Measurement Computing WebDAQ 504 User Manual page 12

LED status indicators
The WebDAQ has four LEDs on the rear panel that indicate the status of power and host communica ons. The
following table defines the LED states during normal opera on.
Label State
1: POWER Steady yellow
Steady green
Blinking
yellow
Off
2: STATUS Blinking
yellow
Steady green
Flashing
green
100 ms on/2s
off)
Blinking
heartbeat
Blinking
green
Off
3: ERROR Blinking
yellow
Off
4: MEDIA Blinking
yellow
Steady yellow
Blinking
green
Steady green
WebDAQ 504 User's Guide
LED states – normal opera ng mode
Descrip on
Device is boo ng up
Device boot is successful.
Device is shu ng down.
Device is off.
Device is configuring hardware.
Hardware configura on is complete.
Wai ng for a scheduled start condi on to be met.
Scheduled start condi on is met; wai ng for job start condi on to be met.
Data is being acquired (job start condi on is met).
No error detected.
Error condi on is detected. This LED blinks even when the so ware is
configured to ignore the error.
Error state is cleared when the next schedule starts.
No error detected.
A job is configured to log to external media, but the job hasn't started yet;
pushbu on will not let you eject media.
External media is inserted into the SD card slot or USB storage port.
Currently logging to an external SD card or USB storage device.
Media has been made safe for removal using the func on bu on, but has
not been removed.
page 12