NTWB2
INSTALLATION & USER MANUAL
Page | 7
Rev 1.0
4
POWER UP
After connecting power to the NTWB2 the indicator LEDs light up in a specific pattern. Firstly the red
WiFi Status LED turns on for approximately 2 seconds and then the other LEDs turn on and off in the
order of In 1 Data LED, In 2 Data LED and WiFi Data LED. The sequence then reverses after which the
red WiFi Status LED flashes. This indicates a successful power up.
If a WiFi device which has previously connected to the NTWB2 is present then the device may
automatically connect, in which case the red WiFi Status LED will turn off after the NTWB2 has
powered up.
Refer to the Troubleshooting section if any of the LEDs remain on during the power up sequence.
5
LED INDICATORS
5.1
Normal Operation
In normal operation, the LEDs behave as per
Table 2
below. The NMEA In and WiFi Data LEDs flash
whenever they are receiving valid NMEA data. The rate they flash depends on how much and how
often data is received.
Table 2 - LED Indicators
LED Name Colour
Off
Flashing (may appear continuously on)
WiFi
Status
Red
AP Mode: At least one WiFi device is
connected to the NTWB2
Join Mode: The NTWB2 has joined the
configured WiFi network.
AP Mode: No WiFi devices have
connected.
Join Mode: Not connected to a WiFi
network
In 1 Data
Orange
No NMEA data is being received.
Valid NMEA data is being received.
In 2 Data
Orange
No NMEA data is being received.
Valid NMEA data is being received.
WiFi Data
Green
No WiFi data is being sent or received.
WiFi data is being sent or received.
5.2
No Data Received
If no data is being received on any of the NMEA inputs the NMEA In 1, NMEA In 2 and WiFi Data LEDs
will periodically flash in sequence to indicate the fact that the NTWB2 is powered up but no data is
being received.
As soon as data is received on either of the NMEA inputs the LEDs will revert back to normal
operation.
5.3
Turning the LEDs Off
Once proper operation has been confirmed the LEDs can be turned off to avoid being a nuisance,
particularly at night. To turn the LEDs off, move Switch 4 to the OFF position.
When the LEDs have been turned off they will illuminate during NTWB2 power up but will
immediately turn off again once power up has been successfully completed.
The LEDs can be turned on again by moving Switch 4 to the ON position. There is no need to cycle
the power when using Switch 4 to turn the LEDs on or off.
