™
DAC488HR
®
16-bit D/A Converter with Digital I/O & IEEE 488
the smart approach to instrumentation™
Features
• Tw o or fou r isolated 16-bit ou tp u ts
• 100-kHz/ ch an n el u p d ate rate
• 480 Ksam p les/ ch an n el m ax bu ffer
• ±1, ±2, ±5, & ±10 VFS p rogram m able
u n ip olar & bi-p olar ou tp u t ran ges
• On e-sh ot, step , b u rst, w aveform , &
con tin u ou s ou tp u t m od es
• GET, ex tern al TTL, IEEE com m an d ,
& tim e even t trigger sou rces
• ASCII, bin ary, in teger decim al, & h exa-
decim al data form ats
• Stan d ard sin e, sq u are, & trian gle
w aveform gen eration
The versatile DAC488HR functions as a voltage source, function generator, and an arbitrary
waveform generator
• 500 VDC ch an n el-to-ch an n el isolation
• Eigh t d igital in p u ts & eigh t d igital
ou tp u ts
• 100 m A h igh -cu rren t ou tp u ts
• LabVIEW® d rivers
Up to 13 IEEE 488 devices
SCSI488/S
DAC488HR/2
Filter488
The DAC488HR™ is an IEEE 488 program-
mable 16-bit D/A converter. It can be
configured with either two or four output
channels,whichareopticallyisolatedfrom
each other and from IEEE 488 common
by up to 500 VDC. Each channel is inde-
pendently programmable for 1, 2, 5, or 10
VFS unipolar or bipolar output, specified
as either bits or volts in ASCII, integer,
hexadecimal, or binary format. Multiple
output modes, multiple clock and trigger
sources, and buffer management enable
the DAC488HR to function as a precision
voltage source, a function generator, or
an arbitrary waveform generator.
DAC488HR
DAC488HR
IEEE
+ - + - + - + -
8 digital
inputs
8 digital
outputs
CH1 CH2 CH3 CH4
IEEE 488
controller
2- or 4-channel 16-bit,
isolated 100-kHz
analog outputs
Trigger Modes
Burst Mode. Functionallyidenticaltostep
mode, except that waveforms rather than
single values are output.
The DAC488HR’s five trigger modes sup-
port a wide variety of applications.
Waveform Mode. Based on recognition
of a trigger, the waveform buffer is output
for a specified number of cycles.
BusControlMode. Eachportisprogrammed
to output a specified value under direct
controlfromtheIEEE488bus. Thismodeis
useful for maintaining an initial value until
a specified condition occurs.
Waveforms captured by IOtech’s 16-bit,
100-kHz ADC488A series (see p. 243) digi-
tizers can be edited and transferred to the
DAC488HR for output. The ADC488A™
series and DAC488HR in combination
form a powerful waveform I/O system.
Typical applications include transducer
simulation, disk drive testing, vibration
analysis, and materials testing.
Continuous Mode. Data is continuously
input from the IEEE 488 bus and output to
ananalogchannelatratesupto200Kbytes/s
upon the detection of a specified trigger.
Thismodeisideallysuitedforaudio,speech,
and other applications that require long
duration waveforms.
Step Mod e. When a specified trigger is
detected, a value is output from the
buffer, and the DAC488HR is automati-
cally re-armed until the specified buffer
count is reached. The last specified buffer
value is held as the output.
Q U I C K F I N D
tel: 440-439-4091 fax: 440-439-4093
sales@iotech.com
www.iotech.com
248
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