The RSA3408A is a portable real-time spectrum analyzer having RF measure- ment capability up to 8 GHz with wide vector span of 36 MHz. The real-time spectrum analyzer has a vastly different architecture from traditional tools, and is uniquely capable of capturing continuous, intermittent, or random signals with equal ease. The waveform and measurement results of data acquired seamlessly can be displayed in various formats such as spectrum, spectrogram containing three dimensional information of frequency, time, and amplitude/phase, time versus amplitude/frequency/phase, AM/FM/PM demodulation, and optionally, digital demodulation. Features DC to 8 GHz measurement frequency range 100 Hz to 3 GHz measurement span and 36 MHz vector span Real-time analysis for seamless capture of time-varying RF signals Spectrum analysis of power, ACPR, C/N, OBW, EBW, and spurious Analog modulation analysis of AM, PM, FM, ASK and FSK signals Digital modulation analysis ranging from BPSK to 256QAM (Option 21) Time characteristic analysis including pulse measurements CCDF analysis AM/AM and AM/PM distortion analyses (Option 21) Time-correlated simultaneous views Spectrum display Spectrogram display (frequency versus time versus power) Time domain display (IS-95 standard) Analog demodulation display: time versus modulation factor, phase, or frequency Digital demodulation display (Option 21): constellation, eye diagram, symbol table, or EVM 8.4 inch TFT color display and sturdy cabinet