User Manual

6
Chapter 1
Introducing the USB-204
The USB-204 is a USB 2.0 full-speed device that provides the following features:
 Eight single-ended 12-bit analog inputs
 500 kS/s max sample rate
 Eight individually configurable digital I/O channels
 32-bit counter input
 Digital trigger input
 External pacer clock input
 Internal/external pacer clock output
 User voltage output
 Two screw terminal banks for field wiring connections
The USB-204 is powered by the +5 V USB supply from your computer; no external power is required. A USB
cable is shipped with the device.
Functional block diagram
Device functions are illustrated in the block diagram shown here.
Figure 1. USB-204 functional block diagram