Current Test Terminal (Itest) - Measurement Computing USB-3102 User Manual

USB-3102 User's Guide
+
Floating Supply Floating Ext.
IOUTn+1 Supply
IOUTn+2
IOUTn+2
+
Floating Supply Floating Ext.
IOUTn+1 Supply
IOUTn+1
IOUTn+1
+
Floating Supply Floating Ext.
IOUTn+1 Supply
IOUTn
IOUTn
AGND
Connection with
grounded load
Refer to the manufacturer's information for the device being controlled for additional details.

Current Test terminal (ITEST)

connection (pin 51) is used with InstaCal to test the functionality of the analog current output
The
ITEST
(IOUT) pins. The ITEST connection circuit is shown in Figure 7.
Do not test more that one current output pin at a time. The
intended for test purposes only.
Grounded
Load
Figure 6. Typical analog current output circuit
Limit one channel
ITEST
IOUTn
Figure 7. Current output test circuit
IOUTn+2
IOUTn+1
IOUTn
AGND
Connection with
grounded supply
output is not adequate for application use. It is
ITEST
12
Functional Details
Floating Load
IOUTn+2
Floating Load
IOUTn+1
Floating Load
+
IOUTn
Grounded
External
Supply