ANALOG
DEVICES
IBMPCIWAT
Compati
Analog
Boar
0utput
FEATURES
4 or 8 Analog Output Channels
12-Bit Resolution
0 to +10V or rlOV Output Range
GENERAL
Gompatible to IBM PcDc/ATi or Equivalent
Optional Screw Tsrmanation Panels
SOFTWARE
Callable Machine Language Routines for Digital UO
High Level Language Support
BASIC, PASCAL, C, FORTRAN and TURBO
PASCAL running under PC-DOS
Calibration Routines
APPLICATIONS
Precision Voltage Outputs
Position and Motion Gontrol
Generate Set-Point Values for Loop Controllers
GENERAL DESCRIPTTON
The RTI-802 andog output board, an lBM-compatible menber
of the RTI@ Interface family, comesin two versions: s 4-6hannel
ETI-8024 board) and an 8-channel board (RTI-802-8) for
high-channel capacity applications. The analog outputs are user
selectablefor 0 to lOV or -r lOV and are protected from shofts
to ground. There is one l2-bit D/A converter per channel for
maximum update rates.
The RTI-802 maps into the VO channel structure as 4 consecutive
bytes, addressableto any unoccupied ,l-byte boundary via a DIP
switch. The board contains a dc/dc converter and is powered
from a PC's + 5V supply. It installs in one of the long slots in
the IBM PC/XT/AT.
Typical applications for the RTI-802 include direct conuol valve
positioning or as a stimuli in test applications, utilizing a variable
voltage oulput. The board can dso be used for analog control in
a processor laboratory application where material transfer rates,
fluid flow, trcwer consumption, motor specd, temperature levels,
etc., are to be controlled. In a supervisory control applications,
the generatedandog outputs are used to provide set points to
analog loop controllers.
ANIILOG OUTPUT
The RTI-802 contains four or eight l2-bit D/A converterswhich
produce a constant analog output voltage proportional to the
digital code.
BUS INTERFACE
The RTI-802 is mapped into the PC bus UO channel strruc$re
as 4 consecutivebytes, DIP switch selectableto any unoccupied
4 byte boundary.
P'OWER SUPPLY
The PC bus + 5V supply is all that is required to power the
RTI-802 board. An on-board dc/dc converter translatesthe
+ 5V bus supply into a low noise, isolated -+l5V power required
for the analog circuitry.
ACCESSORIES
Accessoriesavailableinclude ribbon cablesand screw tcrmination
panels. These cards can be interfaced to Analog Devices 38
family of signal conditioning products to isolate the analog
output.
RTI ir a rcgietcrcd trademarl of Aaalog Dcviccs, Inc.
rIBM PCJXT/AT is a tradcnat* of latenationd
Bueiress Maehincs
Corp.
Information furnished by Analog Devicesis believedto be accurate
and reliable.However,no responsibilityis assumedby Analog Devices
for its use;nor for any infringementsof patentsor other rightsof third
partieswhich may result from its use. No licenseis grantedby implica
tion or otherwiseunder any patent or patent rightsof AnalogDevices.
Two TechnologyWay; Norwood, MA 02062-9106U.S.A.
Tel:617/329,4700
Twx: 710/394-6577
Telex:174059
Cables:ANALOGNORWOODMASS
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ELECTRICAL
Number of Analog Output Channels
RTI-802-4
RTI-802-8
AnalogVoltageRangesr
D/AResolution
AnalogOutput Accuracy
D/A InputCodesl
Differential Nonlinearity
Output SettlingTime (ConverterOnly)
TemperarureCoefficients
Gain
Offset
OutputProtection
4
8
O t o+ 1 0 V , + l O V @ 2 m A
12Bits (4096Counts)
+0.02o/o
Binary, Two's Complement
-+ILSB max
20ps(to -r I/2LSB, lOV Step)
+ I 5ppmfC of Full-ScaleRange
-+25p.Yl'C
Short-to-Ground, Continuous
SYSTEMCONFIGURATION
Bus ResourceUtilization
Address
Compatiblity
OccupiesOneLong Slotin theIBM ExpansionBus
I/O Location(4 Bytesin 512Byte Block)
SwitchSelectable
IBM, Compaq,or Other lBM-CompatibleBackplanes
PHYSICAL/ENVIRONMENTAL
I/OConnector
Dimensions
Operating Temperature Range
StorageTemperatureRange
Relative Humidity
25-Pin Male Ribbon Cable
13.8"(35cm)x 5"(12.72cm)x l" (2.54cm)
0to +70'C
-25'Cto +85"C
Up to 90%(Noncondensing)
POVER
PowerConsumption
+5Vdc@0.5amp
NOTES
rfumper selectable.
Specifications subiect to change without notice.
12-8lt
D/A
CONVERTEF
12-BlT
D/A
CONVERTER
o/A
LATCHES
STROBES
sTROS€S
STROBES
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Figure 1. RTI-802BlockDiagram
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