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MFJ-1278B MULTI-MODE BASIC OPERATION
Receiving SSTV Pictures
Note that if you are using one of the special terminal programs that supports color or multi-
gray levels SSTV operation, you should follow the instructions given in its operating
instruction manual to receive and transmit SSTV.
The SSTV operation procedure given in this instruction applies to the receiving of 4-level
SSTV pictures with a EPSON graphic printer attacted to the MFJ-1278B printer port.
From command mode, the MFJ-1278B can be set to SSTV mode by typing:
MODE TV <ENTER>
Select the desired SSTV formats by using the TVMODE command. To select the desired
TVMODE type the following from the cmd: prompt:
TVMODE n <ENTER>
where n is the TV format 1 through 5 as listed in SSTV Format Table 4-9. For example for
8.5 Second TV format, you will type: TVMODE 1.
The default SSTV mode for MFJ-1278B is TVMODE 1 (8.5 seconds format).
After tuning to the desired SSTV frequency, observe the TUNING INDICATOR of the
MFJ-1278B while fine tuning the radio. You will notice that with each scan the tuning
indicator will move toward the center. Tune the radio so that the 10th LED segment from left
is lit at the end of each SSTV line scan. Once you achieve this, the SSTV signal is tuned in.
The DCD LED should light. If DCD LED on the MFJ-1278B is not lit, rotate the
THRESHOLD control until it is lit.
SSTV Printing to the Printer
At this point you will want to ensure that your printer is properly set. Make sure that your
printer to set to "EPSON GRAPHICS" or "IBM GRAPHICS" mode. This is usually
selected by DIP switches on the printer. "IBM GRAPHICS" mode is not the same as
"EPSON GRAPHICS" mode. If you are using an EPSON graphics printer, you should turn
the IBM GRAPHICS mode off and set your printer to EPSON GRAPHICS mode.
Although most commands of the MFJ-1278B that affect SSTV printing are defaulted to allow
successful printing, you should check these commands before printing any SSTV picture.
You should insure that the commands EPSON and PRINTGRA are ON. The default values
of these commands are ON. SSTV printing to the printer will not function unless these
commands are turned on.
Note that
PRINTGRA
should be turned ON only if you are printing pictures through the