4.1 NL-82052RS serial
Serial signal level which is necessary for the operation of the NL-83052RS.
4.2 NL-82052USB USB 1.1
A standard USB 1.1 port is required to operate the NL-82052USB necessary.
4.3 NL-82052TTL TTL
TTL signal levels to operate the NL-82052TTL needed.
4.4 PPS Pin 6
From GPS_1PPS signal control PPS_OUT
Pull Low
WARNING: Please make sure the “I
sink” current is less than 100mA, more
than 100mA will be cause circuit
damage.