MS2601B是测试范围覆盖VHF/UHF视频频带的宽带频谱分析仪。使用高精度信号源的合成内部晶振和自动校准，用于高精度频率和电平测试。另外，MS2601B/K具有许多新功能，例如区域标记和滚动功能，可缩短测试时间。而且，插入式存储卡（PMCs）为存储测试条件和波形数据提供了优越的操作性。
技术指标
Model MS2601B
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y Measurement frequency range 9kHz to
Frequency
setting 0 to 2210MHz(stop frequency:≥1kHz)
Display
resolution 20Hz
Setting mode CENTER/SPAN,START/SPAN,START/STOP
Set frequency span(stop frequ.-start freq.)
to 2 digit value(10 to 98)
Frequency
display
accuracy ±(100Hz+freq.span*2%+displayfreq.*reference freq.accuracy)
For CENTER/SPAN or START/SPAN mode,after
auto-calibration,provided that freq.span
is≥10kHz and sweep timeis ≤100s
Frequency
span Setting range:1kHz to 2200MHzfor horizontal 10pisions,2-digit(10 to 98)variable,and 0Hz(fixed tuning)
1kHz to 2000MHz,1-2-5 sequence at step keys
Readout accuracy:±2%(sweep time≤100s)
Resolution Resolution bandwidth:30Hz to1MHz(3dB bandwidth),variable in 1-3 sequence,can be selected manually orautomatically
coupled to frequency span
Resolution bandwidth accuracy:±20%
Selectivity:≤15:1(ratio of 60dB and 3dB bandwidth)
Stability Residual FM:≤20Hz p-p/0.1s(frequencyspan;
≤500kHz)
Drift:≤300Hz/min(frequency span:≤500kHz,
sweep time;≤100s,after 1-hour warm-up at constant ambient temperature)

Sideband
noise ≤-80dBc(at 100Hz resolutionbandwidth,1Hz video bandwidth,10kHz from signal)
A
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e Reference
oscillator Frequency:10Mhz
Stabillity
Starting characteristic:Within±5*10^-8
(after 20-minite warm-up,referred to
frequency after 1-hour warm-uo)
Aging rate:Within±2*10^-8/day,≤1*10^-7/
year (referred to frequency after
24-hour warm-uo)
Temperature characteristic:Within±5*10^-8(referred to frequency at 25℃
External reference input
Frequency:10MHz,Level:2 to 5Vp-p
Mark-
ers NORMAL Function:Displays frequencyat tunable
marker
Display accuracy:Same as center frequency display accuracy
Delta Function:Displays frequencydifference
between reference marker and tunable
marker
Display accuracy:Same as freqeuncy