This is the same text as that engraved on the back of the UCR401 and UCR411a receivers.
FOR SPECTRUM ANALYZER
Press all 3 keys simultaneously to either enter or exit the spectrum analyzer. MENU key to stop, zoom or start scan. Zoom is indicated by < > icons. In zoom, since most data is off the screen, the cursor is centered and the data scrolls. Use the UP and DOWN keys to scroll. To save cursor frequency, press all three simultaneously and then select "use new". To clear spectrum, turn power OFF briefly.
FOR PILOT BYPASS
Step the menu key to the MAIN window. Press the MENU and UP keys together for b bypassed or p normal plot.
FOR THE 1 kHz TEST TONE
Step menu key to SETUP/EXIT window. Step SEL UP key to SETUP/TONE window. Press TONE (MENU) key. Press TONE (UP) key. Step LVL (UP/DOWN) keys to set tone level. Press MENU key to stop and EXIT tone.
TO LOCK AND UNLOCK
Press and hold the MENU key for 5 seconds.
TO RESET BATTERY TIMER
Press and hold MENU and DOWN key together for one second.