Contec AI-1608VIN-USB Reference Manual page 28

Connect the 12 - 24VDC power supply (such as the AC adapter) to the product first, then

connect to a PC.
Do not turn on or off during the operation. When unplugging, unplug the USB cable first,
then disconnect the external power supply.
Do not plug or unplug the connector when the power is on.

When the 12-24VDC power supply in supplied, do not disconnect the 12-24VDC power supply

from the power supply connector.
When the product is not used, leave the 12 - 24VDC power supply (such as the AC adapter)

unplugged.
Connect the 12-24VDC power supply (such as the AC adapter) to the power supply connector

of the product first. When unplugging, unplug it from the power outlet side of the AC adapter
first.
Grasping the cable to remove the power supply connector of the 12-24VDC can break the wire.

Always grasp the connector to remove it.
Using the AC adapter in a heated state continuously affects its life.

Use the AC adapter not in a closed place but in a well-ventilated place to prevent the product

from being overheated.
Do not remove the power supply connector [MC1,5/3-ST-3,5] that is attached to the AC

adapter.
If you use this product in a noisy environment, connect the FG pin of the product to the

ground (earth) to stabilize the operation.
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Setup
AI-1608VIN-USB / AI-1608AIN-USB Reference Manual
CAUTION
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