U-PAD - External USB A/D Converter
U-PAD - External USB A/D Converter
U-PAD is an external 24-bit A/D converter for the USB.
The U-PAD is a predecessor of the U-PAD2 A/D converter.
Discontinued from sale as of 2007.
U-PAD is an external measuring unit for the CSW32 and Clarity stations designed for acquiring data from any chromatograph. U-PAD uses a USB communication channel and thus is directly powered by the PC.
The unit can be connected or disconnected anytime without having to shut down the computer. The unit contains two independent channels, with the latest 24-bit A/D converters, capable of higher effective resolution, especially at higher frequencies and at lower voltage ranges. The input connector is compatible with all DataApex A/D converters.
Replacement options
Specification
| U-PAD | |
| Converter type | 24 bit integrating, sigma - delta |
| Analog inputs | differential |
| Number of channels | 2, isolated from USB, (inputs share common ground) |
| Input range | unipolar and bipolar, each channel independently 156, 1250 or 12 585 mV |
| Input impedance | 1 MOhm |
| Integration frequency (Sample Rate) | 50 Hz rejection: 6.25, 12.5, 25, 50, and 100 Hz 60 Hz rejection: 7.5, 15, 30, 60, and 120 Hz |
| Non-linearity | |
| Temperature dependence | |
| Digital inputs | 2 TTL (5 V), can be controlled using the built-in opto-electronic unit (5 mA current) |
| Digital outputs | 2 TTL (5V, maximum current load 20 mA), also as relay contacts(100 V/0.5 A) |
| Dimensions | 100 x 55 x 16 mm |
| Weight | 110 g |
| Power supply | from the PC via the USB cable |
Effective resolution for various acquisition speeds and input ranges:
| 12.585 V | 1 250 mV | 156 mV | |
| 6.25 Hz | 22 bit | 22 bit | 20 bit |
| 12.5 Hz | 21 bit | 21.5 bit | 20 bit |
| 50 Hz | 20.5 bit | 21 bit | 19 bit |
| 100 Hz | 20 bit | 20 bit | 18.5 bit |
Possible combinations:
| Windows 10* | Windows 8.1* | Windows 7SP1* | |
| U-PAD | Clarity Clarity Lite (both from 6.2) | Clarity Clarity Lite (both from 4.0.3) | Clarity Clarity Lite |
* 64-bit OS versions are not supported.
Combinations with obsolete operating systems:
| Windows VistaSP2* | Windows XPSP3 | Windows 2000 | |
| U-PAD | Clarity Clarity Lite (until 7.2) | Clarity , Clarity Lite CSW32 (until 7.4.1) | Clarity (until 3.0) Clarity Lite (until 3.0) CSW32 |
* 64-bit OS versions are not supported.