ASTRO-PHYSICS GTOCP4 Manual - Page 10

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USB – You MUST download and install the FTDI Driver BEFORE

To use the USB port on the GTOCP4, you MUST install the FTDI driver onto your computer. It is

important that you install this driver BEFORE you connect the GTOCP4's USB port to your computer

for the first time! The latest driver can be found at http://www.ftdichip.com/drivers/vcp.htm. Note also

that the FTDI USB to serial devices are all uniquely serialized. Each one will be assigned its own COM

port that will be remembered through power-cycles.

As of early August 2016, this is a screen shot of the webpage that contains the link to the driver. The

arrow middle right in the screenshot below points to the file you must download. (Ignore the Mac OS X

Driver.)

Once driver installation is completed, connect the USB cable from the computer to the GTOCP4. The

GTOCP4 does NOT need to be powered up or connected to the mount for this. Allow windows to

identify the new device and assign a COM port number to the FTDI unit in the GTOCP4. Find the COM

port number for this device in Control Panel. This is the COM port number you will use for USB

connections. From this point forward, you can think of the USB port on the GTOCP4 as simply another

COM port.