Satel SATELLINE-M3-R3 Guia do Utilizador descarregar pdf (Página 11)

SATELLINE-M3-R3

User Guide, Version 1.2

10

Pull low / drive low to set UART1 (RD1,TD1) into

known state. See separate section of manual.

18

GPIO11

CMOS/BIDIR

GPIO – not used

19

PPS

CMOS/IN

Pulse per second input. A CMOS input for pulse

per second signal output from GPS receivers.

Intended to sync time and frequency of receiver

to other radios.

20

REF_FREQ_IN

CMOS/IN

Frequency input. A 1MHz…20 MHz input.

Generally from a GPS receiver clock. Used for

reference frequency synchronization.

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