Spectrum Analyzer 9kHz-1.8GHz - The 8591E Spectrum Analyzer brings powerful, comprehensive measurement capabilities to RF, microwave, and digital applications. The unit cover the frequency range 9kHz to 1.8GHz at 50-ohms and 1MHz to 1.8GHz at 75-ohms. Manufacturer's Options: Option 001 = 75-ohm Input, 004 = Precision Frequency Reference, 009 = LO and Sweep + Tune Option, 010 = Tracking Generator, 011 =Built-in Tracking Generator, 75 Ohm, 021 =GPIB, 023 =RS232, 040 =Front Panel Protective Cover w/CRT Viewing Hood, 041 =GP-IB Interface and Parallel Printer Interface, 101 =Fast Time-Domain Sweeps and Analog + Display, 102 =AM/FM Demodulator with Speaker and TV Sync Trigger, 103 =Quasi-Peak Detector and AM/FM Demodulator with Speaker, 105 =Time-Gated Spectrum Analysis, 107 =TV Receiver Video Tester, 119 =Noise Figure, 130 =Narrow Resolution Bandwidths (30 Hz,100 Hz,300 Hz and 200 Hz EMI), 140 =Narrow Resolution Bandwidths/Precision Frequency Reference, 151 =DSP, Fast ADC, and Digital Demodulator, 301 =TV Sync. Trigger Capability, Fast Time Domain Sweeps, AM/FM Demodulator, and Analog + Display