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SPECTRUMANALYZERS

SPECTRUM ANALYZER

GPIB

MS2661C

9 kHz to 3 GHz

For Analyzing Digital Radio Equipment and CATV Signals

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Specifications

Except where noted otherwise, specified values are obtained after warming up the equipment for 30 minutes at a constant ambient temper-ature and then performing calibration. The typical values are given for reference and are not guaranteed. The MS2661C Portable Spectrum Analyzer is for signal analysis ofradio and other equipment related to improving frequency usage ef- ficiency, higher modulation, and digitalization. The MS2661C is a synthesized spectrum analyzer covering a wide frequency range from 9 kHz to 3 GHz and it has superior basic performance such as high C/N ratio, low distortion, and a high frequency/level accuracies.The MS2661C has a “Measure” function for evaluation of radioequipment (frequency counter, C/N, adjacent channel power, occu- pied frequency bandwidth, burst average power, and template deci- sion function), which enables the two-screen display and FM demod- ulation waveform display. The large selection of options means that a wider range of applications can be handled at a reasonable cost.

Frequency range9 kHz to 3 GHz Display frequency accuracy ±(display frequency x reference frequency accuracy + span x span accuracy + 100 Hz)

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Span: ≥ 10 kHz, after calibration Marker frequency display Normal: Same as display frequency accuracy; Delta: Same as frequency span accuracyaccuracy Frequency counterResolution: 1 Hz, 10 Hz, 100 Hz, 1 kHzAccuracy: Display frequency x reference frequency accuracy ±1 LSD (at S/N: ≥ 20 dB) Setting range: 0 Hz, 1 kHz to 3.1 GHzFrequency spanAccuracy: ±2.5% (span: ≥ 10 kHz), ±5% (span: <10 kHz, with option 02) Setting range:1 kHz, 3 kHz, 10 kHz, 30 kHz, 100 kHz, 300 kHz, 1 MHz, 3 MHz (manually settable, or automatically settable according Resolution bandwidth (RBW) to frequency span)

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Option 02 : 30 Hz, 100 Hz, and 300 Hz are added.(3 dB bandwidth)Measurements of noise, C/N, adjacent channel power and channel power by measure function are executed with thecalculated equivalent noise bandwidth of the RBW.Bandwidth accuracy: ±20% (1 kHz to 1 MHz), ±30% (3 MHz)Selectivity (60 dB : 3 dB):
FrequencyAmplitude ≤ 15:1 Video bandwidth (VBW)1 Hz to 3 MHz (1-3 sequence), OFF (manually settable, or automatically settable according to RBW) Noise sideband: ≤ –100 dBc/Hz (1 GHz, 10 kHz offset)Noise sideband, stabilityResidual FM: ≤ 20 Hzp-p/0.1 s (1 GHz, span: 0 Hz) Frequency drift: ≤ 200 Hz/min (span: ≤ 10 kHz, sweep time: ≤ 100 s)

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After 1-hour warm-up at constant ambient temperature Frequency: 10 MHzReference oscillatorAging rate: 2 x 10
–6 /year (typical); Option 01: 1 x 10
–7 /year, 2 x 10
–8 /day Temperature characteristics: 1 x 10
–5 (typical, 0 to +50°C); Option 01: ±5 x 10
–8 (0 to +50°C)

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Referenced to frequency at 25°C Measurement range: Average noise level to +30 dBmMaximum input level: +30 dBm (CW average power, RF ATT: ≥ 10 dB), ±50 VdcAverage noise level: ≤ –115 dBm (1 MHz to 1 GHz), ≤ –115 dBm + f [GHz] dB (>1 GHz),Level measurement ≤ –114 dBm (1 MHz to 1 GHz, at Option 08 pre-amplifier installed), ≤ –114 dBm + 1.5f [GHz] dB (>1 GHz, at Option 08 pre-amplifier installed)

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RBW: 1 kHz, VBW: 1 Hz, RF ATT: 0 dBResidual response: ≤ –100 dBm (RF ATT: 0 dB, input: 50 Ω termination,1 MHz to 3 GHz) ±1.3 dB (100 kHz to 3 GHz)

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Level measurement accuracy after calibration using internal calibration signalTotal level accuracyTotal level accuracy: Reference level accuracy (0 to –49.9 dBm) + frequency response + log linearity (0 to –20 dB) + calibration signal source accuracy Continued on next page

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