Power/Communication Connector J4 - Jackson Labs RSR GNSS Transcoder User Manual

3.6.1 Power/Communication Connector J4

Table 3.2 shows the signals on connector J4. This connector is a 12-pin male connector from Hirose,
PN: DF11C-12DP-2V-57. Connector J4 is optional and does not need to be used if the board is
powered and controlled via the built-in USB connector.
Table 3.2 Connector J4 pinout
Ref
J4-1
J4-2
J4-3
J4-4
J4-5
J4-6
J4-7
J4-8
© 2017 Jackson Labs Technologies, Inc.
Name Function
GNSS-RXD NMEA Serial Output to
external GNSS
receiver
DC In 7V to 36V Prime Power DC Input
GNSS-TXD Serial Control Input
from external GNSS
receiver
GND System Ground
GNSS_PWR_OF External GNSS Power
F Control Output
LOCK_OK Internal Oscillator
LOCK Status
GNSS-1PPS 1PPS Reference Input
from external
reference or GNSS
1PPS OUT 1PPS Output driven by
internal Oscillator
RSR GNSS Transcoder™ User Manual
Specification
RS-232 level serial control
port output to external GNSS
receiver
7V to 36V DC Prime Power
input, <50mV AC, <0.25A
RS-232 level serial port input
from external NMEA source
Ground
CMOS-level Power Control
output to external GNSS
receiver 0V (GNSS ON) or
3.3V (GNSS OFF). Can drive
8mA. Compatible to Rockwell
RSR Puck Power Control
input pin.
3.3V Indicates internal
oscillator is locked to external
1PPS reference, and no
events are pending. 0V
indicates either oscillator is
unlocked, or events are
pending.
1PPS CMOS or TTL
reference input to RSR
GNSS Transcoder™. 0V to
5V swing allowed, 1.6V
threshold. Internally pulled to
Ground via 5.2K resistor.
3.3V CMOS 1PPS output
from RSR GNSS
Transcoder™ generated by
internal Oscillator.
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