The Anritsu MS2601A is a legacy, high-performance synthesized spectrum analyzer covering the 9 kHz to 2.2 GHz frequency range. Highly accurate and reliable, it is designed for precise RF spectral analysis, offering a wide dynamic range, excellent resolution bandwidth flexibility, and automated measurement functions such as occupied bandwidth and adjacent channel power calculations.

Specifications

General

ParameterValue
InterfacesGP-IB (IEEE-488)
Display5.5-inch green monochrome CRT

Physical

ParameterValue
Power Supply100 to 120 V AC / 200 to 240 V AC (selectable), 50/60 Hz, <= 130 VA
Operating Temperature0 to 50 °C
Dimensions (W×H×D)320 mm x 177 mm x 450 mm
Weight16 kg

Frequency Specifications

ParameterValue
Frequency Range9 kHz - 2.2 GHz
Frequency Tuning Resolution1 Hz
Frequency Span Range0 Hz (zero span), 10 kHz - 2.2 GHz
Frequency Reference Accuracy±2 ppm
Frequency Reference Aging Rate±2 x 10^-8 per day, ±2 x 10^-6 per year
Temperature Stability±5 x 10^-6 (0 to 50 °C)
Phase Noise≤ -90 dBc/Hz (at 10 kHz offset, 1 GHz carrier)
Residual FM≤ 20 Hz p-p (in 100 ms, span ≤ 2 MHz)

Resolution and Video Bandwidths

ParameterValue
Resolution Bandwidth (RBW) Range30 Hz - 1 MHz
Resolution Bandwidth (RBW) Steps1, 3 sequence (30 Hz, 100 Hz, 300 Hz, 1 kHz, 3 kHz, 10 kHz, 30 kHz, 100 kHz, 300 kHz, 1 MHz)
Resolution Bandwidth (RBW) Accuracy±15% (100 Hz - 1 MHz), ±30% (30 Hz)
Selectivity (Shape Factor)≤ 15:1 (30 Hz - 100 Hz), ≤ 12:1 (300 Hz - 1 MHz) @ -60 dB to -3 dB ratio
Video Bandwidth (VBW) Range1 Hz - 100 kHz
Video Bandwidth (VBW) Steps1, 10 sequence (1 Hz, 10 Hz, 100 Hz, 1 kHz, 10 kHz, 100 kHz)

Amplitude and Dynamic Range

ParameterValue
Amplitude Measurement Range-120 dBm to +30 dBm
Maximum Safe RF Input Level+30 dBm (with ≥ 10 dB input attenuation)
Displayed Average Noise Level (DANL)≤ -120 dBm (1 MHz - 2.2 GHz, 30 Hz RBW, VBW 1 Hz, 0 dB attenuation)
Gain Compression (1 dB)≥ -5 dBm (at mixer, ≥ 10 MHz)
Second Harmonic Distortion≤ -75 dBc (-30 dBm input at mixer, ≥ 10 MHz)
Third-Order Intermodulation (TOI)≤ -75 dBc (-30 dBm input at mixer, ≥ 10 MHz, 100 kHz separation)
Display Scale Range10, 5, 2, 1 dB/div, Linear (10% of reference level/div)
Input Attenuator Range0 to 70 dB
Input Attenuator Steps10 dB

Measurement Accuracy

ParameterValue
Frequency Response (Flatness)±0.5 dB (100 kHz - 1.5 GHz), ±1.0 dB (9 kHz - 2.2 GHz)
Calibration Signal Output Level-20 dBm
Calibration Signal Output Frequency100 MHz

Sweep and Triggering

ParameterValue
Sweep Time Range50 ms - 1000 s
Sweep ModesContinuous, Single, Manual
Trigger TypesFree Run, Line, Video, External

Inputs and Outputs

ParameterValue
RF Input Connector TypeN-type (female)
RF Input Impedance50 Ω
External Reference Input Frequency10 MHz
Internal Reference Output Frequency10 MHz

Instrument Functions and Software

ParameterValue
Marker FunctionsPeak Search, Next Peak, Marker to Center, Marker to Ref Level, Delta Marker
Number of Traces2 (A, B)
Occupied Bandwidth (OBW) MeasurementSupported
Adjacent Channel Power (ACP) MeasurementSupported

Internal Memory

ParameterValue
Save/Recall Capacity (Internal)10 panel setups, 10 waveforms

Options & Accessories

ParameterValue
Option 01 Tracking Generator Frequency Range100 kHz to 2.2 GHz
Option 02 PTA Programming LanguagePTA BASIC
Option 04 QP Detector Bandwidths (6 dB)200 Hz, 9 kHz, 120 kHz
Option 04 QP Detector Standard ComplianceCISPR Pub. 16

Technology

RF Spectrum Analyzer

Applications

Spectral measurements, RF transmitter testing, and general-purpose laboratory analysis