INT7 A/D Converter
1 INT7 Acquisition card
1 INT7 Acquisition card
This manual describes the use of the
INT7 A/D Converter
with the
Clarity
software ver.
2.7 and later
.
INT7
is an internal 24-bit A/D converter card that measures the voltages of
chromatographic and electrochemical detectors.
Fig 1: INT7 A/D converter
Brief technical overview
Up to 4 dataacquisition channels on one card (one and two channel
versions are also available).
The channels are completely independent sigma delta integrating A/D
converters, used for processing positive and negative voltages.
4 digital inputs.
8 digital outputs. The first four are also designed as relay contacts.
PCI Slot.
Excellent reliability and temperature stability.
The
INT7
card of integration converters is a modernized successor of the
PCI card INT5.
1.1 A/D Converter types in general
Prior to collecting and processing the chromatographic signal by a
computer, the analog signal of the detector must first be converted to
digital form using an analog/digital (A/D) converter.
In principle, there are three types of A/D converters –
sampling
,
integrating
and
δΣ (Delta-Sigma)
- with continuous integration). The
INT7
card uses Delta-Sigma integration.
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