1 Colibrick acquisition device
Clarity Hardware
1.1 Front panel of the Colibrick device
The front panel contains LED indicators indicating the status of the device.
Fig 2: Front panel of the Colibrick
Ready (orange) LED status
Indicates correct installation.
Data (blue) LED status
Indicates connection to the chromatography data station.
Digital Input (green) LEDs status
LED ON - the input status is High (logical "1") or not connected.
LED OFF - the input status is Low (logical "0") or connected to the ground
(GND).
Digital Output (red) LEDs status
LED ON - the output status is High (logical "1"), the relay contact is
opened.
LED OFF - the output status is Low (logical "0"), the relay contact is closed.
Note:
The above is true provided that the device is used within the specifications
in Colibrick A/D Converter datasheet.
1.2 Rear panel of the Colibrick device
The rear panel contains the
USB
connector for connecting to the
PC
and
the
INT7 compatible connector
for connecting with the chromatograph.
Fig 3: Rear panel of the Colibrick
1.3 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.
In principle there are three types of A/D converters – sampling, integrating
and ΔΣ (
Delta-Sigma
- with continuous integration).
The
Colibrick
converter uses Delta-Sigma integration.
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