Timewave DSP-232, Operating Manual

Page: 39 / 271

Chapter 4 Terminal Interfacing
The value n is sent directly to the DSP chip to control the sample rate of the ANALOG mode.
AUTOBaud ON
|
OFF
Default: OFF
Host: AB
ON
Autobaud routine always present at power-up or RESTART .
OFF
Autobaud routine active at RESET or power-up only if battery jumper is removed.
With
AUTOBAUD OFF
, the DSP performs the autobaud function only when powering - up or after a
RESET
. With
AUTOBAUD ON , the DSP performs the autobaud routine every time it’s powered-up, and every time the
RESTART
command is entered. The stored parameters (for example,
MYCALL
) are saved if the battery jumper is
connected. The unit displays the autobaud message at the same rate as the last setting of
TBAUD
.
AUTOBAUD ON
is helpful when moving the unit from one computer to another where the terminal data rates are different.
In the autobaud routine, only one asterisk (*) is needed to set
TBAUD . The autobaud routine detects 110, 300, 600,
1200, 2400, 4800, 9600, and 19,200 baud at either 7 bits even parity or 8 bits no parity.
AUTOThr
Host: AU
The
AUTOT
hreshold command is used to automatically find the correct threshold setting for the Packet, Pactor,
Amtor, and Morse modes.
To use Autothreshold, tune your radio to a frequency with no signal (make sure the frequency of the radio
corresponds to your currently selected operating mode). Type
AUTOT
in command mode. The DSP will find the
correct threshold setting using a range from 0-100. If you switch to another mode, you will need to use AUTOT for
this mode as well. Also see the
THRESHLD
command for manually setting the Threshold.
AWlen n Default: 7
Host: AW
“
n ” 7 or 8 specifies the number of data bits per word.
The parameter value defines the digital word length used by the serial input/output (I/O) terminal port and your
computer or terminal program.
AWLEN
will most likely be set properly by the DSP’s autobaud routine. Still, you may want to change the ASCII
word-length at some time to accommodate a particular terminal program you want to use.
For plain text conversations with the DSP,
AWLEN 7 or 8 may be used. For Transparent mode binary file transfers
and Host mode operation,
AWLEN 8
must be used.
The
RESTART
command must be issued before a change in word length takes effect. Don’t change
AWLEN
unless the terminal can be changed to the same setting.
BKondel ON | OFF Default: ON
Host: BK
ON The sequence BACKSPACE - SPACE - BACKSPACE is echoed when a character is deleted from the
input line.
OFF The backslash character ( \ ) is echoed when a character is deleted.
4-6 September, 05