IOtech DAC488 Datasheet

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™
DAC488/4
®
12-Bit D/A Converter with Digital I/O & IEEE 488
Features
• Four 12-bit plus sign isolated D/A
converters
• Programmable range or auto ranging,
±1, ±5, or ±10 VFS
• Built-in 8192-point waveform buffer
with 1-kHz update rate
• Sequenced output based on either a
periodic interval or trigger condition
• Three trigger conditions: External,
TRG commands, & GET command
• 500V isolation from IEEE 488 common
& from other analog channels
• 8-bit digital input port & 8-bit digital
output port
IEEE 488 Data Acquisition Instruments
DAC488/4™ is an IEEE 488 to 12-bit plussign analog output converter. The unit
has four analog output channels that are
isolated from IEEE 488 common and from
other analog channels by up to 500V.
Each channel can be programmed for
full-scale output of ±1V, ±5V, or ± 10V.
You can program each channel for output
in increments of 1 part in 4096 plus sign.
Outputs can be specified in either volts or
bits from the IEEE 488 bus. A quickdisconnect terminal block provides
convenient signal connection.
An 8 Ksample waveform buffer allows you
to store waveforms for each channel with
a maximum update rate of 1 kHz per
sample. Each waveform can be output
in sequence, based on either a periodic
interval or one of three trigger conditions: an external trigger, a trigger command, or the group execute command
(GET) IEEE 488 bus command. Each port
can be triggered independently via any
of the trigger conditions.
tel: 440-439-4091
fax: 440-439-4093
The DAC488/4 includes all the features necessary to control analog devices from the IEEE bus
Up to 13 IEEE 488 devices
SCSI488/S
DAC488HR/2
Filter488
DAC488/4
IEEE
IEEE 488
controller
Calibration of the DAC488/4 is accomplished by storing calibration constants in
the unit’s nonvolatile memory. No mechanical adjustments of potentiometers are
required. Each channel has a separate calibration constant. Calibration can be accomplished automatically by connecting
the DAC488/4 to a Keithley 199™ scanning
digital multimeter. In this calibration mode,
the DAC488/4 becomes the system
332
DAC488
+- +- +- +CH1 CH2 CH3 CH4
8 digital 8 digital
outputs inputs
controller and automatically reads the
Keithley multimeter to obtain the calibration constants. The DAC488/4 can also be
calibrated by using an IEEE 488 controller
with any precision digital multimeter.
Eight bits of digital input and eight bits of
digital output are also provided. These are
TTL-level non-isolated lines that can be
programmed from the IEEE 488 bus.
sales@iotech.com
www.iotech.com
Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com
™
DAC488/4
Specifications & Ordering Information
Command Summary
Specifications
Command
Code
Trigger
@
Analog Output
Description
Commanded trigger. Triggers the
channels in the command trigger
mask (Tm).
Autorange
An
Enable/Disable autoranging for selected port.
A?
Returns current autorange setting.
Buffer Data
Brng,volts Write volts value in buffer location.
Brng,#sval Write bit value in buffer location.
B?
Returns the range and value at the
location pointer.
Control Mode
Cn
Direct mode trigger on value
command.
Digital Output
Dval
Outputs the value on the digital output port.
D?
Returns the current value of the
digital output port.
First Location
Floc,num Specifies first and number of location
used and number in the sequence
buffer.
F?
Returns the first and number of
locations used in the sequence buffer.
Offset Calibration Hval
Specifies the offset constant for
selected range.
H?
Returns the offset constant for
selected range.
Interval
Ival
Specify time interval used with the
waveform control mode.
I?
Returns the current interval.
Gain Calibration
Jval,val
Specifies the gain constant for both
polarities of the selected range.
J?
Returns the gain constants for
selected range.
Sequence Location Lval
Specifies the current sequence
location.
L?
Returns the current sequence
location.
Output Format
On
Select output format.
O?
Returns current output format
selected.
Port Select
Pn
Select DAC port n.
P?
Returns currently selected port.
Range Select
Rn
Select DAC range.
R?
Returns DAC volt range.
System Defaults
S0
Restores the factory default values to
NVRAM.
S1
Saves the current settings as default
values to NVRAM.
S2
Saves calibration constants to calibration NVRAM.
S?
Returns the last D command
executed.
Value Output
Vvolts
Write volts value for selected DAC
port.
V#val
Write bit value for selected DAC port.
V?
Returns current value for selected
port.
tel: 440-439-4091
fax: 440-439-4093
Number of Channels: 4
DC Output Voltage/Resolution
1V Range: ±1.0000V, 500 µV/bit
5V Range: ±5.0000V, 2.5 mV
10V Range: ±10.000V, 5.0 mV
DC Output Current: ±10 mA max
Accuracy (25 ±5˚C)
1V Range: ±0.05% ±1 mV
5V Range: ±0.05% ±3 mV
10V Range: ±0.05% ±10 mV
Temperature Coefficient: (±0.002% ±100 µV)/˚C; 0˚ to 20˚C, 20˚ to 30˚C,
30˚ to 50˚C
Channel-to-Channel Isolation: 500V max, 105 V-Hz
Channel-to-Digital Low Isolation: 500V max, 105 V-Hz
Connector: Quick-disconnect terminal block with screw connections
Digital I/O
Number of Inputs: 8 bits, TTL level compatible
Number of Outputs: 8 bits, selectable TTL level compatible or open collector
with 100 mA drive
Service Request Input: 1 bit, TTL level compatible
Connector: One 20-pin card-edge; mating connector supplied
IEEE 488 Specifications
Interface Subsets: SH1, AH1, T4, TE0, L4, LE0, SR1, PP0, RL0, DC1, DT0, C0, E1
Connector: Standard IEEE 488 connector with metric studs
General
Power: 105 to 125 or 210 to 250 VAC, 50/60 Hz; 20 VA max
Environment: 0˚ to 50˚C; 0 to 95% RH, non-condensing
Controls: Power switch, external dip switch for IEEE address
Dimensions: 425 mm W x 305 mm D x 45 mm H (16.75” x 12” x 1.75”)
Weight: 3.2 kg (7 lbs)
Ordering Information
Description
4-channel isolated analog output converter with mating
screw-terminal connector; analog output connector;
digital I/O port connector; and rack-mount kit
Shielded IEEE 488 cable, 6 ft.
333
Part No.
DAC488/4
CA-7-3
Related Products
Hardware
ADC488/16A
ADC488/8SA
DAC488HR/4
Personal488 Series
p. 324
p. 326
p. 328
p. 345
sales@iotech.com
www.iotech.com
Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com
IEEE 488 Data Acquisition Instruments
®
Artisan Technology Group is your source for quality
new and certified-used/pre-owned equipment
• FAST SHIPPING AND
DELIVERY
• TENS OF THOUSANDS OF
IN-STOCK ITEMS
• EQUIPMENT DEMOS
• HUNDREDS OF
MANUFACTURERS
SUPPORTED
• LEASING/MONTHLY
RENTALS
• ITAR CERTIFIED
SECURE ASSET SOLUTIONS
SERVICE CENTER REPAIRS
Experienced engineers and technicians on staff
at our full-service, in-house repair center
WE BUY USED EQUIPMENT
Sell your excess, underutilized, and idle used equipment
We also offer credit for buy-backs and trade-ins
www.artisantg.com/WeBuyEquipment
InstraView REMOTE INSPECTION
LOOKING FOR MORE INFORMATION?
Visit us on the web at www.artisantg.com for more
information on price quotations, drivers, technical
specifications, manuals, and documentation
SM
Remotely inspect equipment before purchasing with
our interactive website at www.instraview.com
Contact us: (888) 88-SOURCE | sales@artisantg.com | www.artisantg.com