User's Manual

Keypad

Most of the 16 keys have two functions, primary and shifted. The primary functions are

indicated by the characters on the lower half of the key. The shifted functions are indicated by

the characters on the upper half of the key. To access the primary functions simply press only

the desired key. To access shifted functions, begin by pressing the SHIFT key and then press

the function key. For example, to access the F2 function, press in sequence:

SHIFT

In the following key descriptions, reference will be made only to the function itself. IT WILL BE

UNDERSTOOD that shifted functions are preceded by the SHIFT key.

0-9

The numeric keys from 0 to 9 are used to enter numeric data such as frequencies, gain levels,

partition numbers etc. They are also used to select menu options by pressing the number that

corresponds to the menu selection shown.

The decimal key is used for entry of a decimal point when real numbers are required during data

entry. As an example, this is required when entering the local oscillator frequency during

EPROM initialization (see F1 key). Occasionally, it is also used for control purposes.

The upward arrow key is used for various functions requiring incrementing of values or control

of processes. Occasionally, it is also used as an enter key. At the power-on default display, this

key increments the value of frequency, gain or scan time by an amount defined with the SET

∆

key. The value changed depends on which SET key was most recently pressed (SET G, SET F,

or SET SCAN).

The downward arrow key is used to decrement values or control processes. At the power-on

default display, this key decrements the value of frequency, gain, or scan time by an amount

defined with the SET

∆ key. The value changed depends on which SET key was most recently

pressed (SET G

, SET F, or SET SCAN). The variable is selected by whichever of the SET G, SET

F, or SET SCAN keys were most recently activated. The decrement amount is the last value entered

using the SET

∆ key.

CODE

The CODE key is not used in the Suretrack receiver.