The Agilent/Keysight 141T is a modular spectrum analyzer mainframe with interchangeable RF and IF plug-in sections, supporting signal analysis from 20 Hz to 40 GHz. It functions as a display and control center for 8550-series and 8552-series plug-ins, or as an oscilloscope when paired with 1400-series modules. The instrument features a post-accelerator storage tube with P31 phosphor and an 8 × 10 division parallax-free internal graticule (7.1 cm × 8.9 cm).
Technical Specifications
Display & Storage:
• Post-accelerator storage CRT with P31 phosphor
• 8 × 10 graticule, 7.1 cm × 8.9 cm, parallax-free
• Natural persistence: 0.1 second
• Variable persistence: 1 minute at normal writing rate; 0.2 second to 15 seconds at maximum writing rate
• Trace storage at reduced intensity: >2 hours
• Trace storage at normal intensity: up to 1 minute
• Erase time: approximately 350 milliseconds
Frequency & Scanning:
• System range: 20 Hz to 40 GHz (plug-in dependent)
• Calibrated scan width: 20 Hz/div to 200 kHz/div
• Scan time: 16 internal rates from 0.1 ms/div to 10 sec/div (1, 2, 5 sequence)
• Scan modes: Internal (Auto, Line, External, Video), Single, External, Manual
• Scan trigger: Auto, Line, External (>2 volt sync), Video (RF envelope sync)
• Center frequency accuracy (8552B example): ±500 Hz (0–30 kHz range); ±3 kHz (0–300 kHz range)
• RF markers: 20 kHz spacing, ±0.01% accuracy
Input Characteristics:
• Impedance: 50 Ω nominal
• Reflection coefficient: 60 seconds)
• Long-duration trace retention for narrow-bandwidth analysis without amplitude calibration drift
• Switchable operational modes: spectrum analyzer, oscilloscope, or fixed-tuned receiver
• Flexible plug-in architecture accommodates multiple tuning sections
• Manual scan capability with compatible IF sections
– Typical Applications
• Broadband RF spectrum analysis across ultralow to millimeter-wave frequencies
• Time-domain signal observation via oscilloscope mode
• Fixed-frequency receiver operation with time-domain amplitude monitoring
• Narrow-bandwidth signal characterization requiring extended persistence display
– Compatibility & Integration
Accepts 8550-series RF tuning sections (20 Hz to 40 GHz), 8552-series IF sections, and 1400-series oscilloscope plug-ins. Specific frequency coverage determined by installed tuning module (examples: 8556A: 20 Hz–300 kHz; 8553B: 1 kHz–110 MHz; 8554B: 100 kHz–1250 MHz; 8555A: 10 MHz–40 GHz).
