WiSnap User Manual 2.21 04112011-JF
Page
7
of
66
2.4.2
WiSnap AAA Dongle
LEDs found on the WiSnap AAA are slightly different than on the M1.
The blue LED blinks when data is sent or received on the serial interface. This does not indicate that
the data was sent over the Wi-Fi connection. If the blue LED is not flashing and your device is
sending data to the serial port, you likely have a connection, incorrect baud rate, or HW flow control
(RTS/CTS) problem.
The blue LED also indicates battery status and will blink slowly when the batteries are low except
when charging. When charging the blue LED remains off. If the device is on while the batteries are
charging the blue LED will come solid when the batteries are fully charged.
There is an additional red LED near the power connector that indicates external power is present at
either the power plug of DB9 connector.
2.5
WiSnap M1 External Antenna
An external antenna with UF.L connection can be mounted onto the WiSnap M1 module. This is most
useful if the device will be embedded inside of another metal casing.
The FCC certified antenna has the following specifications:
•
Center Freq.
2.45 GHz
•
Bandwidth
120MHz
•
Wavelength
½
-wave
•
VSWR
<1.9 typ. At center
•
Impedance
50 ohms
•
Gain
2.20dBi
Other antennas can be used, such as a higher gain antenna, but would not be FCC certified.
2.6
Additional WiSnap AAA Dongle Notes
2.6.1 Power Switch and Sleep
The red button on the top of the WiSnap AAA Dongle is a soft ON/OFF switch.
To turn ON the WiSnap AAA Dongle, press down the red button for 1 second, and then release it. You
will see the green, yellow, red and blue LEDs flash in succession. After a moment the blue and
yellow LEDs will go OFF, leaving the red and green LED flashing.
To turn OFF the WiSnap AAA Dongle, press down on the red button for 1 second, then release it.
The green, yellow, red and blue LEDs flash in succession several times. Then all the LEDs will turn
off and the device will be in sleep mode.
State
Green LED Yellow LED
Red LED
Blue LED
ON solid
Connected
over TCP
Full charge
Fast blink
No IP address
or Config
Mode
Not Associated
Rx/Tx data
transfer
Slow blink
IP address
OK
Associated, No
Internet
Low Power
OFF
Associated,
Internet OK
