Timewave DSP-232, Operating Manual

Page: 53 / 271

Chapter 4 Terminal Interfacing
You DSP-232 always switches to a data transfer mode at the time of connection, unless NOMODE is ON.
NEWMODE determines how your DSP behaves when the link is broken or when the state is changed from
Transmit to Receive with the RECEIVE or CWID characters.
When NEWMODE is ON (default) and the link is disconnected, or if the connect attempt fails, your DSP-232
remains in Converse or Transparent Mode unless you have forced it to return to Command Mode.
NUCr ON | OFF Default: OFF
Host: NR
ON
Null characters are sent to the terminal following
RETURN
s.
OFF Null characters aren’t sent to the terminal following RETURN s.
NULLS sets the number of null characters that will be sent. Some older printer-terminals require extra time for the
printing head to do a (
RETURN
) and
LF
.
NUCR ON
solves this problem by making your DSP send null characters
(ASCII code $00) to your computer or terminal.
NULf ON
|
OFF
Default: OFF
Host: NF
ON Null characters aren’t to the terminal following LF s.
OFF
Null characters aren’t sent to the terminal following
LF
s.
Some older printer-terminals require extra time for the printing head to do a
( RETURN ) and LF . NULF ON solves
this problem my making your DSP send null characters (ASCII code $00) to your computer or terminal.
NULLS
sets the number of null characters that will be sent.
NULLs n Default: 0 (zero)
Host: NU
“
n ” 0 to 30 specifies the number of null characters to be sent to your computer or terminal after a ( RETURN )
or
LF
when
NUCR
, or
NULF
, are
ON
.
NULLS
specifies the number of null characters (ASCII $00) to be sent to the terminal after a (
RETURN
) or
LF
is
sent. NUCR and/or NULF must be set to indicate whether nulls are to be sent after ( RETURN ), LF or both. The
null characters are sent from your DSP to your computer only in the Converse and Command modes.
Opmode Immediate Command
Host: OP
OPMODE is an immediate command that shows the DSP-232’s current mode of operation as well as system status.
Opmode also displays the MORSE speed when in Morse mode. Use the OPMODE command at any time when your
DSP-232 is in the Command Mode to display the present operating mode. Here is a typical example:
cmd:o
OPmode AScii RCVE
PARity n Default: 3 (even)
Host: PR
“
n ” 0 to 3 selects a parity option.
PARITY
sets the DSP’s parity for RS-232 terminal according to the table below:
0 = no parity
4-20 September, 05