National Instruments USB-6008 Guía De Seguridad Y Uso página 3

Take your first measurement in Measurement & Automation Explorer (MAX). Right-click the device and select Test Panels.
After selecting measurement parameters, click Start to verify measurement functionality.
LED Status
LED State
Not lit
On, not blinking
Single-blink
Pinout and Signal Descriptions
© National Instruments
Device not connected or in suspend
Device connected but not initialized, or the computer is in standby mode
Operating normally
Device Status
3 NI USB-6008/6009 Safety and Usage Guide