User`s manual

PRELIMINARY
V0.5 – Feb-11 User’s Manual Page 15 of 22
5.3 LEDs
There are 6 LEDs on the EVA2100-A that indicate different signals from the GPS
receiver (order of LED’s on EVA2100-A from left to right):
LED Name Function Description
LD2 RX Receive Serial data traffic (into GPS receiver)
LD1 TX Transmit Serial data traffic (from GPS receiver)
LD4 ON ON
ON after Reset, position request during PTF cycle and in
SiRFaware mode (the LED visualizes the ON pulse)
LD3 WAKEUP
Operational
state
HIGH: Full operation
LOW: Module in a low power mode
LD5 POWER Power/Vcc Power on LED
Table 1: LEDs function and description
Figure 13: EVA2100-A LEDs