V
+IRQ2
-5VDC
+DRQ2
-12V
RESERVED
+12V
GND
-MEMW
-MEMR
DRV
-row
-IOR
-DACK3
+DRQ3
-DACK1
+DRQ1
-DACKO
CLOCK
+IRQ7
+IRQ6
+IRQ5
+IRQ4
+IRQ3
-DACK2
+T/C
+ALE
+5V
+OSC
+GND
GROUND
RESET DRIVER
VOLT
+5
INTERRUPT
-5
VOLT
DMA
-12
VOLT
RESERVED
+12
VOLTS
GROUND
MEMORY
MEMORY
I/0
WRITE
I/0
DMA
ACKNOWLEDGE
DMA
DMA
ACKNOWLEDGE
DMA
DMA
ACKNOWLEDGE
CLOCK
INTERRUPT
INTERRUPT
INTERRUPT
INTERRUPT
INTERRUPT
DMA
ACKNOWLEDGE
TERMINAL
ADDRESS
+5
VOLT
OSCILLATOR
GROUND
POWER
REQUST
POWER
REQUEST
POWER
~OWER
WRITE
READ
COMMAND
READ
REQUEST
REQUEST
COMMAND
REQUEST
REQUEST
REQUEST
REQUEST
REQUEST
COUNT
LATCH
POWER
2
2
COMMAND
COMMAND
3
3
1
1
0
7
6
5
4
3
2
ENABLE
4.3
The
the
4-2
USER
DT2814
20-pin,
gives
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CONNECTION
is
connected
3M
type
the
pin
assignments
J1
connector
to
4-3
the
of
user
(P/N
the
interface
3493)
J1
connector.
.
via
Table
Page 29

INTERCONNECTIONS
USER
CONNECTION
TABLE
I
PIN
4-2:
NO.
J1
PIN
ASSIGNMENTS
I SIGNAL
NAME
1-----------------------------
NOTE:
1.
The
20
power
Data
terminal
little
available
The
used
user-supplied
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
+/is
active
Translation
+/-12V
to
Channel
Channel
Channel
Channel
Channel
Channel
Channel
Channel
Channel
Channel
Channel
Channel
Channel
Channel
Channel
Channel
Power
Analog
+12V
-12V
12V
on
intended
circuitry
panels.
current
on
should
power
Ground
Ground
out
out
pins
only
those
external,
circuits.
0
8
1
9
2
10
3
11
4
12
5
13
6
14
7
15
19
screw
Very
pins.
NOT
and
to
on
is
be
...
4.4
rhis
)Card
ivailable
:igure
;crew
)T709-S,
;onditioning
CONNECTIONS
section
to
4-1
terminal
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illustrates
some
from
DT709-M,
Data
shows
modules
TO
SCREW
compatible
Translation.
the
connection
panel/signal
and
DT756-Y,
of
the
4-4
TERMINAL
connections
screw
of
conditioning
and
DT750/DT6700
PANELS
of
terminal
the
isolated
the
DT2814
series.
DT2814
panels
to
panels
signal
Page 30

DT701-20
DT709-S
CONNECTIONS
TO
SCREW
INTERCONNECTIONS
TERMINAL
PANELS
Figure
DT701-20
DT709-M
'1
...J
DT756-Y
DT750/DT6700
SERIES
FIGURE
TERMINAL/SIGNAL CONDITIONING
4-2
screw
4-1:
TO
SOME
illustrates
terminal
CONNECTION
DATA
TRANSLATION
the
panel
EP047
OF
THE
connection
to
two
DT2814
r
DT2814
L
DT2814
SCREW
PANELS
DT2814
TP0007P
of
boards.
the
DT?Ol-20
EP047
DT2814
FIGURE
TO
THE
4-2:
CONNECTION
DT701-20
SCREW
OF
THE
TERMINAL
DT2814
PANEL
4-5
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Page 31

INTERCONNECTIONS
SINGLE-ENDED
CONNECTION
SCHEME
4.5
The
SINGLE-ENDED
DT2814
inputs
signals
to
the
of
this
channel
user
from
should
than
gives
a
be
15
connection
v
0
A/D
only.
share
a common
Analog
scheme
density.
up
common mode
differential
restricted
feet).
scheme
CONNECTION
board
In
single-ended
Ground
is
that
The
A
is
is
designed
low
(AGND,
the
major
input.
to
short
diagram
given
SCHEME
for
connections,
side
pin
user
which
18).
gets
disadvantage
rejection
Single-ended
lead
of
the
in
Figure
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
single-ended
is
The
the
is
he
could
lengths
single-ended
4-3.
input
connected
advantage
maximum
that
the
get
inputs
(less
\TOTES:
FIGURE
1.
All
Analog
2 •
All
connected
so
on
floating
4-3:
signal
unused
can
all
SINGLE-ENDED
inputs
Ground.
analog
to
Analog
result
other
in
channels,
channel(s)
4-6
CONNECTION
must
input
Ground.
inaccurate
those
being
be
referenced
channels
A/D
closest
affected
SCHEME
should
Failure
conversions
most.
to
to
TPOOlOP
to
be
do
the
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Page 32

I'
l
5.1
This
operation
5.2
rhe
:onsists
status
Jperations
cegisters.
lccessibility
INTRODUCTION
chapter
ARCHITECTURE
DT2814
REGISTER
ARCHITECTURE
of
the
features
of
Register,
on
Table
TABLE
describes
DT2814
three
the
of
each
NAME
CHAPTER
a
registers:
and
DT2814
5-1
shows
register.
5-1:
DT2814
A/D
A/D
I
5
AND
OPERATION
the
converter
simple
Data
are
carried
the
REGISTERS
ADDRESS
architecture
board.
architecture
Control
Register.
out
relative
Register,
using
address
and
which
All
these
and
I ACCESS I
--------------------------------------------------1
Control
Status
Data
Register
Register
Register
I
Base
I
Base
I
Base+
11
I
Write:
I
Read:
Read:
byte
byte
2
bytes
I
I
I
5-1
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Page 33

ARCHITECTURE
ARCHITECTURE
AND
OPERATION
5.2.1
The
contains
conversion.
5-l
of
BIT
BITS
CONTROL
Control
followed
each
I 7 I 6 I 5 I 4 I 3 I 2 I 1 I o I
1-------------------------------1
I
\---------/
F21
bit
Fll
I
Decade
Select
FUNCTIONS
7-5
-
Decade
These
on-board
obtained
are
configurations
frequency
REGISTER
Register
the
The
by
in
the
FOIENBI
Divisor
Bits
FIGURE
bits
given
select
clock
by
are
(BASE
is
a
write
parameters
register
the
description
register.
C31
is
C21
\--------------/
Channel
5-l:
Divisor
base
the
various
in
for
given
the
I
Bits
CONTROL
Select
decade
frequency.
Table
the
selection
in
Chapter
+
0,
WRITE
only
for
illustrated
Cll
Select
settings
the
of
COl
REGISTER
(F2,
divisor
5-2.
ONLY)
register
current
in
of
the
Bit
No.
Designation
Fl,
FO)
The
frequencies
of
these
The
of
the
3.
which
A/D
Figure
function
for
the
bits
jumper
base
TABLE
3IT 4 -
This
this
on-board
user.
triggers
5-2:
I
F2
SOFTWARE
Fl
FO
I
SELECTED
SELECTED
CLOCK
tREQUENCY
FREQUENCIES
1-------------------------------------1
I 0 0 0 I
I 0 0
I 0
I 0
1 0 0 I
I
I 1 0 1 I
I
1 1 0 I
I
1 1 1 I
Enable
is
bit
1 I
1 0 I
1 1 I
(ENB)
the
during
clock
Each
another
clock
at
clock
Base
Base
Base
Base
Base
Base
Base
Base
enable
a
the
A/D
Frequency
Frequency/10
Frequency/100
Frequency/lk
Frequency/lOk
Frequency/lOOk
Frequency/1M
Frequency/10M
bit.
write
rate
tick
conversion.
5-2
command
specified
after
A
the
"1"
write
A
I
I
written
enables
"0"
I
I
I
I
I
I
I
the
by
the
command
issued
to
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Page 34

ARCHITECTURE
AND
OPERATION
ARCHITECTURE
BITS
during
causes
3-0
These
available
conversion.
configurations
------------------------~----------
I
I
a
a
single
-
Channel
four
TABLE
CHANNEL
C3
C2
write
Select
bits
channels
Table
for
5-3:
SELECT
C1
command
step
triggering.
Bits
select
channel
A/D
CHANNEL
BITS
co
disables
one
for
5-3
(C3,
of
the
shows
the
C2,
sixteen
selection.
SELECTION
I SELECTED I
I
CHANNEL
NO.
clock
C1,
CO)
(0
current
the
I
to
and
15)
A/D
bit
1-----------------------------------1
I o o o o I o I
I o o o 1 I 1 I
I o o 1 o I 2 I
I o o 1 1 I 3 I
I o 1 o o I 4 I
I
o 1 o 1 I 5 I
I o 1 1 o I 6 I
I o 1 1 1 I 7 I
I 1 o o o I a I
I 1 o o 1 I 9 I
I 1 o 1 o I
I 1 o 1 1 I
1 1 1 o o I
I 1 1 o 1 I
1 1 1 o I
I
1 1 1 1 1 I
10
11
12
13
14
15
I
I
I
I
I
I
5-3
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Page 35

ARCHITECTURE
ARCHITECTURE
·AND
OPERATION
5.2.2
The
provides
conversions.
5-2
function
I 7 I 6 I 5 I 4 I 3 I 2 I 1 I o I
1-----------------------------------1
IFINISHIERRIBUSYIENBI
STATUS
Status
which
REGISTER
Register
information
The
is
followed
of
each
is
register
bit
in
(BASE
a
read
about
the
C31
+
the
is
by
register.
C21
0;
READ
only
condition
illustrated
the
description
Cll
\--------------1
I
Select
REGISTER
status
A
"1"
complete
is
in
process
is
and
converted
will
indicates
in
that
not
for
of
allow
BIT
FUNCTIONS
BIT 7 -
This
conversion
current
valid
Register.
conversion
data
interrupt
Chapter
interrupt
routine
the
bit.
FIGURE
Finish
bit
in
A/D
5-2:
reports
cycle.
conversion
converted
A
"0"
is
the
Data
level
3),
to
the
read
Data
the
processor
Channel
STATUS
the
is
data
indicates
still
Register
is
selected
setting
the
Register
ONLY)
register
Bit
COl
Designation
Bits
of
and
the
valid.
the
this
the
data.
clear
of
in
No.
the
that
A/D
the
and
board
bit
interrupt
the
which
the
A/D
Figure
of
current
that
Data
current
that
If
(see
will
Reading
Finish
the
the
the
the
an
BIT 6 -
Error
A
"1"
occurred
results
triggered
b)
A
conversion
from
The
error
Data
Register.
(ERR)
indicates
on
when:
before
the
previous
flag
the
is
that
a)
is
an
board.
A new A/D
the
current
triggered
conversion
cleared
error
An
by
a
condition
error
conversion
one
has
before
has
read
condition
finished;
the
been
of
the
read.
5-4
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has
is
data
A/D
Page 36

ARCHITECTURE
AND
OPERATION
ARCHITECTURE
BIT
BIT
BITS
5 -
Busy
This
in
progress.
4 -
Enable
This
the
on-board
indicates
to
the
3-0
CO)
These
for
bits
flag
bit
Control
Control
-
Channel
four
the
current
in
the
sets
(ENB)
is
a
readback
Register.
clock
conversions
Address
bits
Control
to
"1"
is
enabled
Register.
read
back
conversion
Register.
when
of
A
"1"
are
Select
an
A/D
the
clock
indicates
for
triggers.
triggered
Bits
the
channel
by
the
conversion
enable
that
A
by a write
(C3,
C2,
selected
corresponding
is
on
the
"0"
C1,
5-5
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Page 37

A~CHITECTURE
AND
ARCHITECTURE
OPERATION
5.2.3
The
which
conversion
the
A/D
read
justified
significant
the
is
The
read
the
Register
A/D
DATA
A/D
Data
holds
operation.
Status
Register)
conversion,
from
such
least
read
first
significant
from
read
accesses
low
byte
format
A)
REGISTER (BASE +
Register
the
digital
is
When
sets,
the
12-bit
the
A/D
Data
that
eight
the
bits,
four
the
A/D
accesses
the
low
byte.
always
is
given
First
data
an
data
indicating
Register.
high
while
bits.
Data
the
read
in
read
8-bit
the
converted
high
Figure
-
I 7 I 6 I 5 I 4 I 3 I 2 I 1 I o I
1-------------------------------1
ID111D10ID9
B)
IDS
Second
ID7 ID6
data
read
IDS
1;
resulting
Finish
byte
the
Register
The
zero.
high
ID4
-
low
READ
read
only
bit
the
data
The
contains
low
byte
The
converted
in
byte,
lower
The
5-3.
byte
Bit
I
Designation
byte
ONLY)
from
end
data
the
two
the
four
A/D
No.
register
the
(bit
of
can
is
contains
steps.
second
bits
A/D
7
of
the
be
left
most
data
of
Data
I 7 I 6 I 5 I 4 I 3 I 2 I 1 I 0 I
1-------------------------------1
ID3 ID2 ID1
FIGURE
In
order
overwriting
the
user
to
the
frequency.
IDO
5-3:
to
avoid
valid
maintain
trigger
I 0 I 0 I 0 I 0 I
A/D
DATA
REGISTER
NOTE
A/D
data,
a
rate
trigger
it
read
specified
is
rate
important
at
Bit
No.
Designation
errors
least
by
the
and
that
equal
clock
5-6
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Page 38

ARCHITECTURE
AND
OPERATION
OPERATION
5.3
This
DT2814
OPERATION
section
board,
programming
5.3.1
Three
INITIALIZATION
steps
DT2814:
1.
2.
3.
These
operations
DT2814.
5.3.2
An
A/D
two
by
the
made
Control
A/D CONVERSION
conversion
trigger
loading
on-board
by
the
Register.
sequence.
must
Write
Wait
Read
A/D
the
state
discusses
the
be
0
to
the
for
at
the
high
Data
Register.
will
starts
sources
Control
programmable
of
the
A/D
conversion
performed
Control
least
byte
clear
with
on
the
Register,
the
Enable
initialization
to
Register.
100
microseconds.
and
the
all
the
a
trigger.
DT2814
and
clock.
bit
process,
initialize
low
registers
board:
hardware,
The
(bit
of
and
byte
of
There
software,
selection
4)
in
on
using
the
the
the
the
the
are
is
the
Single
operations
software
Register
with
acquired
(bit
must
4)
of
be
completed
Register,
to
initiate
conversions
Control
Clock
Register.
triggers
conversions
the
Control
byte
(1).
loaded
Conversion
programmable
repetitive
new
(disable
byte
clock
method.
the
starts
the
byte
clear.
and
the
data
Control
another
occur
are
are
Register.
into
triggers
clock
conversions
to
the
triggers).
are
Simply
address
an
A/D
loaded
After
is
conversion.
on
typically
desired
the
at
Control
always
of
conversion.
into
the
read
Register
successive
on
The
Enable
Control
are
the
can
be
Register
5-7
loading
the
the
A/D
from
must
used
the
Register
then
selected
stopped
triggered
~hannel
The
Control
conversion
the
be
Thus
writes
when
channel
bit
(bit
issued
by
with
by
the
Control
Enable
Register
A/D
loaded
successive
to
repetitive
loaded
4)
must
by
rate.
writing
bit
4
to
Data
again
into
of
be
clear
the
be
bit
is
the
the
set
the
The
a
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Page 39

ARCHITECTURE
OPERATION
It
is
important
specified
conditions.
may
vary
frequency
Also,
to
processing
IBM
system
conversion
AND
OPERATION
for
Even
from
above
eliminate
time,
clock
cycles.
NOTE
that
the
a
clock
though
O.OOSHz
20kHz
contention
it
is
be
disabled
usable
the
to
is
frequency
to
avoid
clock
600kHz,
not
recommended.
recommended
during
error
frequency
an
output
for
system
that
clocked
be
the
5.3.3
The
PROGRAMING
following
programming
1.
2.
3.
SEQUENCE
sequence
the
DT2814.
Power
up
the
warm-up.
Initialize
in
this
Write
This
acquired
If
the
board
bit
section.
a
byte
byte
and
4
initiate
channel
bits
specified
(bits
Conversions
selected
W9, WlO,
to
5
of
and
the
clear,
automatically
channel.
requires
Register.
system
the
into
will
the
(Enable)
will
wait
repetitive
3
will
by
the
Wll,
Control
then
Each
a
new
must
board
the
select
trigger
of
for
by
to
0
occur
configuration
and
A/D
start
succeeding
write
be
performed
and
as
allow
described
Control
the
source
the
byte
a
clock
conversions
the
of
Control
at
the
the
state
Register.
conversion
on
to
channel
to
is
trigger
channel
clock
of
If
the
the
when
time
for
earlier
Register.
to
be
used.
set
on
(1),
the
select
Register).
rate
of
jumpers
bits
bit
4
will
selected
conversion
Control
be
to
7
is
4.
Stopping
trivial.
Control
conversions,
clearing
software
Simply
Register.
bit
4
initiated
disable
of
the
To
stop
stop
the
Control
conversions
writing
clock
clock
triggers
Register.
to
initiated
is
the
by
5-8
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Page 40

CHAPTER
6
CALIBRATION
6.1
This
INTRODUCTION
section
DT2814 A/D
adjusting
R6,
the
drawing
FULL
6.2
SCALE.
GUIDELINES
Some
two
Offset
in
general
performing
6.2.1
ASSUMPTIONS
1.
Calibration
all
Ground
2.
The
ft)
contains
board.
trimpots:
Appendix
guidelines
a
calibration
other
(pin
input
long.
calibration
The
Adjust.
A
for
will
channels
18).
cable
calibration
RS,
the
Refer
the
location
must
on
the
DT2814.
be
done
returned
is
less
procedures
is
Gain
to
the
of
be
observed
on
Channel
than
3
for
performed
Adjust,
assembly
RS
and
0
to
Analog
meters
the
by
and
R6.
when
with
(10
3.
Software
readings
is
available
of
Channel
0
to
and
provide
display
continuous
them
on
a
CRT.
6-1
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Page 41

CALIBRATION
GUIDELINES
6.2.2
1.
2.
6.2.3
1.
2.
6.2.4
Connect
Figure
EQUIPMENT
Precision
REQUIRED
voltage
Development
equivalent.
Miscellaneous
PRECAUTIONS
Switch
or
Connect
indicated
the
removing
a
host
the
the
in
INTERCONNECTIONS
the
voltmeter
6-1.
Corporation
cables
power
DT2814.
voltmeter
Figure
to
6-1.
the
source,
and
connectors.
off
to
DT2814
model
when
the
as
Electronic
501J,
installing
DT2814
shown
or
as
in
DT2814
FIGURE
6.3
6-1:
CALIBRATION
Calibration
month
intervals
changed.
followed
voltages
shown
in
CONNECTION
of
The
offset
by
the
are
different
Tables
Ch 0 (Jl,
AGND
PROCEDURE
the
DT2814
or
adjust
gain
6-1
and
PINl)
(Jl,
PIN18)
OF A VOLTMETER
when
adjust.
for
should
the
is
be
input
always
Note
each
6-2.
6-2
+
VOLTMETER
-
TO
performed
range
done
that
input
THE
the
range,
TP0009P
DT2814
at
has
first,
input
six
been
as
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Page 42

CALIBRATION
CALIBRATION
PROCEDURE
TABLE
I I DIGITAL I INPUT
I
SCALE
6-1:
FOR
DATA
UNIPOLAR INPUTS
!CODE(
CODING
HEX)
VALUES
I
RANGE
0-5V
I
I
1----------------------------------------1
I +FS - 1
I +FS - 2
I
1/2
I
1
LSB
I DIGITAL I INPUT
I
SCALE
LSB
LSB
scale
TABLE
I FFF I
I FFF I
I
I
6-2:
FOR
BIPOLAR INPUTS
!CODE(
800
001
DATA
HEX)
CODING
I
+/-5V
+4.9988
+4.
I
+2.5000
I
VALUES
9976
1.22mV
RANGE
I
+/-2.5V
I
I
I
I
I
I
1----------------------------------------------l
I +FS - 1
I +FS
I
+1/2
I 1
LSB
I o I
I
-1
LSB
I
-1/2
I
-FS
I
-Fs
-2
FS
FS
+ 1
LSB
LSB
LSB
I FFF I
I FFE I
I
I
I
I
I
I
coo
801
800
7FF
400
001
ooo
+4.9976
+4.9952
I
+2.5000
I
2.44mV
I
o.oooo
I
-2.44mV
I
-2.5000
I
-4.9976
I
-5.0000
I
+2.4988
I
+2.4976
I
+1.2500
I
1.22mV
I
o.oooo
I
-1.22mV
I
-1.2500
I
-2.4988
I
-2.5000
I
I
I
I
I
I
I
I
I
6.3.1
Apply
adjust
between
6.3.2
Apply
UNIPOLAR OFFSET ADJUST
a
de
the
output
UNIPOLAR GAIN ADJUST (FULL SCALE)
a
de
(4.9982V)
flicker
6.3.3
Apply
between
BIPOLAR OFFSET ADJUST
a
de
negative
potentiometer
OOOH
and
input
voltage
and
input
FULL
001H
offset
codes
adjust
codes
SCALE
R6
(see
voltage
potentiometer
OOOH
of
1
FFE
voltage
(-4.9988V)
for
flicker
Table
and
the
6-3
of
and
gain
and
6-2).
1/2
LSB
001H
1/2
LSB
potentiometer
FFF
(+/-5V
of
1/2
and
between
R6
(see
below
(see
RANGE)
LSB
adjust
(0.610mV)
for
flicker
Table
FULL
Table
6-1).
above
the
output
and
6-1).
SCALE
RS
for
the
offset
codes
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Page 43

CALIBRATION
CALIBRATION
PROCEDURE
6.3.4
Apply
BIPOLAR GAIN ADJUST
a
de
(4.99635V)
flicker
6.3.5
Apply
negative
between
BIPOLAR OFFSET ADJUST
a
de
FULL
potentiometer
OOOH
6.3.6
Apply
and
001H
BIPOLAR GAIN ADJUST
a
de
(2.4982V)
flicker
between
voltage
and
input
SCALE
R6
(see
voltage
and
of
adjust
codes
voltage
for
Table
of
adjust
codes
(+/-SV
1
and
the
gain
FFE
and
(-2.4994V)
flicker
6-2).
(+/-2.5V
1
and
the
gain
FFE
and
1/2
LSB
potentiometer
FFF
(+/-2.5V
of
1/2
and
between
1/2
LSB
potentiometer
FFF
RANGE)
below
(see
Table
RANGE)
LSB
adjust
output
RANGE)
below
(see
Table
FULL
6-2).
above
the
FULL
6-2).
SCALE
RS
for
the
offset
codes
SCALE
RS
for
6-4
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Page 44

CHAPTER
7
7.1
This
with
INTRODUCTION
chapter
the
7.1.1
This
input
BASIC
channels,
channel,
digital
until
any
scroll.
program
system
assumes
220H
10
20
30
40
50
60
70
80
90
100
110
120
130
and
CLS
LOCATE
FOR
IF
PRINT
GOTO
PRINT
FOR
OUT
LET
A=INP(&H220)
IF
B=INP(&H221)
DT2814
EXAMPLE
program
doing
code.
key
It
will
using
that
no
interrupts
3,1,1,12
Y=O
TO
Y>9
THEN
"ch
80
"ch
X=1
&H220,Y
A=O
A>=128
EXAMPLE
presents
board.
PROGRAM
taking
the
The
is
pressed.
is
overwritten
run
faster
their
the
DT2814
15
70
";
y;"
";
y;"
TO
3
THEN
PROGRAMS
two
example
1
performs
three
conversion,
program
if
BASCOM
is
are
" .
" .
I
130
ELSE
a
loop
samples
and
will
Output
by
it
is
function.
set
for
enabled.
'Set
position
'Loop
'Print
I
'Sample
'Write,
starts
'Read
until
100
'Read
base
programs
on
of
printing
loop
data
the
new
compiled
a
base
cursor
on
all
the
channel
select
the
the
Status
FINISH
'If
set,
conversion,
data
high
+ 1
for
all
data
sixteen
at
out
indefinitely
does
data.
on
the
The
program
address
to
a
known
channels
16
channel
times
3
channel,
conversion
Reg.
bit
sets
end
of
valid
byte
at
use
each
the
not
This
IBM
of
no.
7-1
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Page 45

EXAMPLE
PROGRAMS
INTRODUCTION
140
C=INP(&H221)
150
PRINT
160
NEXT
170
PRINT
180
NEXT
190
LOCATE
200
M$=INKEY$'
210
LOCATE
220
END
HEX$(8);"
X
Y
3,1,0,12
24,24,1,12
IF
";HEX$(C)
M$=""
THEN
'Read
base
'Print
'Get
'Do
'Set
previous
30
'If
'Else
and
low
high
three
next
cursor
then
+ 1
out
byte,
channel
no
read
stop
byte
at
the
low
readings
to
overwrite
data
keyboard
continue
16
channels
data-
byte
input,
7-2
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Page 46

EXAMPLE
INTRODUCTION
PROGRAMS
7.1.2
This
EXAMPLE
BASIC
number
indefinitely,
It
performs
previous
exit
the
program
system
10
20
30
40
50
60
70
80
90
A=INP(&H220)
100
110
120
130
140
150
160
170
180
190
200
210
using
CLS
INPUT
IF
N>15
LOCATE
FOR
FOR
OUT
LET
A=O
IF
A>=128
B=INP(&H221)
C=INP(
PRINT
NEXT
PRINT
NEXT
LOCATE
M$=INKEY$:
PRINT
LOCATE
END
PROGRAM
program
(0-15)
prompts
and
sampling
as
the
sample
data
will
block
program
run
their
"Enter
THEN
on
or
faster
BASCOM
Channel
190
3,1,1,12
Y=1
TO
16
X=1
TO
8
&H220,N
THEN
110
&H221)
HEX$(B);HEX$(C);"
X
Y
3,1,0,12
IF
M$=""
"Channel
Number
24,24,1,12
2
and
the
to
ELSE
ELSE
the
loops
printing
program
screen.
select
if
it
function.
Number
IF
90
THEN
out
user
a new
is
(0-15)";N
'Wait
desired
N<O
'Set
position
'16
'8
samples
'Select
sample
'Read
for
'If
'Read
'Read
";
'Do
'Set
previous
50
ELSE
'If
loop
of
for
on
that
out
1,
overwriting
Hit
channel.
compiled
for
user
THEN
190
cursor
lines
per
channel,
Status
FINISH
set,
data
valid
high
low
'Print
low
next
block
cursor
200
key
stop,
range-try
a
channel
channel
the
any
on
key
the
to
channel
ELSE
to
a
data
per
line
Reg.
bit
conversion
byte
byte
data
byte
of
to
overwrite
data
otherwise
again":
data.
the
to
This
IBM
input
40
known
block
trigger
high
data
done,
byte,
GOTO
20
7-3
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Page 47

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Page 48

APPENDIX A
This
the
appendix
DT2814.
BOARD
contains
ASSEMBLY
the
board
DRAWING
assembly
drawing
of
A-1
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Page 49

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Page 50

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Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com
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DATA
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DT2814
-~
01752
BOARD
__
ASSEMBL.
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Page 51

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Page 52

INDEX
A/D
A/D
Conversion,
Data
Register,
Accessories,
Accuracy,
Analog
Inputs,
Architecture,
Architecture
Assembly
Base
Address
Bipolar
Bipolar
Board
Drawing,
Gain
Offset
Assembly
Calibration,
Assumptions,
Bipolar
Bipolar
Equipment
Guidelines,
Interconnections,
Precautions,
Procedure,
Unipolar
Unipolar
Clock
Base
3-6
Compatible
2-6
Configuration,
Base
Clock
Address
Base
3-6
Input
Ranges,
Interrupt
Jumper
Summary,
Connection
4-1
Connections
Panels,
Connectors
.Control
Register,
Conversion
A/D,
Dynamic
5-7
Performance,
Equipment
Example
Programs,
Figures
5-7
1-1
2-2
2-1
5-1
and
Selection,
Adjust,
Adjust,
Drawing,
6-1
6-1
Gain
Adjust,
Offset
Required,
6-1
6-2
6-2
Gain
Adjust,
Offset
Frequency
Screw
3-4
Selection,
Frequency
3-5
Level,
to
IBM
to
Screw
4-4
and
Cables,
Required,
5-6
Operation,
A-1
6-4
6-3
6-4
Adjust,
6-2
6-2
Adjust,
Selection,
Terminal
Selection,
3-7
3-7
PC
Backplane,
Terminal
2-5
5-2
2-2
6-2
7-1
3-4
A-1
6-3
6-3
6-3
Panels,
3-4
5-1
List,
Initialization,
Input
v
Ranges,
5-7
3-5
Interconnections,
Interface
Interrupt
Jumper
Characteristics,
Level,
Summary,
3-7
List
Figures,
Tables,
Operation,
Overview,
v
vi
5-7
1-1
Physical/Environmental,
Pin
Assignments,
Power
Precautions,
Preface,
Programming
Programs,
Requirements,
Example
Example
6-2
vii
Sequence,
7-1
Program
Program
Register
A/D
Data,
Control,
Status,
5-6
5-2
5-4
Sequence
Programming,
Single-ended
5-8
Connection
4-6
Specifications,
Accuracy,
Analog
Inputs,
Compatible
Panels,
Connectors
Dynamic
Performance,
Interface
2-1
2-2
Screw
2-6
and
Characteristics,
Physical/Environmental,
Power
Thermal
Status
Requirements,
Characteristics,
Register,
Tables
List,
vi
4-1,
3-7
P1,
4-2
2-5
1,
7-1
2,
7-3
2-1
Terminal
Cables,
5-4
6-2
2-4
2-5
5-8
scheme,
2-5
2-2
2-4
2-5
2-5
2-2
Index-1
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Page 53

Thermal
Characteristics,
Trademarks,
Unipolar
Unipolar
2
Gain
Offset
Adjust,
Adjust,
6-3
2-2
6-3
Unpacking,
No
Apparent
Visible
Unpacking
User
Connection,
3-1
Damage,
Damage,
and
Conf~guration,
3-1
3-2
4-3
3-1
Index-2
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Page 54

READER'S
COMMENTS
Please
Tit
Docume-n~t~Nu-mb~e-r-,------------------------------------~-------
Did you
-----------------------------------~~----------------------
Did
well-organized?
Is
there
software
in
this
ahould
let
you
specify
find
errors
find
sufficient
products
manual?
it
be
placed?
the
title
in
this
Please
and document number
this
manual?
manual
make
documentation
which must be used
If
not,
what
..
If
understandable,
suggestions
on
with
material
of
this
eo,
specify
for
improvement.
associated
the
product
ia
missing,
manual.
by page.
usable,
hardware
described
and where
and
or
Please
represent
Please
Rame
Organizatio·~-----------------------------------------------
Street
City
Please
note
( )
( )
( )
( )
( )
( )
enter
the
I
Hardware
Systems
type
of
engineer
engineer
user/reader
that
Technician
Assembly language programmer
Bigher-level
language programmer
Occasional programmer (experienced)
your
name
and
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below.
you
most
nearly
_______________________________________ Date ____________ _
________________________
__________________________
mail
thia
aheet
Technical
tot
Publications
Data
Translation,
~~----------~~~~~------
state
__________
Zip
Code
Department
Inc.
____
__
100 Locke Dr.
Marlboro,
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MA
01752
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