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A.2.2<br />
Default Values<br />
Almost all commands have initial or default values that are loaded<br />
when the <strong>PK</strong>-<strong>232</strong> is first turned on. The <strong>PK</strong>-<strong>232</strong> assumes these default<br />
values to be best suited for the "average" amateur station operation.<br />
There is no rule that says "you must keep the defaults". You can (and<br />
should) change the default values as required for your individual<br />
operating needs, type of equipment, or local customs.<br />
A.2.3<br />
Modes in which the command is used<br />
Many commands work only in a specific operating mode such as packet.<br />
Others commands function in all modes. The second line of the command<br />
description tells the mode or modes in which the command functions.<br />
A.2.4<br />
HOST Mode Abbreviations<br />
If you are a computer programmer and wish to write an application for<br />
the <strong>PK</strong>-<strong>232</strong>, you may want to consider using the HOST Mode. Information<br />
on HOST Mode is available in the <strong>PK</strong>-<strong>232</strong> Technical Reference <strong>Manual</strong>.<br />
A.3 Parameters and Arguments<br />
If a command requires Parameters, the type of parameter is indicated<br />
after the command name as well as its default value. Three different<br />
types of parameters are used: Boolean, Numeric and Text or String.<br />
A.3.1<br />
Boolean Parameters<br />
Boolean parameters use one value out of a choice of only two possible<br />
values, such as ON or OFF, YES or NO, or EVERY or AFTER. Boolean<br />
parameters can also be toggled with an argument of "TOGGLE" or "T."<br />
This is useful, for example, in the case of RXREV and TXREV.<br />
A.3.2<br />
Numeric Parameters<br />
A parameter designated as "n" is a numeric value. Numeric values can<br />
be entered by typing them in familiar decimal numbers, or optionally,<br />
in hexadecimal numbers (base 16).<br />
When using hexadecimal notation, you must type a $ in front of the<br />
number to tell the <strong>PK</strong>-<strong>232</strong> that this is a "hex" number.<br />
Here's a brief explanation of "hex" numbers:<br />
o<br />
o<br />
The "digits" of a hex number represent powers of 16 in the same<br />
manner as the powers of 10 represented by a decimal number.<br />
The numbers 10 through 15 are indicated by hexadecimal digits A<br />
through F. For example:<br />
$1B = (1 x 16) + (11 x 1) = 27 (decimal)<br />
$120 = (1 x 16 x 16) + (2 x 16) + (0 x 1) = 288 (decimal)<br />
For numeric parameters the arguments "ON" or "Y" set the parameter<br />
value to its default. Arguments "OFF" or "N" set the value to 0.<br />
Baud-rate parameters can use arguments UP (U) or DOWN (D) to select<br />
the next higher or lower baud rate.<br />
4/91 A-2<br />
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