Chapter 3
Signal Connections
DAQArb 5411 User Manual
3-8
©
National Instruments Corporation
Power-Up and Reset Conditions
When you power-up your computer, the DAQArb 5411 is in the
following state:
•
Output is disabled and set to 0 V
•
Sample clock is set to 40 MHz
•
Trigger mode is set to continuous
•
Trigger source is set to automatic (the software provides the
triggers)
•
Digital filter is enabled
•
Output attenuation remains unchanged from previous setting
•
Analog filter remains unchanged from previous setting
•
Output impedance remains unchanged from previous setting
•
Digital pattern generation is disabled
When you reset the board using NI-DAQ or any application software
calling NI-DAQ, your DAQArb is in the following state:
•
Output is disabled and set to 0 V
•
Sample clock is set to 40 MHz
•
Trigger mode is set to continuous
•
Trigger source is set to automatic (the software provides the
triggers)
•
Digital filter is enabled
•
Output attenuation is set to 0 dB
•
Analog filter is enabled
•
Output impedance is set to 50
Ω
•
Digital pattern generation is disabled
•
PLL reference frequency is set to 20 MHz
•
PLL reference source is set to internal tuning
•
RTSI clock source is disabled
•
SYNC duty cycle is set to 50%
