Frequency generator (slots 5 and 6 only), Module i/o states, Power requirements – National Instruments Eight-slot USB Chassis NI cDAQ-9172 User Manual
Page 80: Ai modules), Module i/o states power requirements

NI cDAQ-9172 User Guide and Specifications
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Frequency Generator (Slots 5 and 6 Only)
Number of channels................................1
Base clocks .............................................10 MHz, 100 kHz
Divisors...................................................1 to 16 (integers)
Base clock accuracy................................50 ppm
Output is available on any PFI terminal.
External Digital Triggers (Slots 5 and 6 or with Some AI Modules)
Source .....................................................Any PFI terminal
Polarity....................................................Software-selectable for most
signals
Analog input function .............................Start Trigger, Reference Trigger,
Pause Trigger, Sample Clock,
Sample Clock Timebase
Analog output function ...........................Start Trigger, Pause Trigger,
Sample Clock, Sample Clock
Timebase
Counter/timer functions ..........................Gate, Source, HW_Arm, Aux,
A, B, Z, Up_Down
Module I/O States
At power-on ............................................Module-dependent. Refer to the
documentation included with the
C Series I/O module(s).
With USB cable removed .......................Reverts to power-on state
Power Requirements
You must use a National Electric Code (NEC) Class 2 power source with
the NI cDAQ-9172 chassis.
Note
Some I/O modules have additional power requirements. For more information about
C Series I/O module(s) power requirements, refer to documentation included with the
C Series I/O module(s).
Note
Sleep mode for C Series I/O modules is not supported in the NI cDAQ-9172.