The Tektronix FSL18 is a high-performance spectrum analyzer delivering RF signal characterization across 9 kHz to 18 GHz, with 20 GHz overrange capability. Built for R&D, field service, and production environments, it combines low noise performance with flexible measurement bandwidth and optional tracking generator functionality for scalar network analysis. The compact, lightweight design and user-friendly interface enable rapid signal assessment from broadband communications standards to pulsed signal detection.
Technical Specifications
Frequency & Measurement Bandwidth
• Frequency range: 9 kHz to 18 GHz (20 GHz overrange)
• Resolution bandwidths: 1 Hz to 10 MHz (20 MHz in zero span)
• Video bandwidths: 1 Hz to 10 MHz
• I/Q demodulation and signal analysis bandwidth: 28 MHz
Noise & Dynamic Range
• Displayed average noise level (DANL): typically –162 dBm at 1 GHz; <–140 dBm at 1 GHz (1 Hz RBW); <–130 dBm at 18 GHz (1 Hz RBW); <–152 dBm at 1 GHz with preamplifier
• Phase noise: typically –103 dBc (1 Hz) at 10 kHz offset; <–98 dBc/Hz at 10 kHz offset (500 MHz); <–115 dBc/Hz at 1 MHz offset (500 MHz)
• Third order intercept (TOI): typically +18 dBm (10 dBm typically 13 dBm)
• 1 dB compression point: +5 dBm
Measurement Accuracy
• Level measurement uncertainty: <0.5 dB (f < 3 GHz); <0.8 dB (f < 6 GHz); <1.2 dB (f < 18 GHz)
• RF attenuation: 5 dB steps
– Key Features
• Optional tracking generator extends functionality to 18 GHz for scalar network analysis
• Pulsed signal detection and time-domain pulse width measurement
• Low weight (<8 kg) and compact form factor for field portability
• Plug-and-play option upgrades without enclosure opening
• GPIB and LAN connectivity for remote control and data transfer
– Typical Applications
• Microwave frequency range analysis and characterization
• Broadband signal spectral and modulation parameter measurement (WLAN, WiMAX)
• Pulsed signal detection and timing analysis
• Portable scalar network analysis with optional tracking generator
– Compatibility & Integration
• Power supply: 12 V to 28 V DC (optional B30 DC supply)
• Optional B5 interface module enables video output, IF output, noise source control, AUX port, and R&S NRP power sensor compatibility
• USB ports support keyboard, mouse, USB storage, and power sensors
• R&S NRP power sensor compatibility via dedicated connector (B5 option)
