●Small and weighing only 11 kg
The MS2651B/2661B are compact and lightweight, measur-
ing 320 (W) ×177 (H) ×351 (D) mm and weighing only 11
kg. In addition to benchtop use, they can be carried easily
for field use, making them the ideal choice for manufactur-
ing and maintenance of radio equipment.
●Synthesized local oscillator
The synthesized local oscillator design permits stable mea-
surement without disturbance due to frequency drift of the
spectrum analyzer itself. The level stabilizes in 30 minutes
after power-on, making these units especially suitable for
on-site maintenance and adjustment where work must be
completed quickly.
●Counter with 1 Hz resolution
A full complement of frequency counter functions are pro-
vided. Resolution is a high ±1 Hz even at full span, and
high-speed frequency measurements can be performed.
The high sensitivity compared with ordinary counters makes
it easy to select one signal from many and to determine its
frequency.
Compact, Lightweight, and Powerful
●Superior distortion characteristics
The MS2661B boasts extremely low harmonic distortion
levels, including a second harmonic distortion of –75 dBc*1
and a two-signal third order intermodulation distortion of
–80 dBc*2making it suitable for measuring harmonic com-
ponents and for evaluating the non-linearity of high-power
amplifiers.
*1200 MHz to 1.5 GHz, mixer input: –30 dBm
*2100 MHz to 3 GHz, frequency difference between signals:
≥50 kHz, mixer input: –30 dBm
●100 dB display dynamic range
In measurements requiring a wide dynamic range
such as adjacent channel power measurements, the
MS2651B/2661B can display more than 80 dB on a single
screen.
●Highly-accurate measurement
Auto-calibration ensures an overall level accuracy of within
±1.3 dB.
A span accuracy of 2.5% and 501 sampling points ensure
accurate occupied frequency bandwidth and adjacent chan-
nel power measurements.
●High C/N ratio
Excellent noise sideband characteristics are required for
analysis of weak signals adjacent to strong signals. The
MS2661B has low noise sidebands of below –100 dBc/Hz
(10 kHz offset), making it suitable for measurement of adja-
cent channel power of both analog and digital radio commu-
nication equipment.
Frequency measurement (1 Hz resolution)
Noise sidebands measurement (10 kHz offset)
Two-signal third order intermodulation
Occupied bandwidth measurement
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