WebDAQ LEDs behave differently when so ware is updated on the device. The following table defines the LED
states during a so ware update.
LED states – so ware update mode
LED
State
Descrip on
All LEDs
Solid yellow
So ware update is star ng
POWER
Blinking
yellow
So ware update is running
STATUS
Blinking
green
Update file is located; device is being updated
Blinking
yellow
Update file cannot be located; insert media with update file
ERROR
Blinking
green
Update is successful; device will reboot in approximately 5 seconds
Blinking
yellow
Update failed; user must retry
Refer to
for more informa on about WebDAQ firmware.
SD card slot
The SD slot accepts SD (Secure Digital), SDHC, SDXC, MMC, and TransFlash memory cards. Memory cards can be
ejected using the web interface or the hardware FUNC bu on, unless the bu on is configured to start/stop an
acquisi on.
When removable media is plugged into the WebDAQ, the opera ng system opens it for wri ng. Use the FUNC
bu on or web interface to unmount the SD card before removing.
Acquiring data at high speeds can generate large file sizes
If you expect to acquire a large amount of data to a single file when logging to external media, do not
use media forma ed with the FAT32 file system. FAT32 is limited to a 4 GB maximum file size. If the log
file on FAT32 media grows beyond that size, a "File too large" error is returned and the acquisi on stops.
Before star ng a logging session of this type, reformat the media using a different file system such as
NTFS. Refer to the Frequently Asked Ques ons help topic for more informa on about file systems.
Factory reset bu on
The recessed bu on labeled CONFIG RESET restores factory default se ngs. When pressed, the default se ngs
are wri en to the device and the WebDAQ is rebooted. Refer to the
Restore factory default se ngs
sec on for
a list of the default se ngs that are restored.
Ethernet connector
The WebDAQ has one 10 Base-T/100 Base-TX, auto-nego a on, high-speed communica on port. The port
connector is an RJ-45, eight-posi on connector. The Ethernet port accepts shielded or unshielded twisted pair
cable. The maximum communica on distance without using a repeater is 100 m (328 ).
Ground connector
The WebDAQ ships with a ground screw in the connector labeled #6-32. To ground the WebDAQ chassis, a ach
a ring lug to a 14 AWG (1.6 mm) wire. Connect the ring lug to the grounding screw on the WebDAQ rear panel.
A ach the other end to a safety ground.
WebDAQ 504 User's Guide
page 13
