The Tektronix RSA3308A is a high-performance Real-Time Spectrum Analyzer (RTSA) designed for the seamless capture and analysis of time-varying, transient, or periodic RF signals. Operating over a wide frequency range from DC up to 8 GHz with a real-time bandwidth of 15 MHz, it features Tektronix's proprietary Frequency Mask Trigger (FMT) and up to 256 MB of internal acquisition memory. This instrument provides simultaneous, time-correlated views in frequency, time, and modulation domains, making it ideal for vector signal analysis, digital demodulation, and troubleshooting embedded RF designs.
Specifications
General
| Parameter | Value |
|---|---|
| Interfaces | GPIB (IEEE-488.2), LAN (10/100 Base-T), USB, VGA, PS/2 Keyboard/Mouse |
| Display | 8.4-inch active-matrix color TFT LCD, 640 × 480 pixels |
Physical
| Parameter | Value |
|---|---|
| Power Supply | 90 V to 250 V AC, 47 Hz to 63 Hz, 350 VA maximum |
| Operating Temperature | 10 °C to 40 °C |
| Dimensions (W×H×D) | 425 mm × 215 mm × 512 mm |
| Weight | 19 kg |
Frequency Specifications
| Parameter | Value |
|---|---|
| Baseband Frequency Range | DC to 20 MHz |
| RF Frequency Range | 15 MHz to 8 GHz |
| Overall Frequency Range | DC to 8 GHz |
| Center Frequency Tuning Resolution | 0.1 Hz |
| Frequency Reference Aging per Year | ±1 × 10^-6 (Standard), ±1 × 10^-7 (Option 1D) |
| Frequency Reference Aging per Day | ±1 × 10^-9 (Standard), ±2 × 10^-10 (Option 1D) |
| Frequency Reference Temperature Drift | ±2 × 10^-6 (10 °C to 40 °C, Standard), ±1 × 10^-8 (Option 1D) |
| Span Range (Spectrum Analyzer Mode) | 10 Hz to 8 GHz, 0 Hz (zero span) |
| Span Range (Real-Time Mode) | 100 Hz to 15 MHz |
| Span Accuracy | ±1% |
| Resolution Bandwidth (RBW) Range (SA Mode) | 1 Hz to 10 MHz |
| RBW Shape Factor (Gaussian Filter) | < 4.1:1 (typical) |
Real-Time Spectrum Analysis (RTSA) Capabilities
| Parameter | Value |
|---|---|
| Real-Time Bandwidth (RTBW) | 15 MHz |
| Spectrum Processing Rate | Up to 48,000 spectrums per second |
| Frequency Mask Trigger (FMT) Frequency Resolution | 1 bin (based on 1024-point FFT) |
| Multi-Domain Analysis | Simultaneous, time-correlated views in frequency, time, and modulation domains |
Amplitude and Dynamic Range
| Parameter | Value |
|---|---|
| Measurement Range | DANL to +30 dBm |
| Maximum Safe Input Level (RF Input) | +30 dBm (RF Attenuation ≥ 10 dB, 0 V DC) |
| 1 dB Compression Point | -15 dBm (0 dB RF Attenuation) |
| Displayed Average Noise Level (DANL) at 1 GHz | -150 dBm/Hz (-152 dBm/Hz typical) |
| Displayed Average Noise Level (DANL) at 3 GHz | -150 dBm/Hz (-152 dBm/Hz typical) |
| Displayed Average Noise Level (DANL) at 8 GHz | -142 dBm/Hz (-144 dBm/Hz typical) |
| Displayed Average Noise Level (DANL) at Baseband | -145 dBm/Hz (-147 dBm/Hz typical) |
| Third-Order Intermodulation Distortion (TOI) | +15 dBm (typical at 2 GHz, 0 dB RF attenuation) |
| Second Harmonic Distortion | -70 dBc (typical, 10 MHz to 1.5 GHz carrier) |
| Phase Noise at 10 kHz Offset (1 GHz carrier) | -100 dBc/Hz (-105 dBc/Hz typical) |
| Phase Noise at 100 kHz Offset (1 GHz carrier) | -105 dBc/Hz (-110 dBc/Hz typical) |
| Phase Noise at 1 MHz Offset (1 GHz carrier) | -125 dBc/Hz (-132 dBc/Hz typical) |
| Overall Amplitude Accuracy (RF) | ±1.2 dB (15 MHz to 3 GHz, 20 °C to 30 °C) |
| Amplitude Flatness (Baseband) | ±0.5 dB (DC to 20 MHz) |
| Amplitude Flatness (RF, 15 MHz to 3 GHz) | ±1.2 dB (RF Attenuation ≥ 10 dB) |
| Amplitude Flatness (RF, 3 GHz to 8 GHz) | ±1.7 dB (RF Attenuation ≥ 10 dB) |
Triggering and Gating
| Parameter | Value |
|---|---|
| Trigger Modes | Free Run, Triggered |
| Trigger Source | RF Input, External Trigger, Line |
| Trigger Position Range | 0% to 100% of acquisition length |
| Frequency Mask Trigger Bandwidth | Up to 15 MHz |
| Internal Level Trigger Range | 0 to -100 dBfs |
Acquisition and Memory
| Parameter | Value |
|---|---|
| ADC Resolution | 14 bits |
| Real-Time Sampling Rate | 51.2 MS/s (Baseband / IQ) |
| Standard IQ Memory Depth (Samples) | 16.384 Msamples (64 MB) |
| Option 02 IQ Memory Depth (Samples) | 65.536 Msamples (256 MB) |
| Acquisition Modes | Real-time, Sweep, Time-domain, Triggered |
Measurement and Analysis Functions
| Parameter | Value |
|---|---|
| Standard Measurements | Channel Power, ACPR, OBW, Carrier-to-Noise (C/N), Spurious emission, SEM, dBm/Hz |
| Analog Demodulation Formats | AM, FM, PM |
| Digital Modulation Analysis Formats (Option 21) | BPSK, QPSK, OQPSK, π/4-DQPSK, 8PSK, 16QAM, 32QAM, 64QAM, 128QAM, 256QAM, GMSK, GFSK, ASK, FSK, MSK |
| Spectrogram Analysis Capability | Time-resolved frequency and amplitude display |
Inputs and Outputs
| Parameter | Value |
|---|---|
| RF Input Connector Type | Type N (female) |
| RF Input Impedance | 50 ohms |
| RF Input VSWR (15 MHz to 3 GHz) | < 1.4:1 (with 10 dB RF attenuation) |
| RF Input VSWR (3 GHz to 8 GHz) | < 1.8:1 (with 10 dB RF attenuation) |
| 10 MHz Reference Input | BNC (female), 50 ohms, -10 dBm to +6 dBm |
| 10 MHz Reference Output | BNC (female), 50 ohms, > -3 dBm |
| Trigger Output | BNC (female), TTL level |
| Analog IF Output (Option 03) | BNC (female), 50 MHz |
System, Display and Storage
| Parameter | Value |
|---|---|
| Operating System | Windows XP Professional Embedded |
| Internal Storage Type | 2.5-inch IDE Hard Disk Drive |
| Floppy Disk Drive | 3.5-inch, 1.44 MB |
| Warm-up Time | 20 minutes (typical) |
Power, Physical and Environmental
| Parameter | Value |
|---|---|
| Storage Temperature Range | -20 °C to 60 °C |
| Relative Humidity (Operating) | 20% to 80% RH (non-condensing) |
| Operating Altitude | Up to 3,000 meters (10,000 feet) |
| Storage Altitude | Up to 12,190 meters (40,000 feet) |
RF Input & Attenuation
| Parameter | Value |
|---|---|
| RF Input Attenuation Range | 0 to 50 dB (10 dB steps) |
| Reference Level Setting Range (RF) | -50 dBm to +30 dBm (1 dB steps) |
| Reference Level Setting Range (Baseband) | -30 dBm to +20 dBm (1 dB steps) |
Dynamic Range & Distortion
| Parameter | Value |
|---|---|
| Residual Spurious Response (Baseband) | -100 dBm (typical, RF Attenuation 0 dB) |
| Residual Spurious Response (RF, 15 MHz to 3 GHz) | -90 dBm (typical, RF Attenuation 0 dB) |
| Residual Spurious Response (RF, 3 GHz to 8 GHz) | -85 dBm (typical, RF Attenuation 0 dB) |
| Image Response | -70 dBc (typical, Span 10 MHz) |
Trigger Specifications
| Parameter | Value |
|---|---|
| External Trigger Input Impedance | 10 kΩ (approximately) |
| External Trigger Input Level Range | -5 V to +5 V |
Digital Modulation Analysis (Option 21)
| Parameter | Value |
|---|---|
| Digital Modulation Symbol Rate Range | 10 kS/s to 12.8 MS/s |
Power Requirements
| Parameter | Value |
|---|---|
| AC Input Voltage | 90 to 250 V AC |
| AC Input Frequency | 47 to 63 Hz |
| Power Consumption | 350 VA (maximum) |
Standards & Compliance
| Parameter | Value |
|---|---|
| Safety Standards | UL61010-1, CAN/CSA C22.2 No. 61010-1, EN61010-1 |
| Electromagnetic Compatibility (EMC) | EN61326-1, AS/NZS 2064 |
RF Input
| Parameter | Value |
|---|---|
| Preselector Range | 3.5 GHz to 8 GHz |
Preamplifier (Option 1A)
| Parameter | Value |
|---|---|
| Option 1A Frequency Range | 100 MHz to 3 GHz |
| Option 1A Gain | 20 dB (nominal) |
Real-Time Spectrum Analysis
| Parameter | Value |
|---|---|
| Minimum Event Duration for 100% POI (15 MHz Span) | 51.2 μs |
Inputs & Outputs
| Parameter | Value |
|---|---|
| Analog IF Output Frequency | 20 MHz (Option 03) |
| Analog IF Output Bandwidth | 20 MHz (-3 dB) (Option 03) |
| Digital IQ Output Data Format | LVDS (Option 05) |
Frequency Reference
| Parameter | Value |
|---|---|
| Reference Output Level | > 0 dBm |
| Reference Input Level Range | -10 dBm to +6 dBm |
Display & Audio
| Parameter | Value |
|---|---|
| Display Size | 8.4 in (213 mm) |
| Display Resolution | 640 × 480 pixels |
Interfaces
| Parameter | Value |
|---|---|
| GPIB Interface Standard | IEEE 488.2 |
| LAN Interface | 10/100 Base-T (RJ-45) |
| VGA Output Port | 15-pin D-sub |
Technology
Real-Time Spectrum Analysis
Applications
RF Signal Diagnostics, Digital Demodulation, Transient Capture, Vector Signal Analysis