Chapter 2 SPAN Installation
OEM7 SPAN Installation and Operation User Manual v14
46
For most OEM7 receiver cards the connection must include a RS-422 line driver.
If using COM1 on an OEM729, a RS-422 line driver is not required. However, the COM1 protocol must be set
to RS-422 using the
SERIALPROTOCOL
command.
Use COM1 or COM2 on the PwrPak7 to connect to the OEM-IMU-STIM300. These ports can be set to RS-
422 protocol using the
SERIALPROTOCOL
command.
Refer to the following table for the connections required between the IMU and receiver. For information about
the receiver connector, see the
OEM7 Installation and Operation User Manual
l
a 5.0 VDC (±0.5 VDC) regulated power supply
Refer to the following table for the location of the power supply connections.
Figure 5: OEM-IMU-STIM300 Pin Out
STIM300
RS-422 Line Driver
Receiver
Pin
Pin Name
Output
Input
Pin Name
Description
1
STIM TXD-
RS422 B-
–
–
Part of RS-422 transmit pair from STIM300
2
STIM RxD-
RS422 A-
–
–
Part of RS-422 receive pair from STIM300
3
NC
–
–
–
Do not connect
4
STIM TOV
–
–
EVENT_IN2
OEM719: 7
OEM729: 7
OEM7600: 29
OEM7700: 29
OEM7720: 29
Interface Circuit Required
The STIM TOV output uses 5V
logic, but the OEM7 EVENT_
IN lines are not 5V tolerant. A
circuit to convert from 5V logic
to 3.3V levels is required.
5
NC
–
–
–
Do not connect
6
NC
–
–
–
Do not connect
7
NC
–
–
–
Do not connect
8
5V Pwr
–
–
–
5 VDC power supply
Table 6: OEM7 Receiver Card to STIM300 Pin Connections
