Build 8
This update makes the User Configuration menu more consistent. In the Calibration and User Configuration menus if a parameter adjustment was not consistent with the current settings, then that page was skipped. For example, in the Calibration menu, if you disable the over-voltage alarm, then the page that adjusted the setting is skipped, similarly in the User Configuration, if you change the microphone input to the LINE mode, then the Speech Processor setting is skipped. This update now does the same thing for the Serial Port Mode. If the mode is set to DISABLED, then the menu page that sets the port speed is skipped.
Build 7 (Removed, replaced with Build 8)
This version improves the mode selection for the RS-232 port. In all previous versions the port was essentially active all the time in one mode or another, even if nothing was physically connected to the port. In certain, admittedly very rare, circumstances with a lead connected to the port and the transceiver connected to a computer then it was possible for stray characters to confuse the operating system. This version now has an additional 'DISABLED' mode selection so that even if stray characters are received they will be discarded and ignored.
This version can be safely loaded over a previous version 5, but as with all firmware updates it is a wise precaution to make a note of your existing calibration and configuration settings prior to installing this update.
After installing this version, remember to enter the User Configuration mode and reset the RS-232 port mode. As an additional mode value has been introduced, your previous setting will be incorrect.
If updating from an earlier version as the EEPROM mapping is different then on initial power up you will receive a 'Checksum Error!' message and the calibration and configuration defaults will be installed. This only occurs the very first time. Again, make a note of your setting prior to updating and reset them afterwards. If updating from an original version then as the measurement system is completely different you will have to re-calibrate your transceiver.
NOTE: WHEN USING THE CALIBRATION MENU, IT IS ESSENTIAL WHEN SETTING THE OUTPUT POWER CALIBRATION THAT YOU DO NOT EXCEED 5W. TO AVOID OVERSTRESSING THE PA TRANSISTORS THE -3DB ATTENUATOR IS SELECTED. WHEN YOU RETURN TO NORMAL OPERATION YOU WILL FIND THAT THE CW OUTPUT POWER WILL THEN BE 10W. For full details please see the 'Forward Power Calibration' section, page 11 of the User Manual.
73, Adrian, 5B4AIY