The MS2601B/K is a wide-band spectrum analyzer which covers the video to VHF/UHF bands. The synthesized local oscillator and automatic calibration, which uses a highly accurate signal source, enable accurate frequency and level measurement. In addition, the MS2601B/K has new and original functions such as the zone marker and scroll function, that shorten measurement time. Furthermore, plug-in memory cards (PMCs) for storing measurement conditions and waveform data offer excellent operability.