Following the publication of my article "LPT:Analog! - A 12-bit A/D Converter Printer Port Adapter" (Circuit Cellar Ink, Issue 67, February 1996, 26-33), I received many inquiries regarding the commercial availability of the device.
I am happy to announce that ADNAV Electronics has introduced the LPT:Analog! v2.0, a 12-bit Analog-to-Digital adapter for the PC parallel printer port which sells for US $59.
This adapter is a very simple and convenient interface for acquiring analog signals directly on a PC at rates of up to 7,500 samples per second. Signal conditioning information is supplied, making it easy to collect data from analog-output instruments, sensors, 4-20 mA loops and many other analog signal sources.
Power for LPT:Analog! v2.0 is derived directly from the PC's printer port. The micropower design of the adapter's internal circuitry ensures that it can be used with virtually any desktop, laptop or notebook PC on the market. This, in conjunction with its small size (a shielded case measuring 2" x 2.4" x 0.7"), makes LPT:Analog! v2.0 ideal for PC-based data acquisition applications that require ultimate portability and flexibility.
LPT:Analog! v2.0 is supplied with software utilities that enable real-time display of acquired waveforms, ASCII-format data logging to disk, as well as high-resolution spectral analysis of acquired data. The source code (QBasic, C and assembly) for these utilities is included at no extra cost. In addition, software drivers, VisualBasic DLLs and programming examples are also provided.
For more information, please contact:
ADNAV Electronics 58 Chicory Ct. Lake Jackson, TX 77566