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The RSA3308B is a portable Real-time Spectrum Analyzer (RSA) meant for lab or production line use with a frequency range of DC to 8 GHz is capable of capturing continuous, intermittent, or random signals. With Digital phosphor spectrum processing (DPX) this RSA provides the user the ability to view time-varying RF signals with color-graded displays based on frequency. For offline spectral analysis users can install the RSAVu Real-Time Spectrum Analyzer Software on their PC and offload .iqt and .tiq waveform data files to it.

The RSA’s has a 8.4 inch TFT color display, a 20 GB hard drive, and a diskette drive (either a 3.5-inch 2HD (1.44 MB) or 2DD (720 KB)) to save and load data and settings.

This RSA is capable of performing spectrum analysis of power, ACPR, C/N, OBW, EBW, and spurious signals. Analog modulation analysis is possible with AM, PM, FM, ASK, and FSK signals. Additionally, this RSA can perform digital modulation analysis from BPSK to 256QAM (with option 21 of the RSAVu software), time characteristics analysis including pulse measurements, constellation analysis, EVM analysis, AM/AM and AM/PM distortion analysis, RFID analysis, signal source analysis, and CCDF analysis.

Front panel inputs/outputs are: RF IN N connector (50Ω, +30 dBm max); PreAmp Pwr LEMO S-series connector (Preamp power connector).

Rear panel inputs/outputs: REF OUT/IN BNC connectors (50Ω); I+/I- INPUT BNC connectors (50Ω, when using one connector as a single-ended input terminate the other end in 50Ω, Opt. 03 only); Q+/Q- INPUT BNC connectors (50Ω, when using one connector as a single-ended input terminate the other end in 50Ω, Opt. 03 only); TRIG OUT/IN BNC connectors (50Ω); GPIB connector (IEEE 488.2); and US Power Plug (115 V nominal).

Side panel inputs/outputs: LAN Ethernet connector (10/100BASE-T), VGA Connector, and 2 X USB connectors (USB 1.1).


Frequency Range DC to 8 GHz
Max Capture BW 15 MHz
RF Input impedance 50 Ω
Maximum Safe RF Input Power +30 dBm ±0.2 V (RF Band) ±5 V (Baseband) ±5 V (IQ input), RF Attn ≥10 dB
Input RF/Baseband Attenuator 0 dB to 50 dB (2 dB step at <3.5 GHz, 10 dB step at ≥3.5 GHz)
Input IQ Input Attenuator 0 dB to 30 dB (10 dB step)
Dynamic Range (Spurious Free) -70 dBc/15 MHz
Reference Level Range -50 dBm to +30 dBm (1 dB step) (RF); -30 dBm to +20 dBm (5 dB step) (Baseband); -10 dBm to +20 dBm (5 dB step) (IQ Inputs)
Resolution Bandwidth per Span (1 Hz to 10 MHz) Span > 2 GHz: 100 kHz min; to Span 100 Hz: 1 Hz min
IQ Inputs (Opt 03) 20 MHz BW Differential
Minimum Signal Duration for 100% POI ≤41 µsec
Trigger Types Level, Free run, External, and Freq. Mask Trigger (Opt. 02)
Ext Trigger Threshold Levels -1.5 to +1.5 V settable
Displayed Average Noise at 1 GHz (Preamp off) −150 dBm/Hz
Phase Noise at offsets from 1 GHz (dBc/Hz) 10 kHz: -108, 1 MHz: -133, 10 MHz: -136
Included Accessories User Manual, Programmer’s Manual (on CD), Power cord, BNC to N Adapter, USB keyboard, USB mouse, and Front Cover
Weight (all options) 20 kg (44 lbs)
Power & Dissipation (fully loaded) 90 - 250 V, 47 to 63 Hz, 350 W max; the principal power switch in at the lower left corner of the rear panel, while the front panel power switch allows ON or STANDBY modes
Operating Atmospherics Temperatures: +10 °C to +40 °C; Humidity: 20% to 80% (no condensation); Altitude: Up to 3000 m (9842 ft)

Options (specific to RSA – Not RSAVu software)

  • Opt. 02: 65.5 MSample Deep Memory, Frequency Mask Trigger
  • Opt. 03: IQ, Differential IQ inputs
  • Opt. 28: TD-SCDMA Analysis

Service Options

  • Opt. CA1: Single Calibration or Functional Verification
  • Opt. C3: Calibration Service 3 Years
  • Opt. C5: Calibration Service 5 Years
  • Opt. D1: Calibration Data Report
  • Opt. D3: Calibration Data Report 3 Years (with Opt. C3)
  • Opt. D5: Calibration Data Report 5 Years (with Opt. C5)
  • Opt. G3: Complete Care 3 Years (includes loaner, scheduled calibration, and more)
  • Opt. G5: Complete Care 5 Years (includes loaner, scheduled calibration, and more)
  • Opt. R5: Repair Service 5 Years (including warranty)