Epson MFJ-1278B manual 8BITCONV ON/OFF, Mode Packet Default OFF, 8LEVELS ON/OFF

MFJ-1278B MULTI-MODE OPERATIONAL COMMANDS

COMMAND EXPLANATION

8BITCONV ON/OFF Mode: Packet Default: OFF

Parameters:

ON The high-order bit is not stripped in Converse Mode.

OFF The high-order bit is stripped in Converse Mode.

This command enables transmission of 8-bit data in Converse Mode. If 8BITCONV is OFF, the high-order bit (bit 7) of characters received from the terminal is removed before the characters are transmitted in a packet. The standard ASCII character set requires only 7 bits, and the final bit is used as a parity bit or ignored. Setting bit 7 in text characters transmitted over the air may cause confusion at the other end.

If you need to transmit 8-bit data, but do not want all the features of Transparent Mode, you should set 8BITCONV ON and AWLEN 8. This may be desirable, for example, if you are using a special non-ASCII character set.

Bit 7 is always removed in Command Mode, since commands require only the standard 7-bit ASCII character set.

8LEVELS ON/OFF Mode: FAX/SSTV Default: OFF

Parameters:

ON The MFJ-1278B will transmit and receive FAX and SSTV in 8 gray levels

OFF The MFJ-1278B will transmit and receive FAX and SSTV in 4 gray levels

In the FAX and SSTV modes, if 8LEVELS is ON, the MFJ-1278B will receive and transmit FAX and SSTV data in 8 levels of gray. The 8LEVELS command is effective only when MULTIFAX and TVX are turned ON. With the MULTIFAX and TVX set to OFF, the MFJ-1278B transmits and receives 2 level FAX and 4 level SSTV regardless of the setting of the 8LEVELS command. The built-in printer port on the MFJ-1278B does not support printing of 8 level data, whether it is FAX or SSTV. A Special terminal program, such as MFJ MultiCom™ must be used to decode and display Multi-level FAX and SSTV.

With 8LEVELS set to OFF, and MULTIFAX and TVX commands set to ON, the MFJ-