Additional Features: Frequency Range: 9 kHz to 3 GHz 75 ohm input Signal Purity: 105 dBc/Hz 20 kHz Offset; 100 dBc/Hz 10 kHz Offset Total Level Accuracy: Maximum ±1.5 dB High-speed GPIB, Effective for System Applications High Speed Measurement: 20 Traces per Second 6.5-inch TFT Color LCD Built-in Frequency Counter Floppy Disk for Data Saving Large Numeric Display for Measurement Results (In Counter and Power Measurement Mode) Printer Port RS-232 Port VGA output 20 dB Preamp QP detector and EMC filter