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Packet:<br />
The TRACE command activates the AX.25 protocol display. When TRACE is ON all<br />
received frames are displayed in their entirety, including all header<br />
information. The TRACE display is shown as it appears on an 80-column display.<br />
The following monitored frame is a sample:<br />
W2JUP*>TESTER :<br />
This is a test message packet.<br />
Byte Hex Shifted ASCII ASCII<br />
000: A88AA6A8 8AA460AE 6494AAA0 406103F0 TESTER0W2JUP 0.x ......`.d...@a..<br />
010: 54686973 20697320 61207465 7374206D *449.49.0.:29:.6 This is a test m<br />
020: 65737361 67652070 61636B65 742E0D 299032.80152:.. essage packet...<br />
The byte column shows the offset into the packet of the first byte of the line.<br />
The hex display column shows the next 16 bytes of the packet, exactly as<br />
received, in standard hex format. The shifted ASCII column decodes the highorder<br />
seven bits of each byte as an ASCII character code. The ASCII column<br />
decodes the low-order seven bits of each byte as an ASCII character code.<br />
FAX:<br />
When <strong>Operating</strong> in FAX mode, TRACE is ON, and PRFAX is OFF, the graphics escape<br />
sequences and dot data are sent to the terminal with each byte expanded to two<br />
Hexadecimal characters. This helps get around the limitations of many terminal<br />
programs that do not allow 8-bit data to be saved to disk as an ASCII file.<br />
Interspersed command prompts and even the L and R commands would have no<br />
effect on the final data and it could be translated back to binary data with a<br />
computer program.<br />
_______________________________________________________________________________<br />
Trans<br />
Immediate Command<br />
Mode: All<br />
Host: Not Supported<br />
_______________________________________________________________________________<br />
TRANS is an immediate command that switches the <strong>PK</strong>-<strong>232</strong> switch from the Command<br />
Mode to Transparent Mode. The current state of the radio link is not affected.<br />
Transparent Mode is primarily useful for computer communications. In<br />
Transparent Mode "human interface" features such as input editing, echoing of<br />
input characters, and type-in flow control are disabled.<br />
o<br />
o<br />
Use Transparent Mode for transferring binary or other non-text files.<br />
To exit the Transparent mode, type the COMMAND character (default )<br />
three times within the time period set by CMDTIME (default 1 Second).<br />
_______________________________________________________________________________<br />
TRFlow ON|OFF<br />
Default: OFF<br />
Mode: All<br />
Host: TW<br />
_________________________________ Parameters: _________________________________<br />
ON - Software flow control for the computer or terminal RECEIVING data is<br />
activated in Transparent Mode.<br />
OFF - Software flow control for the computer or terminal RECEIVING data is<br />
disabled in Transparent Mode.<br />
_______________________________________________________________________________<br />
8/91 A-73<br />
From The <strong>N3UJJ</strong>.COM Document Library