OEM638 Technical Specifications
Appendix E
OEM6 Family Installation and Operation User Manual Rev 12
169
Table 37: OEM638 Strobes
Strobes
Default
Behavior
Input/
Output
Factory
Default
Comment
a
Event_In1
(Mark 1)
Dedicated
pin
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. The mark
inputs have pull-up resistors to 3.3 V
nRESET_OUT/
Event_In2
(Mark 2)
Multiplexed
pin
Input
Leading
edge
triggered
Active
low
By default, this pin is the nRESET_OUT output. Software
configurable to EVENT_IN2. 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. The mark inputs have pull-up resistors to 3.3 V
Event_In3
(Mark 3)
Dedicated
pin
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 MARK3POS and
MARK3TIME logs.) Polarity is configurable using the
MARKCONTROL
command. The mark inputs have pull-up
resistors to 3.3 V
Event_In4
Multiplexed
pin
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 MARK4POS and
MARK4TIME logs.) Polarity is configurable using the
MARKCONTROL
command. The mark inputs have pull-up
resistors to 3.3 V
PV (Position
Valid)
Dedicated
pin
Output
Active
high
Indicates a valid GNSS position solution is available.
VARF (Variable
Frequency)
Dedicated
pin
Output
Active
low
A programmable variable frequency output ranging from
0.1 Hz–50 MHz (refer to the
FREQUENCYOUT
command)
Also called EVENT_OUT1 (refer to the
EVENTOUTCONTROL
command)
RESETIN
Dedicated
pin
Input
Active
low
Reset LVTTL signal input from external system; active low,
>50 µs duration
PPS
Dedicated
pin
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
PPSCONTROL
command
PV/Event_Out3
Multiplexed
pin
Output
Active
high
By default this output indicates the PV state (same as "PV"
above). Software configurable to output EVENT_OUT3
EVENT_OUT2,
4, 5, 6, 7
Dedicated
pin
Output
A programmable variable frequency output ranging from
1Hz to 50MHz (refer to the
EVENTOUTCONTROL
command)
a. The commands and logs shown in capital letters (for example, MARKCONTROL) are discussed in further detail in the
OEM6 Family Firmware Reference Manual
(OM-20000129).