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EVaRT 5.0 User’s Manual
Appendix B: Analog Input Hardware and Software
Which USB Device is Channels 1-32, which is 33-64?
The first device you plug in should be channels 1-32 in your EVaRT software. The second device should be channels 33-64 and so on for more devices. If you are not sure: When you connect to the Cameras in EVaRT
5.0.3 or later, the channel numbers (1-32) and the Serial Number of the
USB device are reported in the dialog box. The Serial Number for the
USB-6218 device is located on the bottom of the USB device.
Clock Wiring for Single and Multiple USB Devices
Eagle and Hawk cameras require a 2.7 kΩ pull-up resistor from +5 Volts
to the PFI-0 pin as shown
Figure B-9. Clock Wiring for Mutiple Devices
A Single Pull-up resistor with a 2.7 kΩ (or close) value will work for connecting up to 6 USB devices together as shown below. You need only to
connect PFI0 and D GND signals in parallel for clocking the multiple
USB Devices. A single pull-up resistor works for all devices.
USB 2.0 Cable Lengths
The USB-6218 comes with a one meter USB cable. It has been tested
with longer USB cable lengths up to 16 ft. (5 meters) and it works well
with either and any mix of cables.
B-11