DataApex UPAD2 External Measuring Unit

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U-PAD2

U-PAD2 is an external 24-bit A/D converter that measures the voltages of chromatographic and electrochemical detectors. Integration frequency up to 400 Hz enables Fast GC application.

U-PAD2 uses the USB communication channel and thus is directly powered from the PC. The unit can be connected or disconnected anytime without the necessity to switch the computer off. The input connector is compatible with the internal INT7 board.

U-PAD2 is a modernized successor of the successful U-PAD A/D converter.

	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 12560 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	< 0.0015 %

Temperature dependence	< 10 ppm/°C

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

	U-PAD

Effective resolution for various acquisition speeds and input ranges:

	10 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
	10 V	1 250 mV	156 mV

Possible combinations:

	WIN XP	WIN 2000	WIN NT	Win 98, Me
U-PAD	Clarity Clarity Lite Clarity EA	Clarity Clarity Lite Clarity EA	X	X
	WIN XP	WIN 2000	WIN NT	Win 98, Me

A/D CONVERTErs

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