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Technical Manual
MX800 Transceiver T19 Option
4. Firmware Upgrade
This chapter outlines the firmware upgrade procedure for the T19 / T26 option boards. The option boards
use flash memory based microcontrollers whose firmware can be upgraded using the serial port of the
MX800 series radios. This will allow the user to take advantage of new features in the latest software
releases.
The Universal Line Interface Board T19 Firmware upgrade file can be downloaded at
http://www.spectraeng.com.au/mx800-docs.shtml
4.1 Upgrade Procedure
The T19 / T26 option board has a bootloader program that is activated on power-up of the MX800 radio.
The bootloader selects between normal and monitor mode operation depending on the state of the push-
button switch on the front panel of the MX800 radio at reset (or power-up). If the push-button switch is
depressed at reset the bootloader will enter monitor mode.
Here is a list of items required to complete this procedure:
•
PC with a serial terminal program installed
•
MX800 with a T19/T26 option board installed
•
MXTOOLS serial communications cable
•
13.8V DC power supply
The HyperTerminal program that usually comes installed in the Windows operating system can be used
for the firmware upgrade process.
4.1.1 Upgrade Steps
Note
The MX800 normally communicates at a baud rate of 9600, however the T19/T26 bootloader
communicates at a baud rate of 57600. It is useful to have two instances of HyperTerminal running,
one with a baud rate of 9600 and the other with a baud rate of 57600. Create another HyperTerminal
connection with a baud rate of 57600 (Bits per second) using Setting up HyperTerminal as a guide.
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