Serial/Host/Aux 1; Figure 25: Lmu-26Xx Db9 Serial Connection; Figure 26: Lmu-26Xx Db9 Serial Connection - Cal Amp LMU-26xx Install Manual

5.6.1 SERIAL/HOST/AUX 1

The Serial AUX1 port provides a standard serial NMEA stream to an in-vehicle computing device, such as
a laptop. This port is identified by the blue and green wires pinned to one of the Molex connectors. In
order for the LMU-26xx to provide NMEA, you must install the CalAmp DB9 Cable (P/N 133337-5). This
cable comes with the correct Molex connector mate.
To Install the DB9 Cable via AUX1 Serial Port:
1. Connect the DB9 Cable to the LMU-26xx AUX1 serial port, and then connect the DB9 serial
connector to an available serial port on the laptop (Figure 25).

Choose the appropriate COM port on the laptop device. If there is no available serial port, use a
serial to USB adapter (Figure 26). These are readily available for purchase either online or in retail
electronic product stores.
2. Secure the DB9 connection by wrapping it with electrical tape. If the LMU-26xx is powered up,
NMEA will begin working without further configuration.
MBUD-0199v3.3

Figure 25: LMU-26xx DB9 Serial Connection

Figure 26: LMU-26xx DB9 Serial Connection

CalAmp | LMU-26xx Install Guide
Serial Connection to
Laptop
USB connection to
Laptop
Page 25