Timewave DSP-232, Руководство по эксплуатации

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Chapter 12 PACTOR Operation
In AMTOR ARQ, this command inserts “+?” into the data stream being sent. With
EAS ON , the “+?” is echoed to
the terminal.
PACTor Immediate Command
Mode: PACTOR Host: Pt
PACTOR is an immediate command that switches the DSP into the PACTOR mode of operation.
PACTOR is a mode of data communication that combines some of the features of both AMTOR and packet. The
abbreviated command is PT. It has both a linked mode called ARQ and a non-linked mode called unproto.
PASs
n Default: $16 (
CTRL-V
)
Mode: packet, ASCII and PACTOR Host: PS
“n” 0 to $7F (0 to 127 decimal) specifies an ASCII character code that you can .
PASS
selects the ASCII character “n” used for the “pass” input editing commands. The
PASS
character signals
that the following character is to be included in a packet PACTOR or ASCII text string. For example, if you’re
typing in text and want to enter three
RETURN
s so you can put a line space between two paragraphs, you’d do this:
“...here’s the end of the first paragraph.” ( CTRL-V ) + ( RETURN ) + ( CTRL-V ) ( RETURN ) + ( CTRL-
V
)
+
(
RETURN
) .“Now this line will appear after a line space.”
The line will appear at the other station like this:
“...here’s the end of the first paragraph.”
“Now this line will appear after a line space.”
If you had just pressed
( RETURN ) at the end of the word, “paragraph,” you would’ve forced a packet to be sent.
Press (
RETURN
) again, and you would’ve forced an empty packet to be sent. Press (
RETURN
) yet again, and
another empty packet would’ve been sent. This happens because when you press RETURN , it normally forces a
packet to be sent. However, by inserting a (
CTRL-V
) before entering a (
RETURN
), you disable the function of
( RETURN ) in the Command mode and allow it to be used in your outgoing text to act as a “real” ( RETURN ). So,
the
PASS
character “hides” the next character’s function.
PT200 ON | OFF Default: ON
Mode: PACTOR Host: PB
ON
Automatically increases the data transmission to 200 baud if HF conditions allow it..
OFF
You disable the automatic shift function to 200 baud is disabled.
The normal operating speed for PACTOR is 100 baud. If conditions are good, its speed automatically increases to
200 baud. If—because of deteriorating HF conditions—the error rate becomes too high at 200 baud, the data speed
will automatically revert back to 100 baud.
There can be conditions where the data rate is frequently shifting because of rapidly changing conditions or fading;
this can cause data loss of information or lock-up during reception.
PTConn [ ! ] aaaa
(
aa
) Immediate Command
Mode: PACTOR Host:PG
aaaa ( aa ) The callsign of the PACTOR station to be called.
September, 05 12-17