
NI 9403E Operating Instructions and Specifications 8 ni.com
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Typically, when a system is in sleep mode, you cannot 
communicate with the modules. In sleep mode, the system 
consumes minimal power and may dissipate less heat than it does 
in normal mode. Refer to the Specifications section for more 
information about power consumption and thermal dissipation.
SpecificationsThe following specifications are typical for the range –40 to 85 °C 
unless otherwise noted. All voltages are relative to COM unless 
otherwise noted.
Input/Output Characteristics
Number of channels.......................... 32 DIO channels
Input/output type...............................TTL,  single-ended
Default power-on line direction........Input