Specifications

PK-232 OPERATING MANUAL COMMAND SUMMARY
XBaud "n" Default: 0
Mode: ASCII/Baudot Host: XB
Parameters:
”n” — Specifies an exact baud rate used in receiving ASCII and Baudot
RTTY.
XBAUD enables hardware decoding of ASCII and Baudot signals using the PK-232's
8530 Serial Communications Controller IC. This can allow the PK-232 to achieve
better copy of these signals as well as allow non-standard data rates to be
received. One disadvantage of XBAUD is that the software commands RXREV and
TXREV can not be used to invert the data so the correct sideband must be used.
To use XBAUD simply enter the data rate that is desired in either ASCII or Baudot
modes. For example a 20-meter Baudot RTTY enthusiast may want to set XBAUD to 45
to improve copy of weak signals on the band.
It is important to remember that XBAUD overrides both the RBAUD (in Baudot) and
ABAUD
(in ASCII) as
well as the inverting commands TXREV and RXREV. This means
that if XBAUD has been set to 45 for Baudot operation, it should be reset to 0
before changing modes to ASCII. Otherwise the PK-232 will attempt to receive
ASCII at 45 bauds! To help reduce the chance of this error occurring, the PK232
will disable XBAUD by setting it to 0 every time the SIGNAL Identification mode
is used and the command OK is entered.
The XBAUD command supports data rates from 1 to 9600 bits per second although the
PK-232 internal modem only supports data rates to 1200 baud.
IFlow ON/OFF Default: ON
Mode: All Host: XW
Parameters:
ON — XCN/XOFF (software) flow control is activated.
OFF — XON/XOFF flow control is disabled - hardware flow control is enabled.
When XFLOW is ON, software flow control is in effect - it's assumed that the
computer or terminal will respond to the PK-232's Start and Stop characters
defined by the XON and XOFF commands. Similarly, the PK-232 will respond to the
computer’s start and stop characters defined by START and STOP.
When XFLOW is OFF, the PK-232 sends hardware flow control commands via the CTS
and is controlled via either the RTS or the DTR line.
2/93 A-82
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