National Instruments TC-2190 Installation Manual

TC-2190 A
M
INICONNECTORS
Introduction
Conventions
»
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DAPTER WITH
I
NSTALLATION
This installation guide describes how to install and connect thermocouples
and digital I/O signals to the TC-2190 adapter with thermocouple
miniconnectors to use with the NI USB-4350, NI PXI-4351, and
NI PCI-4351 data acquisition (DAQ) devices.
The TC-2190 adapter consists of a shielded box with 14 miniconnectors
that you can use to connect the thermocouples to the NI 435X for USB,
PXI, and PCI. This adapter has two 68-pin connectors—one on the front
and one on the rear. You can use either of the two connectors to connect the
TC-2190 to the NI 435X using an SH6868 shielded cable (recommended)
or an R6868 ribbon cable. You can also access the eight digital I/O lines
and the digital ground of the NI 435X using the spring terminal blocks.
This adapter is designed specifically for ease of use with thermocouples.
It features isothermal construction to minimize the temperature gradients
across the thermocouple junctions and a high-accuracy thermistor
cold-junction temperature sensor.
The TC-2190 connects to all the digital I/O lines on the NI 435X and all but
two analog input channels (CH)—CH0 is dedicated to the cold-junction
sensor and CH1 is dedicated to auto-zeroing circuitry. Refer to the
NI 435X User Manual for further details on the cold-junction sensor and
auto-zeroing circuitry.
The following conventions are used in this guide:
The » symbol leads you through nested menu items and dialog box options
to a final action. The sequence File»Page Setup»Options directs you to
pull down the File menu, select the Page Setup item, and select Options
from the last dialog box.
T
HERMOCOUPLE
G
UIDE
October 2002
321674C-01