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USB Cables
The IMX8 Multiplexer connects to the computer using a standard High Speed USB A/B cable. A suitable cable
was shipped with your IMX8 Multiplexer. If this cable is lost, you can get a replacement at almost any computer
retailer. The replacement cable should be rated for USB 2.0 High Speed USB operation.
An A/B USB cable has different connectors on each end. The end with a wider, rectangular connector plugs
into a USB port on your computer (or a similar port on a USB hub). The end with a nearly-square connector
plugs into the USB port on the rear panel of the IMX8 Multiplexer (see Figure 3-2).
The USB connection can be "hot-plugged". This means that both the computer and the IMX8 Multiplexer can
be powered up before the USB cable is plugged in. Unlike many other instrument system connections, you
need not power down the system before plugging in the USB.
You may also safely remove the USB cable without powering down the IMX8 Multiplexer and your computer.
Be aware however, that this may have undesirable consequences if the system is currently taking data or
performing an electrochemical experiment.
Front Panel USB LED
The front panel USB LED provides a simple test of two aspects of normal IMX8 Multiplexer USB operation. It
has three normal states:
Unlit
The USB cable is disconnected, or the USB connection is disabled by the host computer.
Continuous
A valid cable connection has been made and the IMX8 USB processor is receiving power
green
from the USB cable.
Valid USB messages are being transferred between the computer and the IMX8
Flashing yellow
Multiplexer.
A software download is in progress, or a USB communications error. Do not turn off the
Continuous red
IMX8 Multiplexer.
The flashing state only occurs when Gamry Instruments application software is running.
The firmware update process is described later in this chapter.
Installation
Figure 3-2
Rear Panel of the IMX8 Multiplexer
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