WiSnap User Manual 4.41 05282015-ML
Page 6
NOTE:
The following only applies to the WiSnap M1 module.
Connect a common ground when using the external TX, RX inputs. For a 3 wire DB-9 interface, connect TX, RX, and GND only.
Factory default is hardware flow control disabled; CTS and RTS are not required.
PIO’s are not 5.0 VDC tolerant. If using a 5.0 VDC circuit, input, PIO and UART input pins require a resistor divider. A
suggestion is to use a 10K resistor in series with 20k resistor to ground.
2.4 Status Indicators
2.4.1 WiSnap M1 SuRFBoard
PIO 4, 5 and 6 are active high and can be connected to external LEDs to provide network, connection and data status.
State
Red LED (PIO6)
Amber LED (PIO5)
Green LED (PIO4)
ON solid
Connected over TCP
Fast blink
Not Associated
Rx/Tx data transfer
No IP address or Config Mode
Slow blink
IP address OK
OFF
Associated
2.4.2 WiSnap AAA Dongle
LEDs found on the WiSnap AAA are slightly different than on the M1.
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
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 when 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
