The Anritsu MS2840A is a high-performance spectrum analyzer and signal analyzer built for precise RF and microwave measurements across R&D, manufacturing, and field-test environments. Four models cover 9 kHz to 3.6 GHz, 6 GHz, 26.5 GHz, and 44.5 GHz respectively, with external mixer support for extended range. The instrument delivers close-in phase noise—reaching –140 dBc/Hz at 150 MHz and 10 kHz offset—and excellent dynamic range with displayed average noise levels better than –160 dBm/Hz (30 MHz to 6 GHz with preamplifier). Amplitude measurement spans +30 dBm to –166 dBm with ±0.35 dB error to 4 GHz.
## Technical Specifications
• **Frequency Range:** 9 kHz to 3.6 GHz (MS2840A-040), 6 GHz (MS2840A-041), 26.5 GHz (MS2840A-044), 44.5 GHz (MS2840A-046); expandable with external mixers
• **Amplitude Range:** +30 dBm to –166 dBm
• **Amplitude Error:** ±0.35 dB (up to 4 GHz)
• **Resolution Bandwidth:** 1 Hz to 10 MHz
• **Analysis Bandwidth:** Standard 31.25 MHz; optional 62.5 MHz or 125 MHz maximum
• **DANL (Preamp ON):** Better than –160 dBm/Hz (30 MHz to 6 GHz)
• **Third Order Intercept (TOI):** +15 dBm nominal
• **Phase Noise Performance:**
– –140 dBc/Hz @ 150 MHz center frequency, 10 kHz offset (MS2840A-040/041)
– –138 dBc/Hz @ 1 GHz, 10 kHz offset (measured, 3.6/6 GHz models)
– –112 dBc/Hz @ 20 GHz, 10 kHz offset (measured)
– –108 dBc/Hz @ 40 GHz, 10 kHz offset (measured)
## Key Features
• Built-in 31.25 MHz FFT for multi-domain analysis and transient capture
• Signal analysis functions: power vs. time, frequency vs. time, phase vs. time, CCDF/APD, spectrogram
• MS2840A-066 Low Phase Noise Performance option enhances SSB phase noise for RF inputs 130 MHz to 3.7 GHz, 1 kHz to 1 MHz offsets
• Optional real-time signal analysis and vector modulation analysis
• Preamplifier option for improved sensitivity
## Typical Applications
• Microwave component production and characterization
• Wireless backbone network testing
• Mobile radio communication systems validation
• Narrowband RF signal measurement and analysis
