46 Description TM9100 Service Manual
© Tait Electronics Limited August 2005
When the radio is turned on, the following processes are carried out on the
control-head board:
1. The FPGA image, which includes the RISC processor, is loaded from
the serial flash to the FPGA.
2. The RISC processor executes the boot code, which carries out an
initialization, and—in case of a fault—generates an error code for
display on the control head.
3. Normal radio operation starts with the RISC processor executing
■ the graphical user interface
■ the I/O processing
■ the user interface processing
During normal radio operation the radio body and control head
communicate via interface software, which is part of the radio and control-
head application software.
Software Shutdown On shutdown, the programming and calibration data is stored in the
database, and power is removed from the radio.
Important On power loss, any changes made to the programming or
calibration data may be lost.
Programming and
Calibration Files
One of the servicing tasks is the downloading and uploading of
programming and calibration files to the database. For more information,
refer to “Servicing Procedures” on page 139 and the online help of the
programming and calibration applications.
Software Upgrades During servicing it may become necessary to upload software to a
replacement main board, control head, or control head board using the
Tools > Options > Download command of the programming application.
For more information, refer to the online help of the programming
application and to the technical notes accompanying the software files.
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