AOR SR2000A Instruction Manual page 12

SPAN.
(4) End Frequency (EF)
The frequency displayed on the right bottom of the screen is the End (Stop) Frequency
of the SPAN.
(5) Seek Mode
The seek mode displays the current operation mode such as VFO mode, Memory Read,
Memory Scan, Search, and FFT Search.
(6) Receiver Information (RFU)
The RFU information is displayed on the top of the LCD screen, and displays the
Monitored frequency, receive mode, frequency step size, signal strength, RF amplifier
status, and attenuator level.
(7) Operating Mode (OP)
Three operating modes are available with the SR2000A.
Spectrum : Spectrum Analyzer mode
StepReso.: Step Resolution mode
Channel : Channel Scope mode (operates only in the VFO mode)
(8) Resolution Band Width (RBW)
Displays the current resolution in KHz. The resolution is selectable from 1 KHz, 4 KHz,
32 KHz, 64 KHz, and 128 KHz. Greater detail is obtained by selecting 4 KHz, often with a
lower baseline while 128 KHz provides faster refresh rates.
Note: If the spectrum frequency span is set between 160 ~ 422 KHz, the RBW is
automatically displayed in 4 KHz.
The RBW is not selectable in the WSP mode. (4 KHz fixed)
(9) MARKER (10) Marker Information
The frequency and strength of signals may be read on the screen. Under the Marker
menu, the peak signal search is also available.
(11) Volume Level (VOL)
Volume level indicator represents the audio output level through the rear panel external
Speaker jack and headphones jack. While this icon is highlighted, the volume level can
be adjusted from 0 to 72 (maximum). Beware of excessive volume levels when using the
headphones.
(12) NSQ/LSQ
Displays the squelch setup. NSQ stands for Noise Squelch and LSQ for Level Squelch.
Levels range from 0 to 72.
(13) Signal level indicator
Received frequencies are plotted on the horizontal scale and signal strength on the
vertical scale, showing the overall effect of signal activity over the given frequency span.
The bottom horizontal line is the 'baseline'. When signals are entered, they produce
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