ZETRON 15P, Руководство по эксплуатации

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Section 7. Quick Reference
7-3
Each code plan in Table 7-4 through Table 7-6 is broken down into 10 blocks of 100 pager
codes. The blocks are numbered 0 through 9. As you look at a certain 100-block within a
certain code plan in the table, you'll see that it's referred to with a pair of numbers, such as
1+2 or 5+3. This pair of numbers signifies all pagers whose A reed is from the first digit's
tone group and whose B reed is from the second digit's tone group. For instance, 5+3 refers
to all pagers with an A reed from tone group 5 and a B reed from tone group 3.
A block can be referred to according to its position on the chart. The fourth block in Code
Plan B (1+2), labeled 4xx in Table 7-4, can be called the 400-block of Code Plan B. The
seventh block in D (5+1) can be called the 700-block of Code Plan D, and so on.
Pager Capcode
Each two-tone pager is given a four-character code or address that tells which two tones
activate it. Examples of pager addresses are B123, F561, and T625. From this address, the
frequencies of the two tones can be determined.
The first two characters of an address specify the 100-block to which the address belongs. If
a pager address begins with B5, for instance, it belongs to the 500-block of Code Plan B.
When this block is looked up on the charts, a designation of 1+3 is found; thus, the B5 pager
has a first tone that comes from tone group 1, and a second tone that comes from tone group
3. The last two digits of a pager address simply point to specific A and B tones within the
two tone groups.
Example
As an example, consider pager address B542. Looking up B5 in code plans Table 7-4
through Table 7-6 gives us 1+3, which means the tones for A and B are taken from tone
groups 1 and 3 respectively. The 4 in B542 means the A tone is the fourth tone in tone group
1, which, from, Table 7-1 is 410.8 Hz. The 2 means the B tone is the second tone in tone
group 3, or 296.5 Hz.
Summary
The letter of an address selects a code plan. The first number selects a code plan. The first
number selects a 100-block, which is all the possible combinations of two tone groups. The
last two digits locate a combination within the 100-block.