APPENDIX B OEM729 Technical Specifications
OEM7 Installation and Operation User Manual v4
159
Pin
Signal
Name
Signal
Type
Signal
Direction
V
IL
Max
(V)
V
IH
Min
(V)
V
OL
Max
(V)
V
OH
Min
(V)
Drive
(mA)
Description
7
COM3_
RX/
EVENT2
1
3.3V
CMOS
Input
0.7
2.1
-
-
-
This pin is internally
multiplexed.
COM3_RX: COM3
receive data input.
EVENT2 input. Rising or
falling edge triggered.
This is used to provide
position or time data on
an external trigger.
Internal 10 kΩ pullup.
8
EVENT1
3.3V
CMOS
Input
0.7
2.1
-
-
-
EVENT1 input
Rising or falling edge
triggered. This input is
used to provide a
position or time data
log based on an
external trigger.
Internal 10 kΩ pullup.
9
ERROR
3.3V
CMOS
Output
-
-
0.4
2.9
4
ERROR output
Normally low. A high
output on this pin
indicates that the
receiver is in an error
state.
Internal 10 kΩ
pulldown.
10
PV
3.3V
CMOS
Output
-
-
0.4
2.9
4
Position Valid output
A high output on this pin
indicates that the
receiver has computed
a valid GNSS position.
Internal 10 kΩ
pulldown.
1
Through firmware, the COM3 UART may be configured on pins 7 and 19.
