BNC-2115 Installation Guide
6
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Measuring Ground-Referenced Signals
To measure ground-referenced signals, move the switches to either
the floating or ground-referenced source position. However, for best
performance, use the ground-referenced source position labeled GS to
avoid ground loops. Refer to your DAQ device documentation for more
information on measuring floating and ground-referenced signals.
The BNC-2115 connectors AI <16..55> correspond to the device
differential analog channels 16 to 55.
Table 1.
Configuration Summary
BNC-2115 Switch
Configuration
Signal Source Types
Floating Source
Ground-Referenced Source
Floating Source
(FS)
Ground-
Referenced Source
(GS)
+
–
Signal
Source
BNC-2115
DAQ Device
(Differential Input
Mode)
AI GND
+
–
Recommended
+
–
Signal
Source
BNC-2115
DAQ Device
(Differential Input
Mode)
AI GND
+
–
Not Recommended
+
–
Signal
Source
BNC-2115
Improper Configuration
DAQ Device
(Differential Input
Mode)
+
–
AI GND
+
–
Signal
Source
BNC-2115
DAQ Device
(Differential Input
Mode)
AI GND
+
–
Recommended
