APPENDIX B OEM729 Technical Specifications
OEM7 Installation and Operation User Manual v4
156
B.5 OEM729 Strobe Specifications
Strobes
Input/Output
Factory
Default
Comment
ERROR
Output
Active
high
Normally low.
A high output on this pin indicates that the receiver is in
an error state. For information about the cause of the
error, log the
RXSTATUS
log.
Event1
Input
Leading edge
triggered
Active
low
An input mark for which a pulse greater than 150 ns
triggers certain logs to be generated. (Refer to the
MARKPOS and MARKTIME logs and ONMARK trigger.)
Polarity is configurable using the
MARKCONTROL
command.
Event2
(Mark 2)
Input
Leading edge
triggered
Active
low
An input mark for which a pulse greater than 150 ns
triggers certain logs to be generated. (Refer to the
MARK2POS and MARK2TIME logs.) Polarity is
configurable using the
MARKCONTROL
command.
Note
: Event2 is the default behavior for pin 7 of
connector P1804. The secondary behavior for pin 7 is
COM3_Rx. If COM3 is enabled, the Event2 input is
disabled.
PPS
Output
Active
low
A time synchronization output. This is a pulse where the
leading edge is synchronized to receiver calculated GNSS
Time. The polarity, period and pulse width can be
configured using the
PPSCONTROL
command
PV
(Position
Valid)
Output
Active
high
Indicates a valid GNSS position solution is available.
nRESET_IN
Input
Active
low
Reset signal input from external system; active low, 50
ms duration. Hold the RESETIN pin low for >150 ms after
power is applied
VARF
(Variable
Frequency)
Output
Active
low
A programmable variable frequency output ranging from
0 Hz to 50 MHz (refer to the
FREQUENCYOUT
command)
Table 28: OEM729 Strobes Description
