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PK-232 MBX Operating Manual - N3UJJ

PK-232 MBX Operating Manual - N3UJJ

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1-channel: No effect.<br />

2-channel: 0 and 2 show Channel A.<br />

1 and 3 show Channel B.<br />

4-channel: 0 shows Channel A.<br />

1 shows Channel B.<br />

2 shows Channel C.<br />

3 shows Channel D.<br />

_______________________________________________________________________________<br />

TDm<br />

Immediate Command<br />

Mode: TDM<br />

Host: TV<br />

_______________________________________________________________________________<br />

TDM is an immediate command that places the <strong>PK</strong>-<strong>232</strong> in the TDM receive mode.<br />

TDM stands for Time Division Multiplexing, also known as Moore code and is the<br />

implementation of CCIR Recommendation 342.<br />

Use the <strong>PK</strong>-<strong>232</strong> SIGNAL command first to determine the bit rate and to make sure<br />

that the signal is actually TDM. The SIGNAL command can detect one or two<br />

channel TDM transmissions.<br />

The TDM command forces bit phasing; do this when changing frequency to another<br />

TDM signal. This is also useful when the <strong>PK</strong>-<strong>232</strong> synchronizes on the wrong bit<br />

in the character stream, which is likely on a signal which is idling.<br />

TDM stations idle MOST of the time, so you may have to leave the <strong>PK</strong>-<strong>232</strong><br />

monitoring for an hour or two before any data is received.<br />

_______________________________________________________________________________<br />

TIme "n"<br />

Default: $14 <br />

Mode: All<br />

Host: TM<br />

_________________________________ Parameters: _________________________________<br />

"n" - 0 to $7F (0 to 127 decimal) specifies an ASCII character code.<br />

_______________________________________________________________________________<br />

The TIME command specifies which control character sends the time-of-day in the<br />

text you type into the transmit buffer or into a text file stored on disk.<br />

At transmit time, the <strong>PK</strong>-<strong>232</strong> reads the embedded control code (default ),<br />

reads the time-of-day from the <strong>PK</strong>-<strong>232</strong>'s internal clock and then sends the time<br />

to the radio in the data transmission code in use at that time. If the DAYTIME<br />

has not been set, and a control-T will cause the <strong>PK</strong>-<strong>232</strong> to send an asterisk (*).<br />

When DAYSTAMP is set ON, the date is transmitted with the time.<br />

NOTE: The TIME command cannot be embedded in CTEXT, BTEXT, MTEXT or AAB.<br />

8/91 A-71<br />

From The <strong>N3UJJ</strong>.COM Document Library

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