User`s manual

V1.0 – Feb-09 User’s Manual Page 11 of 18
5 LED’s
There are 6 LED’s on the EVA1035-H that indicate different signals from the GPS
receiver (order of LED’s on EVA1035-H 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_OFF Hibernate
Toggle hibernate mode / position request during
PTF cycle (the LED visualizes the ON_OFF pulse)
LD5 1PPS Timing
1PPS signal at rising edge (1 pulse per second,
duration 500ms typ.)
Note: The original pulse width provided by the GPS
receiver is 1µs typically.
(see also AppNote 1PPS Pulse Width)
LD3 RFPWUP
RF/analog
status
Status of analog section (LED on = ON, LED off =
OFF) / controls power supply to the analog section
of the A1035-H GPS receiver.
LD6 Power / VCC POWER Power on LED
Table 1: LED’s function and description
Figure 7: EVA1035-H LED’s