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PK-232 MBX Operating Manual - N3UJJ

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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

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