National Instruments 655 Series, Руководство по началу работы, Страница: 24 / 28

NI Digital Waveform Generator/Analyzer Guide 24 ni.com
Tables 4 and 5 describe the different conditions indicated by the two
NI PXI LEDs.
Table 3. NI 654 X /655 X SMB Connectors
Connector
Signal
Name
Signal
Type Description
CLK IN Reference/
Clock Input Control Terminal for the external Reference
clock used for the PLL or for the
external Sample clock used for
pattern generation and/or
acquisition.
PFI 0 Programmable
Function
Interface
(PFI) 0 Control Input terminal to the device for
external triggers, or output terminal
from the device for events.
CLK OUT Reference/
Clock Output Control Terminal for the exported PLL
Reference clock or the exported
Sample clock.
Table 4. ACTIVE LED Indicators
Color Indications
Off Device not armed, not triggered, or experiencing an error.
Amber Device armed and awaiting Start trigger. If performing a
dynamic acquisition operation, the device may be acquiring
pretrigger samples.
Green Device received Start trigger.
Red Error condition.
Table 5. ACCESS LED Indicators
Color Indications
Off Device not ready.
Amber Device being accessed by software.
Green Device ready to be programmed.
Red Running the niHSDIO Self Test VI or calling
niHSDIO_self_test
produced a failure.