AOR AR8200 Spezifikationen PDF herunterladen (Seite 24)

(3) Basic manual operation of the receiver

The following information explains how to tune to a specific frequency, change receive mode etc.

&Note: When the AR8200 is switched OFF, all VFO data will be automatically stored into

flash-ROM memory storage. No battery or capacitor is required for memory backup. Should

the NiCad cells (or dry batteries if in use) become completely exhausted, the last stored

memory channel or last VFO data ‘may’ be lost.

CURSOR

The CURSOR may apparently ‘go to sleep’ at times when menus are called. This is because of the

many tasks called by the microprocessor, it is simply doing something else at the time you call it. This

is particularly noticeable when recalling memory banks when only a few channels have been stored.

3-1 Switching On

Set the squelch control to the 12 o’clock position and rotate the volume control to the 12 o’clock position.

and hold the key until the AR8200 powers up. It is never a good idea to switch on

any receiver with an earphone connected, there may be an audible click when the unit is switched on or

the volume may be accidentally set uncomfortably high.

In the default state, the LCD will show the opening message “WELCOME TO THE NEW WORLD OF

AR8200” across the first four lines, at the same time the microprocessor generates the ‘boot up data’

required to control the receiver.

In normal use, the squelch control should be rotated clockwise until the background noise

just

cancelled, this is known as ‘

threshold

’ and is the most sensitive setting for the

squelch control. Do not rotate the control too far clockwise or only the stronger local

signals will be heard. If you find setting the squelch control difficult, try removing the aerial

from the receiver.

Should you encounter problems in setting the volume level, the key on the left hand

panel to momentarily defeat (open) the squelch so that a comfortable volume level may be set.

It is best to the key at this time to place the AR8200 in a known state of operation.

The condition of “VFO” (1VFO) or “2VFO” is generally referred to as

manual mode

. The “2VFO” legend

will be displayed in the upper left of the LCD to confirm selection.

&Note: If the AR8200 has no data input via the keypad or other controls for 90 seconds,

some menus will time out and the AR8200 will return to its previous task just as if the

key had been operated.

3-2 2VFO twin VFO selection

The AR8200 receiver has

a twin VFO system

being identified as “V-A” and “V-B” on the LCD to the left

of the frequency readout. The term VFO historically means ‘

Variable Frequency Oscillator

’ and today

refers to a tuneable data store which contains frequency, mode, step, step-adjust, attenuator etc.

Section 3, 3-1, 3-2

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