Epson MFJ-1278B manual Fulldup ON/OFF

MFJ-1278B MULTI-MODE OPERATIONAL COMMANDS

Parameters:

n1 - 15, specifying frame acknowledgment time-out in 1 second intervals.

After transmitting a packet requiring acknowledgment, the MFJ-1278B will wait for the specified frame acknowledgment timeout before incrementing the retry counter and sending the frame again. If the packet address includes relay requests, the time between retries will be adjusted to

Retry interval = n * (2*m + 1) where m is the number of intermediate relay stations.

When a retried packet is sent, a random wait time is added to any other wait times in use. This is to avoid lockups in which two TNCs repeatedly send packets which collide with each other. Frack will also reduce timeouts with multiple digipeaters.

FULLDUP ON/OFF Mode: Packet Default: OFF

Parameters:

ON Full duplex mode is enabled.

OFF Full duplex mode is disabled.

When full duplex mode is disabled, the MFJ-1278B makes use of the Data Carrier Detect signal from the modem to avoid collisions, and acknowledges multiple packets in a single transmission with a single acknowledgment. When full duplex mode is enabled, the MFJ- 1278B ignores the DCD signal and acknowledges packets individually. The latter mode is useful for full-duplex radio operation, such as through OSCAR 10. It should not be used unless both your station and the station you are communicating with are full-duplex stations.

You may find full-duplex mode useful for some testing operations, such as the analog- or digital-loopback tests.

FULLDUP should be ON during digital loopback tests.