Net-PAD - External Ethernet A/D Converter

August 2014: Net-PAD has been discontinued from production.Net-PAD


Net-PAD is an external high resolution A/D converter for chromatography data acquisition. Net-PAD communicates with a PC over Ethernet through a TCP/IP protocol. Clarity Chromatography Station, configured with Net-PAD converter, enables users to acquire chromatography data from distant instruments without the necessity of installing additional cables. Net-PAD is compatible with any GC, HPLC, GPC, IC, CE system with standard analog output. The Clarity Chromatography Station can handle any combination of available DataApex converters (internal PCI, external USB and TCP/IP).

Next steps


  • Cable p/n KB72
  • LAN cable p/n SK10
  • Supply adapter (6V)

Technical data:

Converter type 24 bit integrating, sigma - delta
Analog inputs symmetrical, mutually isolated
Number of A/D channels 2
Input range unipolar and bipolar, each channel independentely 156, 1250 or 12560 mV
Input impedance 1 MOhm
Conversion time 50 Hz rejection: 10, 20, 40, 80, and 160 ms
60 Hz rejection: 8.3, 16.7, 33.3, 66.7, and 133.3 ms
Non-linearity < 0.0007 %
Temperature dependence < 10 ppm/°C
Digital inputs 4 TTL (5 V), the first two can be controlled using the built-in opto-electronic unit (2-5 mA current)
Digital outputs 8 TTL (5V, maximum current load 30 mA), the first four are equipped also with contact relays (100 V/0.5 A)
Auxiliary ports 2x RS232 serial communication
Dimensions 133 x 105 x 21 mm (W x H x D)
External power supply 6 V/250 mA

Network Communication:

Protocol TCP/IP
IP Address configurable
Ethernet (LAN) 10Mb/sec
Connector RJ-45 (twisted pair)

Combinations with obsolete operating systems:

Windows 10
(32 and 64 bit)
Windows 8.1
(32 and 64 bit)
Windows 7SP1*
Net-PAD Clarity (from 6.2)
Clarity (from 4.0.3)

* From Clarity 3.0 the 64-bit OS is supported.

Possible combinations:

Windows VistaSP2* Windows XPSP3 Windows 2000
Net-PAD Clarity (until 7.2) Clarity (until 7.4.1) Clarity (until 3.0)

* From Clarity 3.0 the 64-bit OS is supported.

A/D Converters

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Last updated: 2018-07-16 | webmaster