U-PAD2 A/D Converter
1 U-PAD2 acquisition device
1 U-PAD2 acquisition device
This manual describes the use of the
U-PAD2 A/D Converter
with the
Clarity
software ver.
2.7 and later
.
U-PAD2
is an external 24-bit A/D converter that measures the voltages of
chromatographic and electrochemical detectors. It is designed for
acquisition of data from any chromatograph for the
Clarity
station.
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 of switching the computer off.
Fig 1: U-PAD2
Brief technical overview
2 data acquisition channels jointly isolated from USB ground
2 digital inputs
2 digital outputs also designed as relay contacts
USB interface
excellent reliability and temperature stability
1.1 Side panel of the U-PAD2 device
The side panel contains
USB
connector and
green LED
indicating the
status of the device.
Fig 2: Side panel of the U-PAD2
Green LED status
Blinking
– device is
IDLE
Steady light
– at least one channel is acquiring data
1.2 A/D converter types in general
Prior to collecting and processing the chromatographic signal by a
computer, the analog signal of the detector must be first converted to a
digital form by an analog/digital (A/D) converter.
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