User's Manual

ManualsBrandsLotek Wireless ManualsElectronicsTelemetry Receiver

Rev B

The

ESC key is the general "return" operator. Most commonly it returns you to the

main program, restoring the command display on line one. Sometimes it provides a

return from a subprogram to the menu from which it was called. Sometimes it is

used to terminate data entry (of lists or table values) from the keyboard.

The

SET ∆ ("set delta") key is used to set incremental values of frequency, gain or time for use by

the increment and decrement functions (arrow keys). Which variable is set depends on which of

the three other "set" keys (

SET F, SET G, or SET SCAN) were activated last. The three prompts are:

The

HELP key puts the receiver into its help mode. Once HELP has been activated you

may then press any key to get information about its function or about appropriate

entry formats for data. Note that

HELP automatically performs a shift operation (help

data is naturally provided only for functions). Since help is provided for the

SET ∆ function

(shifted

ESC), the SHIFT key, rather than ESC, is used to exit the help mode.

Note that

HELP services are limited to basic information about key functions only and is not a

substitute for the operating manual. In order to conserve program memory,

HELP is not provided

in advanced software versions.

The

SEARCH key provides access to several functions. Its menu is:

The search functions scan through a range of frequencies looking for a signal, using the

frequency increment set by the

SET ∆ operation. If an active signal is found at any frequency the

routine continues scanning until it finds a local maximum, at which point it stops and displays

the maximum signal intensity and the frequency at which it was found. Pressing the

SHIFT key

will continue the search. Because of the pass band characteristics of the receiver's ultra-stable IF

filters there may be more than one local maximum for a given signal, and if the signal is subject

to dynamic fading (due to relative motion of transmitter, receiver or interfering objects) the

maximum signal point(s) may move slightly or change in relative intensity. The search

algorithm is designed to discriminate multiple peaks of equal or increasing magnitude, and locks

on to each one individually until you press

SHIFT. Search functions cycle through their ranges

repeatedly until terminated by

ESC.

SET ∆

ESC

ENTER -> GAIN (01-99)

ENTER -> FREQUENCY

(001-999kHz) >

ENTER - >TIME (01-99 SEC)

HELP

SEARCH: 1)RANGE 2)CONT

3)NEIGHBOURHOOD 4)EXIT