ADLINK PCI-9527 - Manual (Page 31)

Getting Started 19
ADLINK Technology Inc. PCI-9527
Copyright 2008 User’s Manual
2.5.3 Analog Output Connection
If the DUT inputs are ground-referenced, the differential output
mode can be used for the elimination of measuring errors which
caused by ground loops.
If the DUT inputs are in a floating system (ex. a floating earphone),
setting to pseudo-differential output mode will provide a reference
ground connected to the positive output of the BNC through a 50
Ω resistor.
DUT Input Reference Type AO Channel Configuration
Floating Pseudo
Differential
Ground-Reference Differential
Table 2-2: Analog Output Connection