Manual – 3000 NRL Family
Unidata Manual - 3000 NRL Family - 06 08 2019.docx
Page 10
1.10.3 USB Thumbdrive
Not currently available, but future updates to NRLs will add support for USB thumbdrives with the same
functionality intended for MMC/SD cards.
2.0
NRL LED INDICATORS
2.1
3016, 3008, 3004 “High End”
These loggers have six bi-colour (red/green) LEDs:
Label
Description
Power
Turns on when the NRL performs a scan, typically every few seconds. Green indicates good
power voltage. Red indicates the power is low.
Config
Turns on when activity is detected on the USB configuration port, which is used for configuration
and local programming/unloading. Red indicates the logger has detected something plugged in,
but not communicating. Green indicates successful communication.
Scheme Turns on every scan when the scheme program is being executed. The colour is under scheme
control. By default red indicates the scheme has stopped and is not logging, while green
indicates the scheme is running and logging as programmed.
Neon
Turns on when the logger is communicating with the Neon server. Red indicates the logger is
attempting to establish a connection, which takes around 10 to 20 seconds. When the
connection is successful the LED turns green. When the communication completes
(successfully or otherwise) it turns off.
Status
Indicates MMC/SD card activity. Green indicates a card has been detected. Red indicates the
card is busy and should not be removed.
USB
This LED is located either on the top and labelled “USB”, or is located next to the “USB Drive”
on the side.
Green indicates a USB storage device has been detected. Red indicates the device is busy and
should not be removed.
2.2
3004M “Mid-Range” and 3001M “Low End”
These loggers have three bi-colour (red/green) LEDs:
Label
Description
PWR
Same as the Power LED described above.
SCHM
Same as the Scheme LED described above.
COMS
A combination of the Config, Neon, and Status LEDs described above. If any of those LEDs
would be green, this LED will be green. Otherwise, if any of those LEDs would be red, this LED
will be red. If all of those LEDs are off, this LED will be off.
