NavSpark PX1172R Getting Started page 6

Interface of RTK EVB (2/3)
NAME
USB_1
USB_2
RTK_STAT_R
RTK_STAT_B
1PPS
VDD33
GND
USB port for NMEA out, RTK correction & binary command in, 115200
Not Used
Not Used
Status signal
Low : RTK Fix for Positioning
Blink : RTK Float for Positioning
High : otherwise
One‐pulse‐per‐second (1PPS) time mark output, 3.3V LV‐TTL. The rising
edge synchronized to UTC second when getting 3D position fix. The pulse d
uration is about 100msec at rate of 1 Hz.
3.3V power input
Ground
DESCRIPTION