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USB-TC-AI User's Guide
External components
The USB-TC-AI has the following external components, as shown in Figure 5.
1
2
Screw terminals
The screw terminals provide connections for thermocouples, voltage input, digital I/O, ground and power
output. Refer to the "Signal I/O ConnectionsError! Reference source not found." chapter beginning on page
10 for screw terminal descriptions.
USB connector
The USB connector provides +5V power and communication. No external power supply is required.
LEDs
USB-TC-AI has two LEDs –
The
Activity
The
Power
LED (bottom) turns on when the device is receiving power from the USB cable .
Power
The two
terminals are isolated (500 VDC) from the USB +5V.
+5V
Caution! Each +5V terminal is an output. Do not connect to an external power supply or you may damage
the USB-TC-AI and possibly the computer.
Screw terminal pins 1 to 26
Screw terminal pins 27 to 52
Figure 5.External component locations
and
Activity
Power
LED (top) blinks when data is transferred.
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3
LEDs: Activity (top) and Power (bottom)
4
USB connector
.
14
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Functional Details
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