Timewave DSP-232, Operating Manual

Page: 85 / 271

Chapter 5 Packet Operation
AEA products calculate the TAPR
ACKTIME value based on the setting of HBAUD . The TAPR DEADTIME
command is similar to AEA’s
SLOTTIME
command.
ACRPack ON | OFF Default: ON
Mode: packet Host: AK
ON
The
SENDPAC
character is added to packets sent in Converse mode.
OFF The SENDPAC character isn’t added to the packets.
With
ACRPACK ON
, all packets sent in the Converse mode include the
SENDPAC
character, normally a
( RETURN ), as the last character of the packet.
When
ACRPACK is OFF , the SENDPAC character is interpreted as a command, and isn’t included in the packet
or echoed to the terminal.
ACRPACK ON
and
SENDPAC $0D
produce a natural conversational mode.
ALFPack ON
|
OFF
Default: OFF
Mode: packet Host: AP
ON A line feed is added after each ( RETURN ) sent in outgoing packets.
OFF
A line feed isn’t added to outgoing packets (default).
ALFPACK
is similar to
ALFDISP
, except that the
LF
characters are added to outgoing packets rather than to text
displayed on your computer screen. If the person you’re talking to reports overprinting of packets from your station,
set
ALFPACK ON .
ALFPACK is disabled in the Transparent mode.
AUdelay n Default: 2 (20 msec.)
Mode: Baudot, ASCII, FEC, PTSEND, and packet Host: AQ
“
n ” 0 - 120 specifies in units of 10 mS intervals, the delay between PTT going active and the start of the
transmit AFSK audio tones.
In some applications you may need to make a time delay from the moment the radio PTT line is keyed and the time
that audio is produced from the DSP. Most notably, on HF when an amplifier is used, arcing of the amplifier’s relay
contacts may occur if drive to the amplifier is applied before the contacts have closed. If arcing occurs, increase
AUDELAY slowly until the arcing stops.
In VHF or UHF FM operation, some synthesized transceivers may produce undesirable spurious emissions if audio
and PTT are applied at the same time. These emissions may be reduced by setting
AUDELAY to roughly half of
TXDELAY
.
Please note that
AUDELAY
must always be less than
TXDELAY
. It’s advisable that
AUDELAY
be set lower than
TXDELAY by a setting of 10. For example, you’ve determined that TXDELAY 20 works well for your transceiver.
Subtracting 10 from 20 yields 10, which is the recommended setting for
AUDELAY
. If a setting of
AUDELAY 10
is too short, then set both TXDELAY and AUDELAY higher.
Ax25l2v2 ON
|
OFF
Default: ON
Mode: packet Host: AV
ON The DSP uses AX.25 Level 2 Version 2.0 protocol.
5-24 September, 05