Icom IC-R9500 Instruction Manual - Page 68

5 RECEIVE FUNCTIONS ■ Spectrum scope screen D Center mode Multifunction switch [F-2] [F-6] [F-1] [F-3] [F-5] [EXIT/SET] MENU1 SPAN BW/SPEED ATT MENU2 W-BPF [F-1] [F-2] [F-3] [F-4] HOLD CENT/FIX PEAK SET [F-5] [F-6] [F-7] • Observed indication example This DSP-based spectrum scope allows you to display the conditions on the selected band, as well as relative strengths of signals. The IC-R9500 has two modes for the spectrum indication- one is center mode, and anther one is fixed mode. In addition, the IC-R9500 has a mini-scope screen to save screen space. Displays signals around the set frequency within the selected span. The set frequency is always displayed at the center of the screen. q Push [EXIT/SET] several times to close a multifunction screen, if necessary. w Push [F-1•SCOPE] to select the scope screen. • The spectrum scope shows the peak level holding function. Peak levels are displayed in the background of the current spectrum in a different color until the receive frequency changes. This can be deactivated and the waveform color can be set in scope set mode. (p. 5-7) e Push [F-6•CENT/FIX] to select the center mode. • " CENTER " is displayed when center mode is selected. r Push [F-2•SPAN] once. • Multifunction switch guide changes to the span setting guide. t Push [SPAN+] or [SPAN-] several times to select the scope span. • ±2.5 k, ±5.0 k, ±10 k, ±25 k, ±50 k, ±100 k, ±250 k, ±500 k, ±1 M, ±2.5 M and ±5 MHz are available. y Push [F-3•BW/SPEED] once. • Multifunction switch guide changes to the resolution band width/speed setting guide. u Push [BW+] or [BW-] several times to select the resolution band width. • 0.2 k, 0.5 k, 1 k, 2 k, 5 k, 10 k and 20 kHz are available. i Push [SPEED-] or [SPEED+] several times to select the sweep speed. o Push [F-4•ATT] several times to activate an attenuator or turn the attenuator OFF. • 10, 20 and 30 dB attenuators are available. !0 Push [F-5•HOLD] to freeze the current spectrum waveform. • " HOLD " appears while the function is in use. • The peak hold function can be deactivated in scope set mode. !1 Push [EXIT/SET] to exit the scope screen. NOTE: If a strong signal is received, a ghost waveform may appear. Push [F-4•ATT] several times to activate the spectrum scope attenuator in this case. Spurious signal waveforms may be displayed if generated in the internal scope circuit and do not indicate a receiver malfunction. 5-2