Figure 6. Connecting Floating Differential Signals to the NI USB-7846R OEM Device
+
V 1
–
Analog Output
The NI USB-7846R OEM device provides connections for eight analog output channels. Each
channel has an AO pin and AOGND pin to which you can connect a load.
Digital I/O
The NI USB-7846R OEM device provides connections for 48 digital input/output (DIO)
channels. Connector 1, Connector 2, and Connector 3 contains 16 low-speed channels that can
run up to 10 MHz signal frequencies. Each connector has selectable logic levels that you can
configure as 1.2 V, 1.5 V, 1.8 V, 2.5 V, or 3.3 V. You can configure each channel as input or
output.
AI+
1 MΩ
Resistor
AI–
1 MΩ
Resistor
AISENSE
AIGND
Figure 7. Connecting a Load
DAC
NI USB-7846R OEM
Overvoltage
Protection
Overvoltage
Protection
Overvoltage
Protection
AO
AOGND
NI USB-7846R OEM User Manual | © National Instruments | 9
ADC
PGIA
NI USB-7846R OEM
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