ADLINK USB-1903 - Manual (Page 43)

Hardware Information 29
USB-1900 Series
The negative end of the differential pair is connected to the sys-
tem ground after current-to-voltage conversion.
Figure 2-19: Current Input
NOTE: NOTE:
USB-1903 includes a differential amplifier in the front-end circuit
providing support for common mode voltage of current source
up to ±24 V.
249.5 Ÿ