Anritsu / Signal and Spectrum Analyzers

MS2840A

Anritsu MS2840A Spectrum Analyzer/Signal Analyzer, 9 kHz to 3.6/6/26.5/44.5 GHz

Benchtop spectrum and signal analyzer covering 9 kHz to 44.5 GHz with low close-in SSB phase noise and an optional built-in signal generator.

Frequency range: 9 kHz to 3.6 GHz
Frequency range: 9 kHz to 6 GHz
Frequency range: 9 kHz to 26.5 GHz
Frequency range: 9 kHz to 44.5 GHz

Datasheet

Overview

The Anritsu MS2840A is a spectrum analyzer and signal analyzer available in four frequency configurations: 9 kHz to 3.6 GHz (MS2840A-040), 9 kHz to 6 GHz (MS2840A-041), 9 kHz to 26.5 GHz (MS2840A-044) and 9 kHz to 44.5 GHz (MS2840A-046). It is designed for research, development and manufacturing of wireless equipment and transmitter devices, with applications ranging from microwave wireless backhaul to VHF/UHF private mobile radio (PMR).

The instrument is built around close-in SSB phase noise performance, specified at –123 dBc/Hz at 1 GHz with a 10 kHz offset on all frequency models. On the 3.6 GHz and 6 GHz models, the Low Phase Noise Performance option MS2840A-066 further improves phase noise for carriers between 130 MHz and 3.7 GHz at offsets of 1 kHz to 1 MHz, making the analyzer suitable for measuring transmitter carrier close-in spurious.

Measurement functions

The standard spectrum analyzer function includes channel power, occupied bandwidth, adjacent channel leakage power, spectrum emission mask, burst average power, spurious emission, frequency counter and TOI measurements. The standard signal analyzer function provides a 31.25 MHz FFT analysis bandwidth with spectrum, power vs. time, frequency vs. time, phase vs. time, CCDF/APD and spectrogram traces, plus capture and replay of waveform data. The analysis bandwidth can be extended to 62.5 MHz or 125 MHz by option.

Options

Optional functions include phase noise measurement, noise figure measurement using the Y-factor method, precompliance EMI measurement, vector modulation analysis and analog (FM/ΦM/AM) measurement software, BER measurement and noise floor reduction. On the 3.6 GHz and 6 GHz models, a built-in vector signal generator or analog signal generator can be installed, allowing transmitter and receiver tests from a single instrument.

Key Features

Frequency range of 9 kHz to 3.6 GHz, 6 GHz, 26.5 GHz or 44.5 GHz
Built-in preamplifier option up to 44.5 GHz
–123 dBc/Hz SSB phase noise at 1 GHz center frequency, 10 kHz offset, on all frequency models
–138 dBc/Hz (meas.) at 1 GHz, 10 kHz offset with 3.6 GHz and 6 GHz models
–140 dBc/Hz (meas.) at 150 MHz, 10 kHz offset with 3.6 GHz and 6 GHz models
31.25 MHz analysis bandwidth standard, 125 MHz max. by option
Built-in Tx measurements: Channel Power, Occupied Bandwidth, Adjacent Channel Leakage Power, Spectrum Mask, Frequency Counter
Signal analyzer traces: Frequency vs. Time, Power vs. Time, Phase vs. Time, Spectrogram, CCDF up to 44.5 GHz
Vector modulation analysis and analog FM/ΦM/AM measurements
Built-in signal generator option for all-in-one TRx and BER tests on 3.6 GHz and 6 GHz models
Phase Noise Measurement Function option
Noise Figure Measurement Function option up to 44.5 GHz
Pulse Radar Measurement Function option
Capture & replay of waveform data to internal memory
Power meter function with compatible USB power sensors
Noise Floor Reduction option subtracting internal noise (11 dB max. nominal)

Specifications

Frequency

Frequency range MS2840A-040	9 kHz to 3.6 GHz
Frequency range MS2840A-041	9 kHz to 6 GHz
Frequency range MS2840A-044	9 kHz to 26.5 GHz
Frequency range MS2840A-046	9 kHz to 44.5 GHz
Frequency setting range MS2840A-040	–100 MHz to 3.7 GHz Resolution 1 Hz
Frequency setting range MS2840A-041	–100 MHz to 6.1 GHz Resolution 1 Hz
Frequency setting range MS2840A-044	–100 MHz to 27 GHz Resolution 1 Hz
Frequency setting range MS2840A-046	–100 MHz to 45 GHz Resolution 1 Hz
Reference oscillator aging rate MS2840A-040, MS2840A-041	±1 × 10–6 /year Standard, without MS2840A-001/002
Reference oscillator temperature characteristics MS2840A-040, MS2840A-041	±2.5 × 10–6 (0°C to 50°C) Standard, without MS2840A-001/002
Reference oscillator aging rate MS2840A-002, MS2840A-044, MS2840A-046	±1 × 10–7 /year MS2840A-002 is standard on MS2840A-044/046
Reference oscillator aging rate MS2840A-001	±1 × 10–10 /month, ±1 × 10–9 /year Rubidium reference oscillator

SSB Phase Noise

SSB phase noise, 10 Hz offset	–80 dBc/Hz (nom.) 18º to 28°C, 1000 MHz, Spectrum Analyzer mode; without MS2840A-001 and with MS2840A-002
SSB phase noise, 100 Hz offset	–92 dBc/Hz (nom.) 18º to 28°C, 1000 MHz; without MS2840A-001 and with MS2840A-002
SSB phase noise, 1 kHz offset	–117 dBc/Hz (nom.) 18º to 28°C, 1000 MHz; without MS2840A-001 and with MS2840A-002
SSB phase noise, 10 kHz offset	–123 dBc/Hz 18º to 28°C, 1000 MHz, Spectrum Analyzer mode
SSB phase noise, 100 kHz offset	–123 dBc/Hz 18º to 28°C, 1000 MHz, Spectrum Analyzer mode
SSB phase noise, 1 MHz offset	–135 dBc/Hz 18º to 28°C, 1000 MHz, Spectrum Analyzer mode
SSB phase noise, 10 MHz offset	–148 dBc/Hz (nom.) 18º to 28°C, 1000 MHz, Spectrum Analyzer mode
SSB phase noise with MS2840A-066, 1 kHz offset MS2840A-066	–122 dBc/Hz MS2840A-066 enabled, center frequency 500 MHz, SPAN ≤ 1 MHz, 18°C to 28°C
SSB phase noise with MS2840A-066, 10 kHz offset MS2840A-066	–133 dBc/Hz MS2840A-066 enabled, center frequency 500 MHz, SPAN ≤ 1 MHz, 18°C to 28°C
SSB phase noise with MS2840A-066, 100 kHz offset MS2840A-066	–133 dBc/Hz MS2840A-066 enabled, center frequency 500 MHz, SPAN ≤ 1 MHz, 18°C to 28°C
SSB phase noise with MS2840A-066, 10 kHz offset at 1 GHz MS2840A-066	–138 dBc/Hz (meas.) Measured at design, not guaranteed; measured by Phase Noise Measurement function
SSB phase noise with MS2840A-066, 10 kHz offset at 150 MHz MS2840A-066	–140 dBc/Hz (meas.) Measured at design, not guaranteed; measured by Phase Noise Measurement function

Amplitude

Level measurement range	DANL to +30 dBm Without MS2840A-008/068/069 or Preamp OFF
Level measurement range MS2840A-008, MS2840A-068, MS2840A-069	DANL to +10 dBm With MS2840A-008/068/069 and Preamp ON
Maximum input level (average total power)	+30 dBm Input attenuator: ≥10 dB; +20 dBm at 0 dB attenuation; preamp off
Maximum DC voltage MS2840A-040, MS2840A-041	±10 Vdc
Maximum DC voltage MS2840A-044, MS2840A-046	±0 Vdc
Input attenuator range	0 to 60 dB, 2 dB Steps MS2840A-046 without MS2840A-019 uses 10 dB steps in some attenuator/band modes
Input attenuator switching uncertainty	±0.20 dB (10 to 60 dB) 300 kHz ≤ frequency < 4 GHz, Frequency Band Mode: Normal; referenced to 10 dB, 18°C to 28°C
Reference level setting range (log scale)	–130 to +50 dBm Spectrum Analyzer function; –120 to +50 dBm for Signal Analyzer function
Linearity error	±0.07 dB Mixer input level ≤–20 dBm, preamp off; ±0.10 dB at mixer input level ≤–10 dBm
RF frequency characteristics	±0.35 dB 300 kHz ≤ frequency < 50 MHz, 18°C to 28°C, input attenuator 10 dB, preamp off
RF frequency characteristics MS2840A-044, MS2840A-046	±2.50 dB 13.8 GHz < frequency ≤ 40 GHz, preamp off
1 dB gain compression	≥+3 dBm At mixer input level, 300 MHz ≤ frequency ≤ 4 GHz, preamp off
Second harmonic distortion	≤–65 dBc 300 MHz < input frequency ≤ 1 GHz, mixer input level –30 dBm, preamp off; SHI ≥+35 dBm
Residual responses	≤–100 dBm 1 MHz ≤ frequency ≤ 1 GHz, input attenuator 0 dB, 50Ω terminated
Residual responses MS2840A-046	≤–80 dBm (nom.) 26.5 GHz < frequency ≤ 44.5 GHz
Average display noise level	-164 dBm/Hz (1 GHz, preamp ON) Brochure table lists –165 dBm/Hz at 1 GHz with preamp on for the 3.6/6 GHz models
TOI	+16 dBm(1 GHz)

Displayed Average Noise Level (3.6 GHz/6 GHz models)

DANL, 30 MHz, preamp none MS2840A-040, MS2840A-041	–153 dBm/Hz Spectrum Analyzer function, without Low Phase Noise Performance
DANL, 1 GHz, preamp none MS2840A-040, MS2840A-041	–151 dBm/Hz Spectrum Analyzer function
DANL, 6 GHz, preamp none MS2840A-041	–146 dBm/Hz Spectrum Analyzer function
DANL, 30 MHz, preamp on MS2840A-008	–166 dBm/Hz Spectrum Analyzer function
DANL, 1 GHz, preamp on MS2840A-008	–165 dBm/Hz Spectrum Analyzer function
DANL, 6 GHz, preamp on MS2840A-008	–161 dBm/Hz Spectrum Analyzer function
Third order intercept (TOI), 1 GHz MS2840A-040, MS2840A-041	+16 dBm Preamp none; dynamic range 167 dB

Spectrum Analyzer

Span MS2840A-040	0 Hz, 300 Hz to 3.6 GHz
Span MS2840A-041	0 Hz, 300 Hz to 6 GHz
Span MS2840A-044	0 Hz, 300 Hz to 26.5 GHz
Span MS2840A-046	0 Hz, 300 Hz to 44.5 GHz
Span accuracy	±0.2% Trace Point 10,001; resolution 2 Hz
Resolution bandwidth (RBW)	1 Hz to 3 MHz (1-3 sequence), 500 Hz, 50 kHz, 2 MHz, 5 MHz, 10 MHz, 20 MHz, 31.25 MHz 1 Hz to 10 Hz cannot be set when Span 0 Hz; 31.25 MHz only when Span 0 Hz
RBW selectivity (–60 dB/–3 dB)	4.5: 1 Nominal, 1 Hz to 10 MHz
Video bandwidth (VBW)	1 Hz to 10 MHz (1-3 sequence), 5 kHz, Off VBW mode: Video Average/Power Average

Signal Analyzer

Analysis bandwidth	31.25 MHz Standard; 50 MHz max. sampling rate, ADC resolution 16 bits
Analysis bandwidth MS2840A-077	62.5 MHz 100 MHz max. sampling rate, ADC resolution 14 bits
Analysis bandwidth MS2840A-077, MS2840A-078	125 MHz 200 MHz max. sampling rate, ADC resolution 14 bits; image response received above 31.25 MHz bandwidth
Max. capture time	0.5 s to 2000 s Depends on span
Max. number of samples	100 Msamples

Signal Generator Options (3.6 GHz/6 GHz models)

Vector signal generator frequency range MS2840A-020	250 kHz to 3.6 GHz
Vector signal generator frequency range MS2840A-021	250 kHz to 6 GHz
Vector signal generator output level MS2840A-020, MS2840A-021	–40 to +20 dBm (>25 MHz) Standard; –136 to +15 dBm (>25 MHz) with MS2840A-022 installed
Vector modulation bandwidth MS2840A-020, MS2840A-021	120 MHz
Waveform memory MS2840A-020, MS2840A-021	64 Msamples (Standard), 256 Msamples (with MS2840A-027 installed)
Analog signal generator frequency setting range MS2840A-088	100 kHz to 3 GHz Output modulation FM, ΦM, AM

Measurement Function Options

Phase noise measurement offset range MS2840A-010	10 Hz to 10 MHz
Noise figure measurement frequency range (noise source) MS2840A-017	0.01 GHz to 40.0 GHz Y-factor method; Noisecom NC346 series noise sources supported
BER input bit rate MS2840A-026	100 bps to 10 Mbps Input level TTL 3.3 V, rear panel AUX connector
Preamplifier frequency range MS2840A-008, MS2840A-040	100 kHz to 3.6 GHz Gain of about 20 dB
Preamplifier frequency range MS2840A-008, MS2840A-041	100 kHz to 6 GHz Gain of about 20 dB
Precompliance EMI RBW MS2840A-016	200 Hz (6 dB), 9 kHz (6 dB), 120 kHz (6 dB), 1 MHz (Imp) Detectors: Quasi-Peak, CISPR-AVG, RMS-AVG

Specifications are taken from the manufacturer's documentation. See the datasheet for complete and current values.

Applications

Research and development of wireless equipment
Manufacturing test of wireless transmitters
Microwave wireless backhaul
VHF/UHF private mobile radio (PMR)
Transmitter close-in spurious measurement
Phase noise characterization of local oscillators
Noise figure measurement
Receiver sensitivity and BER testing
Precompliance EMI measurement
Radar transmitter measurement

Options & Accessories

Option	Description
MS2840A-040	3.6 GHz model — 9 kHz to 3.6 GHz
MS2840A-041	6 GHz model — 9 kHz to 6 GHz
MS2840A-044	26.5 GHz model — 9 kHz to 26.5 GHz
MS2840A-046	44.5 GHz model — 9 kHz to 44.5 GHz
MS2840A-001	Rubidium Reference Oscillator — 10 MHz reference with ±1 × 10–9 start-up characteristics 7 minutes after power-on
MS2840A-002	High Stability Reference Oscillator — 10 MHz reference crystal oscillator, aging rate ±1 × 10–7 /year
MS2840A-005	Analysis Bandwidth Extension to 31.25 MHz
MS2840A-006	Analysis Bandwidth 10 MHz
MS2840A-008	Preamplifier — Gain of about 20 dB to improve DANL for low-level signal measurement
MS2840A-009	Analysis Bandwidth Extension to 31.25 MHz
MS2840A-010	Phase Noise Measurement Function — Phase noise measurement with a frequency offset range of 10 Hz to 10 MHz
MS2840A-011	Secondary SSD — Removable SSD for storing user data, no OS installed
MS2840A-014	Removable SSD, Win10 — User-changeable SSD with the same Windows OS and programs as the factory system SSD
MS2840A-016	Precompliance EMI Function — Adds CISPR detection modes and RBWs to the spectrum analyzer function
MS2840A-017	Noise Figure Measurement Function — Y-factor noise figure measurement using a noise source
MS2840A-019	2 dB Step Attenuator for Millimeter-wave
MS2840A-020	Vector Signal Generator, 3.6 GHz — 250 kHz to 3.6 GHz
MS2840A-021	Vector Signal Generator, 6 GHz — 250 kHz to 6 GHz
MS2840A-022	Low Power Extension for Vector Signal Generator — Extends the output level lower limit from –40 dBm to –136 dBm; upper limit drops by 5 dB
MS2840A-026	BER Measurement Function — BER measurement up to 10 Mbps
MS2840A-027	ARB Memory Upgrade 256 MSa for Vector Signal Generator — Extends ARB memory from 64 Msamples to 256 Msamples
MS2840A-028	AWGN — Adds Additive White Gaussian Noise to the output signal
MS2840A-029	Analog Function Extension for Vector Signal Generator — Adds an analog signal generator function to MS2840A-020/021
MS2840A-051	Noise Floor Reduction — Subtracts internal noise components (11 dB max. nominal) from the displayed result
MS2840A-066	Low Phase Noise Performance — Improves SSB phase noise for signals from 130 MHz to 3.7 GHz at offsets of 1 kHz to 1 MHz
MS2840A-067	Microwave Preselector Bypass
MS2840A-068	Microwave Preamplifier
MS2840A-069	26.5 GHz Microwave Preamplifier
MS2840A-077	Analysis Bandwidth Extension to 62.5 MHz — Extends analysis bandwidth to 62.5 MHz
MS2840A-078	Analysis Bandwidth Extension to 125 MHz — Extends analysis bandwidth to 125 MHz; requires MS2840A-077
MS2840A-088	3.6 GHz Analog Signal Generator — FM, ΦM and AM signal output, 100 kHz to 3 GHz
MS2840A-189	Vector Function Extension for Analog Signal Generator — Adds a vector signal generator function to MS2840A-088
MX269017A	Vector Modulation Analysis Software — Measures modulation accuracy, carrier frequency and Tx power for digital radios
MX269017A-001	APSK Analysis — 16APSK, 32APSK
MX269017A-011	Higher-Order QAM Analysis — 512QAM, 1024QAM, 2048QAM
MX269018A	Analog Measurement Software — Tx performance measurement of AM, FM and ΦM analog radios
MX269902A	TDMA IQproducer — PC software for generating TDMA waveform patterns
MX269904A	Multi-Carrier IQproducer — PC software for generating multichannel waveform patterns
MX284090A	External Mixer Connection Function

Documents & Resources

Signal Analyzer MS2840A-040/041 (3.6 GHz/6.0 GHz model)

brochure · PDF

Measurement Software MX2690xxA / MX2830xxA / MX2840xxA / MX2850xxA series

brochure

Signal Analyzer MS2840A-044/046 (26.5 GHz/44.5 GHz model)

brochure · PDF

MX269xxxA series Software - Waveform Pattern MX2690xxA / IQproducer MX2699xxA