Epson MFJ-1278B Manuel D’Utilisation

The  Automatic Signal Analysis or  ASA, feature installed in the MFJ-1278B firmware can 
analyze received signals such as RTTY, ASCII, AMTOR mode b and HF Packet.  ASA will 
tell you the speed, data bits, and if the signal is inverted.  ASA automatically switches the 
MFJ-1278B to the correct mode once you accept the results of the signal analysis by typing 
OK and <ENTER>.  As you see ASA is extremely helpful when tuning across the amateur or 
the shortwave bands.  Let ASA help you determine what kind of signals you are listening to. 

ASA is effective in analyzing RTTY, ASCII, AMTOR FEC mode b and HF Packet. Once 
invoked, ASA only takes a few seconds to analyze the tuned-in signal.  Once the result is 
displayed, the user can decide whether to accept by issuing the  OK command.  If the user 
questions the results, ASA will continue to analyze the signal and will display the results after 
each cycle. 
 
When the ASA routine is entered, the MFJ-1278B will enter the "converse" mode 
automatically and display: 

All the you have to do now is to tune in the signal you wish to decode.  This is done in 
accordance with the MFJ-1278B operations manual. 
 
Once invoked, ASA will first display the speed and the confidence factor followed by a 
pause.  After a 5 to 10 second pause it will display the speed of modem used to analyze the 
signal, data bits of the signal which will be either 5, 6, 7 or 8.  Any data bit analysis of 6 
should not be used and the signal should be re-analyzed.  Last it will display the setting of 
what it will change the RXInvert command to (On or Off).  This is what ASA will switch the 
MFJ-1278B to, if the user accepts its result. 
 
The display is in the following format: 

A typical result will look like this: 

Once the result is displayed, the user can exit ASA signal mode by pressing any key.  MFJ-
1278B will return cmd: command prompt without changing the operation mode. 
 
If the analyzed result is acceptable, the user will simply type: 

OK  <ENTER>