Making power and usb connections – Measurement Computing IOtech 640 Series User Manual
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5-4 Configuring USB Models 640u & 650u
889793
640 & 650 Series
Reference Note:
Adobe PDF versions of user manuals will automatically install onto your hard drive as a part
of product support. The default location is in the Programs group, which can be accessed
from the Windows Desktop. You can also access documents directly from the data acquisition
CD via the <View PDFs> button located on the CD’s opening screen.
Contact the factory or your service representative in regard to USB connectivity if
your operating system is other than Windows 2000 or Windows XP.
Making Power and USB Connections
1. If using an optional TR-2U power supply, connect it to the 640 or 650 unit’s External Power
(EXT PWR) connector; then plug the TR-2U into an outlet which supplies 90 to 264 VAC.
Do not connect the CA-179-x USB cable until after the Power Supply is supplying power to the
640u or 650u. (See following note.)
The use of a TR-2U is optional. If using one, be sure to supply power from the TR-2U to
the 640u or 650u before connecting the USB cable to the computer. This allows the 640u
[or 650u] to inform the host computer (upon connection of the USB cable) that the unit
requires minimal power from the computer’s USB port. When removing the unit from the
PC, the TR-2U power cable must be removed after the USB cable is unplugged.
2.
Use a CA-179-1 (or -3, or -5) USB cable to connect the 640u or 650u device to a USB2.0 port on the
computer. USB2.0 port is required.
3. Follow the screen prompts as directed.
LED Note: 640 and 650 Series modules each have 2 LEDs on their front panel.
The LEDs function as follows:
Power LED: The “Power” LED blinks during device detection and initialization; then remains on solid
as long as the module has power. If there is insufficient power the LED will go off.
Active LED: This LED is on whenever active communication is taking place between the 640 [or 650] and
the host PC. Note that the Active LED will be on solid during a data acquisition.
The use of a TR-2U
is optional.