RSR GNSS Transcoder™ User Manual
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© 2017 Jackson Labs Technologies, Inc.
The following table shows the female DB-15 connector pinout of the RSR GNSS Transcoder™
Enclosure. Please see
for additional details on the signal functions and voltage levels for
the below referenced DB-15 pins:
Table 3.4 Enclosure DB-15 Connector Pinout
Please note that a standard USB cable can be used to wire up to DB-15 pins 1 to 4 to connect the unit
to a PC for communications and power from an attached PC or other USB power source. A
heavy-duty USB cable should be used to minimize voltage drop across the power and ground wires.
The RSR GNSS Transcoder™ will need at least 4.5V across pins 1 and 4 of the DB-15 connector to
operate properly during power-on, and a momentary current in excess of 1 Amp may flow during the
power-on surge through the USB power cable so the cable must be able to momentarily provide 1A
at 4.5V or higher. Lower quality USB cables will cause excessive voltage drop and subsequent
operational failures in the module. Alternatively - or concurrently - a 7V to 36V (12V Nominal) DC
Prime Power supply may be connected across pins 15 (+) and 14 (-) of the DB-15 connector to
supply power to the unit independently of the USB cable.
Ref
Name
Function
J4/USB equivalent pin
Pin1
USB Ground
USB Signal Ground
USB Pin 5
Pin 2
USB D+
USB D+
USB Pin 3
Pin 3
USB D-
USB D-
USB Pin 2
Pin 4
USB 5V
5V Input from USB
USB Pin 1
Pin 5
Ground
5V-USB Ground
J4 Pin-4
Pin 6
ISP#/ZEROIZE
ISP#/ZEROIZE
J4 Pin-9
Pin 7
EXT 1PPS IN
1PPS Input from GPS
J4 Pin-7
Pin 8
GPS PWR OFF
Disable Ext. GPS
J4 Pin-5
Pin 9
Ext. GPS TXD
RX input
J4 Pin-3
Pin 10
Ext. GPS RXD
TX output
J4 Pin-1
Pin 11
5.5V IN/OUT
5.5V to RSR
J4 Pin-11
Pin 12
Ground
Ext GPS Ground
J4 Pin-10
Pin 13
1PPS OUTPUT
1PPS CMOS OUT
J4 Pin-8
Pin 14
Ground
Prime Power Ground
J4 Pin-4
Pin 15
Prime Power
7V to 36V input
J4 Pin-2
Summary of Contents for RSR GNSS Transcoder
Page 1: ...RSR GNSS Transcoder User Manual Document 80200553 Version 1 1 Date 13 September 2017...
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