
160
OEM6 Family Installation and Operation User Manual Rev 7
8
IMUCTS / IMURXD-
RS232 /
RS422
Input
-
-
IMUCTS: RS232 Flow Control
(±25 V tolerant)
IMURXD-: RS422 Signaling (2 V
differential typical)
10
GND
-
-
12
SYNCOUT
(EVENT_OUT7)
3.3V CMOS Output
Rising /
Falling
Edge
8
Synchronization Output.
Identical to EVENT_OUT signals
but dedicated for the use of an
attached IMU.
14
PV / EVENT_OUT3
3.3V CMOS Output
Rising /
Falling
Edge
8
Event Output. Outputs a user-
specified timing signal. Can be
synchronized with PPS.
Multiplexed with Position Valid
(PV)
16
EVENT_OUT4
3.3V CMOS Output
Rising /
Falling
Edge
8
Event Output. Outputs a user-
specified timing signal. Can be
synchronized with PPS.
18
EVENT_OUT5
3.3V CMOS Output
Rising /
Falling
Edge
8
Event Output. Outputs a user-
specified timing signal. Can be
synchronized with PPS.
20
EVENT_OUT6
3.3V CMOS Output
Rising /
Falling
Edge
8
Event Output. Outputs a user-
specified timing signal. Can be
synchronized with PPS
22
GND
-
-
24
Reserved
26
EVENT_IN3
3.3V CMOS Input
Rising /
Falling
Edge
-
Event Input (Mark Input). A
transition on this pin is logged
and time stamped. Weak pull up
internal to OEM638.
28
nRESETOUT /
EVENT_IN2
3.3V CMOS Output/
Input
Rising /
Falling
Edge
-
nRESETOUT output. Outputs an
active low pulse at system reset.
Multiplexed with EVENT_IN2
(Mark2). Refer to the
IOCONFIG
command. Weak
pull up internal to OEM638 when
configured at Event Input
30
GND
-
32
USERIO3
3.3V CMOS IO
-
2
General Purpose IO (no internal
pull if resistor used as input)
34
USERIO4
3.3V CMOS IO
-
2
General Purpose IO (no internal
pull if resistor used as input)
36
USERIO5
3.3V CMOS IO
-
2
General Purpose IO (no internal
pull if resistor used as input)
38
USERIO6
3.3V CMOS IO
-
2
General Purpose IO (no internal
pull if resistor used as input)
Pin
Signal Name
Signal Type
Signal
Direction Polarity
Drive
Strength
(mA)
Description