National Instruments NI R Series Getting Started Manual page 7

Signal
AI+ Positive analog input signal connection
AI- Negative analog input signal connection
AISENSE Reference connection for NRSE measurements
AIGND Ground reference for the analog input signal
AO Analog output signal connection
AOGND Ground reference for the analog output signal
DIO Digital input/output signal connection
DGND Ground reference for the digital signal
EXTCLKIN External clock input source that can be used for source synchronous
acquisitions. The provided clock source must be stable and glitch-free.
GND Ground connection
Supply (+5 V ) 5 V power output connection for external devices
out
NC No connection
The PCIe-7857 is protected from overvoltage and overcurrent conditions.
Refer to the device specifications, available at
Note
information.
6 | ni.com | NI PCIe-7857 Getting Started Guide
Table 1. PCIe-7857 Signal Descriptions
Description
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