Chapter 5 Packet Operation
Note
: If you need to use this command, you also need to have the black wire hooked up in the supplied radio cable.
TRACe
ON
|
OFF
Default: OFF
Mode: packet/Baudot/AMTOR/PACTOR
Host: TR
ON
Trace function is activated.
OFF
Trace function is disabled.
Packet
:
TRACE
activates the AX.25 protocol display. With
TRACE
ON
, all received frames are displayed in their
entirety, including all header information. The
TRACE
display is shown as it appears on an 80-column display. The
following monitored frame is a sample:
KB6IUX*>TESTER <UI>:
This is a test message packet.
Byte
Hex
Shifted ASCII
ASCII
000: A88AA6A8 8AA460AE 6494AAA0 406103F0 TESTER0KB6IUX0.x
......`.d...@a..
010:
54686973
20697320
61207465
7374206D
*449.49.0.:29:.6
This is a test m
020:
65737361 67652070 61636B65 742E0D 299032.80152:.. essage
packet...
The byte column shows the offset into the packet of the first byte of the line. The hex display column shows the
next 16 bytes of the packet, exactly as received, in standard hex format. The Shifted ASCII column decodes the
high-order seven bits of each byte as an ASCII character code. The ASCII column decodes the low-order seven bits
of each byte as an ASCII character code.
Interspersed command prompts and even the L and R commands would have no effect on the final data, and it could
be translated back to binary data with a computer program.
TRIes
n
Default: 0
Mode: packet
Host: TI
“n”
0 to 15 specifies the current
RETRY
level on the selected input channel.
TRIES
retrieves (or forces) the count of “retry counter” on the data channel presently selected.
If you type
TRIES
without an argument, the DSP returns the current number of tries if an outstanding
unacknowledged frame exists. If no outstanding unacknowledged frame exists, the DSP returns the number of tries
required to get an
acknowledgement for the previous frame.
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.
TXdelay
n
Default: 30 (300 mS)
Mode: packet, Baudot and ASCII
Host: TD
“n”
0 to 120 specifies 10 mS increments.
TXDELAY
tells your DSP how long to wait before sending packet frame data after keying your transmitter’s PTT
line.
All transmitters experience a certain length of time from the instant the PTT line is keyed to when the signal is
actually transmitted. The default value of 300 mS should work with almost all transceivers. In fact, many of the
newer transceivers can use smaller
TXDELAY
values. (Crystal-controlled transceivers can often use smaller values
as well.) On the other hand, tube-type transceivers and amplifiers can require a longer time to switch and may
September, 05
5-45
Содержание DSP-232
Страница 120: ...Chapter 6 GPS Applications September 05 6 1...
Страница 138: ...Chapter 7 Maildrop Operation 7 18 September 05...
Страница 158: ......
Страница 159: ...Chapter 8 ASCII and Baudot Operation September 05 8 1...
Страница 185: ......
Страница 186: ...Chapter 9 AMTOR Operation September 05 9 1...
Страница 198: ......
Страница 199: ...Chapter 10 Morse Operation September 05 10 1...
Страница 207: ......
Страница 208: ...Chapter 11 SIAM and NAVTEX Operation September 05 11 1...
Страница 230: ......
Страница 231: ...Chapter 12 PACTOR Operation September 05 12 1...
Страница 240: ...Chapter 13 Troubleshooting September 05 13 9...
Страница 254: ...Chapter 13 Troubleshooting 13 9...
Страница 256: ...DSP 232 Manual Addendum September 05 AD 2...
Страница 259: ...Appendix A Radio Connections Radio Connection Diagrams September 05 A 3...
Страница 260: ...Appendix A Radio Connections A 4 September 05...
Страница 261: ...Appendix A Radio Connections September 05 A 5...
Страница 262: ...Appendix A Radio Connections A 6 September 05...
Страница 263: ...Appendix A Radio Connections September 05 A 7...
Страница 267: ...Appendix D Mailbox Upgrade September 05 D 2...
Страница 268: ...Appendix E Schematics and Pictorial September 05 E 3...