PK-232 – MBX OPERATING MANUAL COMMAND SUMMARY
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TXdelay "n" Default: 30 (300 msec.)
Mode: Packet, Baudot and ASCII Host: TD
Parameters: "n" - 0 to 120 specifies ten-millisecond intervals.
The TXDELAY command tells your PK-232 how long to wait before sending packet frame data after
keying your transmitter's PTT line (default 300 msec). All transmitters need some amount of start-
up time to put a signal on the air. The default value of 300 msec should work with almost all trans-
ceivers.
In fact many of the newer transceivers can use smaller TXDELAY values. Crystal controlled trans-
ceivers can often use smaller values as well. On the other hand, tube-type transceivers and ampli-
fiers can require a longer time to switch and may require TXDELAY to be increased. Experiment
with the value to determine the shortest setting you can use in reliably in Packet.
Baudot and ASCII use TXDELAY between PTT ON and the start of transmitted data.
TXFlow ON|OFF Default: OFF
Mode: Packet Host: TF
Parameters: ON - Software flow control for the PK-232 is activated in Transparent Mode.
OFF - Software flow control for the PK-232 is disabled in Transparent Mode.
When TXFLOW is ON, the setting of XFLOW determines the type of flow control used in Transpar-
ent Mode by the PK-232 to control TRANSMITTED data.
When TXFLOW is OFF, the PK-232 uses only hardware flow control to control TRANSMITTED data;
all data sent to the terminal remains fully transparent.
When TXFLOW and XFLOW are ON, the PK-232 uses the Start and Stop characters (set by XON
and XOFF) to control the input from the computer.
TXRev ON|OFF Default: OFF
Mode: Baudot/ASCII/AMTOR Host: TX
Parameters: ON - Transmit data polarity is reversed (mark-space reversal).
OFF - Transmit data polarity is normal.
Use the TXREV Command to reverse the mark and space in the transmitted AFSK and FSK signals.
In some cases, the station you're working may be receiving inverted data although it is transmit-
ting in correct polarity. Set TXREV ON to reverse the sense of your transmitted signals.
TXREV only works on ABAUD and RBAUD at speeds up to 150 baud.
UBit "n" ON|OFF Default: 0
Mode: All Host: UB
Parameters: "n" - 0 to 255 specifying a User BIT that may be set ON or OFF.
The UBIT is an extension of the CUSTOM command which allows up to 255 ON/OFF functions to
be added to the PK-232 without burdening users with a large number of commands. The functions
controlled by UBIT are not things that most users will ever have to change. Still they are important
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