Chapter 2 SPAN Installation
OEM7 SPAN Installation and Operation User Manual v14
50
HG4930
Receiver
Pin
Pin
Name
Pin Name
Description
11
TTL_
TX
COMx_
RXD
Any COM port transmit and receive pair.
For most COM ports, a circuit to convert from 3.3V to 5V levels is
required. The exception is COM1 on the OEM729. For COM1 on the
OEM729, see
Direct Connect COM1 on the OEM729 to the OEM-IMU-
12
TTL_
RX
COMx_
TXD
13
NC
–
Do not connect
14
NC
–
Do not connect
Enter the following commands on the OEM7 receiver to configure the receiver to use the direct connection to the
HG4930 described in the previous table.
1.
CONNECTIMU COMx HG4930_AN01
2.
PPSCONTROL ENABLE POSITIVE
Direct Connect COM1 on the OEM729 to the OEM-IMU-HG4930
HG4930
Receiver
Pin
Pin Name
Pin Name
Description
1
GND
–
Connect to power supply Ground and any receiver ground pin. Follow
grounding best practices.
2
+5V
–
Connect to the 5 VDC power supply
3
TMI
PPS
OEM729: Pin 4
4
NC
–
Do not connect
5
NC
–
Do not connect
6
NC
–
Do not connect
7
NC
–
Do not connect
8
NC
–
Do not connect
9
SER_DATA_
OUT_H
COM1_
RXD+
OEM729: Pin 18
Serial Data High Output (RS-485)
10
SER_DATA_
OUT_L
COM1_
RXD-
OEM729: Pin 15
Serial Data Low Output (RS-485)
Table 10: COM1 on the OEM729 to HG4930 Pin Connections