GETTING STARTED 15 Power Key Power key selects the power state between the standby mode (Red LED on) and power on mode (Green LED on). To turn on/off the main power, use the power switch on the rear panel. See page20 for the power up sequence. Arrow Keys Arrow keys select parameters in various occasions; Up/Right for increasing, Down/Left for decreasing. Scroll Knob Scroll knob sets or selects parameters in various occasions. In many cases, it works in tandem with the Arrow keys. Input Terminal RF INPUT 50Ω+30dBm MAXMAXDC ±25V Input terminal accepts RF input signals. • Maximum +30dBm • Input impedance 50Ω Pre-Amplifier Power Supply Terminal 100mA MAX.DC 9VOUTPUT Pre-amplifier power supply terminal provides power for the optional GAP-801 or GAP-802 pre-amplifier. For details, see page56. Numerical keys set various parameters. In many cases, they work in tandem with the Arrow keys and Scroll knob. Numerical Keys Unit Keys Enter Key BK SP key Example Key sequence 9kHz −3.8dB 1.0mS 9 + Enter Correction Optional TG Output Terminal TG OUTPUT 50ΩMAXDC ±25VOutputs the optional Tracking Generator signal. Reversed power should not exceed +30dBm. For details, see page142. USB Host Connector Via the USB port (typeA male), display images may be saved to or recalled from USB flash drives For details, see page113.