Epson Multi-mode Data Controller MFJ-1278B - Manual (Page 120)

MFJ-1278B MULTI-MODE BASIC OPERATION
The PIXTONES command defines the gray levels of the SSTV and FAX picture being
transmitted by the MFJ-1278B. To transmit an SSTV picture, you must use a terminal
program such as MFJ-1289 that supports the multi-gray levels SSTV and FAX transmitting.
PIXTONES values for SSTV mode is the same as in the FAX mode. Refer to FAX
Operation section in this instruction for pixtones information.
Note that sync tone of 1500 Hz is automatically transmitted when MFJ-1278B enters SSTV
transmitting. The Sync tone can not be changed.
The SSTV pictures received by the MFJ-1278B and stored on disk can be retransmitted
under the same SSTV format. How a file is recalled and transmitted will depend on the
terminal program used. Refer to the instruction manual of your terminal program.
To enter the SSTV transmit mode, first Type:
MODE TV <ENTER>
Select the desired SSTV format with the TVMode command. If you are using a terminal
program which supportsmulti-level SSTV transmitting, you should follow the transmitting
procedure given by the program manual.
Note that under multi-level SSTV, selection of TVMode for transmitting is not required.
After entering the SSTV mode, and selecting the desired TV Mode, enter the CONVERSE
mode by typing:
K.
Then, switch to transmit mode by typing:
CTRL-T
Terminal program will sends raw data stream to the MFJ-1278B thru the RS-232 port.
Transmit to receive switching is automatic and occurs when the data stream has been
exausted. Note that TVMODE setting is NOT required for multi-level transmitting. Follow
the normal "File Upload" procedure given by the terminal program.
CAUTION: If your terminal program is not fast enough to support a data transfer rate of 480
cps sustained then you will be unable to transmit multi-level SSTV or multi-level
FAX transmitting.
Creating SSTV Pictures for Transmitting
SSTV pictures captured by the MFJ-1278B and saved on disk can be re-transmitted.
However, it must be transmitted with the same format with which it was saved.