Specifications

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3.3 Analog Input Connections
The PCI-1710/1710L/1710HG/1710HGL/1716/1716L supports both
16-channel Single-Ended or 8 differential A/D Input, however the
PCI-1711/1711L only supports 16 single-ended analog inputs. Each
individual input channel is software-selected.
Single-ended Channel Connections
The single-ended input configuration has only one signal wire for
each channel, and the measured voltage (Vm) is the voltage of the
wire as referenced against the common ground.
A signal source without a local ground is also called a “floating
source”. It is fairly simple to connect a single-ended channel to a
floating signal source. In this mode, the PCI-1710/1710L/1710HG/
1710HGL/1711/1711L/1716/1716L provides a reference ground for
external floating signal sources. Fig. 3-2 shows a single-ended
channel connection between a floating signal source and an input
channel on the PCI-1710/1710L/ 1710HG/1710HGL/1711/1711L/
1716/ 1716L.