Novatel OEM7 - Applying Power to the Receiver Card; Connecting Data Communications Equipment; Serial Ports

Chapter 2 Installation of OEM7 Family Receiver Cards
OEM7 Installation and Operation User Manual v1 33
If a short circuit or other problem causes an overload of the current supplied to the
antenna, the receiver hardware shuts down the power supplied to the antenna. To
restore power, power cycle the receiver. The Receiver Status word, available in the
RXSTATUS log (see OEM7 Commands and Logs Reference Manual (OM-20000169)),
provides more information about the cause of the problem.
2.11 Applying Power to the Receiver Card
Set the power supply to the voltage indicated in Power Supply Requirements for Receiver Cards
on page20, then connect the power supply to the wiring harness.
2.12 Connecting Data Communications Equipment
OEM7 receivers communicate with other devices in the system using:
l
Serial Ports below
l
USB Ports on page36
l
Ethernet Ports on page38
l
SPI Ports on page38
2.12.1 Serial Ports
The serial communication ports (COMports) are used to communicate between components in
the GNSS system and to external data communications equipment such as computers and data
loggers.
Model COM1 COM2 COM3 COM4 COM5
OEM719
LVCMOS
no flow control
LVCMOS
no flow
control
LVCMOS
no flow
control
N/A N/A
OEM729
User configurable as
- RS-232 with flow
control
- RS-422 without flow
control
LVCMOS
with flow
control
LVCMOS
no flow
control
N/A N/A
OEM7700
LVCMOS
with flow control
LVCMOS
with flow
control
LVCMOS
no flow
control
LVCMOS
no flow
control
LVCMOS
no flow
control
Table 4: OEM7 Card Default Serial Port Configurations
On the OEM729, COM1 can be user configured for RS-232 or RS-422 operation. Refer to
Serial Ports on page41 for instructions.
Each port may support some or all of the following signals: