![background image](http://html1.mh-extra.com/html/national-instruments/ni-9870/ni-9870_getting-started-manual_3576038012.webp)
Figure 3. Powering Multiple Modules from a Single Power Supply
Red (+)
Black (–)
NI P/N 198303-XX:
Male Microfit
Y-Adapter
NI P/N 198159-XX:
Female Microfit
Pigtail
V+
V–
Any 8 to 28 V
Isolated
Power Supply
NI 9870 Hardware Overview
The NI 9870 has four full-featured, independent RS232 DTE
ports that are isolated from the other modules in the system. Each
port is fully compatible with the ANSI/EIA/TIA-232 standard.
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NI 9870 Getting Started Guide