2.2.4.  Using the APS-3 
 
For problem free operation, the user should read this APS-3 User Manual 
thoroughly before first use of the APS-3. 
 
2.2.5.  APS-3 Front Panel 
 
Bluetooth® 
 
RTK 
 
Power  
 
Internal Data Logging 
 
GNSS Satellite 
 
Power Button 
Figure 4: APS-3 Front Panel Label 
 
2.2.6.  Front Panel Description 
 
Table 3:  LED Operation 
 
ON:   Established device Communication   
OFF:   Idle for device bonding 
 
 
ON (Solid):    Transmitting RTK corrections 
ON (Flashing):  Receiving RTK corrections 
OFF:    No RTK corrections 
 
 
ON:    Receiver is Powered ON 
OFF:   Receiver is Powered OFF 
 
 
Fast & Continuous (10 times per sec.)      0 Satellites 
Blinks 1 time, then pauses                      1,2 Satellites 
Blinks 2 times, then pauses                    3,4 Satellites 
Blinks 3 times, then pauses                    5,6 Satellites 
Blinks 4 times, then pauses                    7,8 Satellites 
Blinks 5 times, then pauses                     9+ Satellites 
 
Internal SD card Data Logging On