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USER'S GUIDE
TRIES
Using
under these conditions automatically optimizes the
ters.
If you type
TRIES
with an argument the "tries" counter is forced to the entered value. Using this
command to force a new count of tries is not recommended.
n
TXDELAY
Mode: Packet
n
Parameters:
-
TXDELAY
The
command tells your PK-232 how long to wait before sending packet frame data after
keying your transmitter's PTT line.
All transmitters need some amount of start-up time to put a signal on the air; some need more,
some need less. Some general rules apply to these radios:
Crystal-controlled radios with diode antenna-switching don't need much time.
Synthesized radios need time for their phase-lock-loops (PLLs) to lock up and settle on to the
operating frequency.
Radios with mechanical transmit/receive relays need time for the physical movement of the re-
lays.
External amplifiers using RF-driven relay switching frequently require that you increase TXDE-
LAY to allow for the additional delays.
Experiment to determine the best
TXDELAY
can also compensate for certain characteristics of the radio used by the station with
whom you're communicating.
If the distant station's radio has slow AGC recovery or squelch release times when switching
from transmit to receive, increasing your
throughput by retarding the start of your data until the distant station's receiver has reached
full sensitivity.
TXFLOW ON|OFF
Mode: Packet
Parameters:
ON -
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.
TXFLOW
When
is OFF, the PK-232 uses only hardware flow control; all data sent to the terminal
remains fully transparent.
TXFLOW
When
and
XOFF
and
) to control the input from the terminal.
TRFLOW
Unless
is also ON, only hardware flow control is available to the computer or terminal to
control output from the PK-232.
PK232UG Rev. B 9/86
Mnemonic: TXD
0 to 120 specifies ten-millisecond intervals.
TXDELAY
Mnemonic: TXF
Software flow control for the PK-232 can be activated in Transparent Mode.
XFLOW
are ON, the PK-232 uses the Start and Stop characters (set by
Default: 30 (300 msec.)
value for a specific radio.
TXDELAY
may reduce retries and actually improve
Default: OFF
6-67
COMMAND SUMMARY
PACLEN
MAXFRAME
and
parame-
XON
169
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