Kantronics KAM 98, Руководство пользователя

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This command controls the polarity of the FSK output on the Radio port of the
KAM’98. When OFF, MARK is open-collector and SPACE is ground. When
ON, the polarity of MARK and SPACE is reversed.
FREEQUAL n (n = 0 - 31)
default 20
FREEQUAL sets the maximum number of bits in error allowed when scanning
for free signals. This is used to detect commercial short stations free signal trans-
missions in SITOR.
When more than n errors are detected, nothing is output. When less than or equal
to n errors are detected, “FREESIG ...” prints.
+ For more detail, see HF E-Mail in the non-packet “modes of operation” section.
FULLDUP {ON | OFF | LOOPBACK}
default OFF
When OFF (i.e., half duplex), the data carrier detect signal is used as a packet
collision avoidance signal. When ON, the modem is run full duplex, and carrier
detect does not inhibit transmission. The full duplex mode may be useful espe-
cially for satellite operations using duplex radio setups. Full duplex should not be
used unless both you and the station you are communicating with have full du-
plex capability. LOOPBACK is the same as full duplex (i.e., FULLDUP ON) as
far as protocol is concerned, but the receive circuit is still active; this allows you
to connect a simple wire between the transmit and receive pins on the radio con-
nector to verify operation of the modem circuitry. This same function can also be
realized with printed circuit board jumper J5
GMON
immediate
KAM’98 Commands Command Reference
KAM’98 v 8.3 259 User’s Guide