eDAQ Quad Tc/mV, Руководство пользователя

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Quad pH/mV Amp 15
A P P E N D I X A
A
Technical Aspects
This appendix describes the some of the important technical aspects of
the Quad Tc/mV Amp. You do not need to know the material here to
use the Tc/mV Amp. Please remember that user modification of the
equipment voids your rights under warranty.
Quad Tc/mV Amp Operation
The Quad Tc/mV Amp, and other eDAQ Amps, have been designed to
be used with an
e-corder system. The Tc/mV Amp provides:
• high impedance, electrically isolated inputs suitable for direct
connection to most thermocouples;
• cold junction compensation;
• software controlled filtering of the signal;
• software selectable gain ranges.
Technical Description
As with other eDAQ Amps, all internal functions of the Quad Tc/mV
Amp are controlled from the
e-corder by sending information on a
special communications connection called the I
2
C (eye-squared-sea)
bus. This connection supplies power to the eDAQ Amp as well. eDAQ
Amps are connected to the analog input channels of the
e-corder via
BNC-to-BNC cables, through which the amplified and filtered signal is