Icom IC-7700 Instruction Manual - Page 91

D Fixed mode MARKER HOLD CENT/FIX F-3 F-4 F-5 ATT EXIT/SET F-2 5 FUNCTIONS FOR RECEIVE Displays signals within the specified frequency range. Conditions on the selected frequency band can be observed at a glance when using this mode. q Push EXIT/SET several times to close a multi-function screen, if necessary. w Push [SCOPE] F-1 to select the scope screen. e Push [CENT/FIX] F-5 to select the fixed mode. • " FIX " is displayed when fixed mode is selected. r Push [ATT] F-2 several times to activate an atten- uator or turn the attenuator OFF. • 10, 20 and 30 dB attenuators are available. • Push and hold [ATT] F-2 for 1 sec. to turn OFF the at- tenuator. t Push [MARKER] F-3 several times to select the marker for transmit frequency or turn the marker OFF. • " R " displays the marker at the receive frequency. (al- ways displayed) • " T " displays the marker at the transmit frequency. • "" appears when the marker is out of range. • The spectrum scope shows the transmit signal while transmitting. This can be deactivated in scope set mode. (p. 5-5) • The spectrum scope shows the peak level hold 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. 5-5) y Push [HOLD] F-4 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. u Push EXIT/SET to exit the scope screen. NOTE: If a strong signal is received, a ghost signal may appear. Push [ATT] F-2 several times to activate the spectrum scope attenuator in this case. The scope bandwidth can be specified for each frequency band independently in scope set mode. (pgs. 5-6 to 5-8) 5-3