Connect the CPT7 to Data Communication Equipment

The CPT7 can communicate with other devices in the system, such as computers and data loggers, using serial, USB or Ethernet ports.

The CPT7 also has a CAN bus port for communication with other CAN bus compatible devices. See CAN Bus Port.

All data communication connections can be made using the CPT7 I/O1 cable or CPT7 I/O2 cable. For information about these two cables, see CPT7 I/O1 Cable and CPT7 I/O2 Cable. These sections also have the connector pin out and connector recommendations for making a custom cable.

Serial Ports

The CPT7 has two serial ports: COM1 and COM2. COM1 uses RS-232 protocol and is available on the IO2 port. COM2 uses RS-422 protocol and is available on the IO1 port. Refer to CPT7 Connectors for the pin out of these connectors.

Port settings (bit rate and parity, for example) are software configurable. See Communications with the Receiver for information about configuring the serial ports. Also see CPT7 Data Communication Specifications for the serial port specifications.

To connect to a serial port using RS-232 protocol:

  1. Connect the CPT7 I/O2 cable, or a custom made cable, to the IO2 connector.

  2. Connect the DB9 female connector on the cable to the serial port on the computer or other data communication device.

To connect to a serial port using RS-422 protocol:

  1. Connect the CPT7 I/O1 cable, or a custom made cable, to the IO1 connector.

  2. Connect the DB9 female connector on the cable to the serial port on the computer or other data communication device.

USB Ports

The CPT7 has one USB 2.0 compatible port available on the IO2 connector. This USB port operates at 480 Mb/s.

To connect to the USB port:

  1. Connect the CPT7 I/O2 cable, or a custom made cable, to the IO2 connector.

  2. Connect the USB connector on the CPT7 I/O2 cable to a USB port on the computer or other data communication device.

The NovAtel USB drivers must be installed on your Windows or Linux computer before connecting your computer to the CPT7 using a USB port. For information about the NovAtel USB drivers, see USB Drivers.

Ethernet Port

The CPT7 has a 10Base-T/100Base-TX Ethernet on the IO2 connector that can be used for communications with external data communications equipment such as computers and data loggers. The Ethernet port supports IPv4 Internet layer, TCP/IP transport, ping and connection from a Telnet client. Users can conduct remote debugging, accept MRTCA (modified RTCA) data and download firmware. OEM7 receivers are also equipped with NTRIP Version 2.0 (Networked Transport of RTCM via Internet Protocol) client and server capability.

To connect to the Ethernet port:

  1. Connect the CPT7 I/O2 cable, or a custom made cable, to the IO2 connector.

  2. Connect an Ethernet cable from the RJ45 jack on the CPT7 I/O2 cable to an Ethernet port on the computer or other data communication device.

Refer to Ethernet Configuration for instructions on configuring Ethernet and NTRIP.

CAN Bus Port

The CPT7 has a CAN Bus port available on the IO2 connector.

To connect to the CAN Bus port:

  1. Connect the CPT7 I/O2 cable, or a custom made cable, to the IO2 connector.

  2. Connect the CAN signals, available on the DB15 connector, to the CAN Bus.

The CPT7 CAN bus port is unterminated. If the CPT7 is at the end of the bus, then the connecting cable must have 120 Ω of resistance integrated into the cable between CANH and CANL in close proximity to the I/O2 connector.

For information about configuring CAN, see CAN Bus.