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There are other A/D systems that interface to the PC printer port. I have not
developed code for any of these systems. Here are some that I have found.
Note, costs may vary from what I mention here.
Name/Source |
Description |
| PC Data Acquisition kit 6093-KT (www.mpja.com) |
16-digital inputs, 11-multiplexed analog inputs (10-bit A/D),
8-digital outputs, 1-analog output. Cost about $125. |
| 12-bit resolution Data Acquisition kit 8418-KT (www.mpja.com) |
4-digital inputs, 8-multiplexed analog inputs (12-bit A/D),
4-digital outputs. Cost about $55. |
| Computer operated 8-channel A/D converter kit 5293-RB (www.mpja.com) |
8-multiplexed analog inputs (8-bit A/D). Cost about $80. |
| TMCPort modules. Various configurations (www.lptek.com) |
8-channel (8-bit and 12-bit systems). These systems
require a parallel port interface board, in addition to the basic systems. Digital
I/O, Counter/Timer, and Analog output systems are also available. Prices vary
depending on configuration. LPTek furnishes an ActiveX OCX and drivers for use with
Visual Basic® and other Windows application languages. |
| DacBook. Probably the highest performance, and highest
cost, parallel port systems (various models). (www.iotech.com) |
100 KHz A/D converter, 12-bit (/100 series) or 16-bit (/200
series). 100K reading/s sampling & real-time storage-to-disk. 8
differential- or 16 single-ended inputs, expandable to 256 channels. Channel/gain
sequencing at 10 µs intervals, including up to 256 expansion channels. x1, 2, 4, or
8 programmable gain (other gains available with option cards). 512-location scan
memory for user-defined channel/gain sequencing of up to 256 channels. Triggerable
from analog, digital, or software, including pre-trigger. 24 general-purpose digital
I/O lines, expandable to 192. 16 high-speed digital-input lines, scannable at up to
100 KHz. Five programmable 16-bit counter-timers. IOtech provides DaqBook/260
driver support for Visual Basic®, C++™, & Delphi™
for Windows™ 95/98/NT; Visual Basic & C++ for Windows™ 3.x;
QuickBasic™, C™, & Pascal™ for DOS;
and DASYLab®
& LabVIEW® |
| ADIO12. An
8-channel, 12 bit resolution, parallel port data acquisition module. (www.bb-elec.com) |
Each channel is independently software
programmable at the following voltage ranges: 0 to +5V, 0 to +10V, -5V to +5V, -10 to
+10V. It has four TTL digital inputs and one TTL digital output. Cost about $95. |
| PPIO-AIO8. An 8-channel, 12 bit
resolution parallel port analog/digital I/O board. (www.computerboards.com)
Other parallel port boards that may be of interest are PPIO-CTRO6 a
counter/timer board (Six 16-bit counters (two 8254 chips)
12-Bits digital I/O), and PPIO-DIO24H a 24-channel, high-drive capability,
digital I/O board.
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Use on LPT1, 2, 3, 4. Eight 12-bit A/D
channels. 7 digital I/O bits. CIO-EXP-16/32 compatible. Input
resolution: 12-bits (1 in 4096)
Input ranges: ±10V, ±5V, 0-10V
Range selection: Switch selectable
Max sample rate: 3 KHz
Trigger/timing: software polled
Number of digital I/O bits 7-bits TTL, 4 out, 3 in
Includes InstaCal ® , installation, calibration and test software.
Supported by UniversalLibrary ® (provides programming language support
for all DOS and Windows languages). Also supported by most third party,
high-level data acq. programs.
Prices for these boards range from US$100 to US$200. |
| e-Lab, a complete lab bench in a
"box." This product from Mission Technology is easy to use
in VB applications, and is quite low cost for the features provided. $500.
(www.mission-technology.com) |
Consists of a two-channel scope, DMM, signal
generator (up to 4 MHz), a frequency counter, and a triple-output power
supply. The scope can sample at 50 M S/s, and stores 32K
samples. Sensitivity ranges from 5 V/div to 5 mV/div with a time
base that ranges from 10 mS/div to 0.1 uS/div. The power supply can
provide 5 V @ 350 mA and 0-8 V @ 200 mA. The e-lab also provides
three digital outputs for synchronization and control. |
| Omega
Engineering has a huge number of products for industrial automation.
Parallel versions are available for data logging and other applications
that require limited performance. |
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| Pico
Technology Limited has a series of data acquisition products, both
software and hardware. |
The hardware ranges from low-cost ADC-10/12 and
ADC 40/42 (8-bit and 12-bit respectively, single and dual-ended inputs) data
loggers; to ADC-11/22, 10-bit units that provide 11 and 22 input channels,
respectively. The ADC-16 is an 8-channel, 16+ bit unit. Software
is provided, as are drivers and examples for a variety of programming
languages, including Visual Basic. Costs range from about $120 to
$500. Of special interest to some will be the
Pico oscilloscope and
spectrum analyzer products. These interface to the PC using the
printer port, and provide high sample rates and both 8-bit and 12-bit
resolutions. |
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