NI 9403 Operating Instructions and Specifications 10 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.
Specifications
The following specifications are typical for the range –40 to 70 °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