Digital Voice Systems VC-20-ATC-10B Especificaciones descargar pdf (Pagina 55)

FAA20 Embedded NEXCOM Vocoder

Board Manual

This manual has been prepared for the Federal Aviation Administration.

FA100-00107 (March 2004) – Rev 1.0.0 Page 49

7.3 Upgrading FAA20 Software

The FAA20 main application software can be upgraded via any one of the

three terminal ports. Two programming modes are supported: standard

mode (for COM1 or COM2) and acknowledgement mode (for COM3). The

FAA20 application software is provided as an ASCII Motorola S-record file.

The FAA20 includes software to read and interpret S-record command

lines.

7.3.1 Standard Mode Upgrade

The standard upgrade is performed using the plain text file transfer

capability available with most terminal emulation programs.

To upgrade the FAA20 software using COM1 or COM2, complete the

following steps.

1. Verify hardware handshaking is enabled on the terminal and on the

COM port. The COMCFG command can be used to display the

current setup. The last token should be the letter ‘H’ indicating that

hardware handshaking is enabled.

2. Record the current configuration parameter settings. The CFG

command can be used to print the current settings.

If the size of the configuration block in the new software matches

that of the old software, the configuration block is unaffected. If the

sizes are different, the new software will erase the configuration

block. An empty configuration block is reported in the banner

message during FAA20 power up. Typically, the configuration block

does not change with software releases.

3. Enter the PROG command (without any parameters).

The FAA20 erases the main application flash memory to prepare

memory to be reprogrammed. The FAA20 prints READY when this

process has been completed. The FAA20 also temporarily disables

COMECHO and COMPROMPT, if enabled.

4. Send the new S-record file using the terminal file transfer capability.

For example, when TeraTerm Pro is used, this is accomplished by

clicking File→Send File and then selecting the faa20.s file.

The FAA20 updates the terminal display with the number of records

processed. When all records have been transferred without error,

the FAA20 prints a DONE message.

If any error is detected during the programming process, the FAA20

aborts the flash programming and prints an error message. If this

occurs, the file transfer should be stopped and the ESC key should

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Digital Voice Systems VC-20-ATC-10B Especificaciones Pagina 55