Key Commands - AOR SR2000A Instruction Manual

vertical lines, and the higher the line, the stronger the signal. A 50 dB range is provided
by the scale which is divided into 10 dB increments. The vertical scale is adjustable in six
levels by altering the internal amplifier (amplitude). The horizontal scale is split into ten
segments indicating the frequency span (bandwidth) in use. The marker is designed to
move across one segment by one full rotation of the dial knob.
(14) Function Key Indicator
When the function key is pressed followed by certain keys, they serve a secondary
function. The secondary function is printed above the respective key. While the function
key is pressed, the reversed FUNC icon appears on the top left corner of the screen.
(15) VFO (Variable Frequency Oscillator)
The SR2000A has a nine (9) VFO system, identified from VFO-A to VFO-I. Displayed on
the previous page example is VFO-A.
Note: Relationship between Frequency Span and Frequency Step
The LCD provides a high resolution of 320 steps from the left to right edges of the screen
X-axis. A frequency bandwidth represented by one step is calculated as SPAN/320.
This is done automatically by the SR2000A in the Spectrum Analyzer and Step Resolution
Modes. This bandwidth differs from the frequency step size displayed in the Receiver
Information (RFU).
Resolution Bandwidth (RBW)
The resolution is selectable from 1 KHz, 4 KHz, 32 KHz, 64 KHz, and 128 KHz. Greater
detail is obtained by selecting 1 KHz, often with a lower baseline while 128 KHz provides
faster refresh rates.

5-2 Key Commands

The SR2000A allows user-friendly operation through 20 main keys, 3 basic operation keys and
3 soft keys. The selected functions are displayed on the LCD screen. The table below
describes the functions allocated to each of the main keys and the basic operation keys.
KEYS
1~9, 0 , . (period)
FUNC+1
FUNC+2
FUNC+2 (press & hold)
FUNC+3
FUCN+3 (press & hold)
FUNC+4
FUNC+5
FUNC+6
FUNC+7
FUNC+7 (press & hold)
FUNC+8
FUNC+9
FUNC+. (period)
FUNC+. (period)(press & hold)
FUNC+0
MODE
FUNCTIONS
As entered
[FFT] FFT Search
[SRCH] search mode
[SRCH] search bank input, settings
[SCAN] memory channel mode, memory scan
[SCAN] memory channel input, settings
[VFO] VFO mode, VFO switch
[S SCAN] select scan
[S SET] select memory set
[PRIO] monitoring priorities
[PRIO] monitoring priorities settings
[DEL] deletion of memory channels and search banks
[CONFIG] SR2000A's overall configuration
[OFFSET] monitoring offset settings
[OFFSET] frequency settings
[OBS] operation mode selection
[MODE] receiving mode selection
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