Wegmatt dAISy Owner's Manual - page 6
4 Using dAISy
Using dAISy is as simple as connecting it with an antenna and a PC and powering up your AIS capable
application of choice. When plugged in, dAISy automatically starts to listen for AIS transmissions.
4.1 Interpreting the status LED
dAISy has a single, two-color status LED, giving us some indication about how it’s feeling.
Short GREEN flash every 5 seconds
dAISy is well and alive and in receive mode.
While in receive mode, the mode dAISy starts in when powered up, it will very briefly blink green every 5
seconds to indicate that everything is ok.
Long GREEN flash
Yay! dAISy received a valid AIS packet.
For every packet received and passing all error checks, the LED will turn green for ¼ second. At the same
time dAISy will send the received message over USB to the connected PC.
Long RED flash
dAISy received an invalid packet.
dAISy caught the start of a package, but the received data did not pass other sanity checks like encoding
standard or checksum. It might be a ship just out of range, interference from another radio source, or
just random noise.
Don’t panic, you will see a lot of red even under optimal conditions.
Fast regular blinking RED
dAISy encountered an unexpected system error.
The most common cause is that it lost USB connection, which happens on some PCs (particularly Macs)
when they go into sleep mode. Unplug dAISy and plug it in again to fix this condition.
If the condition persists, there might a hardware issue with your device. Please contact us.
No LED activity
dAISy failed to boot or crashed. Unplug dAISy and plug it in again to fix this condition. If the condition
persists, there might a hardware issue with your device. Please contact me.
Or dAISy is not in receive mode because you are using the debug menu.
4.2 Configuration and debug menu
When connecting to dAISy with a serial terminal (e.g. Putty or Termite on Windows, screen on Linux and
OS X), pressing ESC will bring up a menu with a few configuration and debug options.